10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

ý	Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
for the fiscal year ended December 31, 2018
o	Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the transition period from                        to

Commission File Number: 1-13703

SIX FLAGS ENTERTAINMENT CORPORATION

(Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation or organization)	13-3995059 (I.R.S. Employer Identification No.)
924 Avenue J East Grand Prairie, Texas (Address of principal executive offices)	75050 (Zip Code)

Registrant's telephone number, including area code: (972) 595-5000

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Stock, par value $0.025 per share	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act of 1993. Yes ý    No o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934. Yes o    No ý

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ý    No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of the registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ý

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or emerging growth company. See definition of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ý Accelerated filer o Non-accelerated filer o Smaller reporting  company o Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes o    No ý

On the last business day of the registrant's most recently completed second fiscal quarter, the aggregate market value of the common stock of the registrant held by non-affiliates was approximately $5,573.7 million based on the closing price $70.05 of the common stock on The New York Stock Exchange on such date. Shares of common stock beneficially held by each executive officer and director have been excluded from this computation because these persons may be deemed to be affiliates. This determination of affiliate status is not necessarily a conclusive determination for any other purposes.

On February 14, 2019, there were 84,074,573 shares of common stock, par value $0.025, of the registrant issued and outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the information required in Part III by Items 10, 11, 12, 13 and 14 are incorporated by reference to the registrant's proxy statement for the 2019 annual meeting of stockholders, which will be filed by the registrant within 120 days after the close of its 2018 fiscal year.

TABLE OF CONTENTS

		Page No.
	Part I
Item 1	Business	1
Item 1A	Risk Factors	11
Item 1B	Unresolved Staff Comments	21
Item 2	Properties	21
Item 3	Legal Proceedings	21
Item 4	Mine Safety Disclosures	22
	Part II
Item 5	Market for the Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	22
Item 6	Selected Financial Data	25
Item 7	Management's Discussion and Analysis of Financial Condition and Results of Operations	28
Item 7A	Quantitative and Qualitative Disclosures about Market Risk	41
Item 8	Financial Statements and Supplementary Data	42
Item 9	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	82
Item 9A	Controls and Procedures	82
Item 9B	Other Information	83
	Part III
Item 10	Directors, Executive Officers and Corporate Governance	83
Item 11	Executive Compensation	83
Item 12	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	83
Item 13	Certain Relationships and Related Transactions and Director Independence	85
Item 14	Principal Accounting Fees and Services	85
	Part IV
Item 15	Exhibits and Financial Statement Schedules	86
	Signatures	92

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K (the "Annual Report") and the documents incorporated herein by reference contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements include all statements that are not historical facts and can be identified by words such as "anticipates," "intends," "plans," "seeks," "believes," "estimates," "expects," "may," "should," "could" and variations of such words or similar expressions. Forward-looking statements are based on our current beliefs, expectations and assumptions regarding our business, the economy and other future conditions. Because forward-looking statements relate to the future, they are, by their nature, subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. Our actual results may differ materially from those contemplated by the forward-looking statements. Therefore, we caution you that you should not rely on any of these forward-looking statements as statements of historical fact or as guarantees or assurances of future performance. These statements may involve risks and uncertainties that could cause actual results to differ materially from those described in such statements. These risks and uncertainties include, but are not limited to, statements we make regarding: (i) the adequacy of cash flows from operations, available cash and available amounts under our credit facilities to meet our future liquidity needs, (ii) our ability to roll out our capital enhancements and planned initiatives in a timely and cost effective manner, (iii) our ability to improve operating results by implementing strategic cost reductions and organizational and personnel changes without adversely affecting our business, (iv) our dividend policy and ability to pay dividends on our common stock, (v) the effect of and cost and timing of compliance with newly enacted laws, regulations and accounting policies, and (vi) our operations and results of operations. Additional important factors that could cause actual results to differ materially from those in the forward-looking statements include regional, national or global political, economic, business, competitive, market and regulatory conditions and include, but are not limited to, the following:

• factors impacting attendance, such as local conditions, natural disasters, contagious diseases, events, disturbances and terrorist activities;

• recall of food, toys and other retail products sold at our parks;

• accidents occurring at our parks or other parks in the industry and adverse publicity concerning our parks or other parks in the industry;

• inability to achieve desired improvements and our aspirational financial performance goals;

• adverse weather conditions such as excess heat or cold, rain and storms;

• general financial and credit market conditions;

• economic conditions (including customer spending patterns);

• changes in public and consumer tastes;

• construction delays in capital improvements or ride downtime;

• competition with other theme parks and waterparks and entertainment alternatives;

• dependence on a seasonal workforce;

• unionization activities and labor disputes;

• laws and regulations affecting labor and employee benefit costs, including increases in state and federally mandated minimum wages, and healthcare reform;

• pending, threatened or future legal proceedings and the significant expenses associated with litigation;

• cybersecurity risks; and

• other factors described in "Item 1A. Risk Factors" included elsewhere in this Annual Report.

A more complete discussion of these factors and other risks applicable to our business is contained in "Part I, Item 1A. Risk Factors" included elsewhere in this Annual Report. All forward-looking statements in this report, or that are made on our behalf by our directors, officers or employees related to the information contained herein, apply only as of the date of this report or as of the date they were made. While we believe that the expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectations will be realized and actual results could vary materially. Factors or events that could cause our actual results to differ may emerge from time to time, and it is not possible for us to predict all of them. We undertake no obligation, except as required by applicable law, to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise.

*        *        *        *        *

As used in this Annual Report, unless the context requires otherwise, the terms "we," "our," "Six Flags," "the Company" and "SFEC" refer collectively to Six Flags Entertainment Corporation and its consolidated subsidiaries, and "Holdings" refers only to Six Flags Entertainment Corporation, without regard to its consolidated subsidiaries.

Looney Tunes characters, names and all related indicia are trademarks of Warner Bros., a division of Time Warner Entertainment Company, L.P. Batman, Superman and Wonder Woman and all related characters, names and indicia are copyrights and trademarks of DC Comics. Six Flags and all related indicia are registered trademarks of Six Flags Theme Parks Inc.

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PART I

ITEM 1. BUSINESS

Introduction

We are the largest regional theme park operator in the world and the largest operator of waterparks in North America based on the number of parks we operate. Of our 25 regional theme parks and waterparks, 22 are located in the United States, two are located in Mexico and one is located in Montreal, Canada. Our U.S. parks serve each of the top 10 designated market areas, as determined by a survey of television households within designated market areas published by A.C. Nielsen Media Research in September 2018. Our diversified portfolio of North American parks serves an aggregate population of approximately 130 million people and 230 million people within a radius of 50 miles and 100 miles, respectively, with some of the highest per capita gross domestic product in the U.S.

Our parks occupy approximately 5,900 acres of land, and we own approximately 800 acres of other potentially developable land. Our parks are located in geographically diverse markets across North America. Our parks generally offer a broad selection of state-of-the-art and traditional thrill rides, water attractions, themed areas, concerts and shows, restaurants, game venues and retail outlets, and thereby provide a complete family-oriented entertainment experience. In the aggregate, during 2018, our parks offered approximately 920 rides, including over 150 roller coasters, making us the leading provider of "thrill rides" in the industry.

In 1998, we acquired the former Six Flags Entertainment Corporation ("Former SFEC", a corporation that has been merged out of existence and that had always been a separate corporation from Holdings), which had operated regional theme parks and waterparks under the Six Flags name for nearly forty years and established an internationally recognized brand name. We own the "Six Flags" brand name in the U.S. and foreign countries throughout the world. To capitalize on this name recognition, 21 of our parks are branded as "Six Flags" or "Hurricane Harbor" parks and, in 2014, we also began the development, with third-party partners, of Six Flags-branded parks outside of North America.

We hold exclusive long-term licenses for theme park usage of certain Warner Bros. and DC Comics characters throughout the U.S. (except the Las Vegas metropolitan area), Canada, Mexico and other countries. These characters include Bugs Bunny, Daffy Duck, Tweety Bird, Yosemite Sam, Batman, Superman, The Joker, Wonder Woman, Aquaman, and others. We use these characters to market our parks and to provide an enhanced family entertainment experience. Our licenses include the right to sell merchandise featuring the characters at the parks, and to use the characters in our advertising, as walk-around characters and in theming for rides, attractions and retail outlets. We believe using these characters promotes increased attendance, supports higher ticket prices, increases lengths-of-stay and enhances in-park sales.

We believe our parks benefit from limited direct theme park competition. A limited supply of real estate appropriate for theme park development, substantial initial capital investment requirements, long development lead-time, and zoning restrictions provide each of our parks with a significant degree of protection from competitive new theme park openings. Based on our knowledge of the development of our own and other regional theme parks, we estimate it would cost $500 million to $700 million and would take a minimum of four years to construct a new regional theme park comparable to one of our major Six Flags-branded theme parks.

Description of Parks and Segment Information

Our parks provide similar products and services through a similar process to the same class of customer through a consistent method. We also believe our parks share common economic characteristics. Based on these factors, we have only one reportable segment—theme parks. The following chart summarizes key business and geographical information about our parks.

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Name of Park and Location	Description	Designated Market Area and Rank*	Population Within Radius from Park Location	External Park Competition / Location / Approximate Distance
Frontier City Oklahoma City, OK White Water Bay Oklahoma City, OK	113 acres— theme park 24 acres— waterpark	Oklahoma City (45)	1.6 million—50 miles 2.9 million—100 miles	Andy Alligator's Water Park / Norman, OK / 20 miles
La Ronde Montreal, Canada	146 acres—theme park	N/A	4.7 million—50 miles 6.1 million—100 miles	Quebec City Water Park / Quebec City, Quebec, Canada / 130 miles Canada's Wonderland / Vaughan, Ontario, Canada / 370 miles
Six Flags America Largo, MD	515 acres—combination theme park and waterpark and approximately 300 acres of potentially developable land	Washington, D.C. (6) Baltimore (26)	8.4 million—50 miles 14.1 million—100 miles	Kings Dominion / Doswell, VA (near Richmond) / 120 miles Hershey Park / Hershey, PA / 130 miles Busch Gardens / Williamsburg, VA / 180 miles
Six Flags Darien Lake Darien, NY	982 acres— combination theme park and waterpark, hotel and campground	Buffalo (52)	2.6 million—50 miles 10.9 million—100 miles	Marineland / Niagara Falls, Ontario, Canada / 50 miles Fantasy Island / Grand Island, NY / 40 miles
Six Flags Discovery Kingdom Vallejo, CA Six Flags Hurricane Harbor Concord Concord, CA	159 acres— separately gated theme park with marine and land animal exhibits, and waterpark on 135 acres and 24 acres, respectively	San Francisco / Oakland (8) Sacramento (20)	6.5 million—50 miles 12.2 million—100 miles	Aquarium of the Bay at Pier 39 / San Francisco, CA / 30 miles Academy of Science Center / San Francisco, CA / 30 miles California Great America / Santa Clara, CA / 60 miles Gilroy Gardens / Gilroy, CA / 100 miles Outer Bay at Monterey Bay Aquarium / Monterey, CA / 130 miles
Six Flags Fiesta Texas San Antonio, TX	220 acres—combination theme park and waterpark	Houston (7) San Antonio (31) Austin (40)	2.6 million—50 miles 4.8 million—100 miles	Sea World of Texas / San Antonio, TX / 20 miles Schlitterbahn / New Braunfels, TX / 30 miles
Six Flags Great Adventure & Safari / Six Flags Hurricane Harbor Jackson, NJ	2,200 acres—separately gated theme park/safari and waterpark and approximately 456 acres of potentially developable land	New York City (1) Philadelphia (4)	13.8 million—50 miles 29.7 million—100 miles	Hershey Park / Hershey, PA / 150 miles Dorney Park / Allentown, PA / 80 miles Morey's Piers Wildwood / Wildwood, NJ / 100 miles Coney Island / Brooklyn, NY / 80 miles
Six Flags Great America Gurnee, IL	304 acres—combination theme park and waterpark and approximately 30 acres of potentially developable land	Chicago (3) Milwaukee (36)	8.8 million—50 miles 13.9 million—100 miles	Kings Island / Cincinnati, OH / 350 miles Cedar Point / Sandusky, OH / 340 miles Several waterparks / Wisconsin Dells Area / 170 miles
Six Flags Hurricane Harbor Oaxtepec, Mexico	67 acres—waterpark	N/A	21.4 million—50 miles 30.7 million—100 miles	El Rollo / Tlaquiltenango, Mexico / 20 miles Parque Acuatico Ojo de Agua / Temixco, Mexico / 20 miles Ixtapan Aquatic Park / Ixtapan de la Sal, Mexico / 50 miles
Six Flags Hurricane Harbor Phoenix Glendale, AZ	33 acres—waterpark	Phoenix (12)	4.4 million—50 miles 4.8 million—100 miles	Big Surf / Tempe, AZ / 30 miles Golfland Sunsplash / Mesa, AZ / 40 miles Castles & Coasters / Phoenix, AZ / 10 miles

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Name of Park and Location	Description	Designated Market Area and Rank*	Population Within Radius from Park Location	External Park Competition / Location / Approximate Distance
Six Flags Hurricane Harbor Splashtown Spring, TX	46 acres—waterpark	Houston (7)	6.6 million—50 miles 8.0 million—100 miles	Big Rivers Waterpark / New Caney, TX / 20 miles Typhoon Texas Water Park / Katy, TX / 40 miles Schlitterbahn Galveston / Galveston, TX / 70 miles
Six Flags Magic Mountain / Six Flags Hurricane Harbor Valencia, CA	262 acres—separately gated theme park and waterpark on 250 acres and 12 acres, respectively	Los Angeles (2)	10.5 million—50 miles 19.0 million—100 miles	Disneyland Resort / Anaheim, CA / 60 miles Universal Studios Hollywood / Universal City, CA / 20 miles Knott's Berry Farm / Soak City USA Buena Park, CA / 50 miles Sea World of California / San Diego, CA / 150 miles Legoland / Carlsbad, CA / 130 miles Raging Waters / San Dimas, CA / 50 miles
Six Flags Mexico Mexico City, Mexico	110 acres—theme park	N/A	24.5 million—50 miles 33.0 million—100 miles	Mexico City Zoo / Mexico City, Mexico / 10 miles La Feria / Mexico City, Mexico / 10 miles
Six Flags New England Agawam, MA	262 acres—combination theme park and waterpark	Boston (9) Hartford / New Haven (33) Providence (53) Springfield (108)	3.4 million—50 miles 16.6 million—100 miles	Lake Compounce / Bristol, CT / 50 miles Canobie Lake Park / Salem, NH / 140 miles
Six Flags Over Georgia Austell, GA Six Flags White Water Atlanta Marietta, GA	352 acres—separately gated theme park and waterpark on 283 acres and waterpark on 69 acres, respectively	Atlanta (10)	5.8 million—50 miles 9.0 million—100 miles	Georgia Aquarium / Atlanta, GA / 20 miles Carowinds / Charlotte, NC / 250 miles Alabama Splash Adventures / Birmingham, AL / 160 miles Dollywood and Splash Country / Pigeon Forge, TN / 200 miles Wild Adventures / Valdosta, GA / 240 miles
Six Flags Over Texas / Six Flags Hurricane Harbor Arlington, TX	264 acres—separately gated theme park and waterpark on 217 and 47 acres, respectively	Dallas/Fort Worth (5)	7.1 million—50 miles 8.4 million—100 miles	Sea World of Texas / San Antonio, TX / 280 miles NRH2O Water Park / North Richland Hills, TX / 10 miles Epic Waters / Grand Prairie, TX / 5 miles Hawaiian Falls Water parks / Multiple Locations / 15 - 35 miles
Six Flags St. Louis Eureka, MO	320 acres—combination theme park and waterpark and approximately 17 acres of potentially developable land	St. Louis (21)	2.8 million—50 miles 4.0 million—100 miles	Worlds of Fun / Kansas City, MO / 250 miles Silver Dollar City / Branson, MO / 250 miles Holiday World / Santa Claus, IN / 150 miles
The Great Escape and Hurricane Harbor / Six Flags Great Escape Lodge & Indoor Waterpark Queensbury, NY	345 acres—combination theme park and waterpark, plus 200 room hotel and 38,000 square foot indoor waterpark	Albany (60)	1.1 million—50 miles 3.1 million—100 miles	Huck Finn's Playland / Albany, New York / 60 miles Several hotels/indoor waterparks / Poconos and New England Areas / 200 miles

________________________________________

* Based on a September 22, 2018 survey of television households within designated market areas published by A.C. Nielsen Media Research.

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Partnership Park Arrangements

In connection with our 1998 acquisition of Former SFEC, we guaranteed certain obligations relating to Six Flags Over Texas ("SFOT") and Six Flags Over Georgia, including Six Flags White Water Atlanta ("SFOG", and together with SFOT, the "Partnership Parks"). These obligations continue until 2027, in the case of SFOG, and 2028, in the case of SFOT. Such obligations include (i) minimum annual distributions (including rent) of approximately $72.5 million in 2019 (subject to cost of living adjustments in subsequent years) to the limited partners in the Partnerships Parks (based on our ownership of units as of December 31, 2018, our share of the distribution will be approximately $31.7 million) and (ii) minimum capital expenditures at each park during rolling five-year periods based generally on 6% of Partnership Park revenues. Cash flow from operations at the Partnership Parks is used to satisfy these requirements before any funds are required from us. We also guaranteed the obligation of our subsidiaries to annually purchase all outstanding limited partnership units to the extent tendered by the unit holders (the "Partnership Park Put").

After payment of the minimum distribution, we are entitled to a management fee equal to 3% of prior year gross revenues and, thereafter, any additional cash will be distributed first to management fee in arrears, then repayment of any interest and principal on intercompany loans, with any additional cash being distributed 95% to us, in the case of SFOG, and 92.5% to us, in the case of SFOT.

The agreed price for units tendered in the Partnership Park Put is based on a valuation of each of the respective Partnership Parks (the "Specified Price") that is the greater of (i) a valuation for each of the respective Partnership Parks derived by multiplying such park's weighted average four year EBITDA (as defined in the agreements that govern the partnerships) by a specified multiple (8.0 in the case of SFOG and 8.5 in the case of SFOT) and (ii) a valuation derived from the highest prices previously paid for the units of the Partnership Parks by certain entities.  Pursuant to the valuation methodologies described in the preceding sentence, the Specified Price for the Partnership Parks, if determined as of December 31, 2018, is $408.3 million in the case of SFOG and $520.5 million in the case of SFOT. As of December 31, 2018, we owned approximately 31.0% and 53.2% of the Georgia limited partner interests and Texas limited partner interests, respectively. The remaining redeemable units of approximately 69.0% and 46.8% of the Georgia limited partner and Texas limited partner, respectively, represent a current redemption value for the limited partnership units of approximately $525.3 million.

Pursuant to the 2018 annual offer, we did not purchase any units from the Georgia partnership and we purchased 0.1750 units from the Texas partnership for approximately $0.4 million in May 2018. The $350 million accordion feature on the Amended and Restated Term Loan B under the Amended and Restated Credit Facility (as defined in "Management's Discussion and Analysis of Financial Condition and Results of Operations - Liquidity and Capital Resources" in Item 7 of this Annual Report) is available for borrowing for future "put" obligations if necessary.

In connection with our acquisition of the Former SFEC, we entered into the Subordinated Indemnity Agreement with certain of the Company's entities, Time Warner and an affiliate of Time Warner, pursuant to which, among other things, we transferred to Time Warner (which has guaranteed all of our obligations under the Partnership Park arrangements) record title to the corporations which own the entities that have purchased and will purchase limited partnership units of the Partnership Parks, we received an assignment from Time Warner of all cash flow received on such limited partnership units, and we otherwise control such entities. In addition, we issued preferred stock of the managing partner of the partnerships to Time Warner. In the event of a default by us under the Subordinated Indemnity Agreement or of our obligations to our partners in the Partnership Parks, these arrangements would permit Time Warner to take full control of both the entities that own limited partnership units and the managing partner. If we satisfy all such obligations, Time Warner is required to transfer to us the entire equity interests of these entities.

We incurred $21.2 million of capital expenditures at these parks during the 2018 season and intend to incur approximately $17 million of capital expenditures at these parks for the 2019 season, an amount in excess of the minimum required expenditure. Cash flows from operations at the Partnership Parks will be used to satisfy the annual distribution and capital expenditure requirements before any funds are required from us. The two partnerships generated approximately $77.6 million of cash in 2018 from operating activities after deduction of capital expenditures and excluding the impact of short-term intercompany advances from or payments to Holdings, as the case may be. As of December 31, 2018 and 2017, we had total loans receivable outstanding of $239.3 million from the partnerships that own the Partnership Parks. The proceeds from these loans were primarily used to fund the acquisition of Six Flags White Water Atlanta and to make capital improvements and distributions to the limited partners in prior years.

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Marketing and Promotion

We attract visitors through multi-media marketing and promotional programs for each of our parks. The programs are designed to attract guests and enhance the Six Flags brand name and are tailored to address the different characteristics of our various markets and to maximize the impact of specific park attractions and product introductions. All marketing and promotional programs are updated or completely changed each year to address new developments. These initiatives are supervised by our Senior Vice President, Marketing and Sales, with the assistance of our senior management and advertising and promotion agencies.

We also develop alliance, sponsorship and co-marketing relationships with well-known national, regional and local consumer goods companies and retailers to supplement our advertising efforts and to provide attendance incentives in the form of discounts. We also arrange for popular local radio and television programs to be filmed or broadcast live from our parks.

During 2013, we launched a monthly membership program. During 2018, we enhanced the membership program by offering four premium priced tiers with enhanced benefits and launched a membership loyalty program, which entitles certain members to earn points that may be redeemed for park-related rewards. Membership and season pass sales establish an attendance base in advance of the season, reducing exposure to inclement weather and providing other benefits. In general, a season pass holder or member contributes higher aggregate revenue and profitability to the Company over the course of a year compared to a single day ticket guest because a season pass holder or member pays a higher ticket price and contributes to in-park guest spending over multiple visits. Additionally, guests enrolled in our membership program and season pass holders often bring paying guests and generate "word-of-mouth" advertising for the parks. Season pass and membership attendance constituted approximately 63% in both 2018 and 2017 and 60% in 2016 of the total attendance at our parks.

At times we offer discounts on season passes, multi-visit tickets, tickets for specific dates and tickets to affiliated groups such as businesses, schools and religious, fraternal and similar organizations.

We also implement promotional programs as a means of targeting specific market segments and locations not generally reached through group or retail sales efforts. The promotional programs utilize coupons, sweepstakes, reward incentives and rebates to attract additional visitors. These programs are implemented through online promotions, direct mail, telemarketing, direct-response media, sponsorship marketing and targeted multi-media programs. The special promotional offers are usually available for a limited time and offer a reduced admission price or provide some additional incentive to purchase a ticket.

Licenses

We have the exclusive right on a long-term basis to theme park usage of the Warner Bros. and DC Comics animated characters throughout the U.S. (except for the Las Vegas metropolitan area), Canada, Mexico and certain other countries. In particular, our license agreements entitle us to use, subject to customary approval rights of Warner Bros. and, in limited circumstances, approval rights of certain third parties, all animated, cartoon and comic book characters that Warner Bros. and DC Comics have the right to license, including Batman, The Joker, Superman, Wonder Woman, Aquaman, Bugs Bunny, Daffy Duck, Tweety Bird and Yosemite Sam. They also include the right to sell merchandise using the characters. In addition to annual license fees, we are required to pay a royalty fee on any merchandise manufactured by or for us and sold that use the licensed characters. Warner Bros. has the right to terminate the license agreements under certain circumstances, including if any persons involved in the movie or television industries obtain control of us or, in the case of Warner Bros., upon a default under the Subordinated Indemnity Agreement.

Park Operations

We currently operate in geographically diverse markets in North America. The parks are generally managed by a park president who reports to a senior vice president of the Company. The park presidents are responsible for all operations and management of the individual parks. Local advertising, ticket sales, community relations and hiring and training of personnel are the responsibility of individual park management in coordination with corporate support teams.

Each park president directs a full-time, on-site management team. Each management team includes senior personnel responsible for operations and maintenance; in-park food, beverage, merchandising and games; marketing and promotion; sponsorships; human resources and finance. Finance directors at our parks report to a corporate senior vice president of the Company, and, with their support staff, provide financial services to their respective parks and park management teams. Park management compensation structures are designed to provide financial incentives for individual park managers to execute our strategy and to maximize revenue and free cash flow.

Our parks are generally open daily from Memorial Day through Labor Day. In addition, most of our parks are open weekends prior to and following their daily seasons, often in conjunction with themed events such as Fright Fest^® and Holiday in the Park^®. Due to their location, certain parks have longer operating seasons. Typically, the parks charge a basic daily admission price that allows unlimited use of all rides and attractions, although in certain cases special rides and attractions

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require the payment of an additional fee. Our Six Flags Magic Mountain park operates 365 days a year and our parks in Mexico operate weekends year-round outside of their traditional operating season. Beginning in January 2019, our Six Flags Fiesta Texas park will operate weekends year-round outside of its traditional operating season.

See Note 15 to the consolidated financial statements included elsewhere in this Annual Report for information concerning revenues and long-lived assets by domestic and international categories.

Capital Improvements and Other Initiatives

We regularly make capital investments, primarily for new rides and attractions in our parks, which total approximately 9% of revenues annually. We purchase both new and used rides and attractions. On occasion we also relocate rides among parks to provide fresh attractions. We believe the selective introduction of new rides and attractions, including family entertainment attractions, is an important factor in promoting each of the parks to draw higher attendance and encourage longer visits, which can lead to higher in-park sales.

During 2018, we (i) added the world’s first single rail coaster at Six Flags Fiesta Texas (San Antonio, TX); (ii) added the world’s tallest pendulum ride at Six Flags Magic Mountain (Valencia, CA); (iii) added a first-of-its-kind in North America, triple box spinning ride at Six Flags Great Adventure (Jackson, NJ) and Six Flags Over Texas (Arlington, TX); (iv) debuted Twisted Cyclone, a hybrid roller coaster at Six Flags Over Georgia (Austell, GA); (v) added a 70 miles-per-hour pendulum ride at Six Flags New England (Agawam, MA); (vi) added a 4D Free Fly Coaster at Six Flags Mexico (Mexico City); (vii) debuted an adventure river at Six Flags America (Largo, MD); (viii) added the world’s first-of-its-kind inverted coaster at Six Flags Discovery Kingdom (Vallejo, CA); (ix) added the world’s largest loop coaster at Six Flags Great America (Gurnee, IL); (x) added a hybrid, zero-gravity slide complex at Six Flags St. Louis (Eureka, MO); (xi) added a classic spinning attraction at The Great Escape and Splashwater Kingdom (Queensbury, NY); (xii) added a new family thrill ride at La Ronde (Montreal, Canada); (xiii) debuted a new family interactive water play attraction at Six Flags Hurricane Harbor Concord (Concord, CA); and (xiv) introduced five new domestic parks, Frontier City and Whitewater Bay (Oklahoma City, OK), Wet 'n' Wild Splashtown (Houston, TX), Wet 'n' Phoenix (Phoenix, AZ), and Darien Lake (Buffalo, NY).

Planned initiatives for 2019 include (i) the world's first racing launch coaster at Six Flags Magic Mountain (Valencia, CA); (ii) one of the world's largest pendulum rides at Six Flags Great Adventure (Jackson, NJ); (iii) the fastest accelerating launch coaster in North America at Six Flags Great America (Gurnee, IL); (iv) a 4D Free Fly Coaster at Six Flags Discovery Kingdom (Vallejo, CA); (v) the world's largest spinning pendulum ride at Six Flags Fiesta Texas (San Antonio, TX); (vi) a new family area with six brand new attractions at Six Flags Mexico (Mexico City, Mexico) and a new racing slide at Six Flags Hurricane Harbor Oaxtepec (Oaxtepec, Mexico); (vii) the world's largest loop coaster at Six Flags Over Texas (Arlington, Texas); (viii) a new dark ride attraction at Six Flags New England (Agawam, MA); (ix) a new kids area at Frontier City (Oklahoma City, OK); (x) the tallest swinging pendulum ride in the Southeast at Six Flags Over Georgia (Austell, GA); (xi) a loop coaster at La Ronde (Montreal, Canada); (xii) a new whirling wheel attraction at Six Flags St. Louis (Eureka, MO); (xiii) two new family attractions and rebranding the waterpark to Hurricane Harbor at The Great Escape (Queensbury, NY); (xiv) new trains and theming for the Firebird coaster at Six Flags America (Largo, MD); (xv) a swing ride at Six Flags Darien Lake, the tallest thrill ride in New York, (Buffalo, NY); (xvi) a new six story wave wall slide at Hurricane Harbor Splashtown (Houston, TX); (xvii) rebranding Wet 'n' Wild Phoenix, Wet 'n' Wild Splashtown, and Darien Lake to Six Flags Hurricane Harbor Phoenix, Six Flags Hurricane Harbor Splashtown, and Six Flags Darien Lake, respectively; and (xviii) introducing our twenty-sixth park with the acquisition of Magic Waters Waterpark (Rockport, IL).

In addition to new rides and attractions, we make other capital improvements. We generally make capital investments in the food, retail, games and other in-park areas to increase per capita guest spending. We also make annual enhancements in the theming and landscaping of our parks in order to provide a more complete family-oriented entertainment experience. Each year, we invest in our information technology infrastructure, which helps enhance our operational efficiencies. Maintenance capital expenditures are planned on an annual basis with most expenditures made during the off-season. Repairs and maintenance costs for materials and services associated with maintaining assets, such as painting and inspecting existing rides, are expensed as incurred and are not included in capital expenditures.

Also during 2019, we plan to continue (i) our targeted marketing strategies to attract guests, including focusing on our breadth of product and value offerings; (ii) improving and expanding upon our branded product offerings and guest-focused initiatives to continue driving guest spending growth, including membership and new loyalty reward programs and the all season dining pass program, which enables season pass holders and members to eat meals and snacks any day they visit the park for one upfront payment; and (iii) growing sponsorship and international revenue opportunities.

International Agreements

We have signed agreements to assist third parties in the development and management of Six Flags-branded parks outside of North America. As compensation for exclusivity, brand licensing rights, and design, development and management services,

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we receive fees during the design and development period as well as ongoing remuneration after the parks open to the public. The agreements do not require us to make any capital investments in the parks. We currently have agreements to develop Six Flags-branded parks in China, Saudi Arabia, and Dubai.

The development of a Six Flags-branded theme park in Dubai is currently on hold. Although our partner is current on all of its financial obligations to us, and while we intend to continue to work with them on a path forward, there can be no assurances as to the outcome of this project. In addition, in the fourth quarter of 2018, some of the China parks' opening schedules were delayed due to recent macroeconomic events and their impact on our partner.

Maintenance and Inspection

Rides are inspected at various levels and frequencies in accordance with manufacturer specifications. Our rides are inspected daily during the operating season by our maintenance personnel. These inspections include safety checks, as well as regular maintenance, and are made through both visual inspection and test operations of the rides. Our senior management and the individual park personnel evaluate the risk aspects of each park's operations. Potential risks to employees and staff as well as to the public are evaluated. In addition, contingency response plans for potential emergency situations have been developed for each facility. During the off-season, maintenance personnel examine the rides and repair, refurbish and rebuild them when necessary. This process includes x-raying and magnafluxing (a further examination for minute cracks and defects) steel portions of certain rides at high-stress points. A large portion of our full-time workforce devotes substantially all of its time to maintaining the parks and our rides and attractions. We use a computerized maintenance-management system across all of our domestic parks to assist us in executing our maintenance programs.

In addition to the performance of our internal maintenance and inspection procedures, third-party consultants are retained by us or our insurance carriers to perform an annual inspection of each park and all attractions. The results of these inspections are reported in written evaluation and inspection reports and include suggestions on various aspects of park operations. In certain states, state inspectors conduct additional annual ride inspections before the beginning of each season. Other portions of each park are subject to inspections by local fire marshals and health and building department officials. Furthermore, we use Ellis & Associates as water safety consultants at all of our waterparks to train lifeguards and audit safety procedures.

Insurance

We maintain insurance of the types and in amounts we believe are commercially reasonable and are available to businesses in our industry. We maintain multi-layered general liability policies that provide for excess liability coverage of up to $100.0 million per occurrence. For incidents arising on or after December 31, 2008, our self-insured retention is $2.0 million, followed by a $0.5 million deductible per occurrence applicable to all claims in the policy year for our domestic parks and our park in Canada and a nominal amount per occurrence for our parks in Mexico. Defense costs are in addition to these retentions. Our general liability policies cover the cost of punitive damages only in certain jurisdictions. Based upon reported claims and an estimate for incurred, but not reported claims, we accrue a liability for our self-insured retention contingencies. For workers' compensation claims arising after November 15, 2003, our deductible is $0.75 million. We also maintain fire and extended coverage, business interruption, terrorism and other forms of insurance typical to businesses in this industry. The all peril property coverage policies insure our real and personal properties (other than land) against physical damage resulting from a variety of hazards. Additionally, we maintain information security and privacy liability insurance in the amount of $10.0 million with a $0.25 million self-insured retention per event.

We generally renegotiate our insurance policies on an annual basis. The majority of our current insurance policies expire on December 31, 2019. We cannot predict the level of the premiums that we may be required to pay for subsequent insurance coverage, the level of any self-insurance retention applicable thereto, the level of aggregate coverage available or the availability of coverage for specific risks.

Competition

Our parks compete directly with other theme parks, water and amusement parks and indirectly with all other types of recreational facilities and forms of entertainment within their market areas, including movies, sporting events, home entertainment options, restaurants and vacation travel. Accordingly, our business is and will continue to be subject to factors affecting the recreation and leisure time industries generally, such as general economic conditions and changes in discretionary consumer spending habits. See "Item 1A. Risk Factors." Within each park's regional market area, the principal factors affecting direct theme park competition include location, price, the uniqueness and perceived safety and quality of the rides and attractions in a particular park, the atmosphere and cleanliness of a park and the quality of its food and entertainment.

Seasonality

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Our operations are highly seasonal, with approximately 75% of park attendance and revenues occurring in the second and third calendar quarters of each year, with the most significant period falling between Memorial Day and Labor Day.

Environmental and Other Regulations

Our operations are subject to federal, state and local environmental laws and regulations including laws and regulations governing water and sewer discharges, air emissions, soil and groundwater contamination, the maintenance of underground and aboveground storage tanks and the disposal of waste and hazardous materials. In addition, our operations are subject to other local, state and federal governmental regulations including, without limitation, labor, health, safety, zoning and land use and minimum wage regulations applicable to theme park and waterpark operations, and local and state regulations applicable to restaurant operations at each park. Finally, certain of our facilities are subject to laws and regulations relating to the care of animals. We believe that we are in substantial compliance with applicable environmental and other laws and regulations and, although no assurance can be given, we do not foresee the need for any significant expenditures in this area in the near future.

Portions of the undeveloped areas at certain of our parks are classified as wetlands. Accordingly, we may need to obtain governmental permits and other approvals prior to conducting development activities that affect these areas and future development may be prohibited in some or all of these areas. Additionally, the presence of wetlands in portions of our undeveloped land could adversely affect our ability to dispose of such land and/or the price we receive in any such disposition.

Philanthropy and Community Relations

We believe it is important to support the communities in which our parks are located. We partner with charitable organizations throughout North America whose mission aligns with our goal of bringing joy and thrills to families and children. Through our Read to Succeed program, we support academic achievement and seek to improve literacy by encouraging students to engage in recreational reading, and award free admission to eligible participants in the program. Most of our full-time employees spend at least an entire day each year volunteering on projects in their local communities to help others including distributing food to those in need, improving community centers and building or repairing homes. In addition, we sponsor toy drives, book drives, food drives and blood donation drives at our parks, and are committed to honoring the service of the U.S. military personnel and their families by offering complimentary and/or discounted admission to our parks. We also maintain a program in which we make a concerted effort to interview and hire U.S. military veterans. We also host special events to support various philanthropies whose mission focuses on improving health or supporting those affected by natural disasters.

Employees

As of December 31, 2018, we employed approximately 2,400 full-time employees, and over the course of the 2018 operating season we employed approximately 52,000 seasonal employees. In this regard, we compete with other local employers for qualified students and other candidates on a season-by-season basis. As part of the seasonal employment program, we employ a significant number of teenagers, which subjects us to child labor laws.

Approximately 17% of our full-time and approximately 11% of our seasonal employees are subject to labor agreements with local chapters of national unions. These labor agreements expire in December 2019 (Six Flags Over Georgia), January 2020 (Six Flags St. Louis), December 2020 (Six Flags Magic Mountain), January 2021 (Six Flags Over Texas), and December 2021 (Six Flags Great Adventure). The labor agreements for La Ronde expire in various years ranging from December 2019 through December 2022. We consider our employee relations to be good.

Executive Officers and Certain Significant Employees

The following table sets forth the name of the members of the Company's senior leadership team, the position held by such officer and the age of such officer as of the date of this report. The officers of the Company are generally elected each year at the organizational meeting of Holdings' Board of Directors, which follows the annual meeting of stockholders, and at other Board of Directors meetings, as appropriate.

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Name	Age	Title
James Reid-Anderson*	59	Chairman, President and Chief Executive Officer
Lance C. Balk*	61	Executive Vice President and General Counsel
Marshall Barber*	55	Executive Vice President and Chief Financial Officer
Kathy Aslin*	43	Senior Vice President, Human Resources
David Austin	57	Senior Vice President and Chief Information Officer
Taylor Brooks*	32	Vice President and Chief Accounting Officer
Tom Iven	60	Senior Vice President, U.S. Park Operations
David McKillips	47	Senior Vice President, International Park Operations
Brett Petit*	55	Senior Vice President, Marketing and Sales
Stephen R. Purtell	52	Senior Vice President, Investor Relations and Treasurer
Leonard A. Russ	45	Senior Vice President, Strategic Planning and Analysis
Bonnie Sherman Weber	54	Senior Vice President, In-Park Services

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* Executive Officers

James Reid-Anderson was named Chairman, President, and Chief Executive Officer of Six Flags in July 2017. From February 2016 to July 2017 he served as Executive Chairman of Six Flags and from August 2010 to February 2016, Mr. Reid-Anderson served as Chairman, President and Chief Executive Officer of Six Flags. Under his leadership Six Flags set a new strategic direction and achieved all-time high guest and employee satisfaction ratings, significant operational improvements and a ten-times return on investment for Six Flags' shareholders. Mr. Reid-Anderson had previously served as Chairman, President and Chief Executive Officer of Dade Behring Inc., a manufacturer and distributor of medical diagnostics equipment and supplies, where he drove a tenfold increase in Dade Behring's share price along with significant employee morale improvements and customer satisfaction increases, all achieving record levels. Mr. Reid-Anderson negotiated the sale of Dade Behring to Siemens in 2007 and subsequently assumed various roles including becoming a member of Siemens AG’s managing board and Chief Executive Officer of Siemens’ $20 billion Healthcare Sector. Earlier in his career Mr. Reid-Anderson held roles of increasing responsibility at PepsiCo, Diageo and Mobil, and as adviser to Apollo Management L.P., a private equity firm. Mr. Reid-Anderson is a fellow of the Association of Chartered Certified Accountants, U.K. and holds a Bachelor of Commerce degree from the Birmingham University, U.K.

Lance C. Balk was named General Counsel of Six Flags in September 2010. Mr. Balk previously served as Senior Vice President and General Counsel of Siemens Healthcare Diagnostics from November 2007 to January 2010. Prior to Dade Behring's acquisition by Siemens AG, he served in the same capacity at Dade Behring from May 2006 to November 2007. In these roles Mr. Balk was responsible for global legal matters. Before joining Dade Behring, Mr. Balk was a partner at the law firm Kirkland & Ellis LLP, where he co-founded the firm's New York corporate and securities practices. Mr. Balk holds a J.D. and an M.B.A. from the University of Chicago, and a B.A. degree in Philosophy from Northwestern University.

Marshall Barber was named Chief Financial Officer of Six Flags in February 2016 and is responsible for the finance and information technology functions at Six Flags. Mr. Barber previously served as Vice President of Business Planning for Six Flags from July 2006 to February 2016. He also held various other park-level and corporate-level financial positions since joining Six Flags in October 1996. Prior to joining Six Flags, Mr. Barber held financial positions at FoxMeyer Drug and G. D. Searle from 1994 to 1996 and with Electrocom Automation from 1989 to 1994. Mr. Barber holds a B.B.A. degree in Finance from the University of Texas at Arlington and an M.B.A. from Texas Christian University.

Kathy Aslin was named Senior Vice President, Human Resources of Six Flags in January 2017 and is responsible for developing and implementing strategies to support Six Flags' overall human resources vision including organizational design, leadership development, employee training and education, compensation and benefits, talent acquisition, and employee relations. Ms. Aslin began her career at Six Flags in 1998 as a seasonal summer intern and over the years held a number of management positions in Admissions, Guest Relations, Finance, In-Park Services, Corporate Marketing and Human Resources. Ms. Aslin holds a B.B.A degree from St. Gregory’s University and an M.B.A. from the University of Texas at Dallas.

David Austin was named Senior Vice President, Information Systems & Chief Information Officer for Six Flags in December 2017. Mr. Austin had previously served as Chief Technology Officer at Berkshire Hathaway Automotive from December 2014 to December 2017, where he had operational responsibility for all technology across 100 business units, technology development, and leadership of the IT team. Prior to that, from May 2007 to December 2014, he served as the Vice President of Information Technology at Larry H. Miller Group, a company with many businesses that included The Utah Jazz and associated arena businesses, large mega-plex cinemas, a 500-acre racetrack complex, and a large automotive business, where he led the IT team. Mr. Austin majored in Speech Communication at Fresno State University.

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Taylor Brooks was named the Vice President and Chief Accounting Officer of Six Flags effective June 2018. Mr. Brooks is responsible for overseeing the Company's accounting function. Mr. Brooks joined the Company in 2013 as the Financial Reporting Manager and in 2015 was named Director of Accounting and Assistant Controller. Prior to joining the Company, Mr. Brooks was the Financial Reporting and Technical Research Senior Accountant at DynCorp International, LLC, and prior to DynCorp he worked for Ernst & Young LLP. Mr. Brooks holds a Bachelor's degree and a Master's degree in Accounting from Abilene Christian University and is a Certified Public Accountant.

Tom Iven was named Senior Vice President, U.S. Park Operations of Six Flags in April 2014 and is responsible for the management of all of Six Flags' parks in the U.S. Mr. Iven began his career at Six Flags in 1976 as a seasonal employee and became a full-time employee in 1981. He held a number of management positions within several parks including Six Flags Magic Mountain and Six Flags Over Texas before being named General Manager of Six Flags St. Louis in 1998. In 2001, Mr. Iven was promoted to Executive Vice President, Western Region, comprised of 17 parks, a post he held until 2006 when he was named Senior Vice President. From 2010 until 2014, Mr. Iven was the Senior Vice President, Park Operations and was responsible for the management of Six Flags' parks in the Western region as well as the oversight of engineering, maintenance and operating efficiency programs for all Six Flags parks. Mr. Iven holds a B.S. degree from Missouri State University.

David McKillips was named Senior Vice President, International Park Operations for Six Flags in January 2018 and is responsible for the development and management of all properties outside of the United States. Additionally, he oversees the corporate design, engineering and maintenance functions for all parks. Mr. McKillips had previously served as Senior Vice President, In-Park Services from January 2016 to January 2018 and Senior Vice President, Corporate Alliances from September 2010 to January 2016. Mr. McKillips has over 20 years of experience in the entertainment and theme park industry, specializing in promotion, sponsorship and consumer product licensing sales. Prior to joining Six Flags, from November 1997 to April 2006, Mr. McKillips served as Vice President Advertising & Custom Publishing Sales for DC Comics, a division of Warner Bros. Entertainment and home to some of the world’s most iconic superheroes, including Superman, Batman and Wonder Woman. He started his career with Busch Entertainment, serving roles within the operations, entertainment, group sales and promotions departments at SeaWorld in Orlando, Florida and then at Sesame Place in Langhorne, Pennsylvania, as Manager of Promotions. Mr. McKillips holds a B.A. degree in Speech Communication from the University of Georgia.

Brett Petit was named Senior Vice President, Marketing and Sales of Six Flags in June 2010 and is responsible for all aspects of Six Flags' marketing strategy, advertising, promotions, group sales, online marketing, corporate sponsorships, media networks and licensed promotions. Over the course of his more than 30 years of experience in the theme and waterpark industry, Mr. Petit has managed marketing strategy for more than 65 different theme parks, waterparks and family entertainment centers across the country. Prior to joining Six Flags, Mr. Petit served from March 2007 to June 2010 as Senior Vice President of Marketing & Sales for Palace Entertainment, an operator of theme parks and attractions with 38 locations hosting 14 million visitors. Before that, he worked 12 years as Senior Vice President of Marketing for Paramount Parks with over 12 million visitors and spent 13 years with Busch Entertainment Theme Parks as Marketing Vice President and Director of Sales. Mr. Petit holds a B.A. degree in Marketing from University of South Florida.

Stephen R. Purtell was named Senior Vice President, Investor Relations and Treasurer of Six Flags in October 2016 and is responsible for investor relations and treasury. Mr. Purtell previously served as Vice President, Business Development and Treasurer for Six Flags from July 2012 to October 2016. Prior to joining Six Flags, Mr. Purtell served as VP, Sales Operations and Market Research for Siemens Healthcare Diagnostics after it acquired Dade Behring in 2007. Mr. Purtell joined Dade Behring in 2003 and held financial positions including Assistant Treasurer, VP Corporate Planning & Analysis, and Treasurer. Prior to joining Dade Behring, Mr. Purtell held financial and engineering positions at IMC Global and GATX Terminals Corporation, and was an officer in the U.S. Army. Mr. Purtell has a B.S. in Civil Engineering from the U.S. Military Academy at West Point, an M.B.A. from the Wharton School of the University of Pennsylvania, and is a Certified Public Accountant.

Leonard A. Russ was named Senior Vice President, Strategic Planning and Analysis of Six Flags in February 2016. From October 2010 until February 2016, Mr. Russ was Vice President and Chief Accounting Officer of Six Flags where he was responsible for overseeing Six Flags' accounting function and the finance functions of the western region parks. Mr. Russ began his career at Six Flags in 1989 as a seasonal employee and became a full-time employee in 1995. He held a number of management positions within Six Flags before being named Director of Internal Audit in 2004. In 2005, Mr. Russ was promoted to Controller, a position he held until being promoted to Chief Accounting Officer. Mr. Russ holds a B.B.A. degree in Accounting from the University of Texas at Arlington.

Bonnie Sherman Weber was named Senior Vice President, In-Park Services, of Six Flags in January 2018 and is responsible for culinary, retail, games, rentals, parking and other services offered throughout Six Flags' 25 parks. Ms. Weber had previously served as Park President of Six Flags Magic Mountain and Hurricane Harbor since August 2010. Ms. Weber began her career at Six Flags Magic Mountain in 1985 as a food service employee. Throughout her years at Six Flags, she has assumed the role of Park Publicist, Manager of Advertising and Promotions, and Director of Marketing. She previously worked at The Walt Disney Company and was also the Director of Worldwide Marketing at Warner Bros. for four years. A Southern California native, Ms. Weber holds a B.S. in Marketing from California State University Northridge.

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Available Information

Copies of our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports, are available free of charge through our website at investors.sixflags.com. References to our website in this Annual Report are provided as a convenience and do not constitute an incorporation by reference of the information contained on, or accessible through, the website. Therefore, such information should not be considered part of this Annual Report. These reports, and any amendments to these reports, are made available on our website as soon as reasonably practicable after we electronically file such reports with, or furnish them to, the United States Securities and Exchange Commission (the "SEC"). Copies are also available, without charge, by sending a written request to Six Flags Entertainment Corporation, 924 Avenue J East, Grand Prairie, TX 75050, Attn: Investor Relations.

Our website, investors.sixflags.com, also includes items related to corporate governance matters, including the charters of our Audit Committee, Nominating and Corporate Governance Committee and Compensation Committee, our Corporate Governance Guidelines, our Code of Business Conduct and Ethics and our Code of Ethics for Senior Management. Copies of these materials are also available, without charge, by sending a written request to Six Flags Entertainment Corporation, 924 Avenue J East, Grand Prairie, TX 75050, Attn: Investor Relations.

ITEM 1A. RISK FACTORS

Set forth below are the principal risks we believe are material to our business and should be considered by our security holders. We operate in a continually changing business environment and, therefore, new risks emerge from time to time. This section contains forward-looking statements. For an explanation of the qualifications and limitations on forward-looking statements, see "Cautionary Note Regarding Forward-Looking Statements."

Risks Relating to Our Business

General economic conditions throughout the world may have an adverse impact on our business, financial condition or results of operations.

Our success depends to a large extent on discretionary consumer spending, which is heavily influenced by general economic conditions and the availability of discretionary income. Difficult economic conditions and recessionary periods may have an adverse impact on our business and our financial condition. Negative economic conditions, coupled with high volatility and uncertainty as to the future global economic landscape, have at times had a negative effect on consumers' discretionary income and consumer confidence and similar impacts can be expected should such conditions recur. A decrease in discretionary spending due to decreases in consumer confidence in the economy or us, or a continued economic slowdown or deterioration in the economy, could adversely affect the frequency with which guests choose to visit our parks and the amount that our guests spend when they visit. The actual or perceived weakness in the economy could also lead to decreased spending by our guests. Both attendance and guest spending at our parks are key drivers of our revenue and profitability, and reductions in either could materially adversely affect our business, financial condition and results of operations.

Additionally, difficult economic conditions throughout the world could impact our ability to obtain supplies, services and credit as well as the ability of third parties to meet their obligations to us, including, for example, payment of claims by our insurance carriers, the funding of our lines of credit, or payment by our international agreement partners. Changes in exchange rates for foreign currencies could reduce international demand for our products, increase our labor and supply costs in non-U.S. markets or reduce the U.S. dollar value of revenue we earn in other markets.

Our growth strategy may not achieve the anticipated results.

Our future success will depend on our ability to grow our business, including through capital investments to improve existing parks, rides, attractions and shows, as well as in-park services and product offerings. Our business strategy for growth may also include selective expansion, both domestically and internationally, through acquisitions of assets or other strategic initiatives, such as international agreements, joint ventures and partnerships that allow us to profitably expand our business and leverage our brand. Our growth and innovation strategies require significant commitments of management resources and capital investments and may not grow our revenues at the rate we expect or at all. Our business strategy for growth also requires the other parties to our international agreements, joint ventures and partnerships to perform their obligations. The success of any acquisitions also depends on effective integration of acquired businesses and assets into our operations, which is subject to risks and uncertainties, including realization of anticipated synergies and cost savings, the ability to retain and attract personnel, the diversion of management's attention from other business concerns, and undisclosed or potential legal liabilities of acquired businesses or assets. As a result, we may not be able to recover the costs incurred in developing our new projects and initiatives or to realize their intended or projected benefits, which could materially adversely affect our business, financial condition or results of operations.

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Bad or extreme weather conditions and forecasts of bad or mixed weather conditions can adversely impact attendance at our parks.

Because most of the attractions at our parks are outdoors, attendance at our parks is adversely affected by bad or extreme weather conditions and forecasts of bad or mixed weather conditions, which negatively affects our revenues. The effects of bad weather on attendance can be more pronounced at our waterparks. We believe our operating results in certain years were adversely affected by abnormally hot, cold and/or wet weather in a number of our major U.S. markets. In addition, since a number of our parks are geographically concentrated in the eastern portion of the United States, a weather pattern that affects that area could adversely affect a number of our parks and disproportionately impact our results of operations. In addition, our parks in California and Texas are more likely to be impacted by extreme heat, wildfires, mudslides and floods than our parks in other locations. Bad weather and forecasts of bad weather on weekends, holidays or other peak periods will typically have a greater negative impact on our revenues and could disproportionately impact our results of operations.

Natural disasters could adversely impact attendance at our parks and result in decreased revenues.

A severe natural disaster, such as an earthquake, hurricane, forest fire, flood or landslide, could interrupt our operations, damage our properties and reduce the number of guests who visit our parks in affected areas. Damage to our properties could take a long time to repair and there is no guarantee that we would have adequate insurance to cover the costs of repair or the expense of the interruption to our business. Furthermore, such a disaster may interrupt or impede access to our affected properties or require evacuations and may cause visits to our affected properties to decrease for an indefinite period. For example, our waterpark in Oaxtepec, Mexico was closed for several months during the fall of 2017 following the earthquakes in central Mexico. The occurrence of such natural disasters could have a material adverse effect on our business, financial condition and results of operations.

We may not obtain the desired improvements in operational and financial performance established in our aspirational goals, including those related to our 2020 Performance Award.

We have established aspirational goals for our operational and financial performance, including our 2020 Performance Award (or Project 750) goal established in 2016 to achieve Modified EBITDA of $750 million by 2020. We may seek to reach our aspirational goals through programs targeted at our key revenue drivers, marketing programs, pricing programs, operational changes and process improvements that are intended to increase revenue, reduce costs and improve our operational and financial performance. There is no assurance these programs, changes and improvements will be successful or we will achieve our aspirational goals in the timeframe in which we seek to achieve them or at all. For example, we did not achieve our long-term aspirational goal to achieve Modified EBITDA of $600 million by 2017 and we believe that on time achievement of our 2020 Performance Award is highly unlikely; at a minimum, we are still striving for late achievement of the target in 2021.

Our operations are seasonal.

Our operations are seasonal. Approximately 75% of our annual park attendance and revenue occurs during the second and third calendar quarters of each year. As a result, when conditions or events described in the above risk factors occur during the operating season, particularly during the peak months of July and August, there is only a limited period of time during which the impact of those conditions or events can be mitigated. Accordingly, such conditions or events may have a disproportionately adverse effect on our revenues and cash flow. In addition, most of our expenses for maintenance and costs of adding new attractions are incurred when the parks are closed in the mid to late autumn and winter months. For this reason, a sequential quarter-to-quarter comparison is not a good indication of our performance or of how we will perform in the future.

Failures in, material damage to, or interruptions in our information technology systems, software or websites and difficulties in updating our systems or software or implementing new systems or software could adversely affect our business or operations.

We rely extensively on our information technology systems in the conduct of our business. We own and license or otherwise contract for sophisticated technology and systems for the operation of our business. Such systems are subject to damage or interruption from power outages, computer and telecommunications failures, computer viruses, malicious attacks, security breaches and natural and man-made disasters. We require continued and unimpeded access to these systems. Damage or interruption to our information technology systems may require a significant investment to update, remediate or replace with alternate systems, and we may suffer interruptions in our operations as a result. In addition, costs and potential problems and interruptions associated with the implementation of new or upgraded systems and technology or with maintenance or adequate support of existing systems could also disrupt or reduce the efficiency of our operations. Any material interruptions or failures in our systems, including those that may result from our failure to adequately develop, implement and maintain a robust disaster

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recovery plan and backup systems could severely affect our ability to conduct normal business operations and, as a result, could adversely affect our business operations and financial performance.

We rely on third parties for the performance of a significant portion of our information technology functions. In particular, our ticket, season pass and membership sales system relies on data communications networks and technology systems and software operated by unaffiliated third parties. The success of our business depends in part on maintaining our relationships with these third parties and their continuing ability to perform these functions and services in a timely and satisfactory manner. If we experience a loss or disruption in the provision of any of these functions or services, or they are not performed in a satisfactory manner, we may have difficulty in finding alternate providers on terms favorable to us, in a timely manner or at all, and our business could be adversely affected.

Cyber-attacks could have a disruptive effect on our business.

From time to time, we and our third-party service providers experience cyber-attacks, attempted and actual breaches of our or their information technology systems and networks or similar events, which could result in a loss of sensitive business or customer information, systems interruption or the disruption of our operations. The techniques that are used to obtain unauthorized access, disable or degrade service or sabotage systems change frequently and are difficult to detect for long periods of time, and we are accordingly unable to anticipate and prevent all data security incidents.

Even if we are fully compliant with legal standards and contractual or other requirements, we still may not be able to prevent security breaches involving sensitive data. The sophistication of efforts by hackers to gain unauthorized access to information technology systems has continued to increase in recent years. Breaches, thefts, losses or fraudulent uses of guest, employee or company data could cause consumers to lose confidence in the security of our websites, mobile applications, point of sale systems and other information technology systems and choose not to purchase from us. Such security breaches also could expose us to risks of data loss, business disruption, litigation and other costs or liabilities, any of which could adversely affect our business.

If our efforts to protect the security of information about our guests and employees and our internal data are unsuccessful, we may face costly litigation and our revenue and our reputation could suffer.

An important component of our business involves the receipt and storage of information about our guests as well as maintaining our internal business data. We are subject to various risks and costs associated with the collection, handling, storage and transmission of our guests' personal information. We have, and require certain of our vendors to have, programs in place to detect, contain and respond to data security incidents. However, because the techniques used to obtain unauthorized access, disable or degrade service, or sabotage systems change frequently and may be difficult to detect for long periods of time, we may be unable to anticipate these techniques or implement adequate preventive measures. In addition, hardware, software, or applications we develop or procure from third parties may contain defects in design or manufacture or other problems that could unexpectedly compromise information security. Unauthorized parties may also attempt to gain access to our systems or facilities, or those of third parties with whom we do business, through fraud, trickery, or other forms of deceiving our employees, contractors, and vendors.  Like many other companies, from time to time, both we and our vendors have experienced data security incidents; however, to date, these incidents have not been material to our business, financial condition or results of operations. If we or our vendors experience significant data security breaches or fail to detect and appropriately respond to significant data security breaches, we could be exposed to litigation, fines or other costs, our operations could be disrupted, and our guests could lose confidence in our ability to protect their information, which could cause them to stop purchasing tickets, memberships or season passes from us or visiting our parks altogether.

Failure to keep pace with developments in technology could adversely affect our operations or competitive position.

The theme park and waterpark industry demands the use of sophisticated technology and systems for operation of our parks, ticket, membership and season pass sales and management, and labor and inventory management. These technologies may require refinements and upgrades. The development and maintenance of these technologies may require significant investment by us. As various systems and technologies become outdated or new technology is required, we may not be able to replace or introduce them as quickly as needed or in a cost-effective and timely manner. We may not achieve the benefits we may have been anticipating from any new technology or system.

Local events and terrorist activities can adversely impact park attendance.

Lower attendance at our parks may be caused by various local activities that we may not be able to adequately anticipate or respond to. For example, terrorist alerts and threats of future terrorist activities may adversely affect attendance at our parks.

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In addition, since some of our parks are near major urban areas and appeal to teenagers and young adults, there may be disturbances at one or more parks that could negatively affect our image. This may result in a decrease in attendance at the affected parks and could adversely impact our results of operations. We cannot predict the frequency or severity of these activities and the effect that they may have on our business, financial condition or results of operations.

There is a risk of accidents occurring at our parks or competing parks which may reduce attendance and negatively impact our operations.

Our brand and our reputation are among our most important assets. Our ability to attract and retain customers depends, in part, upon the external perceptions of the Company, the quality and safety of our parks, services and rides, and our corporate and management integrity. While we carefully maintain the safety of our rides, there are inherent risks involved with these attractions. An accident or an injury (including water-borne illnesses at waterparks) at any of our parks or at parks operated by competitors, particularly an accident or injury involving the safety of guests and employees, that receives media attention, could negatively impact our brand or reputation, cause loss of consumer confidence in the Company, reduce attendance at our parks, and negatively impact our results of operations. The considerable expansion in the use of social media over recent years has compounded the impact of negative publicity. If any such incident occurs during a time of high seasonal demand, the effect could disproportionately impact our results of operations for the year.

We depend on a seasonal workforce, many of whom are paid at minimum wage.

Our park operations are dependent in part on a seasonal workforce, many of whom are paid at minimum wage. We seek to manage seasonal wages and the timing of the hiring process to ensure the appropriate workforce is in place for peak and low seasons, however, we may be unable to recruit and hire sufficient personnel to meet our business needs. In addition, we cannot guarantee that material increases in the cost of securing our seasonal workforce will not occur in the future. Increased state or federal minimum wage requirements, seasonal wages or an inadequate workforce could have an adverse impact on our results of operations. We anticipate that the recent increases to the minimum wage rates will increase our salary, wage and benefit expenses in 2019 and future years and further legislative changes could continue to increase these expenses in the future.

The theme park and waterpark industry competes with numerous entertainment alternatives and such competition may have an adverse impact on our business, financial condition or results of operations.

Our parks compete with other theme parks, waterparks and amusement parks and with other types of recreational facilities and forms of entertainment, including movies, home entertainment options, sporting events, restaurants and vacation travel. Our business is also subject to factors that affect the recreation and leisure time industries generally, such as general economic conditions, including relative fuel prices, and changes in consumer spending habits. The principal competitive factors of a park include location, price, the uniqueness and perceived quality of the rides and attractions, the atmosphere and cleanliness of the park and the quality of its food and entertainment. If we are unable to compete effectively against entertainment alternatives or on the basis of principal competitive factors of the park, our business, financial condition or results of operations may be adversely affected.

We could be adversely affected by changes in consumer tastes and preferences for entertainment and consumer products.

The success of our parks depends substantially on consumer tastes and preferences that can change in often unpredictable ways and on our ability to ensure that our parks meet the changing preferences of the broad consumer market. We conduct research and analysis before acquiring new parks or opening new rides or attractions and often invest substantial amounts before we learn the extent to which these new parks and new rides or attractions will earn consumer acceptance. If visitor volumes at our parks were to decline significantly or if new rides and entertainment offerings at our parks do not achieve sufficient consumer acceptance, revenues and margins may decline. Our results of operations may also be adversely affected if we fail to retain long-term customer loyalty or provide satisfactory customer service.

Our insurance coverage may not be adequate to cover all possible losses that we could suffer and our insurance costs may increase.

Although we maintain various safety and loss prevention programs and carry property and casualty insurance to cover certain risks, our insurance policies do not cover all types of losses and liabilities. Additionally, there can be no assurance our insurance will be sufficient to cover the full extent of all losses or liabilities for which we are insured. The majority of our current insurance policies have annual terms and expire on December 31, 2019, and we cannot guarantee we will be able to renew our current insurance policies on favorable terms, or at all. In addition, if we or other theme or waterpark operators sustain significant losses or make significant insurance claims, then our ability to obtain future insurance coverage at

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commercially reasonable rates could be materially adversely affected. If our insurance coverage is not adequate, or we become subject to damages that cannot by law be insured against, such as punitive damages or certain intentional misconduct by our employees, this could adversely affect our financial condition or results of operations.

If we are not able to fund capital expenditures and invest in future attractions and projects in our parks, our revenues could be negatively impacted.

Because a principal competitive factor for a theme park or a waterpark is the uniqueness and perceived quality of its rides and attractions, we need to make continued capital investments through maintenance and the regular addition of new rides and attractions. A key element for our revenue growth is strategic capital spending on such investments. Our ability to fund capital expenditures will depend on our ability to generate sufficient cash flow from operations and to raise capital from third parties. We cannot provide assurance our operations will be able to generate sufficient cash flow to fund such costs, or that we will be able to obtain sufficient financing on adequate terms, or at all, which could cause us to delay or abandon certain projects or plans. In addition, any construction delays or ride downtime can adversely affect our attendance and our ability to realize revenue growth.

Incidents involving food contamination, product recalls, product liability claims and associated costs could adversely affect our reputation and our financial condition.

The sale of food, toys and other retail products involves legal and other risks. While we dedicate substantial resources to food safety matters to enable customers to enjoy safe, quality food products, food safety events, including instances of food-borne illness (such as salmonella or E. Coli) could occur in our parks. Instances or reports, whether true or not, of food-safety issues could negatively affect our sales and reputation and could possibly lead to product liability claims, litigation (including class actions), or other damages. We may need to recall food products if they become contaminated, and we may need to recall toys, games or other retail merchandise if there is a design or product defect. Even though we are resellers of food, toys and other retail products, we may be liable if the consumption or purchase of any of the products we sell causes illness or injury. A recall could result in losses due to the cost of the recall, the destruction of product and lost sales due to the unavailability of product for a period of time. A significant food or retail product recall could also result in adverse publicity, damage to our reputation and loss of consumer confidence in our parks, which could have a material adverse effect on our business, financial condition or results of operations.

We may be unable to purchase or contract with third parties to manufacture theme park or waterpark rides and attractions.

We may be unable to purchase or contract with third parties to build high quality rides and attractions and to continue to service and maintain those rides and attractions at competitive or beneficial prices, or to provide the replacement parts needed to maintain the operation of such rides. In addition, if our third-party suppliers' financial condition deteriorates or they go out of business, we may not be able to obtain the full benefit of manufacturer warranties or indemnities typically contained in our contracts, or may need to incur greater costs for the maintenance, repair, replacement or insurance of these assets.

Adverse litigation judgments or settlements resulting from legal proceedings in which we may be involved in the normal course of our business could adversely affect our financial condition or results of operations.

We are subject to allegations, claims and legal actions arising in the ordinary course of our business, which may include claims by third parties, including guests who visit our parks, our employees or regulators. The outcome of these proceedings cannot be predicted. If any of these proceedings is determined adversely to us, or if we receive a judgment, a fine or a settlement involving a payment of a material sum of money, or injunctive relief is issued against us, our business, financial condition and results of operations could be materially adversely affected. Litigation can also be expensive, lengthy and disruptive to normal business operations, including to our management due to the increased time and resources required to respond to and address the litigation.

Additionally, from time to time, animal activist and other third-party groups may make negative public statements about us or bring claims before government agencies or lawsuits against us. Such claims and lawsuits sometimes are based on allegations that we do not properly care for some of our featured animals. On other occasions, such claims and/or lawsuits are specifically designed to change existing law or enact new law in order to impede our ability to retain, exhibit, acquire or breed animals. While we seek to comply with all applicable federal and state laws and vigorously defend ourselves in any lawsuits, there are no assurances as to the outcome of future claims and lawsuits that could be brought against us. An unfavorable outcome in any legal proceeding could have a material adverse effect on our business, financial condition and results of operations. In addition, associated negative publicity could adversely affect our reputation, financial condition and results of operations.

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We may not be able to realize the benefits of our international agreements.

Various external factors, including difficult economic and political conditions throughout the world, could negatively affect the progress of our initiatives to develop new Six Flags-branded parks outside of North America. These initiatives could be delayed and the ultimate success of such parks may be uncertain. For example, the project in Dubai is currently on hold and some of the China parks' opening schedules have been delayed.

Some factors that will be important to the success of our international agreement initiatives are different than those affecting our existing parks. Tastes naturally vary by region, and consumers in new international markets into which we expand our brand may not embrace the parks’ offerings to the same extent as consumers in our existing markets. International agreements are also subject to additional risks, including the performance of our partners and their ability to obtain financing and government approvals; the impact of economic fluctuations in economies outside of the U.S.; difficulties and costs of staffing and managing foreign operations due to distance, language and cultural differences; changes or uncertainties in economic, legal, regulatory, social and political conditions; the enforceability of intellectual property and contract rights; and foreign currency exchange rate fluctuations, currency controls, and potentially adverse tax consequences of overseas operations. If we do not realize the benefits of such transactions, it could have an adverse effect on our financial performance.

Our leases contain default provisions that, if enforced or exercised by the landlord, could significantly impact our operations at those parks.

Of our 25 theme parks and waterparks, 11 are located on property that we lease and do not own. Certain of our leases permit the landlord to terminate the lease if there is a default under the lease, including, for example, our failure to pay rent, utilities and applicable taxes in a timely fashion or to maintain certain insurance. If a landlord were to terminate a lease, it would halt our operations at that park and, depending on the size of the park, could have a negative impact on our financial condition and results of operations. In addition, any disputes that may result from such a termination may be expensive to pursue and may divert money and management's attention from our other operations and adversely affect our business, financial condition or results of operations.

Our intellectual property rights are valuable, and any inability to protect them could adversely affect our business.

Our intellectual property, including our trademarks and domain names and other proprietary rights, constitutes a significant part of our value. To protect our intellectual property rights, we rely upon a combination of trademark, trade secret and unfair competition laws of the United States and other countries, as well as contract provisions and third-party policies and procedures governing internet/domain name registrations. However, there can be no assurance these measures will be successful in any given case, particularly in those countries where the laws do not protect our proprietary rights as fully as in the United States. We may be unable to prevent the misappropriation, infringement or violation of our intellectual property rights, breach of any contractual obligations to us, or independent development of intellectual property that is similar to ours, any of which could reduce or eliminate any competitive advantage we have developed, adversely affect our revenues or otherwise harm our business.

We may be subject to claims for infringing the intellectual property rights of others, which could be costly and result in the loss of intellectual property rights.

We cannot be certain that we do not and will not infringe the intellectual property rights of others. We have been in the past, and may be in the future, subject to litigation and other claims in the ordinary course of our business based on allegations of infringement or other violations of the intellectual property rights of others. Regardless of their merits, intellectual property claims can divert the efforts of our personnel and are often time-consuming and expensive to litigate or settle. In addition, to the extent claims against us are successful, we may have to pay substantial monetary damages or discontinue, modify, or rename certain products or services that are found to be in violation of another party's rights. We may have to seek a license (if available on acceptable terms, or at all) to continue offering products and services, which may increase our operating expenses.

Increased labor costs and employee health and welfare benefits may reduce our results of operations.

Labor is a primary component in the cost of operating our business. We devote significant resources to recruiting and training our managers and employees. Increased labor costs due to competition, increased minimum wage or employee benefit costs or otherwise, would adversely impact our operating expenses. The Patient Protection and Affordable Care Act of 2010 and the amendments thereto contain provisions which will impact our future healthcare costs. We do not anticipate these changes will result in a material increase in our operating costs. Our results of operations are also substantially affected by costs of retirement, including as a result of macro-economic factors beyond our control, such as declines in investment returns on pension plan assets and changes in discount rates used to calculate pension and related liabilities.

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Additionally, we contribute to multiple defined benefit multiemployer pension plans on behalf of our collectively bargained employees of Six Flags Great Adventure LLC. If we were to cease contributing to or otherwise incur a withdrawal from any such plans, we could be obligated to pay withdrawal liability assessments based on the underfunded status (if any) of such plans at the time of the withdrawal. The amount of any multiemployer pension plan underfunding can fluctuate from year to year, and thus there is a possibility that the amount of withdrawal liability that we could incur in the future could be material, which could materially adversely affect our financial condition.

Unionization activities or labor disputes may disrupt our operations and affect our profitability.

As of December 31, 2018, approximately 17% of our full-time and approximately 11% of our seasonal employees were subject to labor agreements with local chapters of national unions. We have collective bargaining agreements in place for certain employees at Six Flags Over Georgia, Six Flags Magic Mountain, Six Flags Great Adventure, Six Flags Over Texas, Six Flags St. Louis, and La Ronde. New unionization activity or a labor dispute involving our employees could disrupt our operations and reduce our revenues, and resolution of unionization activities or labor disputes could increase our costs. Litigation relating to employment and/or wage and hour disputes could also increase our operating expenses. Such disrupted operations, reduced revenues or increased costs could have a material adverse effect on our financial condition and results of operations.

Our operations and our ownership of property subject us to environmental, health and safety and other regulations, which create uncertainty regarding future expenditures and liabilities.

Our operations involve wastewater and stormwater discharges and air emissions, and as a result are subject to environmental, health and safety laws, regulations and permitting requirements. These requirements are administered by the U.S. Environmental Protection Agency and the states and localities where our parks are located (and can also often be enforced through citizen suit provisions), and include the requirements of the Clean Water Act and the Clean Air Act. Our operations also involve maintaining underground and aboveground storage tanks, and managing and disposing of hazardous substances, chemicals and materials and are subject to federal, state and local laws and regulations regarding the use, generation, manufacture, storage, handling and disposal of these substances, chemicals and materials, including the Resource Conservation and Recovery Act and the Comprehensive Environmental Response, Compensation and Liability Act ("CERCLA"). A portion of our capital expenditures budget is intended to ensure continued compliance with environmental, health and safety laws, regulations and permitting requirements. In the event of contamination or injury as a result of a release of or exposure to regulated materials, we could be held liable for any resulting damages. For example, pursuant to CERCLA, past and current owners and operators of facilities and persons arranging for disposal of hazardous substances may be held strictly, jointly and severally liable for costs to remediate releases and threatened releases of hazardous substances. The costs of investigation, remediation or removal of regulated materials may be substantial, and the presence of those substances, or the failure to remediate property properly, may impair our ability to use, transfer or obtain financing regarding our property. Our activities may be affected by new legislation or changes in existing environmental, health and safety laws. For example, the state or federal government having jurisdiction over a given area may enact legislation and the U.S. Environmental Protection Agency or applicable state entity may propose new regulations or change existing regulations that could require our parks to reduce certain emissions or discharges. Such action could require our parks to install costly equipment or increase operating expenses. We may be required to incur costs to remediate potential environmental hazards, mitigate environmental risks in the future, or comply with other environmental requirements.

We also are subject to federal and state laws, which prohibit discrimination and other laws regulating the design and operation of facilities, such as the Americans With Disabilities Act. Compliance with these laws and regulations can be costly and increase our exposure to litigation and governmental proceedings, and a failure or perceived failure to comply with these laws could result in negative publicity that could harm our reputation, which could adversely affect our business.

We may not be able to attract and retain key management and other key employees.

Our employees, particularly our key management, are vital to our success and difficult to replace. We may be unable to retain them or to attract other highly qualified employees, particularly if we do not offer employment terms competitive with the rest of the market. Failure to attract and retain highly qualified employees, or failure to develop and implement a viable succession plan, could result in inadequate depth of institutional knowledge or skill sets, adversely affecting our business.

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Risks Related to Our Indebtedness and Common Stock

A portion of our cash flow is required to be used to fund our substantial monetary obligations.

We must satisfy the following obligations with respect to the Partnership Parks:

• We must make annual distributions to our partners in the Partnership Parks, which will amount to approximately $72.5 million in 2019 (based on our ownership of units as of December 31, 2018, our share of the distribution will be approximately $31.7 million), with similar amounts (adjusted for changes in cost of living) payable in future years.

• We must spend a minimum of approximately 6% of each of the Partnership Parks' annual revenues over specified periods for capital expenditures.

• Each year we must offer to purchase all outstanding limited partnership units from our partners in the Partnership Parks. The remaining redeemable units of the Georgia limited partner and Texas limited partner, respectively, represent a current redemption value for the limited partnership units of approximately $525.3 million as of December 31, 2018. As we purchase additional units, we are entitled to a proportionate increase in our share of the minimum annual distributions. In future years, we may need to incur indebtedness under the Amended and Restated Credit Facility to satisfy such unit purchase obligations.

We expect to use cash flow from the operations at the Partnership Parks to satisfy all or part of our annual distribution and capital expenditure obligations with respect to these parks before we use any of our other funds. The two partnerships generated approximately $77.6 million of cash in 2018 from operating activities after deduction of capital expenditures and excluding the impact of short-term intercompany advances from or repayments to us. As of December 31, 2018, we had loans outstanding of $239.3 million to the partnerships that own the Partnership Parks, primarily to fund the acquisition of Six Flags White Water Atlanta, and to make capital improvements and distributions to the limited partners in prior years. The obligations relating to SFOG continue until 2027 and those relating to SFOT continue until 2028. In the event of a default by us under the Subordinated Indemnity Agreement or of our obligations to our partners in the Partnership Parks, these arrangements would permit Time Warner to take full control of both the entities that own limited partnership units and the managing partner, and we would lose control of the Partnership Parks. In addition, such a default could trigger an event of default under the Amended and Restated Credit Facility. For more information regarding the Subordinated Indemnity Agreement, see "Business—Partnership Park Arrangements."

The vast majority of our capital expenditures in 2019 and beyond will be made on a discretionary basis, although such expenditures are important to the parks' ability to sustain and grow revenues. We spent $133.1 million on capital expenditures, net of property insurance recoveries, for all of our continuing operations in the 2018 calendar year. Our business plan includes targeted annual capital spending of approximately 9% of revenues in 2019. We may not, however, achieve our targeted rate of capital spending, which may cause us to spend in excess of, or less than, our anticipated rate.

Our indebtedness under the Amended and Restated Credit Facility and our other obligations could have material negative consequences to us and investors in our securities. The following could materially adversely affect our business, financial condition or results of operations:

• We may not be able to satisfy all of our obligations, including, but not limited to, our obligations under the instruments governing our outstanding debt, which may cause a cross-default or cross-acceleration on other debt we may have incurred.

• We could have difficulties obtaining necessary financing in the future for working capital, capital expenditures, debt service requirements, refinancing or other purposes.

• We could have difficulties obtaining additional financing to fund our annual Partnership Park obligations if the amount of the Amended and Restated Credit Facility is insufficient.

• We would have to use a significant portion of our cash flow to make payments on our debt and to satisfy the other obligations set forth above, which may reduce the capital available for operations and expansion.

• Adverse economic or industry conditions may have a more negative impact on us.

We cannot be sure that cash generated from our parks will be as high as we expect or that our expenses will not be higher than we expect. Because a portion of our expenses are fixed in any given year, our operating cash flows are highly dependent on revenues, which are largely driven by attendance levels, in-park sales, accommodations and sponsorship and international agreement activity. A lower amount of cash generated from our parks or higher expenses than expected, when coupled with our debt obligations, could adversely affect our ability to fund our operations.

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The instruments governing our indebtedness include financial and other covenants that will impose restrictions on our financial and business operations.

The instruments governing our indebtedness restrict our ability to, among other things, incur additional indebtedness, incur liens, make investments, sell assets, pay dividends, repurchase stock or engage in transactions with affiliates. In addition, the Amended and Restated Credit Facility contains financial covenants that will require us to maintain a minimum interest coverage ratio and a maximum senior secured leverage ratio. These covenants may have a material impact on our operations. If we fail to comply with the covenants in the Amended and Restated Credit Facility or the indenture governing Holdings' $300.0 million of 4.875% senior unsecured notes due 2024 (the "2024 Notes"), $700.0 million of 4.875% senior unsecured notes due 2024 (the "2024 Notes Add-on"), and $500.0 million of 5.50% senior unsecured notes due 2027 (the "2027 Notes") and are unable to obtain a waiver or amendment, an event of default would result under the applicable debt instrument.

Events beyond our control, such as weather and economic, financial and industry conditions, may affect our ability to continue meeting our financial covenant ratios under the Amended and Restated Credit Facility. The need to comply with these financial covenants and restrictions could limit our ability to execute our strategy and expand our business or prevent us from borrowing more money when necessary.

The Amended and Restated Credit Facility and the indentures governing the 2024 Notes, the 2024 Notes Add-on and the 2027 Notes also contain other events of default customary for financings of these types, including cross defaults to certain other indebtedness, cross acceleration to other indebtedness and certain change of control events. If an event of default were to occur, the lenders under the Amended and Restated Credit Facility could declare outstanding borrowings under the Amended and Restated Credit Facility immediately due and payable and the holders of the 2024 Notes, the 2024 Notes Add-on and the 2027 Notes could elect to declare the 2024 Notes, the 2024 Notes Add-on and the 2027 Notes to be due and payable, together with accrued and unpaid interest. We cannot provide assurance we would have sufficient liquidity to repay or refinance such indebtedness if it was accelerated upon an event of default. In addition, an event of default or declaration of acceleration under the Amended and Restated Credit Facility could also result in an event of default under other indebtedness.

We can make no assurances we will be able to comply with these restrictions in the future or that our compliance would not cause us to forego opportunities that might otherwise be beneficial to us.

We may be unable to service our indebtedness.

Our ability to make scheduled payments on and to refinance our debt, including the Amended and Restated Credit Facility and the 2024 Notes, the 2024 Notes Add-on and the 2027 Notes, depends on and is subject to our financial and operating performance, which in turn is affected by general and regional economic, financial, competitive, business and other factors beyond our control, including the availability of financing in the banking and capital markets. We cannot provide assurance our business will generate sufficient cash flow from operations or future borrowings will be available to us in an amount sufficient to enable us to service our debt, to refinance our debt or to fund our other liquidity needs. If we are unable to meet our debt obligations or to fund our other liquidity needs, we may be forced to reduce or delay scheduled expansion and capital expenditures, sell material assets or operations, obtain additional capital or restructure our debt, which could cause us to default on our debt obligations and impair our liquidity. Any refinancing of our indebtedness could be at higher interest rates and may require us to comply with more onerous covenants, which could further restrict our business operations. If we are required to dispose of material assets or operations or restructure our debt to meet our debt service and other obligations, we cannot provide assurance the terms of any such transaction will be satisfactory to us or if, or how soon, any such transaction could be completed.

The market price of Holdings' common stock may be volatile, which could cause the value of an investment in Holdings' common stock to decline.

We can give no assurances about future liquidity in the trading market for Holdings' common stock. If there is limited liquidity in the trading market for Holdings' common stock, a sale of a large number of shares of Holdings' common stock could be adversely disruptive to the market price of Holdings' common stock.

Numerous factors, including many over which we have no control, may have a significant impact on the market price of Holdings' common stock. These risks include those described or referred to in this "Risk Factors" section and in other documents incorporated herein by reference as well as, among other things:

• Our operating and financial performance and prospects;

• Our ability to repay our debt;

• Our access to financial and capital markets to refinance our debt or replace the existing credit facilities;

• Investor perceptions of us and the industry and markets in which we operate;

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• Our dividend policy;

• Our stock repurchase program;

• Future sales of equity or equity-related securities;

• Changes in earnings estimates or buy/sell recommendations by analysts; and

• General financial, domestic, economic and other market conditions.

Changes in our credit ratings could adversely affect the price of Holdings' common stock.

We receive debt ratings from the major credit rating agencies in the United States. Factors that may impact our credit ratings include the sizable attendance and revenue generated from our portfolio of geographically diversified regional theme parks and waterparks, vulnerability to cyclical discretionary consumer spending, and seasonality of our operations. In March 2017, in connection with the issuance of the 2027 Notes, Moody's assigned a B2 rating to the 2027 Notes, upgraded the 2024 Notes from B3 to B2, and reaffirmed our Ba1 rating on the credit facility and our B1 corporate family rating. In March 2017, Standard & Poor's assigned a BB- rating to the 2027 Notes, and reaffirmed our BB- rating on the 2024 Notes and our BB corporate credit rating. Both rating agencies have placed our ratings on "stable outlook." We cannot provide assurance our ratings will remain the same. A negative change in our ratings or the perception such a change might occur could adversely affect the market price of Holdings' common stock.

Various factors could affect Holdings' ability to sustain its dividend.

Holdings' ability to pay a dividend on its common stock or sustain it at current levels is subject to our ability to generate sufficient cash flow to pay dividends. In addition, our debt agreements contain certain limitations on the amount of cash we are permitted to distribute to our stockholders by way of dividend or stock repurchase.

Holdings is a holding company and is dependent on dividends and other distributions from its subsidiaries.

Holdings is a holding company and substantially all of its operations are conducted through direct and indirect subsidiaries. As a holding company, it has no significant assets other than its equity interests in its subsidiaries. Accordingly, Holdings is dependent on dividends and other distributions from its subsidiaries to meet its obligations including the obligations under the Amended and Restated Credit Facility, the 2024 Notes, the 2024 Notes Add-on, and the 2027 Notes, and to pay the dividend on Holdings' common stock. If these dividends and other distributions are not sufficient for Holdings to meets its financial obligations, or not available to Holdings due to restrictions in the instruments governing our indebtedness, it could cause Holdings to default on our debt obligations, which would impair our liquidity and adversely affect our financial condition and our business. We had $44.6 million of cash and cash equivalents on a consolidated basis at December 31, 2018, of which $2.2 million was held at Holdings.

Provisions in Holdings' corporate documents and the law of the State of Delaware as well as change of control provisions in certain of our debt and other agreements could delay or prevent a change of control, even if that change would be beneficial to stockholders or could have a materially negative impact on our business.

Certain provisions in Holdings' Restated Certificate of Incorporation, the Amended and Restated Credit Facility and the indentures governing the 2024 Notes, the 2024 Notes Add-on and the 2027 Notes may have the effect of deterring transactions involving a change in control of us, including transactions in which stockholders might receive a premium for their shares.

Holdings' Certificate of Incorporation provides for the issuance of up to 5,000,000 shares of preferred stock with such designations, rights and preferences as may be determined from time to time by Holdings' Board of Directors. The authorization of preferred shares empowers Holdings' Board of Directors, without further stockholder approval, to issue preferred shares with dividend, liquidation, conversion, voting or other rights that could adversely affect the voting power or other rights of the holders of the common stock. If issued, the preferred stock could also dilute the holders of Holdings' common stock and could be used to discourage, delay or prevent a change of control of us.

Holdings is also subject to the anti-takeover provisions of the Delaware General Corporation Law, which could have the effect of delaying or preventing a change of control in some circumstances. All of the foregoing factors could materially adversely affect the price of Holdings' common stock.

The Amended and Restated Credit Facility contains provisions pursuant to which it is an event of default if any "person" becomes the beneficial owner of more than 35% of the common stock. This could deter certain parties from seeking to acquire us and if any "person" were to become the beneficial owner of more than 35% of the common stock, we may not be able to repay such indebtedness.

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We have the exclusive right to use certain Warner Bros. and DC Comics characters in our parks in the U.S. (except in the Las Vegas metropolitan area), Canada, Mexico and certain other countries. Warner Bros. can terminate these licenses under certain circumstances, including the acquisition of us by persons engaged in the movie or television industries. This could deter certain parties from seeking to acquire us.

ITEM 1B. UNRESOLVED STAFF COMMENTS

We have received no written comments regarding our periodic or current reports from the staff of the SEC that were issued 180 days or more preceding the end of our 2018 fiscal year and that remain unresolved.

ITEM 2. PROPERTIES

Set forth below is a brief description of our material real estate as of December 31, 2018. See also "Business—Description of Parks."

• Six Flags America, Largo, Maryland—515 acres (owned)

• Six Flags Discovery Kingdom, Vallejo, California—135 acres (owned)

• Six Flags Fiesta Texas, San Antonio, Texas—220 acres (owned)

• Six Flags Great Adventure & Safari and Hurricane Harbor, Jackson, New Jersey—2,200 acres (owned)

• Six Flags Great America, Gurnee, Illinois—304 acres (owned)

• Six Flags Hurricane Harbor, Arlington, Texas—47 acres (owned)

• Six Flags Hurricane Harbor, Valencia, California—12 acres (owned)

• Six Flags Hurricane Harbor, Oaxtepec, Mexico—67 acres (leasehold interest)⁽¹⁾ 

• Six Flags Magic Mountain, Valencia, California—250 acres (owned)

• Six Flags Mexico, Mexico City, Mexico—110 acres (occupied pursuant to a permit agreement)⁽²⁾ 

• Six Flags New England, Agawam, Massachusetts—262 acres (substantially all owned)

• Six Flags Over Georgia, Austell, Georgia—283 acres (leasehold interest)⁽³⁾ 

• Six Flags Over Texas, Arlington, Texas—217 acres (leasehold interest)⁽³⁾ 

• Six Flags St. Louis, Eureka, Missouri—320 acres (owned)

• Six Flags White Water Atlanta, Marietta, Georgia—69 acres (owned)⁽⁴⁾ 

• La Ronde, Montreal, Canada—146 acres (leasehold interest)⁽⁵⁾ 

• The Great Escape and Lodge, Queensbury, New York—345 acres (owned)

• Six Flags Hurricane Harbor Concord, Concord, California—24 acres (leasehold)⁽⁶⁾ 

• Six Flags Darien Lake, Buffalo, New York - 982 acres (leasehold)⁽⁷⁾ 

• Frontier City, Oklahoma City, Oklahoma - 113 acres (leasehold)⁽⁷⁾ 

• White Water Bay, Oklahoma City, Oklahoma - 24 acres (leasehold)⁽⁷⁾ 

• Six Flags Hurricane Harbor Phoenix, Glendale, Arizona - 33 acres (leasehold)⁽⁸⁾ 

• Six Flags Hurricane Harbor Splashtown, Spring, Texas - 46 acres (leasehold)⁽⁷⁾ 

________________________________________

(1) The site is leased from the Mexican Social Security Institute. The lease expires in 2036. The waterpark opened to the public in 2017.

(2) The permit agreement is with the Federal District of Mexico City. The agreement expires in 2024.

(3) Lessor is the limited partner of the partnership that owns the park. The SFOG and SFOT leases expire in 2027 and 2028, respectively, at which time we have the option to acquire all of the interests in the respective lessor that we have not previously acquired.

(4) Owned by the Georgia partnership.

(5) The site is leased from the City of Montreal. The lease expires in 2065.

(6) The site is leased from EPR Parks, LLC pursuant to a sublease that expires in 2035 or the earlier expiration of the ground lease. We began operating the waterpark in 2017.

(7) These sites are leased from EPR Parks, LLC pursuant to a lease that expires in 2037. We began operating these parks in 2018.

(8) This site is leased from EPR Parks, LLC pursuant to a lease that expires in 2033. We began operating the waterpark in 2018.

In addition to the foregoing, we also lease office space and a limited number of rides and attractions at our parks. See Note 14 to the consolidated financial statements included elsewhere in this Annual Report for a discussion of lease commitments. We consider our properties to be well maintained, in good condition and adequate for their present uses and business requirements. We have granted to our lenders under the Amended and Restated Credit Facility agreement, a mortgage on substantially all of our owned United States properties.

ITEM 3. LEGAL PROCEEDINGS

The nature of the industry in which we operate tends to expose us to claims by guests, generally for injuries. Accordingly, we are party to various legal actions arising in the normal course of business, including the proceedings discussed below.

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On January 7, 2016, a potential class action complaint was filed against Six Flags Entertainment Corporation in the Circuit Court of Lake County, Illinois. On April 22, 2016, Great America, LLC was added as a defendant. The complaint asserts that we violated the Illinois Biometric Information Privacy Act ("BIPA") in connection with the admission of season pass holders and members through the finger scan program that commenced in the 2014 operating season at Six Flags Great America in Gurnee, Illinois, and seeks statutory damages, attorneys' fees and an injunction. An aggrieved party under BIPA may recover (i) $1,000 if a company is found to have negligently violated BIPA or (ii) $5,000 if found to have intentionally or recklessly violated BIPA, plus reasonable attorneys' fees in each case. The complaint does not allege that any information was misused or disseminated. On April 7, 2017, the trial court certified two questions for consideration by the Illinois Appellate Court of the Second District. On June 7, 2017, the Illinois Appellate Court granted our motion to appeal. Accordingly, two questions regarding the interpretation of BIPA were certified for consideration by the Illinois Appellate Court. On December 21, 2017, the Illinois Appellate Court found in our favor, holding that the plaintiff had to allege more than a technical violation of BIPA and had to be injured in some way in order to have a right of action. On March 1, 2018, the plaintiff filed a petition for leave to appeal to the Illinois Supreme Court. On May 30, 2018, the Illinois Supreme Court granted the plaintiff's leave to appeal and oral arguments were heard on November 20, 2018. On January 25, 2019, the Illinois Supreme Court found in favor of the plaintiff holding that the plaintiff does not need to allege an actual injury beyond the violation of his rights under BIPA in order to proceed with a complaint. We intend to continue to vigorously defend ourselves against this litigation. Since this litigation is still in an early stage, the outcome is currently not determinable and a reasonable estimate of loss or range of loss in excess of the immaterial amount that we have recorded for this litigation cannot be made.

During 2017, four potential class action complaints were filed against Six Flags Entertainment Corporation or one of its subsidiaries. Complaints were filed on August 11, 2017 in the Circuit Court of Lake County, Illinois, on September 1, 2017 in the United States District Court for the Northern District of Georgia, on September 11, 2017 in the Superior Court of Los Angeles County, California, and on November 30, 2017 in the Superior Court of Ocean County, New Jersey. The complaints allege that we, in violation of federal law, printed more than the last five digits of a credit or debit card number on customers’ receipts, and/or the expiration dates of those cards. A willful violation may subject a company to liability for actual damages or statutory damages between $100 and $1,000 per person, punitive damages in an amount determined by a court, and reasonable attorneys’ fees, all of which are sought by the plaintiffs. The complaints do not allege that any information was misused. We intend to vigorously defend ourselves against this litigation. Since this litigation is in an early stage, the outcome is currently not determinable, and a reasonable estimate of loss or range of loss cannot be made.    

We are party to various other legal actions, including intellectual property disputes and employment and/or wage and hour litigation, arising in the normal course of business. We do not expect to incur any material liability by reason of such actions.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

PART II

ITEM 5. MARKET FOR THE REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

Holdings' common stock trades on the New York Stock Exchange under the symbol "SIX."

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The table below presents the high and low sales price of our common stock and the quarterly dividend paid per share of common stock during the years ended December 31, 2018 and 2017:

	Sales Price Per Share				Dividends Declared Per Share
	High		Low
2019
First Quarter (through February 14, 2019)	$	64.28	$	52.50	$	0.82
2018
Fourth Quarter	$	69.82	$	49.79	$	0.82
Third Quarter	$	72.39	$	62.67	$	0.78
Second Quarter	$	73.38	$	58.93	$	0.78
First Quarter	$	70.44	$	59.50	$	0.78
2017
Fourth Quarter	$	67.94	$	58.76	$	0.70
Third Quarter	$	61.66	$	51.25	$	0.64
Second Quarter	$	65.19	$	57.01	$	0.64
First Quarter	$	62.63	$	57.05	$	0.64

Holders of Record

As of February 14, 2019, there were approximately 66 stockholders of record of Holdings' common stock. This does not reflect holders who beneficially own common stock held in nominee or street name.

Quarterly Dividends

In November 2018, Holdings' Board of Directors increased the quarterly cash dividend from $0.78 per share of common stock to $0.82 per share of common stock.

The amount and timing of any future dividends payable on Holdings' common stock are within the sole discretion of Holdings' Board of Directors. Holdings' Board of Directors currently anticipates continuing to pay cash dividends on Holdings' common stock on a quarterly basis. However, the declaration and amount of any future dividends depend on various factors including the Company's earnings, cash flows, financial condition and other factors. Furthermore, the Amended and Restated Credit Facility and the indentures governing the 2024 Notes, the 2024 Notes Add-on and the 2027 Notes include certain limitations on Holdings' ability to pay dividends. For more information, see "Management's Discussion and Analysis of Financial Condition and Results of Operations - Liquidity and Capital Resources" in Item 7 of this Annual Report and Note 7 to the consolidated financial statements in Item 8 of this Annual Report.

Issuer Purchases of Equity Securities

On June 7, 2016, Holdings announced that its Board of Directors approved a new stock repurchase program that permitted Holdings to repurchase an incremental $500.0 million in shares of Holdings' common stock (the "June 2016 Stock Repurchase Plan"). Holdings fully utilized the availability under the June 2016 Stock Repurchase Plan by May 2017. Throughout the program, Holdings repurchased 8,392,000 shares at a cumulative cost of approximately $500.0 million and an average price per share of $59.58.

On March 30, 2017, Holdings announced that its Board of Directors approved a new stock repurchase plan that permits Holdings to repurchase an incremental $500.0 million in shares of Holdings' common stock (the "March 2017 Stock Repurchase Plan"). As of February 14, 2019, Holdings had repurchased 4,603,000 shares at a cumulative cost of approximately $268.2 million and an average price per share of $58.27 under the March 2017 Stock Repurchase Plan, leaving approximately $231.8 million available for permitted repurchases.

The following table sets forth information regarding purchases of Holdings' common stock under the March 2017 Stock Repurchase Plan during the three months ended December 31, 2018:

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	Period	Total number of shares purchased	Average price paid per share		Total number of  shares purchased as part of publicly announced plans or programs	Approximate dollar  value of shares that  may yet be purchased under the plans or programs
Month 1	October 1 - October 31	—	—		—	$	261,779,000
Month 2	November 1 - November 30	518,212	$	57.15	518,212	$	232,165,000
Month 3	December 1 - December 31	6,657	$	57.97	6,657	$	231,779,000
		524,869	$	57.16	524,869	$	231,779,000

Performance Graph

The following graph shows a comparison of the five-year cumulative total stockholder return on Holdings' common stock (assuming all dividends were reinvested), The Standard & Poor's ("S&P") 500 Stock Index, The S&P Midcap 400 Index and The S&P Entertainment Movies & Entertainment Index. The stock price performance shown in the graph is not necessarily indicative of future price performance.

COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURN*

Among Six Flags Entertainment Corporation, the S&P 500 Index, the S&P Midcap 400 Index,

and the S&P Movies & Entertainment Index

________________________________

*$100 invested on 12/31/13 in stock or index, including reinvestment of dividends. Fiscal year ending December 31.

Copyright© 2018 S&P, a division of The McGraw-Hill Companies, Inc. All rights reserved.

	12/31/2013	12/31/2014	12/31/2015	12/31/2016	12/31/2017	12/31/2018
Six Flags Entertainment Corporation	100.00	123.10	163.96	187.18	217.16	190.47
S&P 500	100.00	113.69	115.26	129.05	157.22	150.33
S&P Midcap 400	100.00	109.77	107.38	129.65	150.71	134.01
S&P Movies & Entertainment	100.00	117.82	106.93	118.02	123.94	124.69

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ITEM 6. SELECTED FINANCIAL DATA

The following financial data is derived from our audited financial statements. You should review this information in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operations" in Item 7 of this Annual Report and the historical financial statements and related notes contained in this Annual Report.

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	Year Ended December 31,
(Amounts in thousands, except per share data)	2018			2017			2016			2015			2014
Statement of Operations Data:
Park Admissions	$	810,064		$	741,275		$	715,413		$	687,819		$	641,535
Park food, merchandise and other	553,527			524,582			521,167			500,190			460,131
Sponsorship, international agreements and accommodations	100,116			93,217			82,818			75,929			74,127
Total revenue	1,463,707			1,359,074			1,319,398			1,263,938			1,175,793
Operating expenses (excluding depreciation and amortization shown separately below)	574,724			511,873			490,116			466,491			430,450
Selling, general and administrative expenses (excluding depreciation and amortization shown separately below)	132,168			159,070			293,005			235,046			309,901
Costs of products sold	121,803			110,374			109,579			100,709			90,515
Other net periodic pension (benefit) expense	(5,169		)	(3,322		)	(1,920		)	(1,508		)	8,035
Depreciation and amortization	115,693			111,671			106,893			107,411			108,107
Loss on disposal of assets	1,879			3,959			1,968			9,882			5,860
Gain on sale of investee	—			—			—			—			(10,031		)
Interest expense, net	107,243			99,010			81,872			75,903			72,589
Loss on debt extinguishment, net	—			37,116			2,935			6,557			—
Other expense, net	3,508			271			1,684			223			356
Income from continuing operations before income taxes and discontinued operations	411,858			329,052			233,266			263,224			160,011
Income tax expense	95,855			16,026			76,539			70,369			46,522
Income from continuing operations before discontinued operations	316,003			313,026			156,727			192,855			113,489
Income from discontinued operations	—			—			—			—			545
Net income	316,003			313,026			156,727			192,855			114,034
Net income attributable to noncontrolling interests	(40,007		)	(39,210		)	(38,425		)	(38,165		)	(38,012		)
Net income attributable to Six Flags Entertainment Corporation	$	275,996		$	273,816		$	118,302		$	154,690		$	76,022
Amounts attributable to Six Flags Entertainment Corporation common stockholders:
Income from continuing operations	$	275,996		$	273,816		$	118,302		$	154,690		$	75,477
Income from discontinued operations	—			—			—			—			545
Net income	$	275,996		$	273,816		$	118,302		$	154,690		$	76,022
Weighted-average common shares outstanding:
Basic:	84,100			86,802			92,349			93,580			94,477
Diluted:	85,445			88,494			94,398			97,981			98,139
Net income per average common share outstanding—basic:
Income from continuing operations	$	3.28		$	3.15		$	1.28		$	1.65		$	0.79
Income from discontinued operations	—			—			—			—			0.01
Net income	$	3.28		$	3.15		$	1.28		$	1.65		$	0.80
Net income per average common share outstanding—diluted:
Income from continuing operations	$	3.23		$	3.09		$	1.25		$	1.58		$	0.76
Income from discontinued operations	—			—			—			—			0.01
Net income	$	3.23		$	3.09		$	1.25		$	1.58		$	0.77
Cash dividends declared per common share	$	3.16		$	2.62		$	2.38		$	2.14		$	1.93

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	December 31,
(Amounts in thousands)	2018			2017			2016			2015			2014
Balance Sheet Data:
Cash and cash equivalents(1)	$	44,608		$	77,496		$	137,385		$	99,760		$	73,884
Total assets	2,517,328			2,456,676			2,487,672			2,428,440			2,416,896
Deferred revenue	146,227			142,014			123,955			97,334			71,598
Total long-term debt (excluding current maturities)	2,063,512			2,021,178			1,624,486			1,498,022			1,373,605
Total debt, net	2,106,512			2,021,178			1,653,647			1,505,528			1,379,906
Redeemable noncontrolling interests	525,271			494,431			485,876			435,721			437,545
Stockholders' (deficit) equity	(643,093		)	(505,112		)	(186,490		)	24,216			223,895
	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016			2015			2014
Other Data:
Net cash provided by operating activities	$	413,132		$	445,067		$	463,235		$	473,761		$	392,323
Stock repurchases	(110,990		)	(499,442		)	(211,751		)	(245,114		)	(195,353		)
Payment of cash dividends	(267,044		)	(227,101		)	(220,314		)	(200,957		)	(184,300		)

________________________________

(1) Excludes restricted cash in 2016, 2015 and 2014.

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ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Significant components of the Management's Discussion and Analysis of Financial Condition and Results of Operations section include:

• Overview.  The overview section provides a summary of Six Flags and the principal factors affecting our results of operations.

• Critical Accounting Policies.  The critical accounting policies section provides detail with respect to accounting policies that are considered by management to require significant judgment and use of estimates and that could have a significant impact on our financial statements.

• Recent Events.  The recent events section provides a brief description of recent events occurring in our business.

• Results of Operations.  The results of operations section provides an analysis of our results for the years ended December 31, 2018, 2017 and 2016 and a discussion of items affecting the comparability of our financial statements.

• Liquidity, Capital Commitments and Resources.  The liquidity, capital commitments and resources section provides a discussion of our cash flows for the year ended December 31, 2018 and our outstanding debt and commitments existing as of December 31, 2018.

• Market Risks and Security Analyses.  We are principally exposed to market risk related to interest rates and foreign currency exchange rates, which are described in the market risks and security analyses section.

• Recently Issued Accounting Pronouncements.  This section provides a discussion of recently issued accounting pronouncements applicable to Six Flags, including a discussion of the impact or potential impact of such standards on our financial statements when applicable.

The following discussion and analysis contains forward-looking statements relating to future events or our future financial performance, which involve risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements. Please see the discussion regarding forward-looking statements included under the caption "Cautionary Note Regarding Forward-Looking Statements" and "Item 1A. Risk Factors" for a discussion of some of the uncertainties, risks and assumptions associated with these statements.

The following discussion and analysis presents information that we believe is relevant to an assessment and understanding of our consolidated balance sheets and results of operations. This information should be read in conjunction with the consolidated financial statements and the notes thereto included elsewhere in this Annual Report.

Overview

We are the largest regional theme park operator in the world and the largest operator of waterparks in North America based on the number of parks we operate. Of our 25 regional theme and waterparks, 22 are located in the United States, two parks are located in Mexico and one is located in Montreal, Canada. Our parks are located in geographically diverse markets across North America and generally offer a broad selection of state-of-the-art and traditional thrill rides, water attractions, themed areas, concerts and shows, restaurants, game venues and retail outlets, thereby providing a complete family-oriented entertainment experience. We work continuously to improve our parks and our guests' experiences and to meet our guests' evolving needs and preferences.

Our revenue is derived from (i) the sale of tickets for entrance to our parks (which accounted for approximately 55% of total revenue during the years ended December 31, 2018 and 2017, and 54% of total revenues during the year ended December 31, 2016), (ii) the sale of food and beverages, merchandise, games and attractions, parking and other services inside our parks, (iii) sponsorship, international agreements and accommodations. Revenues from ticket sales and in-park sales are primarily impacted by park attendance. Revenues from sponsorship, international agreements, and accommodations can be impacted by the term, timing and extent of services and fees under these arrangements, which can result in fluctuations from year to year. During 2018, our earnings from park operations excluding the impact of interest, taxes, depreciation, amortization and any other non-cash income or expenditures ("Park EBITDA") improved primarily as a result of revenue growth, partially offset by an increase in cash operating costs. The increase in revenue was primarily driven by a 5% increase in attendance, a 2% increase in total guest spending per capita, which excludes sponsorship, international agreements and accommodations revenue and a 7% increase in sponsorship, international agreements and accommodations revenue.

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Our principal costs of operations include salaries and wages, employee benefits, advertising, third party services, repairs and maintenance, utilities, rent and insurance. A large portion of our expenses is relatively fixed as our costs for full-time employees, maintenance, utilities, rent, advertising and insurance do not vary significantly with attendance.

Critical Accounting Policies

The preparation of financial statements in conformity with accounting principles generally accepted in the United States ("U.S. GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities as of the date of the financial statements and the reported amounts of revenues and expenses earned and incurred during the reporting period. Critical accounting estimates are fundamental to the portrayal of both our financial condition and results of operations and often require difficult, subjective and complex estimates and judgments. We evaluate our estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which we believe to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in these estimates resulting from the continuing changes in the economic environment will be reflected in the financial statements in future periods. The following discussion addresses the items we have identified as our critical accounting estimates and discusses our review of applicable accounting pronouncements that have been issued by the Financial Accounting Standards Board (“FASB”). See Note 2 to the consolidated financial statements included elsewhere in this Annual Report for further discussion of these and other accounting policies.

Valuation of Long-Lived Assets

Goodwill and intangible assets with indefinite useful lives are tested for impairment annually, or more frequently if events or circumstances indicate that the assets may be impaired. We identify our reporting unit and determine the carrying value of the reporting unit by assigning the assets and liabilities, including the existing goodwill and intangible assets, to the reporting unit. We then determine the fair value of the reporting unit and compare it to the carrying amount of the reporting unit. All of our parks are operated in a similar manner and have comparable characteristics in that they produce and distribute similar services and products using similar processes, have similar types of customers, are subject to similar regulations and exhibit similar economic characteristics. As such, we are a single reporting unit. For each year, the fair value of the single reporting unit exceeded our carrying amount (provided that we have one reporting unit at the same level for which our Holdings' common stock is traded, we believe our market capitalization is the best indicator of our reporting unit's fair value). In September 2012, the FASB amended Accounting Standards Update ("ASU") Topic 350, Intangibles - Goodwill and Other, which permits entities to perform a qualitative analysis on indefinite-lived intangible assets to determine if it is more likely than not that the fair value of the intangible asset was less than its carrying amount as a basis for determining whether it was necessary to perform a quantitative impairment test. We adopted this amendment in September 2012 and have performed a qualitative analysis on our indefinite-lived intangible assets during the fourth quarter of each year.

The fair value of indefinite-lived intangible assets is generally determined based on a discounted cash flow analysis. An impairment loss occurs to the extent that the carrying value exceeds the fair value. For goodwill, if the fair value of the reporting unit were to be less than the carrying amount, an impairment loss would be recognized to the extent that the carrying amount of the reporting unit exceeds its fair value.

We review long-lived assets, including finite-lived intangible assets subject to amortization, for impairment upon the occurrence of events or changes in circumstances that would indicate that the carrying value of an asset or groups of assets may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset or group of assets to the future net cash flows expected to be generated by the asset or group of assets. If such assets are not considered to be fully recoverable, any impairment to be recognized is measured by the amount by which the carrying amount of the asset or group of assets exceeds its respective fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.

Accounting for Income Taxes

As part of the process of preparing consolidated financial statements, we are required to estimate our income taxes in each of the jurisdictions in which we operate. This process involves us estimating our actual current tax exposure together with assessing temporary differences resulting from differing treatment of items, such as depreciation periods for our property and equipment and recognition of our deferred revenue, for tax and financial accounting purposes. These differences result in deferred tax assets and liabilities, which are included in our consolidated balance sheets. We must then assess the likelihood that our deferred tax assets (primarily net operating loss carryforwards) will be recovered by way of offset against taxable income. To the extent we believe that recovery is not likely, we must establish a valuation allowance. To the extent we establish a

29

valuation allowance or increase or decrease this allowance in a period, we must reflect such amount as income tax expense or benefit in the consolidated statements of operations.

A high degree of management judgment is required in determining our provision or benefit for income taxes, our deferred tax assets and liabilities and any valuation allowance recorded against our net deferred tax assets. Variables that will impact whether our deferred tax assets will be utilized prior to their expiration include, among other things, attendance, per capita spending and other revenues, foreign taxable income, capital expenditures, levels of debt, interest rates, operating expenses, sales of assets, and changes in state or federal tax laws. In determining the valuation allowance, we do not consider, and under generally accepted accounting principles cannot consider, the possible changes in state or federal tax laws until the laws change. To the extent we reduce capital expenditures, our future accelerated tax deductions for our rides and equipment will be reduced, and our interest expense deductions could correspondingly decrease as cash flows that previously would have been utilized for capital expenditures could be utilized to lower our outstanding debt balances. Increases in capital expenditures without corresponding increases in net revenues would reduce short-term taxable income and increase the likelihood of additional valuation allowances being required as net operating loss carryforwards could expire prior to their utilization. Conversely, increases in revenues in excess of operating expenses would reduce the likelihood of additional valuation allowances being required as the short-term taxable income would increase the utilization of net operating loss carryforwards prior to their expiration. We utilize deferred tax assets related to foreign tax credit attributes through foreign-sourced income as well as the recapture of overall domestic loss amounts re-characterized as domestic-source income. See Note 2 and Note 10 to the consolidated financial statements included elsewhere in this Annual Report for further discussion.

RevenueRecognition

FASB Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers (together with the series of Accounting Standards Updates described in the first paragraph under "Recently Adopted Accounting Pronouncements" below, "Topic 606") is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We recognize revenue upon admission into our parks, provision of our services, or when products are delivered to our guests. Revenue is presented in the accompanying consolidated statements of operations net of sales taxes collected from our guests that are remitted or payable to government taxing authorities. For season passes, memberships in the initial twelve-month term and other multi-use admissions, we estimate a redemption rate based on historical experience and other factors and assumptions we believe to be customary and reasonable and recognize a pro-rata portion of the revenue as the guest attends our parks. In contrast to our season pass and other multi-use offerings (such as our all season dining pass program, which enables season pass holders and members to eat meals and snacks any day they visit the park for one upfront payment) that expire at the end of each operating season, the membership program continues on a month-to-month basis after the initial twelve-month membership term and can be canceled any time after the initial term pursuant to the terms of the membership program. Guests enrolled in the membership program can visit our parks an unlimited number of times anytime the parks are open as long as the guest remains enrolled in the membership program. We review the estimated redemption rate regularly and on an ongoing basis and revise it as necessary throughout the year. Amounts owed or received for multi-use admissions in excess of redemptions are recognized in deferred revenue. For active memberships after the initial twelve-month term, we recognize revenue monthly as payments are received.

We have entered into international agreements to assist third parties in the planning, design, development and operation of Six Flags-branded parks outside of North America. These agreements typically consist of a brand licensing agreement, project services agreement, and management services agreement. Under Topic 606, we treat these agreements as one contract because they were negotiated with a single commercial objective. We have identified three distinct promises within the agreement with each third-party partner as brand licensing, project services and management services. Each of these promises is its own performance obligation and distinct as the third party could benefit from each service on its own with other readily available resources and each service is separately identifiable from other services in the context of the contract. We recognize revenue under our international agreements over the relevant service period of each performance obligation based on its relative stand-alone selling price, as determined by our best estimate of selling price. We review the service period of each performance obligation on an ongoing basis and revise it as necessary throughout the year. Revisions to the relevant service periods of the performance obligations may result in revisions to revenue in future periods and are recognized in the period in which the change is identified. On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under FASB ASC 605, Revenue Recognition ("Topic 605"). See Note 3 to the consolidated financial statements included elsewhere in this Annual Report for additional information.

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Recent Events

On February 20, 2018, we announced a new initiative in connection with Jones Lang LaSalle, Inc., a global professional services firm that specializes in real estate and investment management, to power two more of our parks – Six Flags Discovery Kingdom in Vallejo, California and Six Flags Magic Mountain, near Los Angeles, California – almost entirely with solar power. A renewable energy independent power producer will build, own and operate the renewable energy systems in California. Separately, in September 2018, construction of a solar energy project began at Six Flags Great Adventure in Jackson, New Jersey.

On March 26, 2018, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.00% to LIBOR plus 1.75%. Excluding the cost to execute the transaction, the lower borrowing rate will save the Company approximately $1.4 million annually in interest costs.

On April 4, 2018, we announced plans with Saudi Arabia’s Public Investment Fund to develop a Six Flags-branded theme park in the city of Riyadh.

On April 18, 2018, we completed an upsize to our Amended and Restated Term Loan B. The upsize increased our Amended and Restated Term Loan B borrowings by $39.0 million. The proceeds of the additional borrowing will be used for general corporate purposes, including share repurchases.

On April 24, 2018, we, along with our partner in China, Riverside Investment Group, announced an international agreement to develop three Six Flags-branded parks in Nanjing, China, which will be the partner’s third park complex. On May 29, 2018, we also announced the addition of Six Flags Kids World as the fourth park in the Nanjing entertainment complex. The new government leadership in Nanjing is re-evaluating its development plans and the estimated opening dates of these parks cannot be confirmed at this time.

On May 22, 2018, we entered into an asset purchase agreement with Premier Parks, LLC and its affiliates to acquire the lease rights to operate five parks owned by EPR Properties, LLC. We completed the transaction on June 1, 2018. The parks were previously operated by Premier Parks, LLC of Oklahoma City and its affiliates. Our five new parks include Six Flags Hurricane Harbor Splashtown in Houston, Texas, Six Flags Hurricane Harbor Phoenix in Glendale, Arizona, Six Flags Darien Lake near Buffalo, New York, and Frontier City and White Water Bay in Oklahoma City, Oklahoma.

In September 2018, Six Flags Over Texas and Hurricane Harbor sustained damage from severe flooding in the area. We have filed property insurance claims, including business interruption, with our insurers. We expect to recover the full amount of the damage less the deductible.

On October 9, 2018, we entered into a lease agreement with the Rockford Park District that will allow Six Flags to operate Magic Waters, a 43-acre waterpark in Rockford, Illinois. We expect the lease to commence in the spring of 2019.

On February 6, 2019, we announced that Holdings' Board of Directors declared a first quarter cash dividend of $0.82 per share of common stock payable March 4, 2019 to stockholders of record as of February 18, 2019.

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Results of Operations

The following table sets forth summary financial information for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,									Percentage Changes
(Amounts in thousands, except percentage and per capita data)	2018			2017			2016			2018 vs 2017		2017 vs 2016
Total revenue	$	1,463,707		$	1,359,074		$	1,319,398		8	%	3	%
Operating expenses	574,724			511,873			490,116			12	%	4	%
Selling, general and administrative expenses	132,168			159,070			293,005			(17	)%	(46	)%
Cost of products sold	121,803			110,374			109,579			10	%	1	%
Other net periodic pension benefit	(5,169		)	(3,322		)	(1,920		)	56	%	73	%
Depreciation and amortization	115,693			111,671			106,893			4	%	4	%
Loss on disposal of assets	1,879			3,959			1,968			(53	)%	N/M
Interest expense, net	107,243			99,010			81,872			8	%	21	%
Loss on debt extinguishment	—			37,116			2,935			N/M		N/M
Other expense, net	3,508			271			1,684			N/M		(84	)%
Income before income taxes	411,858			329,052			233,266			25	%	41	%
Income tax expense	95,855			16,026			76,539			N/M		(79	)%
Net income	316,003			313,026			156,727			1	%	100	%
Less: Net income attributable to noncontrolling interests	(40,007		)	(39,210		)	(38,425		)	2	%	2	%
Net income attributable to Six Flags Entertainment Corporation	$	275,996		$	273,816		$	118,302		1	%	131	%
Other Data:
Attendance	32,024			30,421			30,108			5	%	1	%
Total revenue per capita	$	45.71		$	44.68		$	43.82		2	%	2	%

Year Ended December 31, 2018 vs. Year Ended December 31, 2017

Revenue

Revenue for the year ended December 31, 2018, totaled $1,463.7 million, an 8% increase compared to $1,359.1 million for the year ended December 31, 2017. The increase in revenue was primarily attributable to (i) a 5% increase in attendance primarily driven by our five new parks acquired on June 1, 2018, the benefit of 365-day operations at Six Flags Magic Mountain, strong growth in Mexico and growth at our waterparks, and growth in our Fright Fest^® and Holiday in the Park^® events (ii) a $0.97, or 2%, increase in guest spending per capita, which excludes sponsorship, international agreements and accommodations revenue, and (iii) a $6.9 million, or 7%, increase in sponsorship, international agreements and accommodations revenue.

Admissions revenue per capita increased $0.93, or 4%, during the year ended December 31, 2018, relative to the year ended December 31, 2017. The increase in admissions revenue per capita was primarily driven by continued pricing improvements related to all tickets, coupled with an increase in premium membership sales, partially offset by the lower admissions revenue per capita at our five new parks. Non-admissions revenue per capita increased $0.04, or less than one percent, during the year ended December 31, 2018, relative to the year ended December 31, 2017. The increase in non-admissions revenue per capita was primarily the result of higher in-park spending driven by members and sales of all season dining passes, partially offset by lower in-park spending per capita at our five new parks.

Operating expenses

Operating expenses for the year ended December 31, 2018, increased $62.9 million, or 12%, relative to the year ended December 31, 2017, primarily as a result of (i) increases in operating costs, including lease expense, for our five new parks, (ii) Six Flags Magic Mountain moving to a 365-day operating calendar, (iii) a full-year of operations of our newly added waterparks in Concord, California and Oaxtepec, Mexico, which we began operating in 2017, (iv) increased costs from statutory minimum wage rate increases and competitive market rate increases at many of our parks, and (v) an increase in expenses related to the expansion of our Holiday in the Park^® event to Flags Great America.

Selling, general and administrative expenses

Selling, general and administrative expenses for the year ended December 31, 2018, decreased $26.9 million, or 17%, compared to the year ended December 31, 2017, primarily as a result of a net decrease in stock-based compensation expense

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resulting from a reversal of all stock-based compensation relating to the 2017 Performance Award during the year ended December 31, 2018, as late achievement of the 2017 Performance Award did not occur. This reduction was partially offset by an increase in advertising costs related to our five new parks.

Cost of products sold

Cost of products sold for the year ended December 31, 2018, increased $11.4 million, or 10%, compared to the year ended December 31, 2017, primarily as a result of increased food and merchandise sales. Cost of products sold as a percentage of non-admission revenue for the years ended December 31, 2018, increased slightly as compared to the year ended December 31, 2017.

Depreciation and amortization expense

Depreciation and amortization expense for the year ended December 31, 2018, increased $4.0 million, or 4%, compared to the year ended December 31, 2017. The increase in depreciation and amortization expense is primarily the result of new asset additions related to our ongoing capital investments, partially offset by asset retirements.

Loss on disposal of assets

Loss on disposal of assets decreased by $2.1 million, or 53%, for the year ended December 31, 2018, relative to the year ended December 31, 2017, primarily as a result of a gain recognized from the insurance proceeds received for the assets damaged in the flood at Six Flags Over Texas. These proceeds were used to replace damaged assets and will increase depreciation expense in future years.

Interest expense, net

Interest expense, net increased $8.2 million, or 8%, for the year ended December 31, 2018, relative to the year ended December 31, 2017, primarily as a result of the incremental interest incurred on a higher debt balance resulting from the issuance of the 2024 Notes Add-on and the 2027 Notes, the $39.0 million upsize to the Amended and Restated Term Loan B, and higher levels of borrowing under the Amended and Restated Revolving Loan.

Loss on debt extinguishment

On April 13, 2017, we issued the 2024 Notes Add-on and the 2027 Notes. A portion of the net proceeds from the issuance of these notes was used to redeem all of the outstanding 2021 Notes and to satisfy and discharge the indenture governing the 2021 Notes. In connection with the extinguishment of the 2021 Notes, we recognized a loss on debt extinguishment of $36.9 million for the year ended December 31, 2017.

On June 21, 2017, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points. In conjunction with this amendment, we recognized a loss on debt extinguishment of $0.2 million for the year ended December 31, 2017.

See Note 7 to the consolidated financial statements included elsewhere in this Annual Report for further discussion.

Income tax expense

Income tax expense was $95.9 million for the year ended December 31, 2018, compared to $16.0 million for the year ended December 31, 2017. The increase in income tax expense is the result of the passage of the Tax Cuts and Jobs Act (H.R. 1) (the "Tax Act") on December 22, 2017. The Tax Act reduced the corporate tax rate from 35% to 21%, resulting in an $84.6 million benefit due to remeasurement of our deferred tax balances in 2017.

See Note 10 to the consolidated financial statements included elsewhere in this Annual Report for further discussion.

Year Ended December 31, 2017 vs. Year Ended December 31, 2016

Revenue

Revenue for the year ended December 31, 2017 totaled $1,359.1 million, a 3% increase compared to $1,319.4 million for the year ended December 31, 2016. The increase in revenue was primarily attributable to a 1% increase in attendance driven by strong season pass and membership sales, and by an $0.86, or 2%, increase in total revenue per capita, calculated as a total revenue divided by total attendance. Per capita guest spending, which excludes sponsorship, international agreements and accommodations revenue, increased by $0.54, or 1%, to $41.61 during the year ended December 31, 2017 from $41.07 during

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the year ended December 31, 2016, primarily as a result of ticket price gains, partially offset by lower in-park spending per capita due to a higher mix of season pass holder and member attendance, which lowers per capita guest spending but increases overall guest spending over the course of the operating season.

Admissions revenue per capita increased $0.61, or 3%, during the year ended December 31, 2017 relative to the year ended December 31, 2016. The increase in admissions revenue per capita was primarily driven by modest price increases on all ticket types and membership revenue from active memberships past the initial twelve-month term, during which time members continue to pay their membership fees on a month-to-month basis, partially offset by the higher mix of season pass holder and member attendance. Non-admissions revenue per capita decreased $0.07, or less than 1%, during the year ended December 31, 2017 relative to the year ended December 31, 2016. The decrease in non-admissions per capita guest spending was driven by the higher percentage of season pass holder and member attendance, partially offset by the continued success of our all-season dining pass.

Operating expenses

Operating expenses for the year ended December 31, 2017 increased $21.8 million, or 4%, relative to the year ended December 31, 2016, primarily as a result of increases in statutory and market-based wage rate increases, an increase in seasonal labor resulting from the expansion of our Holiday in the Park® event at Six Flags New England, increases in rent and utility costs related to the operations of our new waterparks in Oaxtepec, Mexico and Concord, California, as well as an increase in credit card processing fees, operating supplies and other services related to the growth in attendance and revenue.

Selling, general and administrative expenses

Selling, general and administrative expenses for the year ended December 31, 2017 decreased $133.9 million, or 46%, compared to the year ended December 31, 2016, primarily as a result of a net decrease in stock-based compensation expense resulting from the 2017 Performance Award, for which we reduced incentive-based stock expense during the year ended December 31, 2017 as late achievement of the 2017 Performance Award was not deemed probable to occur until 2018. This reduction was partially offset by increased costs related to insurance, legal and other professional services.

Cost of products sold

Cost of products sold for the year ended December 31, 2017 increased $0.8 million, or 1%, compared to the year ended December 31, 2016. Cost of products sold as a percentage of non-admission revenue for the years ended December 31, 2017 and 2016 was comparable for both periods.

Depreciation and amortization expense

Depreciation and amortization expense for the year ended December 31, 2017 increased $4.8 million, or 4%, compared to the year ended December 31, 2016. The increase in depreciation and amortization expense was primarily due to asset additions made in conjunction with our ongoing capital program.

Loss on disposal of assets

Loss on disposal of assets increased by $2.0 million, or 101%, for the year ended December 31, 2017 relative to the year ended December 31, 2016, primarily as a result of the disposal of more assets during 2017 in conjunction with our ongoing capital program relative to the comparable period in 2016 as well as a gain recognized on the sale of underutilized assets in the prior year.

Interest expense, net

Interest expense, net increased $17.1 million, or 21%, for the year ended December 31, 2017 relative to the year ended December 31, 2016 as a result of the incremental interest incurred on a higher debt balance resulting from the issuance of the 2024 Notes Add-on and the 2027 Notes.

Loss on debt extinguishment

On April 13, 2017, Holdings issued $700.0 million of 4.875% senior unsecured notes due 2024, and $500.0 million of 5.50% senior unsecured notes due 2027. We used a portion of the proceeds from the issuance of the notes to redeem all of the outstanding 2021 Notes and to satisfy and discharge the indenture governing the 2021 Notes. In connection with the

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extinguishment of the 2021 Notes, we recognized a loss on debt extinguishment of $36.9 million for the year ended December 31, 2017.

On June 21, 2017, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points. In conjunction with this amendment, we recognized a loss on debt extinguishment of $0.2 million for the year ended December 31, 2017.

On September 29, 2017, we repaid all amounts outstanding under the Refinance Loan (as defined in Note 7 to the consolidated financial statements included elsewhere in this Annual Report). In connection with the repayment of the Refinance Loan, we recognized a nominal amount as loss on debt extinguishment for the year ended December 31, 2017.

See Note 7 to the consolidated financial statements included elsewhere in this Annual Report for further discussion.

Income tax expense

Income tax expense was $16.0 million for the year ended December 31, 2017, compared to $76.5 million for the year ended December 31, 2016. The decrease in income tax expense is the result of the passage of the Tax Cuts and Jobs Act (H.R. 1) ("the Act") on December 22, 2017, which reduced the corporate tax rate from 35% to 21%, resulting in a remeasurement of our deferred tax balances.

See Note 10 to the consolidated financial statements included elsewhere in this Annual Report for further discussion.

Liquidity, Capital Commitments and Resources

General

Our principal sources of liquidity are cash generated from operations, funds from borrowings and existing cash on hand. Our principal uses of cash include the funding of working capital obligations, debt service, investments in parks (including capital projects), common stock dividends, payments to our partners in the Partnership Parks and common stock repurchases.

During the years ended December 31, 2018, 2017 and 2016, Holdings paid $267.0 million, $227.1 million and $220.3 million, respectively, in cash dividends on its common stock. One of our fundamental business goals is to generate superior returns for our stockholders over the long term. As part of our strategy to achieve this goal, we have declared and paid quarterly cash dividends each quarter beginning with the fourth quarter of 2010. Holdings' Board of Directors has since increased the quarterly cash dividend multiple times and in November 2018, Holdings' Board of Directors declared another increase in our ongoing quarterly cash dividend from $0.78 per share of common stock to $0.82 per share of common stock. Additionally, in February 2019, Holdings' Board of Directors declared a quarterly cash dividend of $0.82 per share of common stock. The amount and timing of any future dividends payable on Holdings' common stock are within the sole discretion of Holdings' Board of Directors. Based on (i) our current number of shares outstanding and (ii) estimates of share repurchases, restricted stock vesting and option exercises, we currently anticipate paying approximately $280 million in total cash dividends on our common stock during the 2019 calendar year.

On June 7, 2016, Holdings announced that its Board of Directors approved a new stock repurchase program that permitted Holdings to repurchase an incremental $500.0 million in shares of Holdings' common stock (the "June 2016 Stock Repurchase Plan"). Holdings fully utilized the availability under the June 2016 Stock Repurchase Plan by May 2017. Throughout the program, Holdings repurchased 8,392,000 shares at a cumulative cost of approximately $500.0 million and an average price per share of $59.58.

On March 30, 2017, Holdings announced that its Board of Directors approved a new stock repurchase plan that permits Holdings to repurchase an incremental $500.0 million in shares of Holdings' common stock (the "March 2017 Stock Repurchase Plan"). As of February 14, 2019, Holdings had repurchased 4,603,000 shares at a cumulative cost of approximately $268.2 million and an average price per share of $58.27 under the March 2017 Stock Repurchase Plan, leaving approximately $231.8 million available for permitted repurchases.

The repurchase of common stock and the payment of cash dividends are reflected as a reduction of stockholders' equity.

On June 30, 2015, we entered into the Amended and Restated Credit Facility, which is comprised of the $250.0 million Amended and Restated Revolving Loan and the $700.0 million Amended and Restated Term Loan B. In connection with entering into the Amended and Restated Credit Facility, we repaid the outstanding Term Loan B. The remaining proceeds from the Amended and Restated Credit Facility were primarily used for share repurchases.

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On June 16, 2016, Holdings issued $300.0 million of 4.875% senior unsecured notes due July 31, 2024. We used $150.0 million of the proceeds from the issuance of the 2024 Notes to reduce our borrowings under the Amended and Restated Term Loan B. The remaining net proceeds were used for general corporate and working capital purposes, which primarily included repurchases of our common stock.

Also on June 16, 2016, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.75% to LIBOR plus 2.50%. In addition to the rate reduction, the $150.0 million prepayment made with proceeds from the 2024 Notes discussed above eliminated all future quarterly amortization payments on the Amended and Restated Term Loan B until maturity in 2022.

On December 20, 2016, we entered into an amendment to the Amended and Restated Credit Facility that further reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.50% to LIBOR plus 2.25%, with the elimination of the minimum LIBOR rate requirement.

On April 13, 2017, we issued the 2024 Notes Add-on and the 2027 Notes. A portion of the net proceeds from the issuance of these notes was used to redeem all of the outstanding 2021 Notes and to satisfy and discharge the indenture governing the 2021 Notes, including to pay accrued and unpaid interest to the redemption date and the related redemption premium on the 2021 Notes, and to pay related fees and expenses.

On June 21, 2017, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.25% to LIBOR plus 2.00%.

On March 26, 2018, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.00% to LIBOR plus 1.75%. We capitalized $0.5 million of debt issuance costs directly associated with the issuance of this amendment.

On April 18, 2018, we entered into an amendment to the Amended and Restated Credit Facility that increased our Amended and Restated Term Loan B borrowings by $39.0 million. We capitalized $0.3 million of debt issuance costs directly associated with the issuance of this amendment. The proceeds of the additional borrowings were used for general corporate purposes, including repurchases of our common stock.

Based on historical and anticipated operating results, we believe cash flows from operations, available cash and amounts available under the Amended and Restated Credit Facility will be adequate to meet our liquidity needs, including any anticipated requirements for working capital, capital expenditures, common stock dividends, scheduled debt service, obligations under arrangements relating to the Partnership Parks and discretionary common stock repurchases. Additionally, we expect to be able to use our current federal net operating loss carryforwards to reduce our federal income tax liability until 2024. For the years 2018 through 2024, we have significant federal net operating loss carryforwards subject to an annual limitation that we expect will offset approximately $32.5 million of taxable income per year. We became a federal tax payer in 2018.

Our current and future liquidity is greatly dependent upon our operating results, which are driven largely by overall economic conditions as well as the price and perceived quality of the entertainment experience at our parks. Our liquidity could also be adversely affected by a disruption in the availability of credit as well as unfavorable weather; natural disasters; contagious diseases, such as Ebola, Zika, or swine or avian flu; accidents or the occurrence of an event or condition at our parks, including terrorist acts or threats inside or outside of our parks; negative publicity; or significant local competitive events, which could significantly reduce paid attendance and revenue related to that attendance at any of our parks. While we work with local police authorities on security-related precautions to prevent certain types of disturbances, we can make no assurance that these precautions will be able to prevent these types of occurrences. However, we believe our ownership of many parks in different geographic locations reduces the effects of adverse weather and these other types of occurrences on our consolidated results. If such an adverse event were to occur, we may be unable to borrow under the Amended and Restated Revolving Loan or may be required to repay amounts outstanding under the Amended and Restated Credit Facility and/or may need to seek additional financing. In addition, we expect we may be required to refinance all or a significant portion of our existing debt on or prior to maturity, requiring us to potentially seek additional financing. The degree to which we are leveraged could adversely affect our ability to obtain any additional financing. See "Cautionary Note Regarding Forward-Looking Statements" and "Item 1A. Risk Factors" included elsewhere in this Annual Report.

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As of December 31, 2018, our total indebtedness, net of discount and deferred financing costs, was $2,106.5 million which included $988.6 million of the 2024 Notes, $497.8 million of the 2027 Notes, and $620.1 million outstanding under the Amended and Restated Credit Facility. Based on (i) non-revolving credit debt outstanding on that date, (ii) anticipated levels of working capital revolving borrowings during 2019 and 2020, (iii) estimated interest rates for floating-rate debt and (iv) the 2024 Notes and the 2027 Notes, we anticipate annual cash interest payments of approximately $105 million and $110 million during 2019 and 2020, respectively. Under the Amended and Restated Credit Facility, all remaining outstanding principal of the Amended and Restated Term Loan B is due and payable on June 30, 2022.

As of December 31, 2018, we had approximately $44.6 million unrestricted cash and $188.9 million available for borrowing under the Amended and Restated Revolving Loan. Our ability to borrow under the Amended and Restated Revolving Loan is dependent upon compliance with certain conditions, including a maximum senior leverage maintenance covenant, a minimum interest coverage covenant and the absence of any material adverse change in our business or financial condition. If we were to become unable to borrow under the Amended and Restated Revolving Loan, and we failed to meet our projected results from operations significantly, we might be unable to pay in full our off-season obligations. A default under the Amended and Restated Revolving Loan could permit the lenders under the Amended and Restated Credit Facility to accelerate the obligations thereunder. The Amended and Restated Revolving Loan expires on June 30, 2020. The terms and availability of the Amended and Restated Credit Facility and other indebtedness are not affected by changes in the ratings issued by rating agencies in respect of our indebtedness. For a more detailed description of our indebtedness, see Note 7 to the consolidated financial statements included elsewhere in this Annual Report.

We currently plan on spending approximately 9% of annual revenues on capital expenditures during the 2019 calendar year.

During the year ended December 31, 2018, net cash provided by operating activities was $413.1 million. Net cash used in investing activities during the year ended December 31, 2018 was $152.1 million, consisting primarily of capital expenditures, net of insurance proceeds, and the purchase of five new parks on June 1, 2018, partially offset by proceeds received from the disposal of assets. Net cash used in financing activities during the year ended December 31, 2018 was $293.5 million, primarily attributable to the payment of cash dividends, stock repurchases, distributions to our noncontrolling interests and the payment of debt issuance costs in connection with the amendment to the Amended and Restated Credit Facility on March 26, 2018. These uses of cash were partially offset by proceeds from the exercise of stock options, the proceeds from borrowings under our Amended and Restated Revolving Loan and the upsize to our Amended and Restated Term Loan B.

Since our business is both seasonal in nature and involves significant levels of cash transactions, our net operating cash flows are largely driven by attendance and per capita spending levels because most of our cash-based expenses are relatively fixed and do not vary significantly with either attendance or per capita spending. These cash-based operating expenses include salaries and wages, employee benefits, advertising, third party services, repairs and maintenance, utilities and insurance.

Partnership Park Obligations

We guarantee certain obligations relating to the Partnership Parks. These obligations include (i) minimum annual distributions (including rent) of approximately $72.5 million in 2019 (subject to cost of living adjustments in subsequent years) to the limited partners in the Partnerships Parks (based on our ownership of units as of December 31, 2018, our share of the distribution will be approximately $31.7 million), (ii) minimum capital expenditures at each of the Partnership Parks during rolling five-year periods, based generally on 6% of the Partnership Park's revenues, (iii) an annual offer to purchase all outstanding limited partnership units at the Specified Price to the extent tendered by the unit holders, which annual offer must remain open from March 31 through late April of each year, and any limited partnership interest tendered during such time period must be fully paid for no later than May 15th of that year, (iv) making annual ground lease payments, and (v) either (a) purchasing all of the outstanding limited partnership interests in the Partnership Parks through the exercise of a call option upon the earlier of the occurrence of certain specified events and the end of the term of the partnerships that hold the Partnership Parks in 2027 (in the case of Georgia) and 2028 (in the case of Texas), or (b) causing each of the partnerships that hold the Partnership Parks to have no indebtedness and to meet certain other financial tests as of the end of the term of such partnership. See Note 14 to the consolidated financial statements included elsewhere in this Annual Report for additional information.

After payment of the minimum distribution, we are entitled to a management fee equal to 3% of prior year gross revenues and, thereafter, any additional cash will be distributed first to management fee in arrears, repayment of any interest and principal on intercompany loans with any additional cash being distributed 95% to us, in the case of SFOG, and 92.5% to us, in the case of SFOT.

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Off-Balance Sheet Arrangements

We had no off-balance sheet arrangements as of December 31, 2018.

Contractual Obligations

Set forth below is certain information regarding our debt, lease and purchase obligations as of December 31, 2018:

	Payment Due by Period
(Amounts in thousands)	2019		2020 - 2021		2022 - 2023		2024 and beyond		Total
Long term debt — including current portion (1)	$	—	43,000		583,750		$	1,500,000	$	2,126,750
Interest on long-term debt (2)	105,028		204,213		189,802		145,000		644,043
Real estate and operating leases (3)	23,936		45,650		43,189		314,799		427,574
Purchase obligations (4)	175,998		9,000		9,000		4,500		198,498
Total	$	304,962	$	301,863	$	825,741	$	1,964,299	$	3,396,865

________________________________________

(1) Payments are shown at principal amount. See Note 7 to the consolidated financial statements included elsewhere in this Annual Report for further discussion on long-term debt.

(2) See Note 7 to the consolidated financial statements included elsewhere in this Annual Report for further discussion on long-term debt. Amounts shown reflect variable interest rates in effect at December 31, 2018.

(3) Assumes future payments at 2018 revenue levels for lease payments based on a percentage of revenues. Also, does not give effect to cost of living adjustments. Obligations not denominated in U.S. Dollars have been converted based on the exchange rates existing on December 31, 2018.

(4) Represents obligations as of December 31, 2018 with respect to insurance, inventory, media and advertising commitments, computer systems and hardware, estimated annual license fees to Warner Bros. (through 2022) and new rides and attractions. Of the amount shown for 2019, approximately $103.1 million represents capital items. The amounts in respect of new rides and attractions were computed as of December 31, 2018 and include estimates by us of costs needed to complete such improvements that, in certain cases, were not legally committed at that date. Amounts shown do not include obligations to employees that cannot be quantified as of December 31, 2018, which are discussed below. Amounts shown also do not include purchase obligations existing at the individual park-level for supplies and other miscellaneous items, none of which are individually material.

Other Obligations

During each of the years ended December 31, 2018, 2017 and 2016, we made contributions to our defined benefit pension plan of $6.0 million. To control increases in costs, our pension plan was "frozen" effective March 31, 2006, pursuant to which most participants (excluding certain union employees whose benefits have subsequently been frozen) no longer continued to earn future pension benefits. Effective February 16, 2009, the remaining participants in the pension plan no longer earned future benefits. See Note 12 to the consolidated financial statements included elsewhere in this Annual Report for more information on our pension benefit plan.

We expect to make contributions of approximately $6.0 million in 2019 to our pension plan based on the 2018 actuarial valuation. We plan to make a contribution to our 401(k) Plan in 2019, and our estimated expense for employee health insurance for 2019 is $19 million.

The vast majority of our capital expenditures in 2019 and beyond are expected to be made on a discretionary basis. We intend to spend approximately 9% of annual revenues on capital expenditures during the 2019 calendar year.

We maintain insurance of the type and in amounts that we believe is commercially reasonable and that is available to businesses in our industry. See "Insurance" under "Item 1. Business." Our insurance premiums and self-insurance retention levels have remained relatively constant during the three-year period ended December 31, 2018. We cannot predict the level of the premiums that we may be required to pay for subsequent insurance coverage, the level of any self-insurance retention applicable thereto, the level of aggregate coverage available or the availability of coverage for specific risks.

We are party to various legal actions arising in the normal course of business. See "Legal Proceedings" and Note 14 to the consolidated financial statements included elsewhere in this Annual Report for information on certain significant litigation.

We may from time to time seek to retire our outstanding debt through cash purchases and/or exchanges for equity securities, in open market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, will depend on the prevailing market conditions, our liquidity requirements, contractual restrictions and other factors. The amounts involved may be material.

Market Risks and Sensitivity Analyses

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We are exposed to market risks relating to fluctuations in interest rates and currency exchange rates. The objective of our financial risk management is to minimize the negative impact of interest rate and foreign currency exchange rate fluctuations on our operations, cash flows and equity. We do not acquire market risk sensitive instruments for trading purposes.

In April 2014, we entered into three separate interest rate swap agreements (collectively, the "Interest Rate Swap Agreements") that we designated and documented as cash flow hedges. We entered into the Interest Rate Swap Agreements with a notional amount of $200.0 million to mitigate the risk of an increase in the LIBOR interest rate above the 0.75% minimum LIBOR rate in effect on the Term Loan B.

On March 31, 2017, the Interest Rate Swap Agreements were de-designated due to a change in the forecasted borrowings. The Interest Rate Swap Agreements continued to serve as economic hedges and provided protection against rising interest rates for the Amended and Restated Term Loan B (as defined in Note 7 to the consolidated financial statements included elsewhere in this Annual Report) during the year ended December 31, 2017. Subsequent to the de-designation, the amounts recorded in accumulated other comprehensive loss were amortized into earnings through the original December 2017 maturity date. As of December 31, 2017, the Interest Rate Swap Agreements expired and all related amounts previously held as derivative assets and liabilities on our consolidated balance sheets and previously recorded in accumulated other comprehensive income ("AOCI") were realized in earnings.

The following is an analysis of the sensitivity of the market value, operations and cash flows of our market-risk financial instruments to hypothetical changes in interest rates as if these changes occurred as of December 31, 2018. The range of potential change in the market chosen for this analysis reflects our view of changes that are reasonably possible over a one-year period. Market values are the present values of projected future cash flows based on the interest rate assumptions. These forward-looking disclosures are selective in nature and only address the potential impacts from financial instruments. They do not include other potential effects which could impact our business as a result of these changes in interest and foreign currency exchange rates.

As of December 31, 2018, we had total debt of $2,106.5 million, of which $1,486.4 million represents fixed-rate debt. The remaining $620.1 million balance represents floating-rate debt. For fixed-rate debt, interest rate changes affect the fair market value but do not impact book value, operations or cash flows. Conversely, for floating-rate debt, interest rate changes generally do not affect the fair market value but do impact future operations and cash flows, assuming other factors remain constant.

Assuming other variables remain constant (such as foreign exchange rates and debt levels), the pre-tax operating and cash flow impact resulting from a one percentage point increase in interest rates would be approximately $6.2 million. See Note 7 to the consolidated financial statements included elsewhere in this Annual Report for information on interest rates under our debt agreements.

Recently Issued Accounting Pronouncements

In May 2016, FASB issued ASU No. 2016-02, Leases, ("Topic 842"), which requires a lessee to recognize assets and liabilities for leases with lease terms of more than 12 months. The recognition, measurement and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance (formerly capital) or operating lease. However, unlike current GAAP, which requires only capital leases to be recognized on the balance sheet, ASU 2016-02 will require all leases with an initial term greater than one year to be recognized on the balance sheet as a right-of-use asset and a lease liability. ASU 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is allowed. The standard provides for a transition method using a modified retrospective approach, which includes a number of optional practical expedients. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842) Targeted Improvements, which allows lessees to recognize and measure leases at the beginning of the period of adoption without modifying the comparative period financial statements.

The Company adopted ASU 2016-02 as of January 1, 2019 using the modified retrospective method as of the period of adoption. The Company has elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows the Company to carryforward the historical lease classification. The Company has made an accounting policy election to keep leases with an initial term of 12 months or less off the balance sheet. The Company will recognize those lease payments in the consolidated statements of operations on a straight-line basis over the lease term. Related to adoption of the new standard, the Company has implemented internal controls and a lease accounting technology system to enable the preparation of financial statements.

The Company currently expects the most significant impact will be the recognition of ROU assets and lease liabilities for operating leases with original terms of over one year where the Company is the lessee. The Company estimates adoption of the

39

new lease standard will result in recognition of ROU assets and lease liabilities of between $200 million and $230 million, as of January 1, 2019. The Company does not expect a material impact on its consolidated statements of operations. The standard will not impact our debt covenant compliance under our current agreements.

In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments ("ASU 2016-15"). The amendments in ASU 2016-15 address eight classification issues related to the statement of cash flows:

• debt prepayment or debt extinguishment costs;

• settlement of zero-coupon bonds;

• contingent consideration payments made after a business combination;

• proceeds from the settlement of insurance claims;

• proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies;

• distributions received from equity method investees;

• beneficial interests in securitization transactions; and

• separately identifiable cash flows and application of the predominance principle.

On January 1, 2018, we adopted ASU 2016-15 using a retrospective transition method to each period presented. The adoption of this pronouncement did not result in a material impact to the presentation of our consolidated statement of cash flows.

In February 2018, the FASB issued Accounting Standards Update No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02"). The amendments in ASU 2018-02 allow entities to reclassify from "Accumulated other comprehensive income" ("AOCI") to retained earnings "stranded" tax effects resulting from passage of the Tax Act. An entity that elects to reclassify these amounts must reclassify stranded tax effects related to the change in federal tax rate for all items accounted for in other comprehensive income (e.g., employee benefits and cumulative translation adjustments). Entities may also elect to reclassify other stranded tax effects that relate to the Tax Act but do not directly relate to the change in the federal tax rate (e.g., state taxes). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance requiring the effect of a change in tax laws or rates to be included in income from operations is not affected. Upon adoption of ASU 2018-02, entities are required to disclose their policy for releasing the income tax effects from AOCI. ASU 2018-02 is effective for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The amendments in ASU 2018-02 may be applied retrospectively to each period in which the effect of the Tax Act is recognized or an entity may elect to apply the amendments in the period of adoption. On January 1, 2018, we elected to early adopt ASU 2018-02, and applied the amendments in the period of adoption. As a result, we reclassified $9.4 million of "stranded" tax effects of the Tax Act from "Accumulated other comprehensive loss" to "Accumulated deficit" as of January 1, 2018.

In March 2017, the FASB issued Accounting Standards Update No. 2017-07, Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost ("ASU 2017-07"). The amendments in ASU 2017-07 require that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The amendments in ASU 2017-07 also require that an employer disaggregate the service cost component from the other components of net benefit cost. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The amendments in ASU 2017-07 should be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic post-retirement benefit cost in the condensed consolidated statements of operations. On January 1, 2018, we adopted ASU 2017-07 using a retrospective transition method to each period presented. Accordingly, the service cost component of net periodic pension cost allocated to our park employees and corporate employees was included within "Operating expenses" and "Selling, general and administrative expenses," respectively, while the other cost components were included in "Other net periodic pension benefit" in the condensed consolidated statements of operations.

Certain prior year amounts in the consolidated statements of operations were reclassified to conform to current year presentation in connection with the adoption of ASU 2017-07. For the years ended December 31, 2017 and 2016, the Company reclassified $2.7 million and $0.7 million, respectively, from "Operating expenses" to "Other net periodic pension benefit." This amount represents the non-service cost component of net periodic pension costs allocable to our park level employees. For the years ended December 31, 2017 and 2016, the Company reclassified $0.6 million and $1.2 million, respectively, from "Selling, general and administrative expenses" to "Other net periodic pension benefit". This amount represents the non-service

40

cost component of net periodic pension costs allocable to our corporate employees. A nominal amount of non-service cost components remains in "Other expense, net" and was not reclassified to "Other net periodic pension benefit." These amounts directly relate to certain other parks that we no longer operate but continue to service pension benefits for former employees of those parks.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The information set forth under "Management's Discussion and Analysis of Financial Condition and Results of Operations — Market Risks and Sensitivity Analyses" of this Annual Report is incorporated by reference into this Item 7A.

41

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

SIX FLAGS ENTERTAINMENT CORPORATION

Index to Consolidated Financial Statements

Management's Report on Internal Control Over Financial Reporting	43
Report of Independent Registered Public Accounting Firm	44
Consolidated Balance Sheets as of December 31, 2018 and 2017	46
Consolidated Statements of Operations for the Years Ended December 31, 2018, 2017 and 2016	47
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2018, 2017 and 2016	48
Consolidated Statements of Equity (Deficit) for the Years Ended December 31, 2018, 2017 and 2016	49
Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016	50
Notes to Consolidated Financial Statements	51

42

Management's Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f). Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on our evaluation under the framework in Internal Control—Integrated Framework (2013), our management concluded that our internal control over financial reporting was effective as of December 31, 2018.

We acquired five new parks during 2018 through an asset purchase agreement. These parks were excluded from our assessment of internal controls over financial reporting as of December 31, 2018. These parks made up less than 2% of total assets and less than 5% of our total revenues on our consolidated financial statements.

The effectiveness of our internal control over financial reporting as of December 31, 2018 has been audited by KPMG LLP, the independent registered public accounting firm that audited our financial statements included herein, as stated in their report which is included herein.

/s/ JAMES REID-ANDERSON

James Reid-Anderson
Chairman, President and Chief Executive Officer

/s/ MARSHALL BARBER

Marshall Barber

Executive Vice President and Chief Financial Officer

February 19, 2019

43

Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors

Six Flags Entertainment Corporation:

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting

We have audited the accompanying consolidated balance sheets of Six Flags Entertainment Corporation and subsidiaries (the Company) as of December 31, 2018 and 2017, the related consolidated statements of operations, comprehensive income, equity (deficit), and cash flows for each of the years in the three-year period ended December 31, 2018, and the related notes (collectively, the consolidated financial statements). We also have audited the Company’s internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework(2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2018 and 2017, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2018, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

The Company acquired five park operations of Premier Parks, LLC during 2018 through an asset purchase agreement, and management excluded from its assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2018, the five park operations of Premier Parks, LLC’s internal control over financial reporting associated with total assets of less than 2% of consolidated total assets and total revenues of less than 5% of consolidated total revenues included in the consolidated financial statements of the Company as of and for the year ended December 31, 2018. Our audit of internal control over financial reporting of the Company also excluded an evaluation of the internal control over financial reporting of the five park operations of Premier Parks, LLC.

Change in Accounting Principle

As discussed in Notes 2 and 3 to the consolidated financial statements, the Company changed its method of accounting for revenue recognition on January 1, 2108, due to the adoption of Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 606, Revenue from Contracts with Customers.

Basis for Opinions

The Company’s management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s consolidated financial statements and an opinion on the Company’s internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

44

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

KPMG LLP

We have served as the Company’s auditor since 1993.

Dallas, Texas

February 19, 2019

45

SIX FLAGS ENTERTAINMENT CORPORATION

Consolidated Balance Sheets

	December 31,
(Amounts in thousands, except share data)	2018			2017
ASSETS
Current assets:
Cash and cash equivalents	$	44,608		$	77,496
Accounts receivable, net	116,043			72,693
Inventories	28,779			24,960
Prepaid expenses and other current assets	52,499			45,923
Total current assets	241,929			221,072
Property and equipment, net:
Property and equipment, at cost	2,204,678			2,095,887
Accumulated depreciation	(950,996		)	(857,930		)
Total property and equipment, net	1,253,682			1,237,957
Other assets:
Debt issuance costs	1,793			2,991
Deposits and other assets	11,277			12,821
Goodwill	659,618			630,248
Intangible assets, net of accumulated amortization	349,029			351,587
Total other assets	1,021,717			997,647
Total assets	$	2,517,328		$	2,456,676
LIABILITIES AND STOCKHOLDERS' DEFICIT
Current liabilities:
Accounts payable	$	32,905		$	28,998
Accrued compensation, payroll taxes and benefits	30,468			26,576
Accrued insurance reserves	39,183			39,347
Accrued interest payable	30,697			26,288
Other accrued liabilities	45,880			34,617
Deferred revenue	146,227			142,014
Short-term borrowings	43,000			—
Total current liabilities	368,360			297,840
Noncurrent Liabilities:
Long-term debt, net	2,063,512			2,021,178
Other long-term liabilities	29,280			41,488
Deferred income taxes	173,998			106,851
Total noncurrent liabilities	2,266,790			2,169,517
Total liabilities	2,635,150			2,467,357
Redeemable noncontrolling interests	525,271			494,431
Stockholders' deficit:
Preferred stock, $1.00 par value	—			—
Common stock, $0.025 par value, 140,000,000 shares authorized and 83,962,182 and 84,488,433 shares issued and outstanding at December 31, 2018 and December 31, 2017, respectively	2,099			2,112
Capital in excess of par value	1,037,640			1,086,265
Accumulated deficit	(1,611,334		)	(1,529,608		)
Accumulated other comprehensive loss, net of tax	(71,498		)	(63,881		)
Total stockholders' deficit	(643,093		)	(505,112		)
Total liabilities and deficit	$	2,517,328		$	2,456,676

See accompanying notes to consolidated financial statements.

46

SIX FLAGS ENTERTAINMENT CORPORATION

Consolidated Statements of Operations

	Year Ended December 31,
(Amounts in thousands, except per share data)	2018			2017			2016
Park admissions	$	810,064		$	741,275		$	715,413
Park food, merchandise and other	553,527			524,582			521,167
Sponsorship, international agreements and accommodations	100,116			93,217			82,818
Total revenue	1,463,707			1,359,074			1,319,398
Operating expenses (excluding depreciation and amortization shown separately below)	574,724			511,873			490,116
Selling, general and administrative expenses (including a net reversal of stock-based compensation of $46,684 in 2018 and $22,697 in 2017, and stock-based compensation of $116,339 in 2016 and excluding depreciation and amortization shown separately below)	132,168			159,070			293,005
Costs of products sold	121,803			110,374			109,579
Other net periodic pension benefit	(5,169		)	(3,322		)	(1,920		)
Depreciation	113,246			109,206			104,290
Amortization	2,447			2,465			2,603
Loss on disposal of assets	1,879			3,959			1,968
Interest expense	108,034			99,766			82,377
Interest income	(791		)	(756		)	(505		)
Loss on debt extinguishment	—			37,116			2,935
Other expense, net	3,508			271			1,684
Income before income taxes	411,858			329,052			233,266
Income tax expense	95,855			16,026			76,539
Net income	316,003			313,026			156,727
Less: Net income attributable to noncontrolling interests	(40,007		)	(39,210		)	(38,425		)
Net income attributable to Six Flags Entertainment Corporation	$	275,996		$	273,816		$	118,302
Weighted-average common shares outstanding:
Basic:	84,100			86,802			92,349
Diluted:	85,445			88,494			94,398
Net income per average common share:
Basic:	$	3.28		$	3.15		$	1.28
Diluted:	$	3.23		$	3.09		$	1.25
Cash dividends declared per common share	$	3.16		$	2.62		$	2.38

See accompanying notes to consolidated financial statements.

47

SIX FLAGS ENTERTAINMENT CORPORATION

Consolidated Statements of Comprehensive Income

	Years Ended December 31,
(Amounts in thousands)	2018			2017			2016
Net income	$	316,003		$	313,026		$	156,727
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment (1)	1,161			1,376			(4,639		)
Defined benefit retirement plan (2)	661			1,402			3,543
Change in cash flow hedging (3)	—			525			470
Other comprehensive income (loss), net of tax	1,822			3,303			(626		)
Comprehensive income	317,825			316,329			156,101
Comprehensive income attributable to noncontrolling interests	(40,007		)	(39,210		)	(38,425		)
Comprehensive income attributable to Six Flags Entertainment Corporation	$	277,818		$	277,119		$	117,676

________________________________________

(1) Foreign currency translation adjustment is presented net of tax expense of $0.3 million and $1.7 million for the years ended December 31, 2018 and 2017, respectively, and net of tax benefit of $2.5 million for the year ended December 31, 2016.

(2) Defined benefit retirement plan is presented net of tax expense of $0.2 million, $0.6 million and $2.3 million for the years ended December 31, 2018, 2017 and 2016, respectively.

(3) Change in cash flow hedging is presented net of tax expense of $0.3 million for the years ended December 31, 2017and 2016.

See accompanying notes to consolidated financial statements.

48

SIX FLAGS ENTERTAINMENT CORPORATION

Consolidated Statements of Equity (Deficit)

	Common stock					Capital in excess of par value			Accumulated deficit			Accumulated other comprehensive loss			Total Equity (Deficit)
(Amounts in thousands, except share data)	Shares issued		Amount
Balances at December 31, 2015	91,550,851		$	2,289		$	1,041,710		$	(953,225	)	$	(66,558	)	$	24,216
Issuance of common stock	3,004,648		75			34,606			—			—			34,681
Stock-based compensation	—		—			116,339			—			—			116,339
Dividends declared to common shareholders	—		—			—			(219,093		)	—			(219,093		)
Repurchase of common stock	(3,742,275	)	(94		)	(27,833		)	(183,824		)	—			(211,751		)
Employee stock purchase plan	36,204		1			1,819			—			—			1,820
Fresh start valuation adjustment for SFOG units purchased	—		—			—			36			—			36
Change in redemption value of partnership units	—		—			(50,414		)	—			—			(50,414		)
Net income attributable to Six Flags Entertainment Corporation	—		—			—			118,302			—			118,302
Other comprehensive loss, net of tax	—		—			—			—			(626		)	(626		)
Balances at December 31, 2016	90,849,428		$	2,271		$	1,116,227		$	(1,237,804	)	$	(67,184	)	$	(186,490	)
Cumulative effect adjustment - adoption of ASU 2016-09	—		—			—			98,657			—			98,657
Balances at January 1, 2017	90,849,428		2,271			1,116,227			(1,139,147		)	(67,184		)	(87,833		)
Issuance of common stock	1,980,939		50			60,533			—			—			60,583
Stock-based compensation	—		—			(22,697		)	—			—			(22,697		)
Dividends declared to common shareholders	—		—			—			(226,078		)	—			(226,078		)
Repurchase of common stock	(8,377,729	)	(210		)	(61,001		)	(438,231		)	—			(499,442		)
Employee stock purchase plan	35,795		1			1,918			—			—			1,919
Fresh start valuation adjustment for SFOT units purchased	—		—			—			32			—			32
Change in redemption value of partnership units	—		—			(8,715		)	—			—			(8,715		)
Net income attributable to Six Flags Entertainment Corporation	—		—			—			273,816			—			273,816
Other comprehensive income, net of tax	—		—			—			—			3,303			3,303
Balances at December 31, 2017	84,488,433		$	2,112		$	1,086,265		$	(1,529,608	)	$	(63,881	)	$	(505,112	)
Cumulative effect adjustment (Note 2)	—		—			—			4,557			(9,439		)	(4,882		)
Balances at January 1, 2018	84,488,433		2,112			1,086,265			(1,525,051		)	(73,320		)	(509,994		)
Issuance of common stock	1,264,497		31			41,626			—			—			41,657
Stock-based compensation	—		—			(46,684		)	—			—			(46,684		)
Dividends declared to common shareholders	—		—			—			(265,755		)	—			(265,755		)
Repurchase of common stock	(1,827,991	)	(45		)	(14,341		)	(96,604		)	—			(110,990		)
Employee stock purchase plan	37,243		1			2,047			—			—			2,048
Fresh start valuation adjustment for SFOT units purchased	—		—			—			80			—			80
Change in redemption value of partnership units	—		—			(31,273		)	—			—			(31,273		)
Net income attributable to Six Flags Entertainment Corporation	—		—			—			275,996			—			275,996
Other comprehensive income, net of tax	—		—			—			—			1,822			1,822
Balances at December 31, 2018	83,962,182		$	2,099		$	1,037,640		$	(1,611,334	)	$	(71,498	)	$	(643,093	)

See accompanying notes to consolidated financial statements.

49

SIX FLAGS ENTERTAINMENT CORPORATION

Consolidated Statements of Cash Flows

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Cash flow from operating activities:
Net income	$	316,003		$	313,026		$	156,727
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	115,693			111,671			106,893
Stock-based compensation	(46,684		)	(22,697		)	116,339
Interest accretion on notes payable	1,344			1,056			413
Loss on debt extinguishment	—			37,116			2,935
Amortization of debt issuance costs	3,979			4,061			4,503
Other, including loss on disposal of assets	574			6,875			992
Increase in accounts receivable	(39,193		)	(3,108		)	(6,157		)
Increase in inventories, prepaid expenses and other current assets	(3,769		)	(1,847		)	(4,948		)
Decrease (increase) in deposits and other assets	1,633			(3,597		)	(2,011		)
(Decrease) increase in accounts payable, deferred revenue, accrued liabilities and other long-term liabilities	(13,750		)	5,478			16,134
Increase (decrease) in accrued interest payable	4,409			(1,396		)	8,129
Deferred income tax expense (benefit)	72,893			(1,571		)	63,286
Net cash provided by operating activities	413,132			445,067			463,235
Cash flow from investing activities:
Additions to property and equipment	(135,624		)	(135,219		)	(129,258		)
Property insurance recovery	2,500			523			320
Purchase of identifiable intangible assets	—			—			(125		)
Acquisition of park assets	(19,059		)	—			—
Sale (purchase) of restricted-use investments, net	—			3,926			(890		)
Proceeds from sale of assets	71			607			2,212
Net cash used in investing activities	(152,112		)	(130,163		)	(127,741		)
Cash flow from financing activities:
Repayment of borrowings	(274,000		)	(949,161		)	(333,426		)
Proceeds from borrowings	356,000			1,313,000			481,170
Payment of debt issuance costs	(793		)	(37,336		)	(6,278		)
Net proceeds from issuance of common stock	43,705			62,502			36,501
Stock repurchases	(110,990		)	(499,442		)	(211,751		)
Payment of cash dividends	(267,044		)	(227,101		)	(220,314		)
Purchase of redeemable noncontrolling interest	(353		)	(128		)	(223		)
Noncontrolling interest distributions	(40,007		)	(39,210		)	(38,425		)
Net cash used in financing activities	(293,482		)	(376,876		)	(292,746		)
Effect of exchange rate on cash	(426		)	2,083			(5,123		)
(Decrease) increase in cash and cash equivalents	(32,888		)	(59,889		)	37,625
Cash and cash equivalents at beginning of period	77,496			137,385			99,760
Cash and cash equivalents at end of period	$	44,608		$	77,496		$	137,385
Supplemental cash flow information
Cash paid for interest	$	98,302		$	96,045		$	69,320
Cash paid for income taxes	$	30,009		$	14,473		$	17,267

See accompanying notes to consolidated financial statements.

50

SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

1. Description of Business

We own and operate regional theme and waterparks and are the largest regional theme park operator in the world and the largest operator of waterparks in North America. Of the 25 parks we currently own or operate, 22 parks are located in the United States, two parks are located in Mexico and one park is located in Montreal, Canada.

On April 1, 1998, we acquired the former Six Flags Entertainment Corporation ("Former SFEC", a corporation that has been merged out of existence and that has always been a separate corporation from the current Six Flags Entertainment Corporation ("Holdings")), which had operated regional theme parks and waterparks under the Six Flags name for nearly 40 years, and established an internationally recognized brand name. We own the "Six Flags" brand name in the United States and foreign countries throughout the world. To capitalize on this name recognition, 21 of our current parks are branded as "Six Flags" parks and beginning in 2014 we also began the development, with third-party partners, of Six Flags-branded parks outside of North America.

2. Summary of Significant Accounting Policies

a. Basis of Presentation

The consolidated financial statements include our accounts and the accounts of our wholly owned subsidiaries. We also consolidate the partnerships that own Six Flags Over Texas ("SFOT") and Six Flags Over Georgia (including Six Flags White Water Atlanta) ("SFOG", and together with SFOT, the "Partnership Parks") as subsidiaries in our consolidated financial statements as we have determined that we have the power to direct the activities of those entities that most significantly impact the entities' economic performance and we have the obligation to absorb losses and receive benefits from the entities that can be potentially significant to these entities. The equity interests owned by non-affiliated parties in the Partnership Parks are reflected in the accompanying consolidated balance sheets as redeemable noncontrolling interests. The portion of earnings or loss attributable to non-affiliated parties in the Partnership Parks is reflected as net income attributable to noncontrolling interests in the accompanying consolidated statements of operations. See Note 6 for further discussion.

Intercompany transactions and balances have been eliminated in consolidation.

b. Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. We evaluate our estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which we believe to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods.

c. Fair Value Measurement

Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 820, Fair Value Measurement, defines fair value as the exchange prices that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The guidance also specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumptions. In accordance with FASB ASC Topic 820, Fair Value Measurement, these two types of inputs have created the following fair value hierarchy:

• Level 1: quoted prices in active markets for identical assets;

• Level 2: inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the instrument; and

• Level 3: inputs to the valuation methodology are unobservable for the asset or liability.

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Notes to Consolidated Financial Statements

The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. We use a market approach for our recurring fair value measurements, and we endeavor to use the best information available. Accordingly, valuation techniques that maximize the use of observable impacts are favored. We present the estimated fair values and classifications of our financial instruments in accordance with FASB Accounting Standards Consideration ("ASC") Topic 820, Fair Value Measurement.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments:

• The carrying values of cash and cash equivalents, accounts receivable, notes receivable, accounts payable and accrued liabilities approximate fair value because of the short maturity of these instruments.

• The measurement of the fair value of long-term debt is based on market prices that generally are observable for similar liabilities at commonly quoted intervals and is considered a Level 2 fair value measurement. Refer to Note 7 for additional information.

d. Cash Equivalents

Cash equivalents consists of short-term highly liquid investments with a remaining maturity as of the date of purchase of three months or less, which are readily convertible into cash. For purposes of the consolidated statements of cash flows, we consider all highly liquid debt instruments with remaining maturities as of their date of purchase of three months or less to be cash equivalents. Cash equivalents were not significant as of December 31, 2018 and 2017.

e. Inventories

Inventories are stated at lower of weighted average cost or net realizable value and primarily consist of products purchased for resale, including merchandise, food and miscellaneous supplies. Products are removed from inventory at weighted average cost. We have recorded a nominal valuation allowance for slow moving inventory as of December 31, 2018 and $0.3 million as of December 31, 2017.

f. Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets include $22.9 million and $21.1 million of spare parts inventory for existing rides and attractions as of December 31, 2018 and 2017, respectively. These items are expensed as the repair or maintenance of rides and attractions occur.

g. Advertising Costs

Production costs of commercials and programming are charged to operations in the year first aired. The costs of other advertising, promotion, and marketing programs are charged to operations when incurred with the exception of direct-response advertising which is charged to the period it will benefit. As of December 31, 2018 and 2017, we had $1.6 million and $1.9 million in prepaid advertising, respectively. The amounts capitalized are included in prepaid expenses.

Advertising and promotions expense was $68.4 million, $63.7 million and $62.8 million for the years ended December 31, 2018, 2017 and 2016, respectively.

h. Debt Issuance Costs

We capitalize costs related to the issuance of debt. Debt issuance costs directly related to our Revolving Loan are presented within other assets as debt issuance costs in our consolidated balance sheets. Debt issuance costs directly related to our Amended and Restated Term Loam B and our senior unsecured notes are presented within noncurrent liabilities as a reduction of long-term debt in our consolidated balance sheets. The amortization of such costs is recognized as interest expense using the interest method over the term of the respective debt issue. Amortization related to deferred debt issuance costs was $4.0 million, $4.1 million and $4.5 million for the years ended December 31, 2018, 2017 and 2016 respectively. See Note 7 for further discussion.

i. Property and Equipment

Property and equipment additions are recorded at cost and the carrying value is depreciated using the straight-line method over the estimated useful lives of the assets. Maintenance and repair costs that do not improve service potential or extend economic life are charged directly to expense as incurred, while betterments and renewals are generally capitalized as property and equipment. When an item is retired or otherwise disposed of, the cost and applicable accumulated depreciation are removed and the resulting gain or loss is recognized. See Note 4 for further detail of the components of our property and equipment.

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Notes to Consolidated Financial Statements

The estimated useful lives of the assets are as follows:

Rides and attractions	5 - 25 years
Land improvements	10 - 15 years
Buildings and improvements	Approximately 30 years
Furniture and equipment	5 - 10 years

j. Goodwill and Indefinite-Lived Intangible Assets

Goodwill and intangible assets with indefinite useful lives are tested for impairment annually, or more frequently if events or circumstances indicate that the assets might be impaired. We identify our reporting unit and determine the carrying value of the reporting unit by assigning the assets and liabilities, including the existing goodwill and intangible assets, to the reporting unit. We then determine the fair value of the reporting unit and compare it to the carrying amount of the reporting unit. All of our parks are operated in a similar manner and have comparable characteristics in that they produce and distribute similar services and products using similar processes, have similar types of customers, are subject to similar regulations and exhibit similar economic characteristics. As such, we are a single reporting unit. For each year, the fair value of the single reporting unit exceeded our carrying amount (provided that, we have one reporting unit at the same level for which our Holdings common stock is traded, we believe our market capitalization is the best indicator of our reporting unit's fair value). In September 2012, the FASB amended FASB ASC Topic 350, Intangibles - Goodwill and Other, which permits entities to perform a qualitative analysis on indefinite-lived intangible assets to determine if it is more likely than not that the fair value of the intangible asset was less than its carrying amount as a basis for determining whether it was necessary to perform a quantitative impairment test. We adopted this amendment in September 2012 and have performed a qualitative analysis on our indefinite-lived intangible assets during the fourth quarter of each year.

The fair value of indefinite-lived intangible assets is generally determined based on a discounted cash flow analysis. An impairment loss occurs to the extent that the carrying value exceeds the fair value. For goodwill, if the fair value of the reporting unit were to be less than the carrying amount, an impairment loss would be recognized to the extent that the carrying amount of the reporting unit exceeds its fair value.

k. Valuation of Long-Lived Assets

We review long-lived assets, including finite-lived intangible assets subject to amortization, for impairment upon the occurrence of events or changes in circumstances that would indicate that the carrying value of the asset or group of assets may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset or group of assets to the future net cash flows expected to be generated by the asset or group of assets. If such assets are not considered to be fully recoverable, any impairment to be recognized is measured by the amount by which the carrying amount of the asset or group of assets exceeds its respective fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.

l. Revenue Recognition

FASB ASC 606, Revenue from Contracts with Customers (together with the series of Accounting Standards Updates described in the first paragraph under "Recently Adopted Accounting Pronouncements" below, "Topic 606") is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects consideration to which the entity expects to be entitled in exchange for those goods or services.

We recognize revenue upon admission into our parks, provision of our services or when products are delivered to our guests. Revenues are presented in the accompanying consolidated statements of operations net of sales taxes collected from our guests and remitted or payable to government taxing authorities. In contrast to our season pass and other multi-use offerings (such as our all season dining pass program, which enables season pass holders and members to eat meals and snacks any day they visit the park for one upfront payment) that expire at the end of each operating season, the membership program continues on a month-to-month basis after the initial twelve-month membership term and can be canceled any time after the initial term pursuant to the terms of the membership program. Guests enrolled in the membership program can visit our parks an unlimited number of times anytime they are open as long as the guest remains enrolled in the membership program. For season passes, memberships in the initial twelve-month term and other multi-use admissions, we estimate a redemption rate based on historical experience and other factors and assumptions we believe to be customary and reasonable and recognize a pro-rata portion of the revenue as the guest attends our parks. We review the estimated redemption rate regularly and on an ongoing basis and revise it as necessary throughout the year. Amounts received for multi-use admissions in excess of redemptions are recognized in deferred revenue. For active memberships after the initial twelve-month term, we recognize revenue monthly as payments are

53

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Notes to Consolidated Financial Statements

received. As of December 31, 2018, deferred revenue was primarily comprised of (i) advance sales of season passes, all season dining passes and other admissions for the 2019 operating season, (ii) unredeemed portions of the membership program that will be recognized in 2019, and (iii) sponsorship, international agreements and other fee-based revenue that will be recognized in 2019.

We have entered into international agreements to assist third parties in the planning, design, development and operation of Six Flags-branded parks outside of North America. These agreements typically consist of a brand licensing agreement, project services agreement, and management services agreement. Under Topic 606, we treat these agreements as one contract because each was negotiated with a single commercial objective. We have identified three distinct promises within the agreement with each third party partner as brand licensing, project services, and management services. Each of these promises is its own performance obligation and distinct as the third party could benefit from each service on its own with other readily available resources and each service is separately identifiable from other services in the context of the contract. We recognize revenue under our international agreements over the relevant service period of each performance obligation based on its relative stand-alone selling price, as determined by our best estimate of selling price. We review the service period of each performance obligation on an ongoing basis and revise it as necessary throughout the year. Revisions to the relevant service periods of the performance obligations may result in revisions to revenue in future periods and are recognized in the period in which the change is identified.

On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under FASB ASC 605, Revenue Recognition ("Topic 605"). See Note 3 for additional information.

m. Accounts Receivable, Net

Accounts receivable are reported at net realizable value and consist primarily of amounts due from guests for the sale of group outings and multi-use admission products, including season passes and the membership program. We are not exposed to a significant concentration of credit risk, however, based on the age of the receivables, our historical experience and other factors and assumptions we believe to be customary and reasonable, we do record an allowance for doubtful accounts. As of December 31, 2018 and 2017, we have recorded an allowance for doubtful accounts of $7.4 million and $4.2 million, respectively. The allowance for doubtful accounts is primarily comprised of estimated defaults under our membership plans.

n. Derivative Instruments and Hedging Activities

We account for derivatives and hedging activities in accordance with FASB ASC Topic 815, Derivatives and Hedging. This accounting guidance establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts, and for hedging activities. It requires an entity to recognize all derivatives as either assets or liabilities in the consolidated balance sheet and measure those instruments at fair value. If certain conditions are met, a derivative may be specifically designated as a hedge for accounting purposes. The accounting for changes in the fair value of a derivative (e.g., gains and losses) depends on the intended use of the derivative and the resulting designation.

We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and our strategy for undertaking various hedge transactions. This process includes linking all derivatives that are designated as cash flow hedges to forecasted transactions. We also assess, both at the hedge's inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items.

Change in the fair value of a derivative that is effective and that is designated and qualifies as a cash-flow hedge are recorded in other comprehensive income (loss) until operations are affected by the variability in cash flows of the designated hedged item, at which point they are reclassified to interest expense. Change in fair value of a derivative that is not designated as a hedge are recorded in other income (expense), net in the consolidated statements of operations on a current basis. As of December 31, 2017, the interest rate swap agreements expired and all related amounts previously held as derivative assets and liabilities on the consolidated balance sheets and previously recorded in accumulated other comprehensive income were realized in earnings.

o. Commitments and Contingencies

We are involved in various lawsuits and claims that arise in the normal course of business. Amounts associated with lawsuits or claims are reserved for matters in which it is believed that losses are probable and can be reasonably estimated. In addition to matters in which it is believed that losses are probable, disclosure is also provided for matters in which the

54

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Notes to Consolidated Financial Statements

likelihood of an unfavorable outcome is at least reasonably possible but for which a reasonable estimate of loss or range of loss is not possible. Legal fees are expensed as incurred. See Note 14 for further discussion.

p. Income Taxes

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, including net operating loss and other tax carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date. We have a valuation allowance of $115.2 million and $113.5 million as of December 31, 2018 and 2017, respectively, due to uncertainties related to our ability to utilize some of our deferred tax assets, primarily consisting of certain state net operating loss and other tax carryforwards, before they expire. The valuation allowance was based on our estimates of taxable income by jurisdiction in which we operate and the period over which our deferred tax assets were recoverable. For the foreseeable future, we project taxable income that will allow for the utilization of all of our federal net operating loss carryforwards before they expire.

Our liability for income taxes is finalized as auditable tax years pass their respective statutes of limitations in the various jurisdictions in which we are subject to tax. However, these jurisdictions may audit prior years for which the statute of limitations is closed for the purpose of making an adjustment to our taxable income in a year for which the statute of limitations has not closed. Accordingly, taxing authorities of these jurisdictions may audit prior years of the group and its predecessors for the purpose of adjusting net operating loss carryforwards to years for which the statute of limitations has not closed.

We classify interest and penalties attributable to income taxes as part of income tax expense. As of December 31, 2018 and 2017, we had no accrued interest and penalties liability.

Because we do not permanently reinvest foreign earnings, United States deferred income taxes have been provided on unremitted foreign earnings to the extent that such foreign earnings are expected to be taxable upon repatriation.

On December 22, 2017, the Tax Act was signed into law. The Tax Act contained significant changes to corporate taxation, including reduction of the corporate tax rate from 35% to 21% effective January 1, 2018, limitation of the tax deduction for interest expense, limitation of the deduction for net operating losses and elimination of net operating loss carrybacks, one time taxation of offshore earnings at reduced rates, elimination of U.S. tax on foreign earnings (subject to certain important exceptions), new taxes concerning global intangible low-tax income (GILTI), immediate deductions for certain new investments instead of deductions for depreciation expense over time, and modifying or repealing many business deductions and credits including the limitation on deductions for certain executive compensation arrangements under Section 162(m) of the Internal Revenue Code. All corporation taxation aspects of the Tax Act are included in our year ended December 31, 2017 tax provision. See Note 10 for further discussion.

q. Earnings Per Common Share

Basic earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding during the period including the effect of all dilutive common stock equivalents using the treasury stock method. In periods for which there is a net loss, diluted loss per common share is equal to basic loss per common share, since the effect of including any common stock equivalents would be antidilutive.

r. Stock-Based Compensation

Pursuant to the Six Flags Entertainment Corporation Long-Term Incentive Plan (the "Long-Term Incentive Plan"), Holdings may grant stock options, stock appreciation rights, restricted stock, restricted stock units, unrestricted stock, deferred stock units, performance and cash-settled awards and dividend equivalents to select employees, officers, directors and consultants of Holdings and its affiliates. We recognize the fair value of each grant as compensation expense on a straight-line basis over the vesting period using the graded vesting terms of the respective grant. The fair value of stock option grants is estimated on the date of grant using the Black-Scholes option pricing valuation model. The fair value of stock, restricted stock units and restricted stock awards is the quoted market price of Holdings' stock on the date of grant. See Note 9 for further discussion of stock-based compensation and related disclosures.

s. Comprehensive Income

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

Comprehensive income consists of net income, changes in the foreign currency translation adjustment, changes in the fair value of derivatives that are designated as hedges and changes in the net actuarial gains (losses) and amortization of prior service costs on our defined benefit retirement plan.

t. Redeemable Noncontrolling Interest

We record the carrying amount of our redeemable noncontrolling interests at their fair value at the date of issuance. We recognize the changes in their redemption value immediately as they occur and adjust the carrying value of these redeemable noncontrolling interests to equal the redemption value at the end of each reporting period, if greater than the redeemable noncontrolling interest carrying value.

This method would view the end of the reporting period as if it were also the redemption date for the redeemable noncontrolling interests. We conduct an annual review to determine if the fair value of the redeemable units is less than the redemption amount. If the fair value of the redeemable units is less than the redemption amount, there would be a charge to earnings per share allocable to common stockholders. The redemption amount at the end of each reporting period did not exceed the fair value of the redeemable units.

u. Acquisition of Park Assets

On May 22, 2018, we entered into an asset purchase agreement with Premier Parks, LLC and its affiliates to acquire the lease rights to operate five parks owned by EPR Properties, LLC (the "five new parks"). We completed the transaction on June 1, 2018. In connection with the purchase agreement, we entered into operating leases with EPR Properties, LLC, under which we are the tenant. The five new parks were previously operated by Premier Parks, LLC of Oklahoma City and its affiliates. These acquisitions expanded our portfolio of parks in North America to twenty-five. The financial results of the five new parks since the acquisition date are included in our consolidated statements of operations. Assets acquired and liabilities assumed, consisting primarily of working capital, are reflected in our consolidated financial statements. We paid $19.1 million in cash to Premier Parks, LLC for the five new parks, which reflects the $23.0 million purchase price, less net working capital and other adjustments. We recorded $29.4 million of goodwill in connection with the acquisition, which is attributable to the excess of the purchase price over the net working capital liabilities we assumed.

v. Recently Adopted Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). The amendments in ASU 2014-09 provide for a single, principles-based model for revenue recognition that replaces the existing revenue recognition guidance. In August 2015, the FASB issued Accounting Standards Update 2015-14, Revenue from Contracts with Customers - Deferral of the Effective Date ("ASU 2015-14"), to defer the effective date of ASU 2014-09 for one year. The new guidance became effective for annual and interim periods beginning after December 15, 2017 and replaced most existing revenue recognition guidance under U.S. GAAP. In March and April 2016, the FASB issued Accounting Standards Update No. 2016-08 and No. 2016-10, Revenue from Contracts with Customers (Topic 606)and Principal versus Agent Considerations and Identifying Performance Obligations and Licensing, respectively (together, "ASU 2016-08/10"). The amendments in ASU 2016-08/10 state that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The effective date and transition requirements for the amendments in ASU 2016-08/10 are the same as the effective date and transition requirements in ASU 2015-14. ASU 2016 08/10 permits the use of either a retrospective or cumulative effect transition method, and early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. On January 1, 2018, we adopted Topic 606 using the modified retrospective transition method applied to those contracts with customers which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under FASB ASC 605, Revenue Recognition ("Topic 605"). Refer to Note 3 for additional information.

In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments ("ASU 2016-15"). The amendments in ASU 2016-15 address eight classification issues related to the statement of cash flows:

• debt repayment or debt extinguishment costs;

• settlement of zero-coupon bonds;

• contingent consideration payments made after a business combination;

• proceeds from insurance claims;

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

• proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies;

• distribution received from equity method investees;

• beneficial interests in securitization transactions; and

• separately identifiable cash flows and application of the predominance principle.

On January 1, 2018, we adopted ASU 2016-15 using a retrospective transition method to each period presented. The adoption of ASU 2016-15 did not result in a material impact to the presentation of our condensed consolidated statement of cash flows.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash ("ASU 2016-18"). The amendments in ASU 2016-18 require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The accounting effects of ASU 2016-18 did not result in a material impact to the presentation of our consolidated statement of cash flows.

In March 2017, the FASB issued Accounting Standards Update No. 2017-07, Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost ("ASU 2017-07"). The amendments in ASU 2017-07 require that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The amendments in ASU 2017-07 also require that an employer disaggregate the service cost component from the other components of net benefit cost. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The amendments in ASU 2017-07 should be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic post-retirement benefit cost in the consolidated statements of operations. On January 1, 2018, we adopted ASU 2017-07 using a retrospective transition method to each period presented. Accordingly, the service cost component of net periodic pension cost allocated to our park employees and corporate employees was included within "Operating expenses" and "Selling, general and administrative expenses," respectively, while the other cost components were included in "Other net periodic pension benefit" in the condensed consolidated statements of operations.

Certain prior year amounts in the consolidated statements of operations were reclassified to conform to current year presentation in connection with the adoption of ASU 2017-07. For the years ended December 31, 2017 and 2016, the Company reclassified $2.7 million and $0.7 million, respectively, from "Operating expenses" to "Other net periodic pension benefit." This amount represents the non-service cost component of net periodic pension costs allocable to our park level employees. For the years ended December 31, 2017 and 2016, the Company reclassified $0.6 million and $1.2 million, respectively, from "Selling, general and administrative expenses" to "Other net periodic pension benefit". This amount represents the non-service cost component of net periodic pension costs allocable to our corporate employees. A nominal amount of non-service cost components remains in "Other (income) expense, net" and is not reclassified to "Other net periodic pension benefit." These amounts directly relate to certain other parks that we no longer operate but continue to service pension benefits for former employees of those parks.

In February 2018, the FASB issued Accounting Standards Update No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02"). The amendments in ASU 2018-02 allow entities to reclassify from "Accumulated other comprehensive income" ("AOCI") to retained earnings "stranded" tax effects resulting from passage of the Tax Act. An entity that elects to reclassify these amounts must reclassify stranded tax effects related to the change in federal tax rate for all items accounted for in AOCI (e.g., employee benefits and cumulative translation adjustments). Entities may also elect to reclassify other stranded tax effects that relate to the Tax Act but do not directly relate to the change in the federal tax rate (e.g., state taxes). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance requiring the effect of a change in tax laws or rates to be included in income from operations is not affected. Upon adoption of ASU 2018-02, entities are required to disclose their policy for releasing the income tax effects from AOCI. ASU 2018-02 is effective for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The amendments in ASU 2018-02 may be applied retrospectively to each period in which the effect of the Tax Act is recognized or an entity may elect to apply the amendments in the period of adoption. On January 1, 2018, we elected to early adopt ASU 2018-02, and applied the amendments in the period of adoption. As a result, we r

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Notes to Consolidated Financial Statements

eclassified $9.4 million of "stranded" tax effects of the Tax Act from "Accumulated other comprehensive loss" to "Accumulated deficit" as of January 1, 2018.

w. Recent Accounting Pronouncements Not Yet Adopted

In May 2016, FASB issued ASU No. 2016-02, Leases, ("Topic 842"), which requires a lessee to recognize assets and liabilities for leases with lease terms of more than 12 months. The recognition, measurement and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance (formerly capital) or operating lease. However, unlike current GAAP, which requires only capital leases to be recognized on the balance sheet, ASU 2016-02 will require all leases with an initial term greater than one year to be recognized on the balance sheet as a right-of-use asset and a lease liability. ASU 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is allowed. The standard provides for a transition method using a modified retrospective approach, which includes a number of optional practical expedients. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842) Targeted Improvements, which allows lessees to recognize and measure leases at the beginning of the period of adoption without modifying the comparative period financial statements.

The Company adopted ASU 2016-02 as of January 1, 2019 using the modified retrospective method as of the period of adoption. The Company has elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows the Company to carryforward the historical lease classification. The Company has made an accounting policy election to keep leases with an initial term of 12 months or less off the balance sheet. The Company will recognize those lease payments in the consolidated statements of operations on a straight-line basis over the lease term. Related to adoption of the new standard, the Company has implemented internal controls and a lease accounting technology system to enable the preparation of financial statements.

The Company currently expects the most significant impact will be the recognition of ROU assets and lease liabilities for operating leases with original terms of over one year where the Company is the lessee. The Company estimates adoption of the new lease standard will result in recognition of ROU assets and lease liabilities of between $200 million and $230 million, as of January 1, 2019. The Company does not expect a material impact on its consolidated statements of operations. The standard will not impact our debt covenant compliance under our current agreements.

3. Revenue

On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under Topic 605.

We recorded a net reduction to our opening "Accumulated deficit" of $4.9 million, net of taxes of $1.3 million as of January 1, 2018, to recognize the cumulative impact of adopting Topic 606, with the impact primarily related to our international agreements revenue. During the year ended December 31, 2018 we recognized $0.9 million less revenue as a result of applying Topic 606.

Revenue Recognition

Revenues are recognized when control of the promised goods or services is transferred to our customers in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. Sales and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. Incidental items that are immaterial in the context of the contract are recognized as expense.

In accordance with the new revenue standard disclosure requirements, the impact of adoption of Topic 606 on our condensed consolidated balance sheet as of December 31, 2018 was as follows:

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Notes to Consolidated Financial Statements

(Amounts in thousands)	Balance at December 31, 2018
Balance Sheet	As Reported			Balances Without Adoption			Effect of Change Higher/(Lower)
Assets
Accounts receivable, net	$	116,043		$	121,209		$	(5,166	)
Liabilities
Deferred revenue	146,227			148,183			(1,956		)
Deferred income taxes	173,998			172,502			1,496
Stockholders' Deficit
Accumulated deficit	(1,611,334		)	(1,616,960		)	5,626
Total stockholders' deficit	(643,093		)	(648,719		)	5,626

The impact of adoption of Topic 606 on our consolidated statements of operations for the year ended December 31, 2018 was as follows:

(Amounts in thousands)	Year Ended December 31, 2018
Statement of Operations	As Reported		Balances Without Adoption		Effect of Change Higher/(Lower)
Revenues
Sponsorship, international agreements and accommodations	$	100,116	$	101,058	$	(942	)
Costs and expenses
Income tax expense	95,855		96,053		(198		)
Net income	275,996		276,740		(744		)

The following tables present our revenues disaggregated by contract duration for the years ended December 31, 2018, 2017 and 2016, respectively. Long-term and short-term contracts consist of our contracts with customers with terms greater than one year and less than or equal to one year, respectively. Sales and usage-based taxes are excluded from revenues.

(Amounts in thousands)	Year Ended December 31, 2018
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	115,612	$	25,383	$	71,589	$	212,584
Short-term contracts and other (a)	694,452		528,144		28,527		1,251,123
Total revenues	$	810,064	$	553,527	$	100,116	$	1,463,707

(Amounts in thousands)	Year Ended December 31, 2017
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	109,943	$	20,498	$	57,934	$	188,375
Short-term contracts and other (a)	631,332		504,084		35,283		1,170,699
Total revenues	$	741,275	$	524,582	$	93,217	$	1,359,074

(Amounts in thousands)	Year Ended December 31, 2016
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	88,594	$	12,610	$	53,670	$	154,874
Short-term contracts and other (a)	626,819		508,557		29,148		1,164,524
Total revenues	$	715,413	$	521,167	$	82,818	$	1,319,398

(a) Other revenues primarily include sales of single-use tickets and short-term transactional sales for which we have the right to invoice.

Long-term Contracts

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

Our long-term contracts consist of season passes with customers, sponsorship contracts and international agreements with third parties. We earn season pass revenue when our customers purchase a season pass for a fixed fee which entitles the customer to visit our parks, including certain waterparks, throughout the duration of the parks' operating season. Current year season passes classified as long-term contracts are sold in the year preceding the operating season to which they relate. We earn sponsorship revenue from separately-priced contracts with third parties pursuant to which we sell and advertise the third party's products within the parks in exchange for consideration. Advertisements may include, but are not limited to, banners, signs, radio ads, association with certain events, sponsorship of rides within our parks, and retail promotions. We earn international agreements revenue pursuant to arrangements in which we assist in the development and management of Six Flags-branded parks outside of North America. Within our international agreements, we have identified three distinct performance obligations as brand licensing, project services and management services. We do not consider revenue recognized for the performance obligations related to our long-form agreements to be significant, neither individually nor in the aggregate, to any period presented. In future filings, we will include such a statement in our revenue footnote, subject to modification as appropriate. Refer to Note 2 for additional information on our accounting for performance obligations in these contracts.

The transaction price for our long-term contracts is explicitly stated within the contracts. Our sponsorship contracts and international agreements may include estimated variable consideration such as penalties for delay in performance of contract terms, and certain volume-based discounts and rebates. There were not significant changes to our estimates of variable consideration. Our brand licensing and management services performance obligations include royalty payments and management fees, respectively, based on gross sales from Six Flags-branded parks. We have elected to apply the sales-based royalty exemption to the brand licensing performance obligation, and accordingly do not estimate revenue attributable to the gross sales-based royalty. We have also elected to apply the direct allocation exemption to the management services performance obligation and accordingly do not estimate revenue attributable to the gross sales based management fee.

We recognize season pass revenue in "Park admissions" over the estimated redemption rate as we believe this appropriately depicts the transfer of service to our customers. We estimate the redemption rate based on historical experience and other factors and assumptions that we believe to be customary and reasonable. We review the estimated redemption rate regularly, on an ongoing basis, and revise it as necessary throughout the year. Amounts received for multi-use admissions in excess of redemptions are recognized in "Deferred revenue." We recognize sponsorship and international agreements revenue over the term of the agreements, using the passage of time as a measure of complete satisfaction of the performance obligations in "Sponsorship, international agreements and accommodations." Amounts received for unsatisfied sponsorship and international agreements performance obligations are recognized in "Deferred revenue." As a result of the adoption of Topic 606, we recognized an increase to "Sponsorship, international agreements and accommodations" revenue previously recognized in prior periods of $0.9 million during the year ended December 31, 2018, respectively.

At January 1, 2018, $111.6 million of unearned revenue associated with outstanding long-term contracts was reported in "Deferred revenue," and $109.7 million was recognized as revenue for long-term contracts during the year ended December 31, 2018. As of December 31, 2018, the total unearned amount of revenue for remaining long-term contract performance obligations was $100.8 million. As of December 31, 2018, we expect to recognize estimated revenue for partially or wholly unsatisfied performance obligations on long-term contracts of approximately $167.4 million in 2019, $64.7 million in 2020, $48.6 million in 2021 and $30.7 million in 2022 and thereafter.

Short-term Contracts and Other

Our short-term contracts consist primarily of season passes and memberships with customers, certain sponsorship contracts and international agreements with third parties. We earn revenue from customer's purchase of our season pass and membership products, which entitles the customer to visit our parks, including certain waterparks, throughout the duration of the parks' operating season for a fixed fee. We earn sponsorship and international agreements revenue from contracts with third parties, pursuant to which we sell and advertise the third party's products within our parks on a short-term basis that generally coincides with our annual operating season, and pursuant to certain activities in connection with our international agreements. The transaction price for our short-term contracts is explicitly stated within the contracts.

We generally recognize revenue from short-term contracts over the passage of time, with the exception of season pass and membership revenues. We recognize season pass and membership revenues in "Park admissions" over the estimated redemption rate, as we believe this appropriately depicts the transfer of service to our customers. We estimate the redemption rate based on historical experience and other factors and assumptions we believe to be customary and reasonable. We review the estimated redemption rate regularly and on an ongoing basis and revise it as necessary throughout the year. Amounts received for multi-use admissions in excess of redemptions are recognized in "Deferred revenue". There was no change in the pattern of recognition for season pass and membership revenue during the year ended December 31, 2018 under Topic 606, as compared to historic accounting under Topic 605.

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

Other revenues consist primarily of revenues from single-use tickets for entrance to our parks, in-park services (such as the sale of food and beverages, merchandise, games and attractions, standalone parking sales and other services inside our parks), accommodations revenue, and other miscellaneous products and services. Due to the short-term transactional nature of such purchases, we apply the practical expedient to recognize revenue for single-use ticket sales, in-park services, accommodations, and other miscellaneous services and goods for which we have the right to invoice.

Arrangements with Multiple Performance Obligations

Our contracts with customers may include multiple performance obligations. For such arrangements, we allocate revenue to each performance obligation based on its relative standalone selling price. We generally determine standalone selling prices based on the observable prices charged to customers.

Practical Expedients and Exemptions

We generally expense (i) sales commissions when incurred, and (ii) certain costs to obtain a contract where the amortization period would have been one year or less. These costs are recorded within Selling, general and administrative expenses.

We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

For certain of our contracts that have an original expected length of one year or less, we use the practical expedient applicable to such contracts and do not consider the time value of money.

4. Property and Equipment

As of December 31, 2018 and 2017, property and equipment was classified as follows:

	December 31,
(Amounts in thousands)	2018			2017
Land	$	221,616		$	221,345
Land improvements	251,295			236,135
Buildings and improvements	302,957			295,124
Rides and attractions	1,118,141			1,059,720
Equipment and other	310,669			283,563
Property and equipment, at cost	2,204,678			2,095,887
Accumulated depreciation	(950,996		)	(857,930		)
Property and equipment, net	$	1,253,682		$	1,237,957

5. Goodwill and Intangible Assets

We assess goodwill and intangible assets with indefinite lives for impairment annually during the fourth quarter or when an event occurs or circumstances change that would indicate potential impairment. For the year ended December 31, 2018, we performed a qualitative analysis of our goodwill and indefinite-lived intangible assets and noted no indicators of impairment. Through that analysis, we determined that it is not likely that the carrying value of goodwill and indefinite-lived intangible assets exceeded their respective fair values. As of December 31, 2018 and 2017, the carrying amount of goodwill was $659.6 million and $630.2 million, respectively. We paid $19.1 million in cash to Premier Parks, LLC for the five new parks, which reflects the $23.0 million purchase price, less net working capital and other adjustments. We recorded $29.4 million of goodwill in connection with the acquisition, which is attributable to the excess of the purchase price over the net working capital liabilities we assumed. 

As of December 31, 2018 and 2017, intangible assets, net consisted of the following:

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Notes to Consolidated Financial Statements

	As of December 31, 2018
(Amounts in thousands, except years)	Weighted-Average Remaining Amortization Period (Years)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Indefinite-lived intangible assets:
Trade names, trademarks and other		$	344,075	$	—		$	344,075
Finite-lived intangible assets:
Third party licensing rights	1.5	24,361		(20,821		)	3,540
Other	42.9	1,726		(312		)	1,414
Total intangible assets, net		$	370,162	$	(21,133	)	$	349,029

	As of December 31, 2017
(Amounts in thousands, except years)	Weighted-Average Remaining Amortization Period (Years)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Indefinite-lived intangible assets:
Trade names, trademarks and other		$	344,075	$	—		$	344,075
Finite-lived intangible assets:
Third party licensing rights	2.5	24,361		(18,419		)	5,942
Other	30.0	2,735		(1,165		)	1,570
Total intangible assets, net		$	371,171	$	(19,584	)	$	351,587

Amortization expense related to finite-lived intangible assets totaled $2.4 million, $2.5 million and 2.6 million for the years ended December 31, 2018, 2017 and 2016. respectively. We expect that amortization expense on our existing intangible assets subject to amortization for the succeeding five years and thereafter will approximate the following:

(Amounts in thousands)
For the year ending December 31:
2019	$	2,437
2020	1,048
2021	57
2022	57
2023	57
2024 and thereafter	1,298
	$	4,954

6. Noncontrolling Interests, Partnerships and Joint Ventures

Redeemable Noncontrolling Interests

Redeemable noncontrolling interests represent the non-affiliated parties' share of the assets of the Partnership Parks that are less than wholly-owned: SFOT, SFOG and Six Flags White Water Atlanta, which is owned by the partnership that owns SFOG.

The following table presents a rollforward of redeemable noncontrolling interests in the Partnership Parks:

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Notes to Consolidated Financial Statements

(Amounts in thousands)	SFOT			SFOG			Total
Balance at December 31, 2016	$	227,620		$	258,256		$	485,876
Fresh start accounting fair market value adjustment for purchased units	(32		)	—			(32		)
Purchases of redeemable units of SFOT	(128		)	—			(128		)
Change in redemption value of partnership units	133			8,582			8,715
Net income attributable to noncontrolling interests	19,701			19,509			39,210
Distributions to noncontrolling interests	(19,701		)	(19,509		)	(39,210		)
Balance at December 31, 2017	227,593			266,838			494,431
Fresh start accounting fair market value adjustment for purchased units	(80		)	—			(80		)
Purchases of redeemable units of SFOT	(353		)	—			(353		)
Change in redemption value of partnership units	16,596			14,677			31,273
Net income attributable to noncontrolling interests	20,086			19,921			40,007
Distributions to noncontrolling interests	(20,086		)	(19,921		)	(40,007		)
Balance at December 31, 2018	$	243,756		$	281,515		$	525,271

See Note 14 for a description of the partnership arrangements applicable to the Partnership Parks, the accounts of which are included in the accompanying consolidated financial statements. As of December 31, 2018, the redemption value of the noncontrolling partnership units in SFOT and SFOG equaled the carrying values.

7. Long-Term Indebtedness

Credit Facility

On December 20, 2011, we entered into a $1,135.0 million credit agreement (the "2011 Credit Facility") with several lenders including Wells Fargo Bank National Association, as administrative agent, and related loan and security documentation agents. The 2011 Credit Facility was comprised of a 5-year $200.0 million revolving credit loan facility (the "Revolving Loan"), a 5-year $75.0 million Tranche A Term Loan facility ("Term Loan A") and a 7-year $860.0 million Tranche B Term Loan facility ("Term Loan B" and together with the Term Loan A, the "Term Loans"). In certain circumstances, the Term Loan B could be increased by $300.0 million. The proceeds from the $935.0 million Term Loans were used, along with $15.0 million of existing cash, to retire the $950.0 million senior term loan from the prior facility. Interest on the 2011 Credit Facility accrued based on pricing rates corresponding with the senior secured leverage ratios of Six Flags Theme Parks Inc. ("SFTP") as set forth in the credit agreement.

On December 21, 2012, we entered into an amendment to the 2011 Credit Facility (the "2012 Credit Facility Amendment") that among other things, permitted us to (i) issue $800.0 million of senior unsecured notes (see 2021 Notes below), (ii) use $350.0 million of the proceeds of the senior unsecured notes to repay the $72.2 million that was outstanding under the Term Loan A and $277.8 million of the outstanding balance of the Term Loan B, (iii) use the remaining $450.0 million of proceeds for share repurchases and other corporate matters and (iv) reduce the interest rate payable on the Term Loan B by 25 basis points.

On December 23, 2013, we entered into an amendment to the 2011 Credit Facility (the "2013 Credit Facility Amendment") that reduced the overall borrowing rate on the Term Loan B by 50 basis points through (i) a 25 basis point reduction in the applicable margin from LIBOR plus 3.00% to LIBOR plus 2.75% and (ii) a 25 basis point reduction in the minimum LIBOR rate from 1.00% to 0.75%. Additionally, the 2013 Credit Facility Amendment permitted us to use up to $200.0 million of our excess cash on hand, over time, for general corporate purposes, including potential share repurchases.

On June 30, 2015, we amended and restated the 2011 Credit Facility (as amended by the 2012 Credit Facility Amendment and the 2013 Credit Facility Amendment, the "Amended and Restated Credit Facility"). The Amended and Restated Credit Facility is comprised of a $250.0 million revolving credit loan facility (the "Amended and Restated Revolving Loan") and a $700.0 million Tranche B Term Loan facility (the "Amended and Restated Term Loan B"). Additionally, the Amended and Restated Credit Facility increased the additional flexibility under the Amended and Restated Term Loan B to $350.0 million. In connection with entering into the Amended and Restated Credit Facility, we repaid the outstanding Term Loan B. The remaining proceeds from the Amended and Restated Credit Facility were used for share repurchases and payment of refinancing fees.

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Notes to Consolidated Financial Statements

On June 16, 2016, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.75% to LIBOR plus 2.50%. We capitalized $1.0 million of debt issuance costs directly associated with the issuance of this amendment. Additionally, we used $150.0 million of the proceeds from the issuance of the 2024 Notes discussed below to reduce our borrowings under the Amended and Restated Term Loan B and recognized a loss on debt extinguishment of $2.4 million. The paydown of borrowings under the Amended and Restated Term Loan B eliminated any required quarterly amortization payments thereunder until its final maturity on June 30, 2022.

On December 20, 2016, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.50% to LIBOR plus 2.25%, with the elimination of the minimum LIBOR rate requirement. We capitalized a nominal amount of debt issuance costs directly associated with the issuance of this amendment and recognized a loss on debt extinguishment of $0.5 million.

On June 21, 2017, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.25% to LIBOR plus 2.00%. We capitalized $0.5 million of debt issuance costs directly associated with the issuance of this amendment and recognized a loss on debt extinguishment of 0.2 million.

On March 26, 2018, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.00% to LIBOR plus 1.75%. We capitalized $0.5 million of debt issuance costs directly associated with the issuance of this amendment.

On April 18, 2018, we entered into an amendment to the Amended and Restated Credit Facility that increased our Amended and Restated Term Loan B borrowings by $39.0 million. We capitalized $0.3 million of debt issuance costs directly associated with the issuance of this amendment. The proceeds of the additional borrowings were used for general corporate purposes, including share repurchases.

As of December 31, 2018, $43.0 million under the Amended and Restated Revolving Loan was outstanding (excluding amounts reserved for letters of credit in the amount of $18.1 million). As of December 31, 2017, no amounts under the Amended and Restated Revolving Loan were outstanding (excluding amounts reserved for letters of credit in the amount of $18.7 million). Interest on the Amended and Restated Revolving Loan accrues at an annual rate of LIBOR plus an applicable margin with an unused commitment fee based on our senior secured leverage ratio. As of December 31, 2018 and 2017, the Amended and Restated Revolving Loan unused commitment fee was 0.375%. The principal amount of the Amended and Restated Revolving Loan is due and payable on June 30, 2020.

As of December 31, 2018 and 2017, $583.8 million and $544.8 million, respectively, was outstanding under the Amended and Restated Term Loan B. Interest on the Amended and Restated Term Loan B accrues at an annual rate of LIBOR plus an applicable margin, based on our consolidated leverage ratio. In April 2014, we entered into the Interest Rate Swap Agreements with a notional amount of $200.0 million to mitigate the risk of an increase in the LIBOR interest rate above the 0.75% minimum LIBOR rate in effect on the Term Loan B. The Interest Rate Swap Agreements continued to mitigate an increase in the LIBOR rate in effect on the Amended and Restated Term Loan B through December 2017. As of December 31, 2018 and 2017, the applicable interest rate on the Amended and Restated Term Loan B was 4.26% and 3.36%, respectively. Beginning on September 30, 2015, the Amended and Restated Term Loan B became payable in equal quarterly installments of $1.8 million, but the $150.0 million prepayment with proceeds from the 2024 Notes discussed below was applied to the quarterly amortization payments and eliminated the future quarterly amortization payments until maturity. All remaining outstanding principal of the Amended and Restated Term Loan B is due and payable on June 30, 2022.

Amounts outstanding under the Amended and Restated Credit Facility are guaranteed by Holdings, Six Flags Operations Inc. ("SFO") and certain of the domestic subsidiaries of SFTP (collectively, the "Loan Parties"). The Amended and Restated Credit Facility is secured by a first priority security interest in substantially all of the assets of the Loan Parties. The Amended and Restated Credit Facility agreement contains certain representations, warranties, affirmative covenants and financial covenants (specifically, (i) a minimum interest coverage covenant and (ii) a maximum senior leverage maintenance covenant). In addition, the Amended and Restated Credit Facility agreement contains restrictive covenants that, subject to certain exceptions, limit or restrict, among other things, the incurrence of indebtedness and liens, fundamental changes, restricted payments, capital expenditures, investments, prepayments of certain indebtedness, transactions with affiliates, changes in fiscal periods, modifications of certain documents, activities of the Company and SFO and hedging agreements, subject, in each case, to certain carve-outs.

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Notes to Consolidated Financial Statements

2021 Notes, 2024 Notes and 2027 Notes

On December 21, 2012, Holdings issued $800.0 million of 5.25% senior unsecured notes due January 15, 2021 (the "2021 Notes"). The proceeds from the 2021 Notes were used to repay the $72.2 million that was outstanding under the Term Loan A and to repay $277.8 million of the outstanding balance of the Term Loan B. The remaining proceeds were used for share repurchases. Interest payments of $21.0 million were due semi-annually on January 15 and July 15 (except in 2013 when we only made one interest payment of $22.3 million on July 15).

On June 16, 2016, Holdings issued $300.0 million of 4.875% senior unsecured notes due July 31, 2024 (the "2024 Notes"). We capitalized $4.7 million of debt issuance costs directly associated with the issuance of the 2024 Notes. We used approximately $150.0 million of the proceeds from the issuance of the 2024 Notes to reduce our borrowings under the Amended and Restated Term Loan B. We used the remaining net proceeds of the sale of the 2024 Notes for general corporate and working capital purposes, which primarily included repurchases of our common stock.

On April 13, 2017, we issued an additional $700.0 million of 4.875% Senior Notes due July 31, 2024 (the "2024 Notes Add-on"). We capitalized $3.9 million of debt issuance costs directly associated with the issuance of the 2024 Notes Add-on. Interest payments of $24.4 million for the 2024 Notes and the 2024 Notes Add-on are due semi-annually on January 31 and July 31 of each year, with the exception of the first payment for the 2024 Notes on January 31, 2017, which was $9.1 million.

On April 13, 2017, we issued $500.0 million of 5.500% Senior Notes due April 15, 2027 (the "2027 Notes"). We capitalized $2.6 million of debt issuance costs directly associated with the issuance of the 2027 Notes. Interest payments of $13.8 million are due semi-annually on April 15 and October 15 of each year, with the exception of the first payment on October 15, 2017, which was $13.9 million.

A portion of the net proceeds from the issuance of the 2024 Notes Add-on and 2027 Notes was used to redeem all of the outstanding 2021 Notes and to satisfy and discharge the indenture governing the 2021 Notes, including to pay the accrued and unpaid interest to the redemption date, the related redemption premium on the 2021 Notes, and related fees and expenses. The remaining net proceeds were used for general corporate and working capital purposes, which primarily included repurchases of our common stock. In connection with the redemption of all of the outstanding 2021 Notes, in the second quarter of 2017 we recognized a loss on debt extinguishment of $36.9 million.

The 2024 Notes, the 2024 Notes Add-on and the 2027 Notes are guaranteed by the Loan Parties. The 2024 Notes, the 2024 Notes Add-on and the 2027 Notes contain restrictive covenants that, subject to certain exceptions, limit or restrict, among other things, the ability of the Loan Parties to incur additional indebtedness, create liens, engage in mergers, consolidations and other fundamental changes, make investments, engage in transactions with affiliates, pay dividends and repurchase capital stock. The 2024 Notes, the 2024 Notes Add-on and the 2027 Notes contain certain events of default, including payment defaults, breaches of covenants and representations, cross defaults to other material indebtedness, judgment, and changes of control and bankruptcy events of default.

Total Indebtedness Summary

As of December 31, 2018 and 2017, total debt consisted of the following:

	December 31,
(Amounts in thousands)	2018			2017
Amended and Restated Term Loan B	$	583,750		$	544,750
2027 Notes	500,000			500,000
2024 Notes	1,000,000			1,000,000
Amended and Restated Revolving Loan	43,000			—
Net discount	(6,792		)	(8,137		)
Deferred financing costs	(13,446		)	(15,435		)
Total debt	2,106,512			2,021,178
Less current portion	43,000			—
Total long-term debt	$	2,063,512		$	2,021,178

As of December 31, 2018, annual maturities of long-term debt, assuming no acceleration of maturities, were as follows:

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Notes to Consolidated Financial Statements

(Amounts in thousands)
For the year ending December 31:
2019	$	—
2020	43,000
2021	—
2022	583,750
2023	—
2024 and thereafter	1,500,000
	$	2,126,750

Fair-Value of Long-Term Indebtedness

As of December 31, 2018 and December 31, 2017, the fair value of our long-term debt was $2,012.4 million and $2,057.1 million, respectively. The measurement of the fair value of long-term debt is based on market prices that are generally observable for similar liabilities at commonly quoted intervals and is considered a Level 2 fair value measurement.

8. Selling, General and Administrative Expenses

Selling, general and administrative expenses comprised the following for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands)	2018		2017		2016
Park	$	129,335	$	129,090	$	124,019
Corporate	2,833		29,980		168,986
Total selling, general and administrative expenses	$	132,168	$	159,070	$	293,005

Corporate, selling, general and administrative expense includes a reversal of stock-based compensation expense of $46.7 million and $22.7 million for the years ended December 31, 2018 and 2017, respectively, and stock-based compensation expense of $116.3 million for the year ended December 31, 2016.

9. Stock Benefit Plans

Pursuant to the Long-Term Incentive Plan, Holdings may grant stock options, stock appreciation rights, restricted stock, restricted stock units, unrestricted stock, deferred stock units, performance and cash-settled awards and dividend equivalents to select employees, officers, directors and consultants of Holdings and its affiliates. In May 2017, our stockholders approved amendments to the Long-Term Incentive Plan that increased the number of shares available for issuance under the Long-Term Incentive Plan by 4,000,000 shares.

During the years ended December 31, 2018, 2017, and 2016 we recognized stock-based compensation expense related to the Long-Term Incentive Plan, excluding of amounts related to our 2017 Performance Award, of $15.5 million, $16.9 million and $13.6 million, respectively.

As of December 31, 2018, options to purchase approximately 5,380,000 shares of common stock of Holdings and approximately 16,000 shares of restricted stock or restricted stock units were outstanding under the Long-Term Incentive Plan and approximately 5,086,000 shares were available for future grant.

Stock Options

Options granted under the Long-Term Incentive Plan are designated as either incentive stock options or non-qualified stock options. Options are generally granted with an exercise price equal to the fair market value of the common stock of Holdings on the date of grant. While certain stock options are subject to acceleration in connection with a change in control, options are generally cumulatively exercisable in four equal annual installments commencing one year after the date of grant with a ten-year term. Generally, the unvested portion of stock option awards is forfeited upon termination of employment. Stock option compensation is recognized over the vesting period using the graded vesting terms of the respective grant.

The estimated fair value of the majority of our options granted was calculated using the Black-Scholes option pricing valuation model. This model takes into account several factors and assumptions. The risk-free interest rate is based on the yield

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Notes to Consolidated Financial Statements

on United States Treasury zero-coupon issues with a remaining term equal to the expected term assumption at the time of grant. We have sufficient historical data to develop an expected term assumption and we calculated the expected term using a mid-point scenario with a one-year grant date filter to exclude grants for which vesting could not have yet occurred. Expected volatility is based three-fourths on the term-matching historical volatility of our stock and one-fourth on the weighted-average implied volatility based on forward-looking pricing data on exchange-traded options for our stock. The expected dividend yield is based on our current quarterly dividend and a three-month average stock price. The fair value of stock options on the date of grant is expensed on a straight line basis over the requisite service period of the graded vesting term as if the award was, in substance, multiple awards.

The following weighted-average assumptions were utilized in the Black-Scholes model to value the stock options granted during the years ended December 31, 2018, 2017 and 2016:

	December 31, 2018				December 31, 2017				December 31, 2016
	CEO		Employees		CEO		Employees		CEO		Employees
Risk-free interest rate	2.52	%	2.67	%	1.64	%	1.56	%	1.05	%	1.00	%
Expected life (in years)	3.85		3.68		3.85		3.85		3.85		3.85
Expected volatility	23.20	%	22.51	%	21.89	%	22.70	%	24.30	%	23.17	%
Expected dividend yield	4.67	%	4.54	%	4.22	%	4.42	%	4.47	%	4.15	%

The following table summarizes stock option activity for the year ended December 31, 2018:

(Amounts in thousands, expect per share data)	Shares		Weighted Avg. Exercise Price ($)		Weighted Avg. Remaining Contractual Term	Aggregate Intrinsic Value ($)
Balance at December 31, 2017	5,185		$	43.78
Granted	1,451		$	65.71
Exercised	(1,094	)	$	38.08
Canceled or exchanged	(4	)	$	44.39
Forfeited	(158	)	$	52.46
Expired	—		$	—
Balance at December 31, 2018	5,380		$	50.60	7.47	$	43,141
Vested and expected to vest at December 31, 2018	5,140		$	50.16	7.40	$	42,780
Options exercisable at December 31, 2018	2,035		$	37.88	5.51	$	36,413

The following table presents the weighted average grant date fair value per share of the options granted, the total intrinsic value of options exercised, the total fair value of options that have vested, and the total cash received from the exercise of stock options during the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands, expect per share data)	2018		2017		2016
Weighted average grant date fair value of options granted	$	8.01	$	6.26	$	5.84
Total intrinsic value of options exercised	$	31,822	$	52,955	$	37,847
Total fair value of options that have vested	$	8,446	$	8,436	$	10,701
Total cash received from the exercise of stock options	$	41,658	$	60,583	$	34,680

As of December 31, 2018, there was $13.5 million of unrecognized compensation expense related to option awards. The weighted-average period over which that cost is expected to be recognized is 3.12 years.

Stock, Restricted Stock and Restricted Stock Units

Stock, restricted stock and restricted stock units granted under the Long-Term Incentive Plan may be subject to transfer and other restrictions as determined by the compensation committee of Holdings' Board of Directors. Generally, the unvested portion of restricted stock and restricted stock unit awards is forfeited upon termination of employment. The fair value of stock, restricted stock and restricted stock unit awards on the date of grant is expensed on a straight line basis over the requisite service period of the graded vesting term as if the award was, in substance, multiple awards.

During the year ended December 31, 2014, a performance award was established based on our goal to achieve Modified EBITDA of $600 million by 2017 (the "2017 Performance Award"). "Modified EBITDA” is defined as the Company’s consolidated income from continuing operations: excluding the cumulative effect of changes in accounting principles; discontinued operations gains or losses; income tax expense or benefit; restructure costs or recoveries; reorganization items

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Notes to Consolidated Financial Statements

(net); other income or expense; gain or loss on early extinguishment of debt; equity in income or loss of investees; interest expense (net); gain or loss on disposal of assets; gain or loss on the sale of investees; amortization; depreciation; stock-based compensation; and fresh start accounting valuation adjustments. As of December 31, 2018, we did not reach late achievement of the 2017 Performance Award goal and thus all previously recognized stock-based compensation associated with this award was reversed.

During the year ended December 31, 2016, an additional performance award was established based on our aspirational goal to achieve Modified EBITDA of $750 million by 2020 (the "2020 Performance Award"). The aggregate payout under the performance award to key employees if the target is achieved in 2020 would be 1,025,000 shares plus associated DERs but could be more or less depending on the level of achievement and the timing thereof. There has been no stock-based compensation expense recorded for this performance award because it is not deemed probable that we will achieve the specified performance targets as of December 31, 2018. Based on the closing market price of Holdings' common stock on the last trading day of the quarter ended December 31, 2018, the total unrecognized compensation expense related to this award at target achievement in 2020 is $63.2 million that will be expensed over the service period if it becomes probable of achieving the performance condition. The required growth rate, combined with the uncertainty of the timing of our international agreements revenue over the next few years has led us to revisit our medium-term outlook and conclude that on time achievement of the 2020 Performance Award is highly unlikely. We are now striving for late achievement of the target in 2021, with modest growth likely in 2019 and accelerating thereafter. We will continue to evaluate the probability of achieving the performance condition going forward and record the appropriate expense if necessary

The following table summarizes stock, restricted stock and restricted stock unit activity for the year ended December 31, 2018:

(Amounts in thousands, except per share amounts)	Shares		Weighted Average Grant Date Fair Value Per Share ($)
Non-vested balance at December 31, 2017	12		$	61.74
Granted	65		$	63.80
Vested	(61	)	$	63.42
Forfeited	—		$	—
Canceled	—		$	—
Non-vested balance at December 31, 2018	16		$	63.69

The following table presents the weighted average grant date fair value per share of stock awards granted, the total grant date fair value of stock awards granted, and the total fair value of stock awards that have vested during the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands, expect per share data)	2018		2017		2016
Weighted average grant date fair value of stock awards granted	$	63.80	$	61.74	$	51.46
Total grant date fair value of stock awards granted	$	4,185	$	750	$	68,207
Total fair value of stock awards that have vested	$	3,888	$	560	$	68,341

There was $0.3 million of total unrecognized stock-based compensation expense related to stock, restricted stock and restricted stock units as of December 31, 2018 that is expected to be recognized over a weighted-average period of 0.33 years.

Deferred Share Units

Non-employee directors can elect to receive the value of their annual cash retainer as a deferred share unit award ("DSU") under the Long-Term Incentive Plan whereby the non-employee director is granted DSUs in an amount equal to such director's annual cash retainer divided by the closing price of Holdings' common stock on the date of the annual stockholders meeting. Each DSU represents Holdings' obligation to issue one share of common stock. The shares are delivered approximately thirty days following the cessation of the non-employee director's service as a director of Holdings'.

DSUs generally vest consistent with the manner in which non-employee directors' cash retainers are paid. The fair value of the DSUs on the date of grant is expensed on a straight line basis over the requisite service period.

During each of the years ended December 31, 2018, 2017 and 2016, approximately 3,000 DSUs were granted at a weighted-average grant date fair value of $57.04, $56.32 and $54.16 per DSU, respectively. The total grant date fair value of DSUs granted was $0.2 million for the years ended December 31, 2018, 2017 and 2016.

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

As of December 31, 2018, there was no unrecognized compensation expense related to the outstanding DSUs.

Dividend Equivalent Rights

On February 8, 2012, Holdings' Board of Directors granted DERs to holders of unvested stock options, at which time, approximately 10.0 million unvested stock options were outstanding. The DERs accrue dividends as of the record date of each of Holdings' dividends that will be distributed to stock option holders upon the vesting of their stock option award. Holdings will distribute the accumulated accrued dividends pursuant to the DERs in either cash or shares of common stock. Generally, holders of stock options for fewer than 1,000 shares of stock will receive their accumulated accrued dividends in cash and holders of stock options for 1,000 shares of stock or greater will receive their accumulated accrued dividends in shares of common stock. In addition, Holdings' Board of Directors granted similar DERs payable in shares of common stock if and when any shares are granted under the 2020 Performance Award.

Holdings' Board of Directors granted approximately 1.5 million, 1.9 million and 1.3 million additional options to the majority of our full-time employees as well as DERs in connection with such options during the years ended December 31, 2018, 2017 and 2016, respectively. Exclusive of stock-based compensation recognized for the DER grants associated with the 2017 Performance Award discussed above, we recorded stock-based compensation for DER grants of $5.9 million, $4.2 million and $5.1 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Employee Stock Purchase Plan

The Six Flags Entertainment Corporation Employee Stock Purchase Plan (the "ESPP") allows eligible employees to purchase Holdings' common stock at 90% of the lower of the market value of the common stock at the beginning or end of each successive six-month offering period. Amounts accumulated through participants' payroll deductions ("purchase rights") are used to purchase shares of common stock at the end of each purchase period. Pursuant to the ESPP, no more than 2,000,000 shares of common stock of Holdings may be issued. Holdings' common stock may be issued by either authorized and unissued shares, treasury shares or shares purchased on the open market. As of December 31, 2018, we had 1,702,000 shares available for purchase pursuant to the ESPP.

In accordance with FASB ASC Topic 718, Stock Based Compensation, stock-based compensation related to purchase rights is recognized based on the intrinsic value of each respective six-month ESPP offering period. As of December 31, 2018 and 2017, no purchase rights were outstanding under the ESPP.

Stock-based compensation consisted of the following amounts for the years ended December 31, 2018, 2017 and 2016. We present separately the reversal of previously recorded stock-based compensation related to the 2017 Performance Award from our Long-Term Incentive Plan and Employee Stock Purchase Plan.

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Long-Term Incentive Plan
Options and Other	$	15,543		$	16,910		$	13,581
2017 Performance Award	(62,512		)	(39,935		)	102,447
Employee Stock Purchase Plan	285			328			311
Total stock-based compensation	$	(46,684	)	$	(22,697	)	$	116,339

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

10. Income Taxes

The following table summarizes the domestic and foreign components of our income before income taxes for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands)	2018		2017		2016
Domestic	$	383,875	$	301,322	$	216,205
Foreign	27,983		27,730		17,061
Income before income taxes	$	411,858	$	329,052	$	233,266

The following table summarizes the components of income tax expense (benefit) for the years ended December 31, 2018, 2017 and 2016:

(Amounts in thousands)	Current			Deferred			Total
2018:
U.S. federal	$	(58	)	$	65,976		$	65,918
Foreign	11,752			626			12,378
State and local	11,268			6,291			17,559
Income tax expense	$	22,962		$	72,893		$	95,855
2017:
U.S. federal	$	(72	)	$	(6,774	)	$	(6,846	)
Foreign	11,840			(2,231		)	9,609
State and local	5,829			7,434			13,263
Income tax expense (benefit)	$	17,597		$	(1,571	)	$	16,026
2016:
U.S. federal	$	(41	)	$	57,950		$	57,909
Foreign	6,206			(427		)	5,779
State and local	7,088			5,763			12,851
Income tax expense	$	13,253		$	63,286		$	76,539

Recorded income tax expense differed from amounts computed by applying the U.S. federal income tax rate of 21% for the year ended December 31, 2018 and 35% for the years ended December, 31, 2017 and 2016 to income before income taxes as a result of the following:

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Computed "expected" federal income tax expense	$	86,490		$	115,168		$	81,643
Effect of noncontrolling interest income distribution	(8,401		)	(13,724		)	(13,449		)
Change in valuation allowance	1,663			413			648
Effect of state and local income taxes, net of federal tax benefit	12,980			10,767			8,353
Deductible compensation in excess of book	(5,392		)	(13,757		)	—
Nondeductible compensation	1,167			2,201			2,127
Effect of foreign income taxes	4,544			2,367			380
Effect of foreign earnings earned and remitted in the same year	2,317			4,402			6,000
Effect of foreign tax credits	(996		)	(5,357		)	(9,405		)
Effect of Tax Reform, including change in valuation allowance of $20,824	—			(84,599		)	—
Other, net	1,483			(1,855		)	242
Income tax expense	$	95,855		$	16,026		$	76,539

In connection with emergence from Chapter 11, the Company's prepetition debt securities, primarily the prepetition notes issued by Six Flags, Inc. (which changed its corporate name to Six Flags Entertainment Corporation (Holdings) upon emergence from bankruptcy in 2010) and SFO, were extinguished. Absent an exception, a debtor recognizes cancellation of debt income ("CODI") upon discharge of its outstanding indebtedness for an amount of consideration that is less than its adjusted issue price. The Internal Revenue Code ("IRC") provides that a debtor in a bankruptcy case may exclude CODI from income but must reduce certain of its tax attributes by the amount of any CODI realized as a result of the consummation of a plan of reorganization. The amount of CODI realized by a taxpayer is the adjusted issue price of any indebtedness discharged less the sum of (i) the amount of cash paid, (ii) the issue price of any new indebtedness issued and (iii) the fair market value of any other consideration, including equity, issued. As a result of the market value of our equity upon emergence from Chapter 11 bankruptcy proceedings, we were able to retain a significant portion of our federal NOLs and state NOLs (collectively, the "Tax

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Notes to Consolidated Financial Statements

Attributes") after reduction of the Tax Attributes for CODI realized on emergence from Chapter 11. As a result of emergence from Chapter 11, the Company's NOLs were reduced by approximately $804.8 million of CODI.

Sections 382 and 383 of the IRC impose an annual limitation on the utilization of NOLs and other favorable Tax Attribute carryforwards that a corporation has at the time of a so-called "ownership change" within the meaning of IRC Section 382. The Company's issuance of stock pursuant to its reorganization under Chapter 11 resulted in such an ownership change. The limitation amount is the product of the value of the Company, computed under special rules that apply to a bankruptcy reorganization, and a published rate that applied for the month the Company emerged from Chapter 11. The Company's limitation amount is approximately $32.5 million for each year to which NOLs and other Tax Attribute carryforwards that existed at emergence are carried, increased by the portion of the net built-in income and gain that existed at emergence and that IRS pronouncements permit a taxpayer to treat as recognized during the five-year period following the ownership change. This has allowed the Company to increase its annual limitation by approximately $696.0 million through the end of 2015. Annual limitation amounts accumulate for future use to the extent they are not utilized in a given year. As a result of the Section 382 limitation, the Company may have a cash tax liability in future years even though its deferred tax assets have not been exhausted. A subsequent ownership change could further limit the Company's utilization of NOLs and other Tax Attributes if a smaller limitation resulted from the subsequent ownership change or applied to NOLs and other Tax Attributes accumulated after emergence from Chapter 11.

Substantially all of our future taxable temporary differences (deferred tax liabilities) relate to the different financial accounting and tax depreciation methods and periods for property and equipment (20 to 25 years for financial reporting purposes and 7 to 12 years for tax reporting purposes) and intangibles. Our net operating loss carryforwards, foreign tax credits, alternative minimum tax credits, accrued insurance expenses and deferred compensation amounts represent future income tax benefits (deferred tax assets). The following table summarizes the components of deferred income tax assets and deferred tax liabilities as of December 31, 2018 and 2017:

	December 31,
(Amounts in thousands)	2018		2017
Deferred tax assets	$	233,980	$	296,132
Less: Valuation allowance	115,172		113,509
Net deferred tax assets	118,808		182,623
Deferred tax liabilities	292,806		289,474
Net deferred tax liability	$	173,998	$	106,851

	December 31,
(Amounts in thousands)	2018		2017
Deferred tax assets:
Federal net operating loss carryforwards	$	19,334	$	49,543
State net operating loss carryforwards	117,236		119,837
Deferred compensation	6,873		21,464
Foreign tax credits	39,300		52,152
Alternative minimum tax credits	6,591		6,591
Accrued insurance, pension liability and other	44,646		46,545
Total deferred tax assets	$	233,980	$	296,132
Deferred tax liabilities:
Property and equipment	$	209,070	$	200,008
Intangible assets and other	83,736		89,466
Total deferred tax liabilities	$	292,806	$	289,474

As of December 31, 2018, we had approximately $0.2 billion and $5.5 billion of net operating loss carryforwards available for U.S. federal income tax and state income tax purposes, respectively, that expire through 2030 and 2038, respectively. Foreign tax credits of $39.3 million expire between 2020 and 2027. We have a valuation allowance of $115.2 million and $113.5 million as of December 31, 2018 and 2017, respectively, due to uncertainties related to our ability to utilize some of our deferred tax assets before they expire. The valuation allowance at December 31, 2018 and December 31, 2017 was based on our inability to use state deferred tax assets related to NOLs that were generated in states where we no longer do business or where we have consistently not generated taxable income. The change in valuation allowance is all attributable to income from operations.

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

Our unrecognized tax benefit as of each of December 31, 2018 and 2017 was $25.7 million. We classify interest and penalties attributable to income taxes as part of income tax expense. Due to the Company's NOL position, we have not accrued any penalties and interest.

Passage of the Tax Cuts and Jobs Act (H.R. 1) and Staff Accounting Bulletin No. 118

On December 22, 2017, the Tax Act was signed into law. The Tax Act contains significant changes to corporate taxation, including a reduction of the corporate tax rate from 35% to 21%, creating a territorial tax system, allowing for immediate expensing of certain qualified property, modifying or repealing many business deductions and credits, and providing other incentives. In response to the Tax Act, on December 22, 2017 the SEC staff issued Staff Accounting Bulletin No. 118 ("SAB 118"), to provide guidance for companies that are not able to complete their accounting for the income tax effects of the Tax Act in the period of enactment. The SEC Staff noted in SAB 118 that in these cases a company should continue to apply Topic 740, Income Taxes based on the provisions of the tax laws that were in effect immediately prior to the enactment of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the enactment date of the Tax Act for companies to complete the accounting under Topic 740. For the year ended December 31, 2018, the Company has not identified any material changes to the net one-time charge related to its accounting for the enactment of the Act. Accordingly, the Company has finalized its accounting treatment for the Act. For global intangible low taxed income ("GILTI") under the Act, the Company has elected to account for GILTI as a component of tax expense in the period in which the Company is subject to the rules (the "period cost method").

11. Preferred Stock, Common Stock and Other Stockholders' Equity

Common Stock

As of December 31, 2018, the number of authorized shares of common stock was 140,000,000, of which 83,962,182 shares were outstanding, 5,086,000 shares were reserved for future issuance through our Long-Term Incentive Plan, and 1,702,000 shares were reserved for future issuance through the ESPP. Pursuant to the ESPP, Holdings' common stock may be issued by either authorized and unissued shares, treasury shares or shares purchased on the open market.

On November 20, 2013, Holdings' Board of Directors approved a new stock repurchase program that permitted Holdings to repurchase up to $500.0 million in shares of Holdings' common stock over a four-year period (the "November 2013 Stock Repurchase Plan"). Holdings fully utilized the availability under the November 2013 Stock Repurchase Plan by August 2016. Throughout the program, Holdings repurchased 11,428,000 shares at a cumulative cost of approximately $500.0 million and an average price per share of $43.75.

On June 7, 2016, Holdings announced that its Board of Directors approved a new stock repurchase program that permitted Holdings to repurchase an incremental $500.0 million in shares of Holdings' common stock (the "June 2016 Stock Repurchase Plan"). Holdings fully utilized the availability under the June 2016 Stock Repurchase Plan by May 2017. Throughout the program, Holdings repurchased 8,392,000 shares at a cumulative cost of approximately $500.0 million and an average price per share of $59.58.

On March 30, 2017, Holdings announced that its Board of Directors approved a new stock repurchase plan that permits Holdings to repurchase an incremental $500.0 million in shares of Holdings' common stock (the "March 2017 Stock Repurchase Plan"). As of February 14, 2019, Holdings had repurchased 4,603,000 shares at a cumulative cost of approximately $268.2 million and an average price per share of $58.27 under the March 2017 Stock Repurchase Plan, leaving approximately $231.8 million available for permitted repurchases.

During the years ended December 31, 2018, 2017 and 2016, Holdings' Board of Directors declared and paid quarterly cash dividends per share of common stock as follows:

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

	Dividends Paid Per Share
2018:
Fourth Quarter	$	0.82
Third Quarter	$	0.78
Second Quarter	$	0.78
First Quarter	$	0.78
2017:
Fourth Quarter	$	0.70
Third Quarter	$	0.64
Second Quarter	$	0.64
First Quarter	$	0.64
2016:
Fourth Quarter	$	0.64
Third Quarter	$	0.58
Second Quarter	$	0.58
First Quarter	$	0.58

Preferred Stock

As of December 31, 2018, the number of authorized shares of preferred stock was 5,000,000, none of which have been issued or reserved for future issuance. The authorization of preferred shares empowers Holdings' Board of Directors, without further stockholder approval, to issue preferred shares with dividend, liquidation, conversion, voting or other rights which could adversely affect the voting power or other rights of the holders of Holdings' common stock. If issued, the preferred stock could also dilute the holders of Holdings' common stock and could be used to discourage, delay or prevent a change of control.

Accumulated Other Comprehensive (Loss) Income

The balances for each component of accumulated other comprehensive (loss) income are as follows:

	Currency Translation Adjustment			Cash Flow Hedges			Defined Benefit Plans			Income Taxes			Accumulated Other Comprehensive Income (Loss)
Balance as of December 31, 2015	$	(24,800	)	$	(1,598	)	$	(49,772	)	$	9,612		$	(66,558	)
Net current period change	(7,142		)	(944		)	4,881			965			(2,240		)
Amounts reclassified from AOCI	—			1,716			931			(1,033		)	1,614
Balance as of December 31, 2016	$	(31,942	)	$	(826	)	$	(43,960	)	$	9,544		$	(67,184	)
Net current period change	3,120			57			1,136			(2,106		)	2,207
Amounts reclassified from AOCI	—			769			865			(538		)	1,096
Balance as of December 31, 2017	$	(28,822	)	$	—		$	(41,959	)	$	6,900		$	(63,881	)
Net current period change	1,470			—			167			(351		)	1,286
Amounts reclassified from AOCI	—			—			721			(185		)	536
Effects of adoption of ASU 2018-02	—			—			—			(9,439		)	(9,439		)
Balance as of December 31, 2018	$	(27,352	)	$	—		$	(41,071	)	$	(3,075	)	$	(71,498	)

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

The Company had the following reclassifications out of accumulated other comprehensive income (loss) during the years ended December 31, 2018, 2017 and 2016:

	Location of	Amount of Reclassification from AOCI
	Reclassification	Year Ended December 31,
Component of AOCI	into Income	2018			2017			2016
		(Amounts in thousands)
Amortization of loss on interest rate hedge	Interest expense	$	—		$	769		$	1,716
	Income tax benefit	—			(279		)	(669		)
	Net of tax	$	—		$	490		$	1,047
Amortization of deferred actuarial loss and prior service cost	Operating expenses	$	721		$	865		$	931
	Income tax benefit	(185		)	(259		)	(364		)
	Net of tax	$	536		$	606		$	567
Total reclassifications		$	536		$	1,096		$	1,614

12. Pension Benefits

As part of the acquisition of Former SFEC, we assumed the obligations related to the SFTP Defined Benefit Plan (the "SFTP Benefit Plan"). The SFTP Benefit Plan covered substantially all of SFTP's employees. During 1999, the SFTP Benefit Plan was amended to cover substantially all of our domestic full-time employees. During 2004, the SFTP Benefit Plan was further amended to cover certain seasonal workers, retroactive to January 1, 2003. The SFTP Benefit Plan permits normal retirement at age 65, with early retirement at ages 55 through 64 upon attainment of 10 years of credited service. The early retirement benefit is reduced for benefits commencing before age 62. Plan benefits are calculated according to a benefit formula based on age, average compensation over the highest consecutive five-year period during the employee's last ten years of employment and years of service. The SFTP Benefit Plan assets are invested primarily in equity and fixed income securities, as well as alternative investments, such as hedge funds. The SFTP Benefit Plan does not have significant liabilities other than benefit obligations. Under our funding policy, contributions to the SFTP Benefit Plan are determined using the projected unit credit cost method. This funding policy meets the requirements under the Employee Retirement Income Security Act of 1974.

We froze our pension plan effective March 31, 2006, pursuant to which most participants no longer earned future pension benefits. Effective February 16, 2009, the remaining participants in the pension plan no longer earned future benefits.

Obligations and Funded Status

The following table sets forth the change in our benefit plan obligation and fair value of plan assets:

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Change in benefit obligation:
Beginning balance	$	218,746		$	216,571		$	223,389
Interest cost	7,386			8,283			8,901
Actuarial loss (gain)	(16,324		)	11,402			(828		)
Benefits paid	(8,056		)	(17,510		)	(14,891		)
Benefit obligation at end of period	$	201,752		$	218,746		$	216,571
Change in fair value of plan assets:
Beginning balance	$	190,534		$	178,375		$	173,123
Actual return on assets	(2,497		)	25,240			15,949
Employer contributions	6,000			6,000			6,000
Administrative fees	(1,223		)	(1,571		)	(1,806		)
Benefits paid	(8,056		)	(17,510		)	(14,891		)
Fair value of plan assets at end of period	$	184,758		$	190,534		$	178,375

Employer contributions and benefits paid in the above table include only those amounts contributed directly to, or paid directly from, plan assets. As of December 31, 2018 and 2017, the SFTP Benefit Plan's projected benefit obligation exceeded the fair value of SFTP Benefit Plan assets resulting in the SFTP Benefit Plan being underfunded by $17.0 million and $28.2 million, respectively. The underfunded amount is recognized in other long-term liabilities in our consolidated balance sheets.

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

Other net periodic pension benefit is disclosed within the consolidated statement of operations due to the adoption of ASU 2017-07.

We use December 31 as our measurement date. The weighted average assumptions used to determine benefit obligations are as follows:

	December 31,
	2018		2017
Discount rate	4.05	%	3.45	%
Rate of compensation increase	N/A		N/A

Net periodic benefit cost and other comprehensive income (loss)

The following table sets forth the components of net periodic benefit cost and other comprehensive income (loss):

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Net periodic benefit cost:
Service cost	$	1,300		$	1,700		$	2,400
Interest cost	7,386			8,283			8,901
Expected return on plan assets	(13,737		)	(12,831		)	(12,490		)
Amortization of net actuarial loss	721			865			931
Total net periodic benefit	$	(4,330	)	$	(1,983	)	$	(258	)
Other comprehensive income:
Current year actuarial gain	$	167		$	1,136		$	4,881
Recognized net actuarial loss	721			865			931
Total other comprehensive gain	$	888		$	2,001		$	5,812

As of December 31, 2018 and 2017, we have recorded $49.9 million (net of tax expense of $8.8 million) and $42.2 million (net of tax expense of $0.3 million) in accumulated other comprehensive loss in our consolidated balance sheets, respectively.

We anticipate that $0.8 million will be amortized from accumulated other comprehensive loss into net periodic benefit cost in 2019.

The weighted average assumptions used to determine net costs are as follows:

	Year Ended December 31,
	2018		2017		2016
Discount rate	3.45	%	3.90	%	4.10	%
Rate of compensation increase	N/A		N/A		N/A
Expected return on plan assets	7.25	%	7.25	%	7.25	%
Corridor	10.00	%	10.00	%	10.00	%
Average future life expectancy (in years)	27.77		26.33		27.79

The discount rate assumption was developed based on high-quality corporate bond yields as of the measurement date. High quality corporate bond yield indices on over 500 AA high grade bonds are considered when selecting the discount rate.

The return on plan assets assumption was developed based on consideration of historical market returns, current market conditions, and the SFTP Benefit Plan's past experience. Estimates of future market returns by asset category are reflective of actual long-term historical returns. Overall, it was projected that the SFTP Benefit Plan could achieve a 7.25% net return over time based on a consistent application of the existing asset allocation strategy and a continuation of the SFTP Benefit Plan's policy of monitoring manager performance.

Description of Investment Committee and Strategy

The Investment Committee is responsible for managing the investment of SFTP Benefit Plan assets and ensuring that the SFTP Benefit Plan's investment program is in compliance with all provisions of ERISA, other relevant legislation, related SFTP Benefit Plan documents and the Statement of Investment Policy. The Investment Committee has retained several mutual funds, commingled funds and/or investment managers to manage SFTP Benefit Plan assets and implement the investment process. The investment managers, in implementing their investment processes, have the authority and responsibility to select appropriate

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

investments in the asset classes specified by the terms of the applicable prospectus or other investment manager agreements with the SFTP Benefit Plan.

The primary financial objective of the SFTP Benefit Plan is to secure participant retirement benefits. To achieve this, the key objective in the SFTP Benefit Plan's financial management is to promote stability and, to the extent appropriate, growth in funded status. Other related and supporting financial objectives are also considered in conjunction with a comprehensive review of current and projected SFTP Benefit Plan financial requirements.

The assets of the fund are invested to achieve the greatest reward for the SFTP Benefit Plan consistent with a prudent level of risk. The asset return objective is to achieve, as a minimum over time, the passively managed return earned by market index funds, weighted in the proportions outlined by the asset class exposures in the SFTP Benefit Plan's long-term target asset allocation.

The SFTP Benefit Plan's portfolio may be allocated across several hedge fund styles and strategies.

Plan Assets

The target allocations for plan assets are 9% domestic equity securities, 64% fixed income securities, 12% international equity securities, and 15% alternative investments. Equity securities primarily include investments in large-cap companies located in the United States and abroad. Fixed income securities include bonds and debentures issued by domestic and foreign private and governmental issuers. Alternative investments are comprised of hedge fund of funds. The following table presents the categories of our plan assets and the related levels of inputs in the fair value hierarchy used to determine the fair value, as defined in Note 2(c):

	Fair Value Measurements as of December 31, 2018
(Amounts in thousands)	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
ASSET CATEGORY:
Equity Securities:
Large-Cap Disciplined Equity (a)	$	22,022	$	22,022	$	—	$	—
International Equity (b)	15,894		15,894		—		—
Fixed Income:
Long Duration Fixed Income (c)	109,408		109,408		—		—
High Yield (d)	4,965		4,965		—		—
Emerging Markets Debt (e)	4,566		4,566		—		—
Alternatives:
Other Investments (f) (g)	27,903		—		—		—
Fair Value of Plan Assets	$	184,758	$	156,855	$	—	$	—

	Fair Value Measurements as of December 31, 2017
(Amounts in thousands)	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
ASSET CATEGORY:
Equity Securities:
Large-Cap Disciplined Equity (a)	$	27,765	$	27,765	$	—	$	—
Small/Mid-Cap Equity (a)	3,433		3,433		—		—
International Equity (b)	24,383		24,383		—		—
Fixed Income:
Long Duration Fixed Income (c)	95,650		95,650		—		—
High Yield (d)	8,559		8,559		—		—
Emerging Markets Debt (e)	5,001		5,001		—		—
Alternatives:
Other Investments (f) (g)	25,743		—		—		—
Fair Value of Plan Assets	$	190,534	$	164,791	$	—	$	—

________________________________________

(a) These categories are comprised of mutual funds actively traded on the registered exchanges or over the counter markets. The mutual funds are invested in equity securities of U.S. issuers.

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

(b) This category consists of mutual funds invested primarily in equity securities (common stocks, securities that are convertible into common stocks, preferred stocks, warrants and rights to subscribe to common stocks) of non-U.S. issuers purchased in foreign markets. The mutual funds are actively traded on U.S. or foreign registered exchanges, or the over-the-counter markets.

(c) The assets are comprised of U.S. Treasury Separate Trading of Registered Interest and Principal of Securities ("U.S. Treasury STRIPS") and mutual funds which are actively traded on the registered exchanges. The mutual funds are invested primarily in high quality government and corporate fixed income securities, as well as synthetic instruments or derivatives having economic characteristics similar to fixed income securities.

(d) The high yield portion of the fixed income portfolio consists of mutual funds invested primarily in fixed income securities that are rated below investment grade. The mutual funds are actively traded on the registered exchanges.

(e) The emerging debt portion of the portfolio consists of mutual funds primarily invested in the debt securities of government, government-related and corporate issuers in emerging market countries and of entities organized to restructure outstanding debt of such issuers. The mutual funds are actively traded on the registered exchanges.

(f) This category is comprised of investments in common collective trusts with the underlying assets invested in asset-backed securities, money market funds, corporate bonds and bank notes. The underlying assets are actively traded on the registered exchanges.

(g) Common/collective trust investments that are measured at fair value using the net asset value per share practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total fair value of plan assets. The Company has participant redemptions restricted to the last business day of the quarter, with either a 65 or 90 day period redemption notice.

The following table represents a rollforward of the December 31, 2017 balances of our plan assets that are valued using Level 3 inputs:

(Amounts in thousands)	Hedge Fund of Funds
Balance as of December 31, 2016	$	9,967
Actual return on plan assets:
Relating to assets still held at the reporting date	—
Relating to assets sold during the period	(9,967		)
Purchases, sales and settlements, net	—
Balance as of December 31, 2017	$	—

Expected Cash Flows

The following table summarizes expected employer contributions and future benefit payments:

(Amounts in thousands)
Expected contributions to plan trusts
2019	$	6,000
Total expected contributions	$	6,000
Expected benefit payments:
2019	$	9,823
2020	10,242
2021	10,649
2022	11,196
2023	11,547
2024 through 2028	61,609
Total expected benefit payments	$	115,066

13. Earnings Per Common Share

Basic earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding during the period and the effect of all dilutive common stock equivalents. In periods where there is a net loss, diluted loss per common share is equal to basic loss per common share, since the effect of including any common stock equivalents would be antidilutive.

For the years ended December 31, 2018, 2017 and 2016, the computation of diluted earnings per share included the effect of 1.3 million, 1.7 million and 2.0 million dilutive stock options and restricted stock units, respectively. For the years ended December 31, 2018, 2017 and 2016, the computation of diluted earnings per share excluded the effect of 0.7 million, 0.4 million and 0.4 million antidilutive stock options and restricted stock units, respectively. Earnings per common share for the years ended December 31, 2018, 2017 and 2016 was calculated as follows:

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

	For the year ended December 31,
(Amounts in thousands, except per share amounts)	2018		2017		2016
Net income attributable to Six Flags Entertainment Corporation common stockholders	$	275,996	$	273,816	$	118,302
Weighted-average common shares outstanding—basic	84,100		86,802		92,349
Effect of dilutive stock options and restricted stock units	1,345		1,692		2,049
Weighted-average common shares outstanding—diluted	85,445		88,494		94,398
Earnings per share—basic	$	3.28	$	3.15	$	1.28
Earnings per share—diluted	$	3.23	$	3.09	$	1.25

14. Commitments and Contingencies

Partnership Parks

On April 1, 1998, we acquired all of the capital stock of Former SFEC for $976.0 million, paid in cash. In addition to our obligations under outstanding indebtedness and other securities issued or assumed in the Former SFEC acquisition, we also guaranteed certain contractual obligations relating to the Partnership Parks. Specifically, we guaranteed the obligations of the general partners of those partnerships to (i) make minimum annual distributions (including rent) of approximately $72.5 million in 2019 (subject to cost of living adjustments) to the limited partners in the Partnership Parks (based on our ownership of units as of December 31, 2018, our share of the distribution will be approximately $31.7 million) and (ii) make minimum capital expenditures at each of the Partnership Parks during rolling five-year periods, based generally on 6% of the Partnership Parks' revenues. Cash flow from operations at the Partnership Parks is used to satisfy these requirements, before any funds are required from us. We also guaranteed the obligation of our subsidiaries to annually purchase all outstanding limited partnership units to the extent tendered by the unit holders (the "Partnership Park Put"). The agreed price for units tendered in the Partnership Park Put is based on a valuation of each of the respective Partnership Parks (the "Specified Price") that is the greater of (a) a valuation for each of the respective Partnership Parks derived by multiplying such park's weighted average four year EBITDA (as defined in the agreements that govern the partnerships) by a specified multiple (8.0 in the case of SFOG and 8.5 in the case of SFOT) and (b) a valuation derived from the highest prices previously paid for the units of the Partnership Parks by certain entities.  Pursuant to the valuation methodologies described in the preceding sentence, the Specified Price for the Partnership Parks, if determined as of December 31, 2018, is $408.3 million in the case of SFOG and $520.5 million in the case of SFOT. As of December 31, 2018, we owned approximately 31.0% and 53.2% of the Georgia limited partner interests and Texas limited partner interests, respectively. Our obligations with respect to SFOG and SFOT will continue until 2027 and 2028, respectively.

In 2027 and 2028, we will have the option to purchase all remaining units in the Georgia limited partner and the Texas limited partner, respectively, at a price based on the Specified Price, increased by a cost of living adjustment. Pursuant to the 2018 annual offer, we did not purchase any units from the Georgia partnership and we purchased 0.1750 units from the Texas partnership for approximately $0.4 million in May 2018. Pursuant to the 2017 annual offer, we did not purchase any units from the Georgia partnership and we purchased 0.0708 units from the Texas partnership for approximately $0.1 million in May 2017. As we purchase additional units, we are entitled to a proportionate increase in our share of the minimum annual distributions. The maximum unit purchase obligations for 2018 at both parks aggregated approximately $525.3 million, representing approximately 69.0% of the outstanding units of SFOG and 46.8% of the outstanding units of SFOT. The $350.0 million accordion feature on the Amended and Restated Term Loan B under the Amended and Restated Credit Facility is available for borrowing for future "put" obligations if necessary.

In connection with our acquisition of the Former SFEC, we entered into the Subordinated Indemnity Agreement with certain of the Company's entities, Time Warner and an affiliate of Time Warner, pursuant to which, among other things, we transferred to Time Warner (which has guaranteed all of our obligations under the Partnership Park arrangements) record title to the corporations which own the entities that have purchased and will purchase limited partnership units of the Partnership Parks, and we received an assignment from Time Warner of all cash flow received on such limited partnership units, and we otherwise control such entities. In addition, we issued preferred stock of the managing partner of the partnerships to Time Warner. In the event of a default by us under the Subordinated Indemnity Agreement or of our obligations to our partners in the Partnership Parks, these arrangements would permit Time Warner to take full control of both the entities that own limited partnership units and the managing partner. If we satisfy all such obligations, Time Warner is required to transfer to us the entire equity interests of these entities.

We incurred $21.2 million of capital expenditures at these parks during the 2018 season and intend to incur approximately $17 million of capital expenditures at these parks for the 2019 season, an amount in excess of the minimum required

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

expenditure. Cash flows from operations at the Partnership Parks will be used to satisfy the annual distribution and capital expenditure requirements, before any funds are required from us. The Partnership Parks generated approximately $77.6 million of cash in 2018 from operating activities after deduction of capital expenditures and excluding the impact of short-term intercompany advances from or payments to Holdings. As of December 31, 2018 and 2017, we had total loans receivable outstanding of $239.3 million from the partnerships that own the Partnership Parks, primarily to fund the acquisition of Six Flags White Water Atlanta, and to make capital improvements and distributions to the limited partners in prior years.

Operating Leases

We lease under long-term leases the sites of Six Flags Mexico, Six Flags Hurricane Harbor Oaxtepec, La Ronde, Six Flags Hurricane Harbor Concord, Frontier City, White Water Bay, Six Flags Hurricane Harbor Phoenix, Six Flags Hurricane Harbor Splashtown, Six Flags Darien Lake and a small parcel near Six Flags New England. In certain cases, rent is based upon a percentage of the revenues earned by the applicable park. Under these leases, we recognized rental expense of approximately $18.6 million, $5.9 million and $5.1 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Total rental expense, including office space and park sites, was approximately $27.9 million, $16.1 million and $12.9 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Future minimum obligations under non-cancelable operating leases, including site leases, as of December 31, 2018, are summarized as follows:

(Amounts in thousands)
For the year ending December 31:
2019	$	23,936
2020	23,266
2021	22,384
2022	21,626
2023	21,563
2024 and thereafter	314,799
	$	427,574

License Agreements

We are party to a license agreement pursuant to which we have the exclusive right on a long-term basis to theme park use in the United States and Canada (excluding the Las Vegas, Nevada metropolitan area) of all animated, cartoon and comic book characters that Warner Bros. and DC Comics have the right to license for such use. The license fee is subject to periodic scheduled increases and is payable on a per-theme park basis.

In November 1999, we entered into license agreements pursuant to which we have the exclusive right on a long-term basis to parks use in Europe, Central and South America of all animated, cartoon and comic book characters that Warner Bros. and DC Comics have the right to license for such use. Under such agreements, the license fee is based on specified percentages of the gross revenues of the applicable parks.

Insurance

We maintain insurance of the types and in amounts that we believe are commercially reasonable and that are available to businesses in our industry. We maintain multi-layered general liability policies that provide for excess liability coverage of up to $100.0 million per occurrence. For incidents arising on or after December 31, 2008, our self-insured retention is $2.0 million, followed by a $0.5 million deductible per occurrence applicable to all claims in the policy year for our domestic parks and our park in Canada and a nominal amount per occurrence for our parks in Mexico. Defense costs are in addition to these retentions. Our general liability policies cover the cost of punitive damages only in certain jurisdictions. Based upon reported claims and an estimate for incurred, but not reported claims, we accrue a liability for our self-insured retention contingencies. For workers' compensation claims arising after November 15, 2003, our deductible is $0.75 million. We also maintain fire and extended coverage, business interruption, terrorism and other forms of insurance typical to businesses in this industry. The all peril property coverage policies insure our real and personal properties (other than land) against physical damage resulting from a variety of hazards. Additionally, we maintain information security and privacy liability insurance in the amount of $10.0 million with a $0.25 million self-insured retention per event.

We generally renegotiate our insurance policies on an annual basis. The majority of our current insurance policies expire on December 31, 2019. We cannot predict the level of the premiums that we may be required to pay for subsequent insurance

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

coverage, the level of any self-insurance retention applicable thereto, the level of aggregate coverage available or the availability of coverage for specific risks.

Capital Expenditures

We currently plan on spending approximately 9% of annual revenues on capital expenditures during the 2019 calendar year.

Litigation

We are party to various legal actions arising in the normal course of business, including the cases discussed below. Matters that are probable of unfavorable outcome to us and which can be reasonably estimated are accrued. Such accruals are based on information known about the matters, our estimate of the outcomes of such matters and our experience in contesting, litigating and settling similar matters. None of the actions are believed by management to involve amounts that would be material to our consolidated balance sheets, results of operations or liquidity after consideration of recorded accruals.

On July 3, 2012, a civil action was commenced against us in the Superior Court of Solano County, California. The plaintiffs sought damages for personal injuries when a guest at Six Flags Discovery Kingdom jumped on a swinging gate arm that entered a passing tram carrying the plaintiffs on July 3, 2010. On October 24, 2014, the litigation was dismissed, without prejudice, with respect to one of the plaintiffs, a minor, who may reinstate the lawsuit at any time prior to two years following the date such plaintiff reaches the age of majority. In January 2015, an agreement was reached to settle the lawsuit with the remaining plaintiffs. We previously expensed the full amount of our $2.5 million self-insurance retention plus litigation costs in connection with this incident. Based on the passage of time without ongoing litigation and the advice of counsel, the accrual was reduced.

On January 7, 2016, a potential class action complaint was filed against Six Flags Entertainment Corporation in the Circuit Court of Lake County, Illinois. On April 22, 2016, Great America, LLC was added as a defendant. The complaint asserts that we violated the Illinois Biometric Information Privacy Act ("BIPA") in connection with the admission of season pass holders and members through the finger scan program that commenced in the 2014 operating season at Six Flags Great America in Gurnee, Illinois, and seeks statutory damages, attorney's fees and an injunction. An aggrieved party under BIPA may recover (i) $1,000 if a company is found to have negligently violated BIPA or (ii) $5,000 if found to have intentionally or recklessly violated BIPA, plus reasonable attorneys' fees in each case. The complaint does not allege that any information was misused or disseminated. On April 7, 2017, the trial court certified two questions for consideration by the Illinois Appellate Court of the Second District. On June 7, 2017, the Illinois Appellate Court granted our motion to appeal. Accordingly, two questions regarding the interpretation of BIPA were certified for consideration by the Appellate Court. On December 21, 2017, the Appellate Court found in our favor, holding that the plaintiff had to allege more than a technical violation of BIPA and had to be injured in some way in order to have a right of action. On March 1, 2018, the plaintiff filed a petition for leave to appeal to the Illinois Supreme Court. On May 30, 2018, the Illinois Supreme Court granted the plaintiff's leave to appeal and oral arguments were heard on November 20, 2018. On January 25, 2019, the Illinois Supreme Court found in favor of the plaintiff holding that the plaintiff does not need to allege an actual injury beyond the violation of his rights under BIPA in order to proceed with a complaint. We intend to continue to vigorously defend ourselves against this litigation. Since this litigation is still in an early stage, the outcome is currently not determinable, and a reasonable estimate of loss or range of loss in excess of the immaterial amount that we have recorded for this litigation cannot be made.

During 2017, four potential class action complaints were filed against Six Flags Entertainment Corporation or one of its subsidiaries. Complaints were filed on August 11, 2017 in the Circuit Court of Lake County, Illinois, on September 1, 2017 in the United States District Court for the Northern District of Georgia, on September 11, 2017 in the Superior Court of Los Angeles County, California, and on November 30, 2017 in the Superior Court of Ocean County, New Jersey. The complaints allege that we, in violation of federal law, printed more than the last five digits of a credit or debit card number on customers’ receipts, and/or the expiration dates of those cards. A willful violation may subject a company to liability for actual damages or statutory damages between $100 and $1,000 per person, punitive damages in an amount determined by a court, and reasonable attorneys’ fees, all of which are being sought by plaintiffs. The complaints do not allege that any information was misused. We intend to vigorously defend ourselves against this litigation. Since this litigation is in an early stage, the outcome is currently not determinable and a reasonable estimate of loss or range of loss in excess of the immaterial amount that we have recorded for this litigation cannot be made.

Tax and other contingencies

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SIX FLAGS ENTERTAINMENT CORPORATION

Notes to Consolidated Financial Statements

As of December 31, 2018 and 2017, we had a nominal amount of accrued liabilities for tax and other indemnification contingencies related to certain parks sold in previous years that could be recognized as recovery losses from discontinued operations in the future if such liabilities are not requested to be paid.

15. Business Segments

We manage our operations on an individual park location basis, including operations from parks owned, managed and branded. Discrete financial information is maintained for each park and provided to our corporate management for review and as a basis for decision making. The primary performance measures used to allocate resources is Park EBITDA (defined as park-related operating earnings, excluding the impact of interest, taxes, depreciation, amortization and any other non-cash income or expenditures). Primarily all of our parks provide similar products and services through a similar process to the same class of customer through a consistent method. We also believe that the parks share common economic characteristics. Based on these factors, we have only one reportable segment - parks.

The following table presents segment financial information and a reconciliation of net income to Park EBITDA. Park level expenses exclude all non-cash operating expenses, principally depreciation and amortization and all non-operating expenses.

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Net income	$	316,003		$	313,026		$	156,727
Interest expense, net	107,243			99,010			81,872
Income tax expense	95,855			16,026			76,539
Depreciation and amortization	115,693			111,671			106,893
Corporate expenses	48,679			52,105			51,435
Stock-based compensation	(46,684		)	(22,697		)	116,339
Non-operating park level expense, net:
Loss on disposal of assets	1,879			3,959			1,968
Loss on debt extinguishment, net	—			37,116			2,935
Other expense, net	3,508			271			1,684
Park EBITDA	$	642,176		$	610,487		$	596,392

All of our owned or managed parks are located in the United States with the exception of two parks in Mexico and one park in Montreal, Canada. We also have revenue and expenses related to the development of Six Flags-branded parks outside of North America. The following information reflects our long-lived assets (which consists of property and equipment and intangible assets), revenues and income by domestic and foreign categories as of or for the years ended December 31, 2018, 2017 and 2016:

(Amounts in thousands)	Domestic		Foreign		Total
As of or for the year ended December 31, 2018
Long-lived assets	$	2,160,970	$	101,359	$	2,262,329
Revenues	1,335,787		127,920		1,463,707
Income before income taxes	383,875		27,983		411,858
As of or for the year ended December 31, 2017
Long-lived assets	$	2,121,157	$	98,635	$	2,219,792
Revenues	1,240,018		119,056		1,359,074
Income before income taxes	301,322		27,730		329,052
As of or for the year ended December 31, 2016
Long-lived assets	$	2,111,839	$	83,636	$	2,195,475
Revenues	1,205,235		114,163		1,319,398
Income before income taxes	216,205		17,061		233,266

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Notes to Consolidated Financial Statements

16. Quarterly Financial Information (Unaudited)

Following is a summary of the unaudited interim results of operations for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31, 2018
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	128,964		$	445,420	$	619,820	$	269,503
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(62,345		)	74,502		184,417		79,422
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.74	)	$	0.89	$	2.19	$	0.94
Diluted	(0.74		)	0.88		2.16		0.93

	Year Ended December 31, 2017
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	99,528		$	422,372	$	580,418	$	256,756
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(57,548		)	52,026		181,325		98,013
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.63	)	$	0.60	$	2.15	$	1.16
Diluted	(0.63		)	0.59		2.11		1.14

	Year Ended December 31, 2016
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	115,419		$	407,066	$	557,599	$	239,314
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(46,935		)	60,887		102,482		1,868
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.51	)	$	0.65	$	1.11	$	0.02
Diluted	(0.51		)	0.64		1.09		0.02

We operate a seasonal business. In particular, our theme park and waterpark operations contribute most of their annual revenue during the period from Memorial Day to Labor Day each year.

During the second and third quarter of 2017, it was determined that achieving the Modified EBITDA performance target related to the 2017 Performance Award would be difficult due to adverse weather and natural disasters experienced during the summer months of 2017, but late achievement of the 2017 Performance Award target was probable by the end of 2018. As a result, we recorded a reversal to stock-based compensation expense related to this award in the second and third quarters of 2017 of $27.9 million and $45.0 million, respectively, to reflect partial achievement of the 2017 Performance Award. The 2017 Performance Award provided for late achievement of the Modified EBITDA performance target in 2018, which did not occur. As a result, we recorded a reversal to stock-based compensation expense of $81.7 million in the fourth quarter of 2018 related to the 2017 Performance Award. Refer to Note 9 for further discussion.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

We have had no disagreements with our independent registered public accounting firm on any matter of accounting principles or practices or financial statement disclosure.

ITEM 9A. CONTROLS AND PROCEDURES

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation, as of December 31, 2018, of the effectiveness of our disclosure controls and procedures, as such term is defined under Rule 13a-15(e) or 15(d)-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Based on this evaluation, our Chief Executive Officer and our Chief Financial Officer

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concluded that, as of the end of such period, our disclosure controls and procedures are effective to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is (i) recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms and (ii) accumulated and communicated to our management, including our principal executive and principal financial officers, or persons performing similar functions, as appropriate, to allow timely decisions regarding required disclosure.

Management's Report on Internal Control Over Financial Reporting

Management's Report on Internal Control Over Financial Reporting included in Item 8 of this Annual Report is incorporated by reference herein.

Changes in Internal Control Over Financial Reporting During the Quarter Ended December 31, 2018

There were no changes in our internal control over financial reporting, as such term is defined under Rule 13a-15(f) or 15(d)-15(f) promulgated under the Securities Exchange Act of 1934, as amended, that occurred during our fiscal quarter ended December 31, 2018 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

ITEM 9B. OTHER INFORMATION

None.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information required by this item regarding our executive officers is provided in "Item 1. Business — Executive Officers and Certain Significant Employees" of this Annual Report. The information required by this item concerning our directors, compliance with Section 16 of the Exchange Act, our code of ethics and other corporate governance information is incorporated by reference to the information set forth in the sections entitled "Proposal 1: Election of Directors," "Section 16(a) Beneficial Ownership Reporting Compliance" and "Corporate Governance" in our Proxy Statement for our 2019 annual meeting of stockholders to be filed with the SEC not later than 120 days after the fiscal year ended December 31, 2018 (the "2019 Proxy Statement").

ITEM 11. EXECUTIVE COMPENSATION

The information required by this item is incorporated by reference to the information set forth in the sections entitled "2018 Non-Employee Director Compensation," "Executive Compensation," "Corporate Governance" and "Compensation Committee Report" in the 2019 Proxy Statement.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by this item concerning security ownership of certain beneficial owners and management is incorporated by reference to the information set forth in the section entitled "Security Ownership of Certain Beneficial Owners and Management" in the 2019 Proxy Statement.

Equity Compensation Plan Information

The following table contains information as of December 31, 2018 regarding shares of common stock that may be issued under equity compensation plans approved by our stockholders (Employee Stock Purchase Plan and Long-Term Incentive Plan).

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Plan Category	(a) Number of securities to be issued upon exercise of outstanding options, warrants and rights		(b) Weighted-average exercise price of outstanding options, warrants and rights			(c) Number of securities remaining available for future issuance under equity compensation plans
Equity compensation plans approved by security holders	5,380,000	(1)	$	50.60	(2)	6,788,000	(3)
Equity compensation plans not approved by security holders	N/A		N/A			N/A
Total	5,380,000		$	50.60		6,788,000

________________________________________

(1) Excludes restricted stock units outstanding under the Company's Long-Term Incentive Plan and rights outstanding under the Company's Employee Stock Purchase Plan. We are unable to ascertain with specificity the number of securities to be issued upon exercise of outstanding rights under the Company's Employee Stock Purchase Plan.

(2) The determination of the weighted-average exercise price excludes outstanding rights under the Company's Employee Stock Purchase Plan and restricted stock units under the Company's Long-Term Incentive Plan.

(3) Consists of 1,702,000 shares reserved for issuance under the Company's Employee Stock Purchase Plan and 5,086,000 shares reserved for issuance under the Long-Term Incentive Plan. The Employee Stock Purchase Plan allows eligible employees to purchase shares at 90% of the lower of the fair market value on the first or last trading day of each six-month offering period. Shares available for issuance under the Long-Term Incentive Plan can be granted pursuant to stock options, stock appreciation rights, restricted stock or units, performance units, performance shares and any other stock-based award selected by the committee.

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ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

The information required by this item is incorporated by reference to the information set forth in the sections entitled "Transactions with Related Persons" and "Corporate Governance — Independence" in the 2019 Proxy Statement.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this item is incorporated by reference to the information set forth in the section entitled "Audit, Audit-Related and Tax Fees" in the 2019 Proxy Statement.

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PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)(1) and (2) Financial Statements and Financial Statement Schedules

The following consolidated financial statements of Six Flags Entertainment Corporation and its subsidiaries, the notes thereto, the related report thereon of the independent registered public accounting firm, and financial statement schedules are filed under Item 8 of this Annual Report:

Management's Report on Internal Control Over Financial Reporting	43
Report of Independent Registered Public Accounting Firm	44
Consolidated Balance Sheets as of December 31, 2018 and 2017	46
Consolidated Statements of Operations for the Years Ended December 31, 2018, 2017 and 2016	47
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2018, 2017 and 2016	48
Consolidated Statements of Equity (Deficit) for the Years Ended December 31, 2018, 2017 and 2016	49
Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016	50
Notes to Consolidated Financial Statements	51

Certain schedules for which provision is made in the applicable accounting regulations of the SEC have been omitted because they either are not required under the related instructions, are inapplicable, or the required information is shown in the financial statements or notes thereto.

(a)(3) Exhibits

Exhibit Number	Exhibit Description
3.1	Restated Certificate of Incorporation of Six Flags Entertainment Corporation, as amended—incorporated by reference to Exhibit 3.1 to Registrant's Quarterly Report on Form 10-Q (File No. 001-13703) for the quarter ended June 30, 2011.
—	Certificate of Amendment to Restated Certificate of Incorporation of Six Flags Entertainment Corporation—incorporated by reference to Exhibit 3.1 to Registrant's Quarterly Report on Form 10-Q (File No. 001-13703) filed on July 25, 2018.
—	Amended and Restated Bylaws of Six Flags Entertainment Corporation—incorporated by reference to Exhibit 3.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on February 7, 2018.
4.1	Registration Rights Agreement, dated as of April 30, 2010, between Six Flags Entertainment Corporation and certain holders of Common Stock—incorporated by reference to Exhibit 4.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on May 3, 2010.
4.2	Indenture, dated as of December 21, 2012, among Six Flags Entertainment Corporation, the guarantors party thereto and U.S. Bank National Association, as trustee—incorporated by reference to Exhibit 4.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on December 21, 2012.
4.3	Form of 5.25% Senior Note due 2021—incorporated by reference to Exhibit 4.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on December 21, 2012.
4.4	Indenture, dated as of June 16, 2016, among Six Flags Entertainment Corporation, the guarantors party thereto and U.S. Bank National Association, as trustee—incorporated by reference to Exhibit 4.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on June 17, 2016.
4.5	Form of 4.875% Senior Note due 2024 (included as Exhibit A to Exhibit 4.4)—incorporated by reference to Exhibit 4.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on June 17, 2016.

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4.6		Indenture, dated as of April 13, 2017, by and among Six Flags Entertainment Corporation, each of the guarantors party thereto and U.S. Bank National Association as trustee-incorporated by reference to Exhibit 4.3 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on April 13, 2017.
4.7		Form of 5.500% Senior Notes due 2027 (included as Exhibit A to Exhibit 4.6)-incorporated by reference to Exhibit 4.3 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on April 13, 2017.
10.1		Subordinated Indemnity Agreement, dated February 9, 1998 among Registrant, the subsidiaries of Registrant named therein, Time Warner Inc., the subsidiaries of Time Warner Inc. named therein, Six Flags Entertainment Corporation and the subsidiaries of Six Flags Entertainment Corporation named therein—incorporated by reference from Exhibit 2(b) to Registrant's Registration Statement on Form S-3 (No. 333-45859) declared effective on March 26, 1998.
10.2		Amendment No. 1 Subordinated Indemnity Agreement, dated November 5, 1999, among Registrant, the subsidiaries of Registrant named therein, Time Warner Inc., the subsidiaries of Time Warner Inc. named therein, Six Flags Entertainment Corporation, and the subsidiaries of Six Flags Entertainment Corporation named therein—incorporated by reference from Exhibit 10 (bb) to Registrant's Form 10-K for the year ended December 31, 2003.
10.3		Amendment No. 2 Subordinated Indemnity Agreement, dated June 12, 2004, among Registrant, the subsidiaries of Registrant named therein, Time Warner Inc., the subsidiaries of Time Warner Inc. named therein, Six Flags Entertainment Corporation, and the subsidiaries of Six Flags Entertainment Corporation named therein—incorporated by reference from Exhibit 10 (cc) to Registrant's Form 10-K for the year ended December 31, 2003.
10.4		Amendment No. 3 to the Subordinated Indemnity Agreement, dated as of April 13, 2004, among Six Flags Operations Inc., Six Flags Theme Parks Inc., SFOG II, Inc., SFT Holdings, Inc., Time Warner Inc., Time Warner Entertainment Company, L.P., TW-SPV Co., Six Flags, Inc. and GP Holdings Inc.—incorporated by reference to Exhibit 10.4 to Registrant's Form 10-Q (File No. 001-13703) for the quarter ended June 30, 2009.
10.5		Amendment No. 4 to the Subordinated Indemnity Agreement, dated as of December 8, 2006, among Six Flags Operations Inc., Six Flags Theme Parks Inc., SFOG II, Inc., SFT Holdings, Inc., Time Warner Inc., Time Warner Entertainment Company, L.P., TW-SPV Co., Six Flags, Inc. and GP Holdings Inc.—incorporated by reference to Exhibit 10.5 to Registrant's Form 10-Q (File No. 001-13703) for the quarter ended June 30, 2009.
10.6		Amendment No. 5 to the Subordinated Indemnity Agreement, dated as of April 2, 2007, among Six Flags Operations Inc., Six Flags Theme Parks Inc., SFOG II, Inc., SFT Holdings, Inc., Time Warner Inc., Warner Bros. Entertainment Inc., TW-SPV Co., Six Flags, Inc. and GP Holdings Inc.—incorporated by reference to Exhibit 10.6 to Registrant's Form 10-Q (File No. 001-13703) for the quarter ended June 30, 2009.
10.7		Amendment No. 6 to the Subordinated Indemnity Agreement, dated as of May 15, 2009, among Six Flags Operations Inc., Six Flags Theme Parks Inc., SFOG II, Inc., SFT Holdings, Inc., Historic TW Inc., Time Warner Entertainment Company, L.P., TW-SPV Co., Six Flags, Inc. and GP Holdings Inc.—incorporated by reference to Exhibit 10.7 to Registrant's Form 10-Q (File No. 001-13703) for the quarter ended June 30, 2009.
10.8		Amendment No. 7 to the Subordinated Indemnity Agreement, dated as of April 30, 2010, among Six Flags Operations Inc., Six Flags Theme Parks Inc., SFOG II, Inc., SFT Holdings, Inc., Historic TW Inc., Warner Bros. Entertainment Inc., TW-SPV Co., Six Flags Entertainment Corporation, the other subsidiaries of Six Flags Entertainment Corporation and GP Holdings Inc.—incorporated by reference from Exhibit 10.7 to Registrant's Form 10-Q (File No. 001-13703) for the quarter ended March 31, 2010.
10.9	†	Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Appendix A to Registrant's Definitive Proxy Statement (File No. 001-13703) filed on March 20, 2012.
10.10	†	Form of Indemnity Agreement—incorporated by reference to Exhibit 10.8 to Registrant's Form 10-Q (File No. 001-13703) for the quarter ended March 31, 2010.
10.11	†	Form of Restricted Stock Unit Agreement Pursuant to the Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on August 11, 2010.
10.12	†	Form of Non-Qualified Stock Option Agreement and Dividend Equivalent Rights Award pursuant to the Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Exhibit 10.30 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2012.
10.13	†	Employment Agreement, dated August 12, 2010, by and between James Reid-Anderson and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on August 18, 2010.
10.14	†	Restricted Shares Agreement Pursuant to the Six Flags Entertainment Corporation Long-Term Incentive Plan, between James Reid-Anderson and Six Flags Entertainment Corporation, dated August 12, 2010—incorporated by reference to Exhibit 10.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on August 18, 2010.

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10.15	†	Nonqualified Stock Option Agreement Pursuant to the Six Flags Entertainment Corporation Long-Term Plan, between James Reid-Anderson and Six Flags Entertainment Corporation, dated August 12, 2010—incorporated by reference to Exhibit 10.3 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on August 18, 2010.
10.16	†	Employment Agreement, dated September 7, 2010, by and between John M. Duffey and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on September 13, 2010.
10.17	†	Employment Agreement, dated September 7, 2010, by and between Lance C. Balk and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.3 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on September 13, 2010.
10.18	†	Six Flags Entertainment Corporation Employee Stock Purchase Plan—incorporated by reference to Exhibit 99.1 to Registrant's Registration Statement on Form S-8 (Reg. No. 333-170584) filed on November 12, 2010.
10.19	†	Employment Agreement, dated November 29, 2010, by and between Walter S. Hawrylak and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on December 7, 2010.
10.20	†	Employment Agreement, dated November 29, 2010, by and between Brett Petit and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on December 7, 2010.
10.21	†	Amendment No. 1 to Employment Agreement, dated March 7, 2011, by and between James Reid-Anderson and Six Flags Entertainment Corporation—incorporated by reference to Exhibit (10)(jjjj) to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2010.
10.22	†	Form of Amendment by and between Six Flags Entertainment Corporation and Certain Executives—James Reid-Anderson, John M. Duffey and Lance C. Balk—incorporated by reference to Exhibit (10) (kkkk) to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2010.
10.23	†	Amendment No. 1 to the Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on May 5, 2011.
10.24	†	Project 500 Program Overview—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on September 1, 2011.
10.25	†	Project 500 Program Form of Award Agreement and appendix listing Project 500 Awards to Executive Officers—incorporated by reference to Exhibits 10.2 and 99.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on September 1, 2011.
10.26	†	Director Deferral Election—incorporated by reference to Exhibit 10.3 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on September 1, 2011.
10.27		$1,135,000,000 Credit Agreement, dated as of December 20, 2011, among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the several lenders from time to time parties thereto, Wells Fargo Bank, N. A., as Administrative Agent, an Issuing Lender and a Swing Line Lender, Wells Fargo Securities, LLC, as Lead Arranger, Bank of America, N.A., JPMorgan Chase Bank, N.A. and Barclays Bank plc, as Co-Documentation Agents, Goldman Sachs Bank USA and Deutsche Bank Securities Inc., as Co-Syndication Agents, and Wells Fargo Securities, LLC, Goldman Sachs Bank USA, Deutsche Bank Securities Inc., Bank of America, N.A., JPMorgan Chase Bank, N.A. and Barclays Capital, as Joint Bookrunners—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on December 20, 2011.
10.28		Guarantee and Collateral Agreement, dated as of December 20, 2011, by Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc. and each of the other signatories thereto, as Grantors, in favor of Wells Fargo Bank, N. A., as Administrative Agent, for the banks and other financial institutions or entities from time to time parties to the $1,135,000,000 Credit Agreement dated as of December 20, 2011—incorporated by reference to Exhibit 10.51 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2011.
10.29	†	Form of Executive Officer Restricted Stock Unit Agreement pursuant to the Project 350 Performance Award granted under the Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Exhibit 10.53 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2011.
10.30	†	James Reid-Anderson Restricted Stock Unit Agreement pursuant to the Project 350 Performance Award granted under the Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Exhibit 10.54 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2011.
10.31	†	Form of Dividend Equivalent Rights Award for Project 500—incorporated by reference to Exhibit 10.55 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2011.

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10.32	†	Form of Amendment to Employment Agreement by and between Six Flags Entertainment Corporation and Certain Executives—Walter S. Hawrylak and Brett Petit—incorporated by reference to Exhibit 10.5 to Registrant's Quarterly Report on Form 10-Q (File No. 001-13703) for the quarter ended March 31, 2012.
10.33	†	Project 500 Program Amended and Restated Overview—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on May 11, 2012.
10.34	†	Project 500 Program Amended and Restated Award Agreement—incorporated by reference to Exhibit 10.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on May 11, 2012.
10.35	†	Supplemental 401(k) Plan—incorporated by reference to Exhibit 10.3 to Registrant's Quarterly Report on Form 10-Q (File No. 001-13703) for the quarter ended June 30, 2012.
10.36		Form of First Amendment to Credit Agreement by and among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the Subsidiary Guarantors listed on the signature pages thereto, Wells Fargo Bank, National Association, as administrative agent, and several lenders (without exhibits)—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on December 5, 2012.
10.37	†	Amendment No. 1 to Employment Agreement, dated August 16, 2013, by and between John M. Duffey and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.1 to Registrant's Quarterly Report on Form 10-Q (File No. 001-13703) for the quarter ended September 30, 2013.
10.38		Second Amendment to Credit Agreement, dated as of December 23, 2013, by and among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the Subsidiary Guarantors listed on the signature pages thereto, Wells Fargo Bank, National Association, as administrative agent, and several lenders (without exhibits)—incorporated by reference to Exhibit 10.60 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2013.
10.39	†	Form of Director Deferred Share Unit Agreement pursuant to the Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Exhibit 10.61 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2013.
10.40	†	List of Project 600 Awards—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on October 21, 2014.
10.41	†	Project 600 Program Overview—incorporated by reference to Exhibit 10.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on October 21, 2014.
10.42	†	Form of Project 600 Program Award Agreement—incorporated by reference to Exhibit 10.3 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on October 21, 2014.
10.43	†	Form of Director Restricted Stock Agreement Pursuant to the Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Exhibit 10.44 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2014.
10.44	†	Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Appendix A to Registrant's Definitive Proxy Statement (File No. 001-13703) filed on March 24, 2015.
10.45		$950,000,000 Amended and Restated Credit Agreement, dated as of June 30, 2015, among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc. and several lenders, Wells Fargo Bank, National Association, as administrative agent, an issuing lender and a swingline lender, Wells Fargo Securities, LLC and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as joint lead arrangers, Barclays Bank PLC, JPMorgan Chase Bank, N.A., Compass and HSBC Bank USA, National Association, as co-documentation agents, Bank of America, N.A. and Goldman Sachs Bank USA, as co-syndication agents, and Wells Fargo Securities, LLC, Barclays Bank PLC, Goldman Sachs Bank USA, JPMorgan Securities LLC and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as joint bookrunners—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on July 1, 2015.
10.46		Amended and Restated Guarantee and Collateral Agreement, dated as of June 30, 2015, among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the other grantors party thereto, and Wells Fargo Bank, National Association, as administrative agent—incorporated by reference to Exhibit 10.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on July 1, 2015.
10.47	†	Employment Agreement, dated as of February 18, 2016, by and between James Reid-Anderson and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.47 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2015.
10.48	†	Employment Agreement, dated as of February 18, 2016, by and between John M. Duffey and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.48 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2015.
10.49	†	Employment Agreement, dated as of February 18, 2016, by and between Marshall Barber and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.49 to Registrant's Annual Report on Form 10-K (File No. 001-13703) for the year ended December 31, 2015.

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10.50	†	List of Project 750 Awards—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on October 28, 2016.
10.51	†	Project 750 Program Overview—incorporated by reference to Exhibit 10.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on October 28, 2016.
10.52	†	Form of Project 750 Program Award Agreement—incorporated by reference to Exhibit 10.3 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on October 26, 2016.
10.53	†	Amendment to Credit Agreement, dated as of June 16, 2016, by and among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the Subsidiary Guarantors (as defined therein) from time to time party thereto, the Lenders (as defined therein) from time to time party thereto, and Wells Fargo Bank, National Association, as administrative agent—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on June 17, 2016.
10.54	†	Second Amendment to Amended and Restated Credit Agreement, dated as of December 20, 2016, by and among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the Subsidiary Guarantors (as defined therein) from time to time party thereto, the Lenders (as defined therein) from time to time party thereto, and Wells Fargo Bank, National Association, as administrative agent—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on December 21, 2016.
10.55	†	Amendment No.1 to Employment Agreement, dated as of February 10, 2017, by and between James Reid-Anderson and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on February 13, 2017.
10.56	†	Six Flags Entertainment Corporation Long-Term Incentive Plan—incorporated by reference to Appendix A to Registrant's Definitive Proxy Statement (File No. 001-13703) filed on March 21, 2017.
10.57	†	Third Amendment and Limited Waiver to Amended and Restated Credit Agreement, dated as of June 21, 2017, among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the Subsidiary Guarantors (as defined therein) from time to time party thereto, the Lenders (as defined therein) from time to time party thereto and Wells Fargo Bank, National Association, as administrative agent-incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on June 21, 2017.
10.58	†	Employment Agreement, dated as of July 18, 2017, by and between James Reid-Anderson and Six Flags Entertainment Corporation-incorporated by reference to Exhibit 10.1 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on July 21, 2017.
10.59	†	Retirement Agreement, dated as of July 18, 2017, by and between John M. Duffey and Six Flags Entertainment Corporation-incorporated by reference to Exhibit 10.2 to Registrant's Current Report on Form 8-K (File No. 001-13703) filed on July 21, 2017.
10.60	†*	Employment Agreement, dated as of November 17, 2017, by and between Kathy Aslin and Six Flags Entertainment Corporation—incorporated by reference to Exhibit 10.59 to Registrant's Annual Report on Form 10-K (File No. 001-13703) filed on February 20, 2018.
10.61		Fourth Amendment to Amended and Restated Credit Agreement, dated as of March 26, 2018, among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the Subsidiary Guarantors (as defined therein) from time to time party thereto, the Lenders (as defined therein) from time to time party thereto and Wells Fargo Bank, National Association, as administrative agent—incorporated by reference to Exhibit 10.1 to Registrant's Quarterly Report on Form 10-Q (File No. 001-13703) filed on April 25, 2018.
10.62		First Incremental Amendment to Amended and Restated Credit Agreement, dated as of April 18, 2018, by and among Six Flags Entertainment Corporation, Six Flags Operations Inc., Six Flags Theme Parks Inc., the Subsidiary Guarantors (as defined therein) from time to time party thereto, the Lenders (as defined therein) from time to time party thereto, the Incremental Term Lenders (as defined therein), and Wells Fargo Bank, National Association, as administrative agent—incorporated by reference to Exhibit 10.2 to Registrant's Quarterly Report on Form 10-Q (File No. 001-13703) filed on April 25, 2018.
12.1	*	Computation of Ratio of Earnings to Fixed Charges.
21.1	*	Subsidiaries of the Registrant.
23.1	*	Consent of Independent Registered Public Accounting Firm.
31.1	*	Certification of Chief Executive Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	*	Certification of Chief Financial Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	*	Certification of Chief Executive Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	*	Certification of Chief Financial Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	**	XBRL Instance Document
101.SCH	**	XBRL Taxonomy Extension Schema Document

90

101.CAL	**	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	**	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	**	XBRL Taxonomy Extension Labels Linkbase Document
101.PRE	**	XBRL Taxonomy Extension Presentation Linkbase Document

_______________________________

* Filed herewith

** Furnished herewith

† Management contract or compensatory plan

(b) Exhibits

See Item 15(a)(3) above.

Neither Six Flags Entertainment Corporation, nor any of its consolidated subsidiaries, has outstanding any instrument with respect to its long-term debt, other than those filed as an exhibit to this Annual Report, under which the total amount of securities authorized exceeds 10% of the total assets of Six Flags Entertainment Corporation and its subsidiaries on a consolidated basis. Six Flags Entertainment Corporation hereby agrees to furnish to the SEC, upon request, a copy of each instrument that defines the rights of holders of such long-term debt that is not filed or incorporated by reference as an exhibit to this Annual Report.

Six Flags Entertainment Corporation will furnish any exhibit upon the payment of a reasonable fee, which fee will be limited to Six Flags Entertainment Corporation's reasonable expenses in furnishing such exhibit.

91

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: February 19, 2019

SIX FLAGS ENTERTAINMENT CORPORATION
By:	/s/ James Reid-Anderson
	James Reid-Anderson Chairman, President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the following capacities on the dates indicated.

Signature	Title	Date
/s/ JAMES REID-ANDERSON	Chairman of the Board, President and Chief Executive Officer (Principal Executive Officer)	February 19, 2019
James Reid-Anderson
/s/ MARSHALL BARBER	Executive Vice President and Chief Financial Officer (Principal Financial Officer)	February 19, 2019
Marshall Barber
/s/ TAYLOR BROOKS	Vice President and Chief Accounting Officer (Principal Accounting Officer)	February 19, 2019
Taylor Brooks
/s/ KURT CELLAR	Director	February 19, 2019
Kurt Cellar
/s/ NANCY A. KREJSA	Director	February 19, 2019
Nancy A. Krejsa
/s/ JON L. LUTHER	Director	February 19, 2019
Jon L. Luther
/s/ USMAN NABI	Director	February 19, 2019
Usman Nabi
/s/ STEPHEN D. OWENS	Director	February 19, 2019
Stephen D. Owens
/s/ RICHARD W. ROEDEL	Director	February 19, 2019
Richard W. Roedel

EX-12.1

Exhibit 12.1

Six Flags Entertainment Corporation

Computation of Ratio of Earnings to Fixed Charges

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016			2015			2014
Earnings:
Income from continuing operations	$	316,003		$	313,026		$	156,727		$	192,855		$	113,489
Income tax expense (benefit)	95,855			16,026			76,539			70,369			46,522
Interest Expense	108,034			99,766			82,377			76,205			73,057
Loss on debt extinguishment, net	—			37,116			2,935			6,557			—
Estimated interest component of rental expense	8,429			4,517			3,476			3,133			3,153
Adjusted earnings	$	528,321		$	470,451		$	322,054		$	349,119		$	236,221
Fixed Charges:
Interest Expense	$	108,034		$	99,766		$	82,377		$	76,205		$	73,057
Estimated interest component of rental expense	8,429			4,517			3,476			3,133			3,153
Total fixed charges	$	116,463		$	104,283		$	85,853		$	79,338		$	76,210
Ratio of earnings to fixed charge	4.5		x	4.5		x	3.8		x	4.4		x	3.1		x
Excess	$	411,858		$	366,168		$	236,201		$	269,781		$	160,011

EX-21.1

Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

Name of Subsidiary	Jurisdiction of Incorporation/Organization
9103-2359 Quebec Inc.	Canada
Assenzio S.r.l.	Italy
Entertainment Services Latam S.A. de C.V.	Mexico
Fiesta Texas Hospitality LLC	Texas
Fiesta Texas, Inc.	Texas
Flags Beverages, Inc.	Texas
Funtime Inc.	Ohio
Funtime Parks, Inc.	Delaware
GP Holdings Inc.	Delaware
Great America LLC	Illinois
Great Escape Holding Inc.	New York
Great Escape Rides L.P.	New York
Great Escape Theme Park L.P.	New York
Hurricane Harbor GP LLC	Delaware
Hurricane Harbor LP	Delaware
Hurricane Harbor LP LLC	Delaware
HWP Development LLC	New York
HWP Development Holdings LLC	New York
HWP Management, Inc.	New York
Magic Mountain LLC	California
Parc Six Flags Montreal Inc.	Canada
Parc Six Flags Montreal, S.E.C.	Canada
Park Management Corp.	California
PP Data Services Inc.	Texas
Premier International Holdings Inc.	Delaware
Premier Parks Holdings Inc.	Delaware
Riverside Park Enterprises, Inc.	Massachusetts
SF HWP Management LLC	New York
SFG Holdings, Inc.	Delaware
SF Great America Holding LLC	Illinois
SFOG II, Inc.	Delaware
SFOG II Employee, Inc.	Delaware
SFOG Acquisition A Holdings, Inc.	Delaware
SFOG Acquisition A, Inc.	Delaware
SFOG Acquisition B Holdings, Inc.	Delaware
SFOG Acquisition B, L.L.C.	Delaware

SFOG Acquisition Company LLC	Delaware
SFOT II Holdings, LLC	Delaware
SFOT Acquisition I, Inc.	Delaware
SFOT Acquisition I Holdings, Inc.	Delaware
SFOT Acquisition II, Inc.	Delaware
SFOT Acquisition II Holdings, Inc.	Delaware
SFOT Employee, Inc.	Delaware
SFT Holdings, Inc.	Delaware
Six Flags America Inc.	Colorado
Six Flags America LP	Maryland
Six Flags America Property Corporation	Maryland
Six Flags Concord LLC	California
Six Flags Darien LLC	New York
Six Flags Darien Seasonal LLC	New York
Six Flags Frontier LLC	Oklahoma
Six Flags Great Adventure LLC	New Jersey
Six Flags Great Adventure Charitable Foundation, LLC	New Jersey
Six Flags Great Escape L.P.	New York
Six Flags International Development Co.	Texas
Six Flags Mexico S.A. de C.V.	Mexico
Six Flags MW LLC	Illinois
Six Flags Oaxtepec S.A. de C.V.	Mexico
Six Flags Operations Inc.	Delaware
Six Flags Over Georgia, Inc.	Delaware
Six Flags Over Georgia II, L.P.	Delaware
Six Flags Over Texas, Inc.	Delaware
Six Flags Park Commercial Consulting (Beijing) Co., Ltd.	China
Six Flags Phoenix LLC	Arizona
Six Flags Services HK Limited	Hong Kong
Six Flags Services, Inc.	Delaware
Six Flags Services of Illinois, Inc.	Delaware
Six Flags Splashtown LLC	Texas
Six Flags St. Louis LLC	Missouri
Six Flags Theme Parks Inc.	Delaware
Six Flags WW Bay LLC	Oklahoma
South Street Holdings LLC	Delaware
Station Development Associates LP	Delaware
Station Development, Inc.	New York
Stuart Amusement Company	Massachusetts
Texas Flags, Ltd.	Delaware
Ventas y Servicios al Consumidor S.A. de C.V.	Mexico

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors
Six Flags Entertainment Corporation:

We consent to the incorporation by reference in the registration statements (No. 333‑206019, 333-168632, 333-170584, 333-181114, 333-196949, 333-219558, and 333-218800) on Forms S-8 and S-3 of Six Flags Entertainment Corporation of our report dated February 19, 2019, with respect to the consolidated balance sheets of Six Flags Entertainment Corporation and subsidiaries as of December 31, 2018 and 2017, the related consolidated statements of operations, comprehensive income, equity (deficit), and cash flows for each of the years in the three-year period ended December 31, 2018, and the related notes (collectively, the consolidated financial statements), and the effectiveness of internal control over financial reporting as of December 31, 2018, which report appears in the December 31, 2018 annual report on Form 10‑K of Six Flags Entertainment Corporation.

Our report dated February 19, 2019, on the effectiveness of internal control over financial reporting as of December 31, 2018, contains an explanatory paragraph that states Six Flags Entertainment Corporation (the Company) acquired five park operations of Premier Parks, LLC during 2018 through an asset purchase agreement, and management excluded from its assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2018, the five park operations of Premier Parks, LLC’s internal control over financial reporting associated with total assets of less than 2% of consolidated total assets and total revenues of less than 5% of consolidated total revenues included in the consolidated financial statements of the Company as of and for the year ended December 31, 2018. Our audit of internal control over financial reporting of the Company also excluded an evaluation of the internal control over financial reporting of the five park operations of Premier Parks, LLC.

Our report refers to a change of accounting for revenue recognition on January 1, 2018, due to the adoption of Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 606, Revenue from Contracts with Customers.

KPMG LLP

Dallas, Texas
February 19, 2019

EX-31.1

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER,

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, James Reid-Anderson, certify that:

1. I have reviewed this annual report on Form 10-K of Six Flags Entertainment Corporation;

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 19, 2019

/s/ James Reid-Anderson

James Reid-Anderson
Chairman, President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER,

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Marshall Barber, certify that:

1. I have reviewed this annual report on Form 10-K of Six Flags Entertainment Corporation;

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 19, 2019

/s/ Marshall Barber

Marshall Barber

Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER,

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Six Flags Entertainment Corporation (the "Company") on Form 10-K for the fiscal year ended December 31, 2018, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, James Reid-Anderson, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted by § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: February 19, 2019

/s/ James Reid-Anderson

James Reid-Anderson
Chairman, President and Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER,

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Six Flags Entertainment Corporation (the "Company") on Form 10-K for the fiscal year ended December 31, 2018, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Marshall Barber, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted by § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: February 19, 2019

/s/ Marshall Barber

Marshall Barber

Executive Vice President and Chief Financial Officer

XML

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Feb. 14, 2019	Jun. 30, 2017
Document and Entity Information
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	SIX
Entity Registrant Name	Six Flags Entertainment Corp
Entity Central Index Key	0000701374
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		84,074,573
Entity Public Float			$ 5,573.7

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 44,608	$ 77,496
Accounts receivable, net	116,043	72,693
Inventories	28,779	24,960
Prepaid expenses and other current assets	52,499	45,923
Total current assets	241,929	221,072
Property and equipment, net:
Property and equipment, at cost	2,204,678	2,095,887
Accumulated depreciation	(950,996)	(857,930)
Total property and equipment, net	1,253,682	1,237,957
Other assets:
Debt issuance costs	1,793	2,991
Deposits and other assets	11,277	12,821
Goodwill	659,618	630,248
Intangible assets, net of accumulated amortization	349,029	351,587
Total other assets	1,021,717	997,647
Total assets	2,517,328	2,456,676
Current liabilities:
Accounts payable	32,905	28,998
Accrued compensation, payroll taxes and benefits	30,468	26,576
Accrued insurance reserves	39,183	39,347
Accrued interest payable	30,697	26,288
Other accrued liabilities	45,880	34,617
Deferred revenue	146,227	142,014
Short term borrowings	43,000	0
Total current liabilities	368,360	297,840
Noncurrent Liabilities:
Long-term debt, net	2,063,512	2,021,178
Other long-term liabilities	29,280	41,488
Deferred income taxes	173,998	106,851
Total noncurrent liabilities	2,266,790	2,169,517
Total liabilities	2,635,150	2,467,357
Redeemable noncontrolling interests	525,271	494,431
Stockholders' deficit:
Preferred stock, $1.00 par value	0	0
Common stock, $0.025 par value, 140,000,000 shares authorized and 83,962,182 and 84,488,433 shares issued and outstanding at December 31, 2018 and December 31, 2017, respectively	2,099	2,112
Capital in excess of par value	1,037,640	1,086,265
Accumulated deficit	(1,611,334)	(1,529,608)
Accumulated other comprehensive loss, net of tax	(71,498)	(63,881)
Total stockholders' deficit	(643,093)	(505,112)
Total liabilities and deficit	$ 2,517,328	$ 2,456,676

XML

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, par value (in dollars per share)	$ 0.025	$ 0.025
Common stock, shares authorized (in shares)	140,000,000	140,000,000
Common stock, shares issued (in shares)	83,962,182	84,488,433
Common stock, shares outstanding (in shares)	83,962,182	84,488,433

XML

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Total Revenue	$ 1,463,707	$ 1,359,074	$ 1,319,398
Operating expenses (excluding depreciation and amortization shown separately below)	574,724	511,873	490,116
Selling, general and administrative expenses (including a net reversal of stock-based compensation of $46,684 in 2018 and $22,697 in 2017, and stock-based compensation of $116,339 in 2016 and excluding depreciation and amortization shown separately below)	132,168	159,070	293,005
Costs of products sold	121,803	110,374	109,579
Other net periodic pension benefit	(5,169)	(3,322)	(1,920)
Depreciation	113,246	109,206	104,290
Amortization	2,447	2,465	2,603
Loss on disposal of assets	1,879	3,959	1,968
Interest expense	108,034	99,766	82,377
Interest income	(791)	(756)	(505)
Loss on debt extinguishment	0	37,116	2,935
Other expense, net	3,508	271	1,684
Income before income taxes	411,858	329,052	233,266
Income tax expense	95,855	16,026	76,539
Net income	316,003	313,026	156,727
Less: Net income attributable to noncontrolling interests	(40,007)	(39,210)	(38,425)
Net income attributable to Six Flags Entertainment Corporation	$ 275,996	$ 273,816	$ 118,302
Weighted-average common shares outstanding:
Basic (in shares)	84,100	86,802	92,349
Diluted (in shares)	85,445	88,494	94,398
Net income per average common share:
Basic (in dollars per share)	$ 3.28	$ 3.15	$ 1.28
Diluted (in dollars per share)	3.23	3.09	1.25
Cash dividends declared per common share (in dollars per share)	$ 3.16	$ 2.62	$ 2.38
Park Admissions
Revenues
Total Revenue	$ 810,064	$ 741,275	$ 715,413
Park Food, Merchandise and Other
Revenues
Total Revenue	553,527	524,582	521,167
Sponsorship, International Agreements and Accommodations
Revenues
Total Revenue	$ 100,116	$ 93,217	$ 82,818

XML

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Stock-based compensation	$ (46,684)	$ (22,697)	$ 116,339

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income		$ 316,003	$ 313,026	$ 156,727
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	[1]	1,161	1,376	(4,639)
Defined benefit retirement plan	[2]	661	1,402	3,543
Change in cash flow hedging	[3]	0	525	470
Other comprehensive income (loss), net of tax		1,822	3,303	(626)
Comprehensive income		317,825	316,329	156,101
Comprehensive income attributable to noncontrolling interests		(40,007)	(39,210)	(38,425)
Comprehensive income attributable to Six Flags Entertainment Corporation		$ 277,818	$ 277,119	$ 117,676

[1] Foreign currency translation adjustment is presented net of tax expense of $0.3 million and $1.7 million for the years ended December 31, 2018 and 2017, respectively, and net of tax benefit of $2.5 million for the year ended December 31, 2016.

[2] Defined benefit retirement plan is presented net of tax expense of $0.2 million, $0.6 million and $2.3 million for the years ended December 31, 2018, 2017 and 2016, respectively.

[3] Change in cash flow hedging is presented net of tax expense of $0.3 million for the years ended December 31, 2017 and 2016.

XML

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustment, tax	$ 0.3	$ (1.7)	$ (2.5)
Defined benefit retirement plan, tax	(0.2)	(0.6)	(2.3)
Derivatives qualifying as hedges, tax	$ 0.0	$ 0.3	$ 0.3

XML

Consolidated Statements of Equity (Deficit) - USD ($) $ in Thousands	Total	Common stock	Capital in excess of par value	Retained earnings (accumulated deficit)	Accumulated other comprehensive (loss) income
Beginning Balance (in shares) at Dec. 31, 2015		91,550,851
Beginning Balance at Dec. 31, 2015	$ 24,216	$ 2,289	$ 1,041,710	$ (953,225)	$ (66,558)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock (in shares)		3,004,648
Issuance of common stock	34,681	$ 75	34,606
Stock-based compensation	116,339		116,339
Dividends declared to common shareholders	(219,093)			(219,093)
Repurchase of common stock (in shares)		(3,742,275)
Repurchase of common stock	(211,751)	$ (94)	(27,833)	(183,824)
Employee stock purchase plan (in shares)		36,204
Employee stock purchase plan	1,820	$ 1	1,819
Fresh start valuation adjustment for SFOT units purchased	36			36
Change in redemption value of partnership units	(50,414)		(50,414)
Net income attributable to Six Flags Entertainment Corporation	118,302			118,302
Other comprehensive income (loss), net of tax	(626)				(626)
Ending Balance (in shares) at Dec. 31, 2016		90,849,428
Ending Balance at Dec. 31, 2016	(186,490)	$ 2,271	1,116,227	(1,237,804)	(67,184)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock (in shares)		1,980,939
Issuance of common stock	60,583	$ 50	60,533
Stock-based compensation	(22,697)		(22,697)
Dividends declared to common shareholders	(226,078)			(226,078)
Repurchase of common stock (in shares)		(8,377,729)
Repurchase of common stock	(499,442)	$ (210)	(61,001)	(438,231)
Employee stock purchase plan (in shares)		35,795
Employee stock purchase plan	1,919	$ 1	1,918
Fresh start valuation adjustment for SFOT units purchased	32			32
Change in redemption value of partnership units	(8,715)		(8,715)
Net income attributable to Six Flags Entertainment Corporation	273,816			273,816
Other comprehensive income (loss), net of tax	3,303				3,303
Ending Balance (in shares) at Dec. 31, 2017		84,488,433
Ending Balance at Dec. 31, 2017	(505,112)	$ 2,112	1,086,265	(1,529,608)	(63,881)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock (in shares)		1,264,497
Issuance of common stock	41,657	$ 31	41,626
Stock-based compensation	(46,684)		(46,684)
Dividends declared to common shareholders	(265,755)			(265,755)
Repurchase of common stock (in shares)		(1,827,991)
Repurchase of common stock	(110,990)	$ (45)	(14,341)	(96,604)
Employee stock purchase plan (in shares)		37,243
Employee stock purchase plan	2,048	$ 1	2,047
Fresh start valuation adjustment for SFOT units purchased	80			80
Change in redemption value of partnership units	(31,273)		(31,273)
Change in redemption value of partnership units	(31,273)
Net income attributable to Six Flags Entertainment Corporation	275,996			275,996
Other comprehensive income (loss), net of tax	1,822				1,822
Ending Balance (in shares) at Dec. 31, 2018		83,962,182
Ending Balance at Dec. 31, 2018	$ (643,093)	$ 2,099	$ 1,037,640	$ (1,611,334)	$ (71,498)

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flow from operating activities:
Net income	$ 316,003	$ 313,026	$ 156,727
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	115,693	111,671	106,893
Stock-based compensation	(46,684)	(22,697)	116,339
Interest accretion on notes payable	1,344	1,056	413
Loss on debt extinguishment	0	37,116	2,935
Amortization of debt issuance costs	3,979	4,061	4,503
Other, including loss on disposal of assets	574	6,875	992
Increase in accounts receivable	(39,193)	(3,108)	(6,157)
Increase in inventories, prepaid expenses and other current assets	(3,769)	(1,847)	(4,948)
Decrease (increase) in deposits and other assets	1,633	(3,597)	(2,011)
(Decrease) increase in accounts payable, deferred revenue, accrued liabilities and other long-term liabilities	(13,750)	5,478	16,134
Increase (decrease) in accrued interest payable	4,409	(1,396)	8,129
Deferred income tax expense (benefit)	72,893	(1,571)	63,286
Net cash provided by operating activities	413,132	445,067	463,235
Cash flow from investing activities:
Additions to property and equipment	(135,624)	(135,219)	(129,258)
Property insurance recovery	2,500	523	320
Purchase of identifiable intangible assets	0	0	(125)
Acquisition of theme park assets	(19,059)	0	0
Sale (purchase) of restricted-use investments, net	0	3,926	(890)
Proceeds from sale of assets	71	607	2,212
Net cash used in investing activities	(152,112)	(130,163)	(127,741)
Cash flow from financing activities:
Repayment of borrowings	(274,000)	(949,161)	(333,426)
Proceeds from borrowings	356,000	1,313,000	481,170
Payment of debt issuance costs	(793)	(37,336)	(6,278)
Net proceeds from issuance of common stock	43,705	62,502	36,501
Stock repurchases	(110,990)	(499,442)	(211,751)
Payment of cash dividends	(267,044)	(227,101)	(220,314)
Purchase of redeemable noncontrolling interest	(353)	(128)	(223)
Noncontrolling interest distributions	(40,007)	(39,210)	(38,425)
Net cash used in financing activities	(293,482)	(376,876)	(292,746)
Effect of exchange rate on cash	(426)	2,083	(5,123)
(Decrease) increase in cash and cash equivalents	(32,888)	(59,889)	37,625
Cash and cash equivalents at beginning of period	77,496	137,385	99,760
Cash and cash equivalents at end of period	44,608	77,496	137,385
Supplemental cash flow information
Cash paid for interest	98,302	96,045	69,320
Cash paid for income taxes	$ 30,009	$ 14,473	$ 17,267

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Description of Business

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business

Description of Business

We own and operate regional theme and waterparks and are the largest regional theme park operator in the world and the largest operator of waterparks in North America. Of the 25 parks we currently own or operate, 22 parks are located in the United States, two parks are located in Mexico and one park is located in Montreal, Canada.

On April 1, 1998, we acquired the former Six Flags Entertainment Corporation ("Former SFEC", a corporation that has been merged out of existence and that has always been a separate corporation from the current Six Flags Entertainment Corporation ("Holdings")), which had operated regional theme parks and waterparks under the Six Flags name for nearly 40 years, and established an internationally recognized brand name. We own the "Six Flags" brand name in the United States and foreign countries throughout the world. To capitalize on this name recognition, 21 of our current parks are branded as "Six Flags" parks and beginning in 2014 we also began the development, with third-party partners, of Six Flags-branded parks outside of North America.

XML

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

a. Basis of Presentation

The consolidated financial statements include our accounts and the accounts of our wholly owned subsidiaries. We also consolidate the partnerships that own Six Flags Over Texas ("SFOT") and Six Flags Over Georgia (including Six Flags White Water Atlanta) ("SFOG", and together with SFOT, the "Partnership Parks") as subsidiaries in our consolidated financial statements as we have determined that we have the power to direct the activities of those entities that most significantly impact the entities' economic performance and we have the obligation to absorb losses and receive benefits from the entities that can be potentially significant to these entities. The equity interests owned by non-affiliated parties in the Partnership Parks are reflected in the accompanying consolidated balance sheets as redeemable noncontrolling interests. The portion of earnings or loss attributable to non-affiliated parties in the Partnership Parks is reflected as net income attributable to noncontrolling interests in the accompanying consolidated statements of operations. See Note 6 for further discussion.

Intercompany transactions and balances have been eliminated in consolidation.

b. Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. We evaluate our estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which we believe to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods.

c. Fair Value Measurement

Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 820, Fair Value Measurement, defines fair value as the exchange prices that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The guidance also specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumptions. In accordance with FASB ASC Topic 820, Fair Value Measurement, these two types of inputs have created the following fair value hierarchy:

• Level 1: quoted prices in active markets for identical assets;

• Level 2: inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the instrument; and

• Level 3: inputs to the valuation methodology are unobservable for the asset or liability.

The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. We use a market approach for our recurring fair value measurements, and we endeavor to use the best information available. Accordingly, valuation techniques that maximize the use of observable impacts are favored. We present the estimated fair values and classifications of our financial instruments in accordance with FASB Accounting Standards Consideration ("ASC") Topic 820, Fair Value Measurement.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments:

• The carrying values of cash and cash equivalents, accounts receivable, notes receivable, accounts payable and accrued liabilities approximate fair value because of the short maturity of these instruments.

• The measurement of the fair value of long-term debt is based on market prices that generally are observable for similar liabilities at commonly quoted intervals and is considered a Level 2 fair value measurement. Refer to Note 7 for additional information.

d. Cash Equivalents

Cash equivalents consists of short-term highly liquid investments with a remaining maturity as of the date of purchase of three months or less, which are readily convertible into cash. For purposes of the consolidated statements of cash flows, we consider all highly liquid debt instruments with remaining maturities as of their date of purchase of three months or less to be cash equivalents. Cash equivalents were not significant as of December 31, 2018 and 2017.

e. Inventories

Inventories are stated at lower of weighted average cost or net realizable value and primarily consist of products purchased for resale, including merchandise, food and miscellaneous supplies. Products are removed from inventory at weighted average cost. We have recorded a nominal valuation allowance for slow moving inventory as of December 31, 2018 and $0.3 million as of December 31, 2017.

f. Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets include $22.9 million and $21.1 million of spare parts inventory for existing rides and attractions as of December 31, 2018 and 2017, respectively. These items are expensed as the repair or maintenance of rides and attractions occur.

g. Advertising Costs

Production costs of commercials and programming are charged to operations in the year first aired. The costs of other advertising, promotion, and marketing programs are charged to operations when incurred with the exception of direct-response advertising which is charged to the period it will benefit. As of December 31, 2018 and 2017, we had $1.6 million and $1.9 million in prepaid advertising, respectively. The amounts capitalized are included in prepaid expenses.

Advertising and promotions expense was $68.4 million, $63.7 million and $62.8 million for the years ended December 31, 2018, 2017 and 2016, respectively.

h. Debt Issuance Costs

We capitalize costs related to the issuance of debt. Debt issuance costs directly related to our Revolving Loan are presented within other assets as debt issuance costs in our consolidated balance sheets. Debt issuance costs directly related to our Amended and Restated Term Loam B and our senior unsecured notes are presented within noncurrent liabilities as a reduction of long-term debt in our consolidated balance sheets. The amortization of such costs is recognized as interest expense using the interest method over the term of the respective debt issue. Amortization related to deferred debt issuance costs was $4.0 million, $4.1 million and $4.5 million for the years ended December 31, 2018, 2017 and 2016 respectively. See Note 7 for further discussion.

i. Property and Equipment

Property and equipment additions are recorded at cost and the carrying value is depreciated using the straight-line method over the estimated useful lives of the assets. Maintenance and repair costs that do not improve service potential or extend economic life are charged directly to expense as incurred, while betterments and renewals are generally capitalized as property and equipment. When an item is retired or otherwise disposed of, the cost and applicable accumulated depreciation are removed and the resulting gain or loss is recognized. See Note 4 for further detail of the components of our property and equipment.

The estimated useful lives of the assets are as follows:

Rides and attractions	5 - 25 years
Land improvements	10 - 15 years
Buildings and improvements	Approximately 30 years
Furniture and equipment	5 - 10 years

j. Goodwill and Indefinite-Lived Intangible Assets

Goodwill and intangible assets with indefinite useful lives are tested for impairment annually, or more frequently if events or circumstances indicate that the assets might be impaired. We identify our reporting unit and determine the carrying value of the reporting unit by assigning the assets and liabilities, including the existing goodwill and intangible assets, to the reporting unit. We then determine the fair value of the reporting unit and compare it to the carrying amount of the reporting unit. All of our parks are operated in a similar manner and have comparable characteristics in that they produce and distribute similar services and products using similar processes, have similar types of customers, are subject to similar regulations and exhibit similar economic characteristics. As such, we are a single reporting unit. For each year, the fair value of the single reporting unit exceeded our carrying amount (provided that, we have one reporting unit at the same level for which our Holdings common stock is traded, we believe our market capitalization is the best indicator of our reporting unit's fair value). In September 2012, the FASB amended FASB ASC Topic 350, Intangibles - Goodwill and Other, which permits entities to perform a qualitative analysis on indefinite-lived intangible assets to determine if it is more likely than not that the fair value of the intangible asset was less than its carrying amount as a basis for determining whether it was necessary to perform a quantitative impairment test. We adopted this amendment in September 2012 and have performed a qualitative analysis on our indefinite-lived intangible assets during the fourth quarter of each year.

The fair value of indefinite-lived intangible assets is generally determined based on a discounted cash flow analysis. An impairment loss occurs to the extent that the carrying value exceeds the fair value. For goodwill, if the fair value of the reporting unit were to be less than the carrying amount, an impairment loss would be recognized to the extent that the carrying amount of the reporting unit exceeds its fair value.

k. Valuation of Long-Lived Assets

We review long-lived assets, including finite-lived intangible assets subject to amortization, for impairment upon the occurrence of events or changes in circumstances that would indicate that the carrying value of the asset or group of assets may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset or group of assets to the future net cash flows expected to be generated by the asset or group of assets. If such assets are not considered to be fully recoverable, any impairment to be recognized is measured by the amount by which the carrying amount of the asset or group of assets exceeds its respective fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.

l. Revenue Recognition

FASB ASC 606, Revenue from Contracts with Customers (together with the series of Accounting Standards Updates described in the first paragraph under "Recently Adopted Accounting Pronouncements" below, "Topic 606") is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects consideration to which the entity expects to be entitled in exchange for those goods or services.

We recognize revenue upon admission into our parks, provision of our services or when products are delivered to our guests. Revenues are presented in the accompanying consolidated statements of operations net of sales taxes collected from our guests and remitted or payable to government taxing authorities. In contrast to our season pass and other multi-use offerings (such as our all season dining pass program, which enables season pass holders and members to eat meals and snacks any day they visit the park for one upfront payment) that expire at the end of each operating season, the membership program continues on a month-to-month basis after the initial twelve-month membership term and can be canceled any time after the initial term pursuant to the terms of the membership program. Guests enrolled in the membership program can visit our parks an unlimited number of times anytime they are open as long as the guest remains enrolled in the membership program. For season passes, memberships in the initial twelve-month term and other multi-use admissions, we estimate a redemption rate based on historical experience and other factors and assumptions we believe to be customary and reasonable and recognize a pro-rata portion of the revenue as the guest attends our parks. We review the estimated redemption rate regularly and on an ongoing basis and revise it as necessary throughout the year. Amounts received for multi-use admissions in excess of redemptions are recognized in deferred revenue. For active memberships after the initial twelve-month term, we recognize revenue monthly as payments are received. As of December 31, 2018, deferred revenue was primarily comprised of (i) advance sales of season passes, all season dining passes and other admissions for the 2019 operating season, (ii) unredeemed portions of the membership program that will be recognized in 2019, and (iii) sponsorship, international agreements and other fee-based revenue that will be recognized in 2019.

We have entered into international agreements to assist third parties in the planning, design, development and operation of Six Flags-branded parks outside of North America. These agreements typically consist of a brand licensing agreement, project services agreement, and management services agreement. Under Topic 606, we treat these agreements as one contract because each was negotiated with a single commercial objective. We have identified three distinct promises within the agreement with each third party partner as brand licensing, project services, and management services. Each of these promises is its own performance obligation and distinct as the third party could benefit from each service on its own with other readily available resources and each service is separately identifiable from other services in the context of the contract. We recognize revenue under our international agreements over the relevant service period of each performance obligation based on its relative stand-alone selling price, as determined by our best estimate of selling price. We review the service period of each performance obligation on an ongoing basis and revise it as necessary throughout the year. Revisions to the relevant service periods of the performance obligations may result in revisions to revenue in future periods and are recognized in the period in which the change is identified.

On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under FASB ASC 605, Revenue Recognition ("Topic 605"). See Note 3 for additional information.

m. Accounts Receivable, Net

Accounts receivable are reported at net realizable value and consist primarily of amounts due from guests for the sale of group outings and multi-use admission products, including season passes and the membership program. We are not exposed to a significant concentration of credit risk, however, based on the age of the receivables, our historical experience and other factors and assumptions we believe to be customary and reasonable, we do record an allowance for doubtful accounts. As of December 31, 2018 and 2017, we have recorded an allowance for doubtful accounts of $7.4 million and $4.2 million, respectively. The allowance for doubtful accounts is primarily comprised of estimated defaults under our membership plans.

n. Derivative Instruments and Hedging Activities

We account for derivatives and hedging activities in accordance with FASB ASC Topic 815, Derivatives and Hedging. This accounting guidance establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts, and for hedging activities. It requires an entity to recognize all derivatives as either assets or liabilities in the consolidated balance sheet and measure those instruments at fair value. If certain conditions are met, a derivative may be specifically designated as a hedge for accounting purposes. The accounting for changes in the fair value of a derivative (e.g., gains and losses) depends on the intended use of the derivative and the resulting designation.

We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and our strategy for undertaking various hedge transactions. This process includes linking all derivatives that are designated as cash flow hedges to forecasted transactions. We also assess, both at the hedge's inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items.

Change in the fair value of a derivative that is effective and that is designated and qualifies as a cash-flow hedge are recorded in other comprehensive income (loss) until operations are affected by the variability in cash flows of the designated hedged item, at which point they are reclassified to interest expense. Change in fair value of a derivative that is not designated as a hedge are recorded in other income (expense), net in the consolidated statements of operations on a current basis. As of December 31, 2017, the interest rate swap agreements expired and all related amounts previously held as derivative assets and liabilities on the consolidated balance sheets and previously recorded in accumulated other comprehensive income were realized in earnings.

o. Commitments and Contingencies

We are involved in various lawsuits and claims that arise in the normal course of business. Amounts associated with lawsuits or claims are reserved for matters in which it is believed that losses are probable and can be reasonably estimated. In addition to matters in which it is believed that losses are probable, disclosure is also provided for matters in which the likelihood of an unfavorable outcome is at least reasonably possible but for which a reasonable estimate of loss or range of loss is not possible. Legal fees are expensed as incurred. See Note 14 for further discussion.

p. Income Taxes

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, including net operating loss and other tax carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date. We have a valuation allowance of $115.2 million and $113.5 million as of December 31, 2018 and 2017, respectively, due to uncertainties related to our ability to utilize some of our deferred tax assets, primarily consisting of certain state net operating loss and other tax carryforwards, before they expire. The valuation allowance was based on our estimates of taxable income by jurisdiction in which we operate and the period over which our deferred tax assets were recoverable. For the foreseeable future, we project taxable income that will allow for the utilization of all of our federal net operating loss carryforwards before they expire.

Our liability for income taxes is finalized as auditable tax years pass their respective statutes of limitations in the various jurisdictions in which we are subject to tax. However, these jurisdictions may audit prior years for which the statute of limitations is closed for the purpose of making an adjustment to our taxable income in a year for which the statute of limitations has not closed. Accordingly, taxing authorities of these jurisdictions may audit prior years of the group and its predecessors for the purpose of adjusting net operating loss carryforwards to years for which the statute of limitations has not closed.

We classify interest and penalties attributable to income taxes as part of income tax expense. As of December 31, 2018 and 2017, we had no accrued interest and penalties liability.

Because we do not permanently reinvest foreign earnings, United States deferred income taxes have been provided on unremitted foreign earnings to the extent that such foreign earnings are expected to be taxable upon repatriation.

On December 22, 2017, the Tax Act was signed into law. The Tax Act contained significant changes to corporate taxation, including reduction of the corporate tax rate from 35% to 21% effective January 1, 2018, limitation of the tax deduction for interest expense, limitation of the deduction for net operating losses and elimination of net operating loss carrybacks, one time taxation of offshore earnings at reduced rates, elimination of U.S. tax on foreign earnings (subject to certain important exceptions), new taxes concerning global intangible low-tax income (GILTI), immediate deductions for certain new investments instead of deductions for depreciation expense over time, and modifying or repealing many business deductions and credits including the limitation on deductions for certain executive compensation arrangements under Section 162(m) of the Internal Revenue Code. All corporation taxation aspects of the Tax Act are included in our year ended December 31, 2017 tax provision. See Note 10 for further discussion.

q. Earnings Per Common Share

Basic earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding during the period including the effect of all dilutive common stock equivalents using the treasury stock method. In periods for which there is a net loss, diluted loss per common share is equal to basic loss per common share, since the effect of including any common stock equivalents would be antidilutive.

r. Stock-Based Compensation

Pursuant to the Six Flags Entertainment Corporation Long-Term Incentive Plan (the "Long-Term Incentive Plan"), Holdings may grant stock options, stock appreciation rights, restricted stock, restricted stock units, unrestricted stock, deferred stock units, performance and cash-settled awards and dividend equivalents to select employees, officers, directors and consultants of Holdings and its affiliates. We recognize the fair value of each grant as compensation expense on a straight-line basis over the vesting period using the graded vesting terms of the respective grant. The fair value of stock option grants is estimated on the date of grant using the Black-Scholes option pricing valuation model. The fair value of stock, restricted stock units and restricted stock awards is the quoted market price of Holdings' stock on the date of grant. See Note 9 for further discussion of stock-based compensation and related disclosures.

s. Comprehensive Income

Comprehensive income consists of net income, changes in the foreign currency translation adjustment, changes in the fair value of derivatives that are designated as hedges and changes in the net actuarial gains (losses) and amortization of prior service costs on our defined benefit retirement plan.

t. Redeemable Noncontrolling Interest

We record the carrying amount of our redeemable noncontrolling interests at their fair value at the date of issuance. We recognize the changes in their redemption value immediately as they occur and adjust the carrying value of these redeemable noncontrolling interests to equal the redemption value at the end of each reporting period, if greater than the redeemable noncontrolling interest carrying value.

This method would view the end of the reporting period as if it were also the redemption date for the redeemable noncontrolling interests. We conduct an annual review to determine if the fair value of the redeemable units is less than the redemption amount. If the fair value of the redeemable units is less than the redemption amount, there would be a charge to earnings per share allocable to common stockholders. The redemption amount at the end of each reporting period did not exceed the fair value of the redeemable units.

u. Acquisition of Park Assets

On May 22, 2018, we entered into an asset purchase agreement with Premier Parks, LLC and its affiliates to acquire the lease rights to operate five parks owned by EPR Properties, LLC (the "five new parks"). We completed the transaction on June 1, 2018. In connection with the purchase agreement, we entered into operating leases with EPR Properties, LLC, under which we are the tenant. The five new parks were previously operated by Premier Parks, LLC of Oklahoma City and its affiliates. These acquisitions expanded our portfolio of parks in North America to twenty-five. The financial results of the five new parks since the acquisition date are included in our consolidated statements of operations. Assets acquired and liabilities assumed, consisting primarily of working capital, are reflected in our consolidated financial statements. We paid $19.1 million in cash to Premier Parks, LLC for the five new parks, which reflects the $23.0 million purchase price, less net working capital and other adjustments. We recorded $29.4 million of goodwill in connection with the acquisition, which is attributable to the excess of the purchase price over the net working capital liabilities we assumed.

v. Recently Adopted Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). The amendments in ASU 2014-09 provide for a single, principles-based model for revenue recognition that replaces the existing revenue recognition guidance. In August 2015, the FASB issued Accounting Standards Update 2015-14, Revenue from Contracts with Customers - Deferral of the Effective Date ("ASU 2015-14"), to defer the effective date of ASU 2014-09 for one year. The new guidance became effective for annual and interim periods beginning after December 15, 2017 and replaced most existing revenue recognition guidance under U.S. GAAP. In March and April 2016, the FASB issued Accounting Standards Update No. 2016-08 and No. 2016-10, Revenue from Contracts with Customers (Topic 606)and Principal versus Agent Considerations and Identifying Performance Obligations and Licensing, respectively (together, "ASU 2016-08/10"). The amendments in ASU 2016-08/10 state that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The effective date and transition requirements for the amendments in ASU 2016-08/10 are the same as the effective date and transition requirements in ASU 2015-14. ASU 2016 08/10 permits the use of either a retrospective or cumulative effect transition method, and early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. On January 1, 2018, we adopted Topic 606 using the modified retrospective transition method applied to those contracts with customers which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under FASB ASC 605, Revenue Recognition ("Topic 605"). Refer to Note 3 for additional information.

In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments ("ASU 2016-15"). The amendments in ASU 2016-15 address eight classification issues related to the statement of cash flows:

• debt repayment or debt extinguishment costs;

• settlement of zero-coupon bonds;

• contingent consideration payments made after a business combination;

• proceeds from insurance claims;

• proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies;

• distribution received from equity method investees;

• beneficial interests in securitization transactions; and

• separately identifiable cash flows and application of the predominance principle.

On January 1, 2018, we adopted ASU 2016-15 using a retrospective transition method to each period presented. The adoption of ASU 2016-15 did not result in a material impact to the presentation of our condensed consolidated statement of cash flows.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash ("ASU 2016-18"). The amendments in ASU 2016-18 require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The accounting effects of ASU 2016-18 did not result in a material impact to the presentation of our consolidated statement of cash flows.

In March 2017, the FASB issued Accounting Standards Update No. 2017-07, Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost ("ASU 2017-07"). The amendments in ASU 2017-07 require that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The amendments in ASU 2017-07 also require that an employer disaggregate the service cost component from the other components of net benefit cost. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The amendments in ASU 2017-07 should be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic post-retirement benefit cost in the consolidated statements of operations. On January 1, 2018, we adopted ASU 2017-07 using a retrospective transition method to each period presented. Accordingly, the service cost component of net periodic pension cost allocated to our park employees and corporate employees was included within "Operating expenses" and "Selling, general and administrative expenses," respectively, while the other cost components were included in "Other net periodic pension benefit" in the condensed consolidated statements of operations.

Certain prior year amounts in the consolidated statements of operations were reclassified to conform to current year presentation in connection with the adoption of ASU 2017-07. For the years ended December 31, 2017 and 2016, the Company reclassified $2.7 million and $0.7 million, respectively, from "Operating expenses" to "Other net periodic pension benefit." This amount represents the non-service cost component of net periodic pension costs allocable to our park level employees. For the years ended December 31, 2017 and 2016, the Company reclassified $0.6 million and $1.2 million, respectively, from "Selling, general and administrative expenses" to "Other net periodic pension benefit". This amount represents the non-service cost component of net periodic pension costs allocable to our corporate employees. A nominal amount of non-service cost components remains in "Other (income) expense, net" and is not reclassified to "Other net periodic pension benefit." These amounts directly relate to certain other parks that we no longer operate but continue to service pension benefits for former employees of those parks.

In February 2018, the FASB issued Accounting Standards Update No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02"). The amendments in ASU 2018-02 allow entities to reclassify from "Accumulated other comprehensive income" ("AOCI") to retained earnings "stranded" tax effects resulting from passage of the Tax Act. An entity that elects to reclassify these amounts must reclassify stranded tax effects related to the change in federal tax rate for all items accounted for in AOCI (e.g., employee benefits and cumulative translation adjustments). Entities may also elect to reclassify other stranded tax effects that relate to the Tax Act but do not directly relate to the change in the federal tax rate (e.g., state taxes). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance requiring the effect of a change in tax laws or rates to be included in income from operations is not affected. Upon adoption of ASU 2018-02, entities are required to disclose their policy for releasing the income tax effects from AOCI. ASU 2018-02 is effective for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The amendments in ASU 2018-02 may be applied retrospectively to each period in which the effect of the Tax Act is recognized or an entity may elect to apply the amendments in the period of adoption. On January 1, 2018, we elected to early adopt ASU 2018-02, and applied the amendments in the period of adoption. As a result, we reclassified $9.4 million of "stranded" tax effects of the Tax Act from "Accumulated other comprehensive loss" to "Accumulated deficit" as of January 1, 2018.

w. Recent Accounting Pronouncements Not Yet Adopted

In May 2016, FASB issued ASU No. 2016-02, Leases, ("Topic 842"), which requires a lessee to recognize assets and liabilities for leases with lease terms of more than 12 months. The recognition, measurement and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance (formerly capital) or operating lease. However, unlike current GAAP, which requires only capital leases to be recognized on the balance sheet, ASU 2016-02 will require all leases with an initial term greater than one year to be recognized on the balance sheet as a right-of-use asset and a lease liability. ASU 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is allowed. The standard provides for a transition method using a modified retrospective approach, which includes a number of optional practical expedients. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842) Targeted Improvements, which allows lessees to recognize and measure leases at the beginning of the period of adoption without modifying the comparative period financial statements.

The Company adopted ASU 2016-02 as of January 1, 2019 using the modified retrospective method as of the period of adoption. The Company has elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows the Company to carryforward the historical lease classification. The Company has made an accounting policy election to keep leases with an initial term of 12 months or less off the balance sheet. The Company will recognize those lease payments in the consolidated statements of operations on a straight-line basis over the lease term. Related to adoption of the new standard, the Company has implemented internal controls and a lease accounting technology system to enable the preparation of financial statements.

The Company currently expects the most significant impact will be the recognition of ROU assets and lease liabilities for operating leases with original terms of over one year where the Company is the lessee. The Company estimates adoption of the new lease standard will result in recognition of ROU assets and lease liabilities of between $200 million and $230 million, as of January 1, 2019. The Company does not expect a material impact on its consolidated statements of operations. The standard will not impact our debt covenant compliance under our current agreements.

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Revenue

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under Topic 605.

We recorded a net reduction to our opening "Accumulated deficit" of $4.9 million, net of taxes of $1.3 million as of January 1, 2018, to recognize the cumulative impact of adopting Topic 606, with the impact primarily related to our international agreements revenue. During the year ended December 31, 2018 we recognized $0.9 million less revenue as a result of applying Topic 606.

Revenue Recognition

Revenues are recognized when control of the promised goods or services is transferred to our customers in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. Sales and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. Incidental items that are immaterial in the context of the contract are recognized as expense.

In accordance with the new revenue standard disclosure requirements, the impact of adoption of Topic 606 on our condensed consolidated balance sheet as of December 31, 2018 was as follows:

(Amounts in thousands)	Balance at December 31, 2018
Balance Sheet	As Reported			Balances Without Adoption			Effect of Change Higher/(Lower)
Assets
Accounts receivable, net	$	116,043		$	121,209		$	(5,166	)
Liabilities
Deferred revenue	146,227			148,183			(1,956		)
Deferred income taxes	173,998			172,502			1,496
Stockholders' Deficit
Accumulated deficit	(1,611,334		)	(1,616,960		)	5,626
Total stockholders' deficit	(643,093		)	(648,719		)	5,626

The impact of adoption of Topic 606 on our consolidated statements of operations for the year ended December 31, 2018 was as follows:

(Amounts in thousands)	Year Ended December 31, 2018
Statement of Operations	As Reported		Balances Without Adoption		Effect of Change Higher/(Lower)
Revenues
Sponsorship, international agreements and accommodations	$	100,116	$	101,058	$	(942	)
Costs and expenses
Income tax expense	95,855		96,053		(198		)
Net income	275,996		276,740		(744		)

The following tables present our revenues disaggregated by contract duration for the years ended December 31, 2018, 2017 and 2016, respectively. Long-term and short-term contracts consist of our contracts with customers with terms greater than one year and less than or equal to one year, respectively. Sales and usage-based taxes are excluded from revenues.

(Amounts in thousands)	Year Ended December 31, 2018
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	115,612	$	25,383	$	71,589	$	212,584
Short-term contracts and other (a)	694,452		528,144		28,527		1,251,123
Total revenues	$	810,064	$	553,527	$	100,116	$	1,463,707

(Amounts in thousands)	Year Ended December 31, 2017
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	109,943	$	20,498	$	57,934	$	188,375
Short-term contracts and other (a)	631,332		504,084		35,283		1,170,699
Total revenues	$	741,275	$	524,582	$	93,217	$	1,359,074

(Amounts in thousands)	Year Ended December 31, 2016
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	88,594	$	12,610	$	53,670	$	154,874
Short-term contracts and other (a)	626,819		508,557		29,148		1,164,524
Total revenues	$	715,413	$	521,167	$	82,818	$	1,319,398

(a) Other revenues primarily include sales of single-use tickets and short-term transactional sales for which we have the right to invoice.

Long-term Contracts

Our long-term contracts consist of season passes with customers, sponsorship contracts and international agreements with third parties. We earn season pass revenue when our customers purchase a season pass for a fixed fee which entitles the customer to visit our parks, including certain waterparks, throughout the duration of the parks' operating season. Current year season passes classified as long-term contracts are sold in the year preceding the operating season to which they relate. We earn sponsorship revenue from separately-priced contracts with third parties pursuant to which we sell and advertise the third party's products within the parks in exchange for consideration. Advertisements may include, but are not limited to, banners, signs, radio ads, association with certain events, sponsorship of rides within our parks, and retail promotions. We earn international agreements revenue pursuant to arrangements in which we assist in the development and management of Six Flags-branded parks outside of North America. Within our international agreements, we have identified three distinct performance obligations as brand licensing, project services and management services. We do not consider revenue recognized for the performance obligations related to our long-form agreements to be significant, neither individually nor in the aggregate, to any period presented. In future filings, we will include such a statement in our revenue footnote, subject to modification as appropriate. Refer to Note 2 for additional information on our accounting for performance obligations in these contracts.

The transaction price for our long-term contracts is explicitly stated within the contracts. Our sponsorship contracts and international agreements may include estimated variable consideration such as penalties for delay in performance of contract terms, and certain volume-based discounts and rebates. There were not significant changes to our estimates of variable consideration. Our brand licensing and management services performance obligations include royalty payments and management fees, respectively, based on gross sales from Six Flags-branded parks. We have elected to apply the sales-based royalty exemption to the brand licensing performance obligation, and accordingly do not estimate revenue attributable to the gross sales-based royalty. We have also elected to apply the direct allocation exemption to the management services performance obligation and accordingly do not estimate revenue attributable to the gross sales based management fee.

We recognize season pass revenue in "Park admissions" over the estimated redemption rate as we believe this appropriately depicts the transfer of service to our customers. We estimate the redemption rate based on historical experience and other factors and assumptions that we believe to be customary and reasonable. We review the estimated redemption rate regularly, on an ongoing basis, and revise it as necessary throughout the year. Amounts received for multi-use admissions in excess of redemptions are recognized in "Deferred revenue." We recognize sponsorship and international agreements revenue over the term of the agreements, using the passage of time as a measure of complete satisfaction of the performance obligations in "Sponsorship, international agreements and accommodations." Amounts received for unsatisfied sponsorship and international agreements performance obligations are recognized in "Deferred revenue." As a result of the adoption of Topic 606, we recognized an increase to "Sponsorship, international agreements and accommodations" revenue previously recognized in prior periods of $0.9 million during the year ended December 31, 2018, respectively.

At January 1, 2018, $111.6 million of unearned revenue associated with outstanding long-term contracts was reported in "Deferred revenue," and $109.7 million was recognized as revenue for long-term contracts during the year ended December 31, 2018. As of December 31, 2018, the total unearned amount of revenue for remaining long-term contract performance obligations was $100.8 million. As of December 31, 2018, we expect to recognize estimated revenue for partially or wholly unsatisfied performance obligations on long-term contracts of approximately $167.4 million in 2019, $64.7 million in 2020, $48.6 million in 2021 and $30.7 million in 2022 and thereafter.

Short-term Contracts and Other

Our short-term contracts consist primarily of season passes and memberships with customers, certain sponsorship contracts and international agreements with third parties. We earn revenue from customer's purchase of our season pass and membership products, which entitles the customer to visit our parks, including certain waterparks, throughout the duration of the parks' operating season for a fixed fee. We earn sponsorship and international agreements revenue from contracts with third parties, pursuant to which we sell and advertise the third party's products within our parks on a short-term basis that generally coincides with our annual operating season, and pursuant to certain activities in connection with our international agreements. The transaction price for our short-term contracts is explicitly stated within the contracts.

We generally recognize revenue from short-term contracts over the passage of time, with the exception of season pass and membership revenues. We recognize season pass and membership revenues in "Park admissions" over the estimated redemption rate, as we believe this appropriately depicts the transfer of service to our customers. We estimate the redemption rate based on historical experience and other factors and assumptions we believe to be customary and reasonable. We review the estimated redemption rate regularly and on an ongoing basis and revise it as necessary throughout the year. Amounts received for multi-use admissions in excess of redemptions are recognized in "Deferred revenue". There was no change in the pattern of recognition for season pass and membership revenue during the year ended December 31, 2018 under Topic 606, as compared to historic accounting under Topic 605.

Other revenues consist primarily of revenues from single-use tickets for entrance to our parks, in-park services (such as the sale of food and beverages, merchandise, games and attractions, standalone parking sales and other services inside our parks), accommodations revenue, and other miscellaneous products and services. Due to the short-term transactional nature of such purchases, we apply the practical expedient to recognize revenue for single-use ticket sales, in-park services, accommodations, and other miscellaneous services and goods for which we have the right to invoice.

Arrangements with Multiple Performance Obligations

Our contracts with customers may include multiple performance obligations. For such arrangements, we allocate revenue to each performance obligation based on its relative standalone selling price. We generally determine standalone selling prices based on the observable prices charged to customers.

Practical Expedients and Exemptions

We generally expense (i) sales commissions when incurred, and (ii) certain costs to obtain a contract where the amortization period would have been one year or less. These costs are recorded within Selling, general and administrative expenses.

We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

For certain of our contracts that have an original expected length of one year or less, we use the practical expedient applicable to such contracts and do not consider the time value of money.

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Property and Equipment

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

As of December 31, 2018 and 2017, property and equipment was classified as follows:

	December 31,
(Amounts in thousands)	2018			2017
Land	$	221,616		$	221,345
Land improvements	251,295			236,135
Buildings and improvements	302,957			295,124
Rides and attractions	1,118,141			1,059,720
Equipment and other	310,669			283,563
Property and equipment, at cost	2,204,678			2,095,887
Accumulated depreciation	(950,996		)	(857,930		)
Property and equipment, net	$	1,253,682		$	1,237,957

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Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets

We assess goodwill and intangible assets with indefinite lives for impairment annually during the fourth quarter or when an event occurs or circumstances change that would indicate potential impairment. For the year ended December 31, 2018, we performed a qualitative analysis of our goodwill and indefinite-lived intangible assets and noted no indicators of impairment. Through that analysis, we determined that it is not likely that the carrying value of goodwill and indefinite-lived intangible assets exceeded their respective fair values. As of December 31, 2018 and 2017, the carrying amount of goodwill was $659.6 million and $630.2 million, respectively. We paid $19.1 million in cash to Premier Parks, LLC for the five new parks, which reflects the $23.0 million purchase price, less net working capital and other adjustments. We recorded $29.4 million of goodwill in connection with the acquisition, which is attributable to the excess of the purchase price over the net working capital liabilities we assumed. 

As of December 31, 2018 and 2017, intangible assets, net consisted of the following:

	As of December 31, 2018
(Amounts in thousands, except years)	Weighted-Average Remaining Amortization Period (Years)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Indefinite-lived intangible assets:
Trade names, trademarks and other		$	344,075	$	—		$	344,075
Finite-lived intangible assets:
Third party licensing rights	1.5	24,361		(20,821		)	3,540
Other	42.9	1,726		(312		)	1,414
Total intangible assets, net		$	370,162	$	(21,133	)	$	349,029

	As of December 31, 2017
(Amounts in thousands, except years)	Weighted-Average Remaining Amortization Period (Years)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Indefinite-lived intangible assets:
Trade names, trademarks and other		$	344,075	$	—		$	344,075
Finite-lived intangible assets:
Third party licensing rights	2.5	24,361		(18,419		)	5,942
Other	30.0	2,735		(1,165		)	1,570
Total intangible assets, net		$	371,171	$	(19,584	)	$	351,587

Amortization expense related to finite-lived intangible assets totaled $2.4 million, $2.5 million and 2.6 million for the years ended December 31, 2018, 2017 and 2016. respectively. We expect that amortization expense on our existing intangible assets subject to amortization for the succeeding five years and thereafter will approximate the following:

(Amounts in thousands)
For the year ending December 31:
2019	$	2,437
2020	1,048
2021	57
2022	57
2023	57
2024 and thereafter	1,298
	$	4,954

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Noncontrolling Interests, Partnership and Joint Ventures

12 Months Ended

Dec. 31, 2018

Noncontrolling Interest [Abstract]

Noncontrolling Interests, Partnership and Joint Ventures

Noncontrolling Interests, Partnerships and Joint Ventures

Redeemable Noncontrolling Interests

Redeemable noncontrolling interests represent the non-affiliated parties' share of the assets of the Partnership Parks that are less than wholly-owned: SFOT, SFOG and Six Flags White Water Atlanta, which is owned by the partnership that owns SFOG.

The following table presents a rollforward of redeemable noncontrolling interests in the Partnership Parks:

(Amounts in thousands)	SFOT			SFOG			Total
Balance at December 31, 2016	$	227,620		$	258,256		$	485,876
Fresh start accounting fair market value adjustment for purchased units	(32		)	—			(32		)
Purchases of redeemable units of SFOT	(128		)	—			(128		)
Change in redemption value of partnership units	133			8,582			8,715
Net income attributable to noncontrolling interests	19,701			19,509			39,210
Distributions to noncontrolling interests	(19,701		)	(19,509		)	(39,210		)
Balance at December 31, 2017	227,593			266,838			494,431
Fresh start accounting fair market value adjustment for purchased units	(80		)	—			(80		)
Purchases of redeemable units of SFOT	(353		)	—			(353		)
Change in redemption value of partnership units	16,596			14,677			31,273
Net income attributable to noncontrolling interests	20,086			19,921			40,007
Distributions to noncontrolling interests	(20,086		)	(19,921		)	(40,007		)
Balance at December 31, 2018	$	243,756		$	281,515		$	525,271

See Note 14 for a description of the partnership arrangements applicable to the Partnership Parks, the accounts of which are included in the accompanying consolidated financial statements. As of December 31, 2018, the redemption value of the noncontrolling partnership units in SFOT and SFOG equaled the carrying values.

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Long-Term Indebtedness

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Long-Term Indebtedness

Long-Term Indebtedness

Credit Facility

On December 20, 2011, we entered into a $1,135.0 million credit agreement (the "2011 Credit Facility") with several lenders including Wells Fargo Bank National Association, as administrative agent, and related loan and security documentation agents. The 2011 Credit Facility was comprised of a 5-year $200.0 million revolving credit loan facility (the "Revolving Loan"), a 5-year $75.0 million Tranche A Term Loan facility ("Term Loan A") and a 7-year $860.0 million Tranche B Term Loan facility ("Term Loan B" and together with the Term Loan A, the "Term Loans"). In certain circumstances, the Term Loan B could be increased by $300.0 million. The proceeds from the $935.0 million Term Loans were used, along with $15.0 million of existing cash, to retire the $950.0 million senior term loan from the prior facility. Interest on the 2011 Credit Facility accrued based on pricing rates corresponding with the senior secured leverage ratios of Six Flags Theme Parks Inc. ("SFTP") as set forth in the credit agreement.

On December 21, 2012, we entered into an amendment to the 2011 Credit Facility (the "2012 Credit Facility Amendment") that among other things, permitted us to (i) issue $800.0 million of senior unsecured notes (see 2021 Notes below), (ii) use $350.0 million of the proceeds of the senior unsecured notes to repay the $72.2 million that was outstanding under the Term Loan A and $277.8 million of the outstanding balance of the Term Loan B, (iii) use the remaining $450.0 million of proceeds for share repurchases and other corporate matters and (iv) reduce the interest rate payable on the Term Loan B by 25 basis points.

On December 23, 2013, we entered into an amendment to the 2011 Credit Facility (the "2013 Credit Facility Amendment") that reduced the overall borrowing rate on the Term Loan B by 50 basis points through (i) a 25 basis point reduction in the applicable margin from LIBOR plus 3.00% to LIBOR plus 2.75% and (ii) a 25 basis point reduction in the minimum LIBOR rate from 1.00% to 0.75%. Additionally, the 2013 Credit Facility Amendment permitted us to use up to $200.0 million of our excess cash on hand, over time, for general corporate purposes, including potential share repurchases.

On June 30, 2015, we amended and restated the 2011 Credit Facility (as amended by the 2012 Credit Facility Amendment and the 2013 Credit Facility Amendment, the "Amended and Restated Credit Facility"). The Amended and Restated Credit Facility is comprised of a $250.0 million revolving credit loan facility (the "Amended and Restated Revolving Loan") and a $700.0 million Tranche B Term Loan facility (the "Amended and Restated Term Loan B"). Additionally, the Amended and Restated Credit Facility increased the additional flexibility under the Amended and Restated Term Loan B to $350.0 million. In connection with entering into the Amended and Restated Credit Facility, we repaid the outstanding Term Loan B. The remaining proceeds from the Amended and Restated Credit Facility were used for share repurchases and payment of refinancing fees.

On June 16, 2016, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.75% to LIBOR plus 2.50%. We capitalized $1.0 million of debt issuance costs directly associated with the issuance of this amendment. Additionally, we used $150.0 million of the proceeds from the issuance of the 2024 Notes discussed below to reduce our borrowings under the Amended and Restated Term Loan B and recognized a loss on debt extinguishment of $2.4 million. The paydown of borrowings under the Amended and Restated Term Loan B eliminated any required quarterly amortization payments thereunder until its final maturity on June 30, 2022.

On December 20, 2016, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.50% to LIBOR plus 2.25%, with the elimination of the minimum LIBOR rate requirement. We capitalized a nominal amount of debt issuance costs directly associated with the issuance of this amendment and recognized a loss on debt extinguishment of $0.5 million.

On June 21, 2017, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.25% to LIBOR plus 2.00%. We capitalized $0.5 million of debt issuance costs directly associated with the issuance of this amendment and recognized a loss on debt extinguishment of 0.2 million.

On March 26, 2018, we entered into an amendment to the Amended and Restated Credit Facility that reduced the overall borrowing rate on the Amended and Restated Term Loan B by 25 basis points through a reduction in the applicable margin from LIBOR plus 2.00% to LIBOR plus 1.75%. We capitalized $0.5 million of debt issuance costs directly associated with the issuance of this amendment.

On April 18, 2018, we entered into an amendment to the Amended and Restated Credit Facility that increased our Amended and Restated Term Loan B borrowings by $39.0 million. We capitalized $0.3 million of debt issuance costs directly associated with the issuance of this amendment. The proceeds of the additional borrowings were used for general corporate purposes, including share repurchases.

As of December 31, 2018, $43.0 million under the Amended and Restated Revolving Loan was outstanding (excluding amounts reserved for letters of credit in the amount of $18.1 million). As of December 31, 2017, no amounts under the Amended and Restated Revolving Loan were outstanding (excluding amounts reserved for letters of credit in the amount of $18.7 million). Interest on the Amended and Restated Revolving Loan accrues at an annual rate of LIBOR plus an applicable margin with an unused commitment fee based on our senior secured leverage ratio. As of December 31, 2018 and 2017, the Amended and Restated Revolving Loan unused commitment fee was 0.375%. The principal amount of the Amended and Restated Revolving Loan is due and payable on June 30, 2020.

As of December 31, 2018 and 2017, $583.8 million and $544.8 million, respectively, was outstanding under the Amended and Restated Term Loan B. Interest on the Amended and Restated Term Loan B accrues at an annual rate of LIBOR plus an applicable margin, based on our consolidated leverage ratio. In April 2014, we entered into the Interest Rate Swap Agreements with a notional amount of $200.0 million to mitigate the risk of an increase in the LIBOR interest rate above the 0.75% minimum LIBOR rate in effect on the Term Loan B. The Interest Rate Swap Agreements continued to mitigate an increase in the LIBOR rate in effect on the Amended and Restated Term Loan B through December 2017. As of December 31, 2018 and 2017, the applicable interest rate on the Amended and Restated Term Loan B was 4.26% and 3.36%, respectively. Beginning on September 30, 2015, the Amended and Restated Term Loan B became payable in equal quarterly installments of $1.8 million, but the $150.0 million prepayment with proceeds from the 2024 Notes discussed below was applied to the quarterly amortization payments and eliminated the future quarterly amortization payments until maturity. All remaining outstanding principal of the Amended and Restated Term Loan B is due and payable on June 30, 2022.

Amounts outstanding under the Amended and Restated Credit Facility are guaranteed by Holdings, Six Flags Operations Inc. ("SFO") and certain of the domestic subsidiaries of SFTP (collectively, the "Loan Parties"). The Amended and Restated Credit Facility is secured by a first priority security interest in substantially all of the assets of the Loan Parties. The Amended and Restated Credit Facility agreement contains certain representations, warranties, affirmative covenants and financial covenants (specifically, (i) a minimum interest coverage covenant and (ii) a maximum senior leverage maintenance covenant). In addition, the Amended and Restated Credit Facility agreement contains restrictive covenants that, subject to certain exceptions, limit or restrict, among other things, the incurrence of indebtedness and liens, fundamental changes, restricted payments, capital expenditures, investments, prepayments of certain indebtedness, transactions with affiliates, changes in fiscal periods, modifications of certain documents, activities of the Company and SFO and hedging agreements, subject, in each case, to certain carve-outs.

2021 Notes, 2024 Notes and 2027 Notes

On December 21, 2012, Holdings issued $800.0 million of 5.25% senior unsecured notes due January 15, 2021 (the "2021 Notes"). The proceeds from the 2021 Notes were used to repay the $72.2 million that was outstanding under the Term Loan A and to repay $277.8 million of the outstanding balance of the Term Loan B. The remaining proceeds were used for share repurchases. Interest payments of $21.0 million were due semi-annually on January 15 and July 15 (except in 2013 when we only made one interest payment of $22.3 million on July 15).

On June 16, 2016, Holdings issued $300.0 million of 4.875% senior unsecured notes due July 31, 2024 (the "2024 Notes"). We capitalized $4.7 million of debt issuance costs directly associated with the issuance of the 2024 Notes. We used approximately $150.0 million of the proceeds from the issuance of the 2024 Notes to reduce our borrowings under the Amended and Restated Term Loan B. We used the remaining net proceeds of the sale of the 2024 Notes for general corporate and working capital purposes, which primarily included repurchases of our common stock.

On April 13, 2017, we issued an additional $700.0 million of 4.875% Senior Notes due July 31, 2024 (the "2024 Notes Add-on"). We capitalized $3.9 million of debt issuance costs directly associated with the issuance of the 2024 Notes Add-on. Interest payments of $24.4 million for the 2024 Notes and the 2024 Notes Add-on are due semi-annually on January 31 and July 31 of each year, with the exception of the first payment for the 2024 Notes on January 31, 2017, which was $9.1 million.

On April 13, 2017, we issued $500.0 million of 5.500% Senior Notes due April 15, 2027 (the "2027 Notes"). We capitalized $2.6 million of debt issuance costs directly associated with the issuance of the 2027 Notes. Interest payments of $13.8 million are due semi-annually on April 15 and October 15 of each year, with the exception of the first payment on October 15, 2017, which was $13.9 million.

A portion of the net proceeds from the issuance of the 2024 Notes Add-on and 2027 Notes was used to redeem all of the outstanding 2021 Notes and to satisfy and discharge the indenture governing the 2021 Notes, including to pay the accrued and unpaid interest to the redemption date, the related redemption premium on the 2021 Notes, and related fees and expenses. The remaining net proceeds were used for general corporate and working capital purposes, which primarily included repurchases of our common stock. In connection with the redemption of all of the outstanding 2021 Notes, in the second quarter of 2017 we recognized a loss on debt extinguishment of $36.9 million.

The 2024 Notes, the 2024 Notes Add-on and the 2027 Notes are guaranteed by the Loan Parties. The 2024 Notes, the 2024 Notes Add-on and the 2027 Notes contain restrictive covenants that, subject to certain exceptions, limit or restrict, among other things, the ability of the Loan Parties to incur additional indebtedness, create liens, engage in mergers, consolidations and other fundamental changes, make investments, engage in transactions with affiliates, pay dividends and repurchase capital stock. The 2024 Notes, the 2024 Notes Add-on and the 2027 Notes contain certain events of default, including payment defaults, breaches of covenants and representations, cross defaults to other material indebtedness, judgment, and changes of control and bankruptcy events of default.

Total Indebtedness Summary

As of December 31, 2018 and 2017, total debt consisted of the following:

	December 31,
(Amounts in thousands)	2018			2017
Amended and Restated Term Loan B	$	583,750		$	544,750
2027 Notes	500,000			500,000
2024 Notes	1,000,000			1,000,000
Amended and Restated Revolving Loan	43,000			—
Net discount	(6,792		)	(8,137		)
Deferred financing costs	(13,446		)	(15,435		)
Total debt	2,106,512			2,021,178
Less current portion	43,000			—
Total long-term debt	$	2,063,512		$	2,021,178

As of December 31, 2018, annual maturities of long-term debt, assuming no acceleration of maturities, were as follows:

(Amounts in thousands)
For the year ending December 31:
2019	$	—
2020	43,000
2021	—
2022	583,750
2023	—
2024 and thereafter	1,500,000
	$	2,126,750

Fair-Value of Long-Term Indebtedness

As of December 31, 2018 and December 31, 2017, the fair value of our long-term debt was $2,012.4 million and $2,057.1 million, respectively. The measurement of the fair value of long-term debt is based on market prices that are generally observable for similar liabilities at commonly quoted intervals and is considered a Level 2 fair value measurement.

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Selling, General and Administrative Expenses

12 Months Ended

Dec. 31, 2018

Selling, General and Administrative Expenses

Selling, General and Administrative Expenses

Selling, General and Administrative Expenses

Selling, general and administrative expenses comprised the following for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands)	2018		2017		2016
Park	$	129,335	$	129,090	$	124,019
Corporate	2,833		29,980		168,986
Total selling, general and administrative expenses	$	132,168	$	159,070	$	293,005

Corporate, selling, general and administrative expense includes a reversal of stock-based compensation expense of $46.7 million and $22.7 million for the years ended December 31, 2018 and 2017, respectively, and stock-based compensation expense of $116.3 million for the year ended December 31, 2016.

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Stock Benefit Plans

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Benefit Plans

Stock Benefit Plans

Pursuant to the Long-Term Incentive Plan, Holdings may grant stock options, stock appreciation rights, restricted stock, restricted stock units, unrestricted stock, deferred stock units, performance and cash-settled awards and dividend equivalents to select employees, officers, directors and consultants of Holdings and its affiliates. In May 2017, our stockholders approved amendments to the Long-Term Incentive Plan that increased the number of shares available for issuance under the Long-Term Incentive Plan by 4,000,000 shares.

During the years ended December 31, 2018, 2017, and 2016 we recognized stock-based compensation expense related to the Long-Term Incentive Plan, excluding of amounts related to our 2017 Performance Award, of $15.5 million, $16.9 million and $13.6 million, respectively.

As of December 31, 2018, options to purchase approximately 5,380,000 shares of common stock of Holdings and approximately 16,000 shares of restricted stock or restricted stock units were outstanding under the Long-Term Incentive Plan and approximately 5,086,000 shares were available for future grant.

Stock Options

Options granted under the Long-Term Incentive Plan are designated as either incentive stock options or non-qualified stock options. Options are generally granted with an exercise price equal to the fair market value of the common stock of Holdings on the date of grant. While certain stock options are subject to acceleration in connection with a change in control, options are generally cumulatively exercisable in four equal annual installments commencing one year after the date of grant with a ten-year term. Generally, the unvested portion of stock option awards is forfeited upon termination of employment. Stock option compensation is recognized over the vesting period using the graded vesting terms of the respective grant.

The estimated fair value of the majority of our options granted was calculated using the Black-Scholes option pricing valuation model. This model takes into account several factors and assumptions. The risk-free interest rate is based on the yield on United States Treasury zero-coupon issues with a remaining term equal to the expected term assumption at the time of grant. We have sufficient historical data to develop an expected term assumption and we calculated the expected term using a mid-point scenario with a one-year grant date filter to exclude grants for which vesting could not have yet occurred. Expected volatility is based three-fourths on the term-matching historical volatility of our stock and one-fourth on the weighted-average implied volatility based on forward-looking pricing data on exchange-traded options for our stock. The expected dividend yield is based on our current quarterly dividend and a three-month average stock price. The fair value of stock options on the date of grant is expensed on a straight line basis over the requisite service period of the graded vesting term as if the award was, in substance, multiple awards.

The following weighted-average assumptions were utilized in the Black-Scholes model to value the stock options granted during the years ended December 31, 2018, 2017 and 2016:

	December 31, 2018				December 31, 2017				December 31, 2016
	CEO		Employees		CEO		Employees		CEO		Employees
Risk-free interest rate	2.52	%	2.67	%	1.64	%	1.56	%	1.05	%	1.00	%
Expected life (in years)	3.85		3.68		3.85		3.85		3.85		3.85
Expected volatility	23.20	%	22.51	%	21.89	%	22.70	%	24.30	%	23.17	%
Expected dividend yield	4.67	%	4.54	%	4.22	%	4.42	%	4.47	%	4.15	%

The following table summarizes stock option activity for the year ended December 31, 2018:

(Amounts in thousands, expect per share data)	Shares		Weighted Avg. Exercise Price ($)		Weighted Avg. Remaining Contractual Term	Aggregate Intrinsic Value ($)
Balance at December 31, 2017	5,185		$	43.78
Granted	1,451		$	65.71
Exercised	(1,094	)	$	38.08
Canceled or exchanged	(4	)	$	44.39
Forfeited	(158	)	$	52.46
Expired	—		$	—
Balance at December 31, 2018	5,380		$	50.60	7.47	$	43,141
Vested and expected to vest at December 31, 2018	5,140		$	50.16	7.40	$	42,780
Options exercisable at December 31, 2018	2,035		$	37.88	5.51	$	36,413

The following table presents the weighted average grant date fair value per share of the options granted, the total intrinsic value of options exercised, the total fair value of options that have vested, and the total cash received from the exercise of stock options during the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands, expect per share data)	2018		2017		2016
Weighted average grant date fair value of options granted	$	8.01	$	6.26	$	5.84
Total intrinsic value of options exercised	$	31,822	$	52,955	$	37,847
Total fair value of options that have vested	$	8,446	$	8,436	$	10,701
Total cash received from the exercise of stock options	$	41,658	$	60,583	$	34,680

As of December 31, 2018, there was $13.5 million of unrecognized compensation expense related to option awards. The weighted-average period over which that cost is expected to be recognized is 3.12 years.

Stock, Restricted Stock and Restricted Stock Units

Stock, restricted stock and restricted stock units granted under the Long-Term Incentive Plan may be subject to transfer and other restrictions as determined by the compensation committee of Holdings' Board of Directors. Generally, the unvested portion of restricted stock and restricted stock unit awards is forfeited upon termination of employment. The fair value of stock, restricted stock and restricted stock unit awards on the date of grant is expensed on a straight line basis over the requisite service period of the graded vesting term as if the award was, in substance, multiple awards.

During the year ended December 31, 2014, a performance award was established based on our goal to achieve Modified EBITDA of $600 million by 2017 (the "2017 Performance Award"). "Modified EBITDA” is defined as the Company’s consolidated income from continuing operations: excluding the cumulative effect of changes in accounting principles; discontinued operations gains or losses; income tax expense or benefit; restructure costs or recoveries; reorganization items (net); other income or expense; gain or loss on early extinguishment of debt; equity in income or loss of investees; interest expense (net); gain or loss on disposal of assets; gain or loss on the sale of investees; amortization; depreciation; stock-based compensation; and fresh start accounting valuation adjustments. As of December 31, 2018, we did not reach late achievement of the 2017 Performance Award goal and thus all previously recognized stock-based compensation associated with this award was reversed.

During the year ended December 31, 2016, an additional performance award was established based on our aspirational goal to achieve Modified EBITDA of $750 million by 2020 (the "2020 Performance Award"). The aggregate payout under the performance award to key employees if the target is achieved in 2020 would be 1,025,000 shares plus associated DERs but could be more or less depending on the level of achievement and the timing thereof. There has been no stock-based compensation expense recorded for this performance award because it is not deemed probable that we will achieve the specified performance targets as of December 31, 2018. Based on the closing market price of Holdings' common stock on the last trading day of the quarter ended December 31, 2018, the total unrecognized compensation expense related to this award at target achievement in 2020 is $63.2 million that will be expensed over the service period if it becomes probable of achieving the performance condition. The required growth rate, combined with the uncertainty of the timing of our international agreements revenue over the next few years has led us to revisit our medium-term outlook and conclude that on time achievement of the 2020 Performance Award is highly unlikely. We are now striving for late achievement of the target in 2021, with modest growth likely in 2019 and accelerating thereafter. We will continue to evaluate the probability of achieving the performance condition going forward and record the appropriate expense if necessary

The following table summarizes stock, restricted stock and restricted stock unit activity for the year ended December 31, 2018:

(Amounts in thousands, except per share amounts)	Shares		Weighted Average Grant Date Fair Value Per Share ($)
Non-vested balance at December 31, 2017	12		$	61.74
Granted	65		$	63.80
Vested	(61	)	$	63.42
Forfeited	—		$	—
Canceled	—		$	—
Non-vested balance at December 31, 2018	16		$	63.69

The following table presents the weighted average grant date fair value per share of stock awards granted, the total grant date fair value of stock awards granted, and the total fair value of stock awards that have vested during the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands, expect per share data)	2018		2017		2016
Weighted average grant date fair value of stock awards granted	$	63.80	$	61.74	$	51.46
Total grant date fair value of stock awards granted	$	4,185	$	750	$	68,207
Total fair value of stock awards that have vested	$	3,888	$	560	$	68,341

There was $0.3 million of total unrecognized stock-based compensation expense related to stock, restricted stock and restricted stock units as of December 31, 2018 that is expected to be recognized over a weighted-average period of 0.33 years.

Deferred Share Units

Non-employee directors can elect to receive the value of their annual cash retainer as a deferred share unit award ("DSU") under the Long-Term Incentive Plan whereby the non-employee director is granted DSUs in an amount equal to such director's annual cash retainer divided by the closing price of Holdings' common stock on the date of the annual stockholders meeting. Each DSU represents Holdings' obligation to issue one share of common stock. The shares are delivered approximately thirty days following the cessation of the non-employee director's service as a director of Holdings'.

DSUs generally vest consistent with the manner in which non-employee directors' cash retainers are paid. The fair value of the DSUs on the date of grant is expensed on a straight line basis over the requisite service period.

During each of the years ended December 31, 2018, 2017 and 2016, approximately 3,000 DSUs were granted at a weighted-average grant date fair value of $57.04, $56.32 and $54.16 per DSU, respectively. The total grant date fair value of DSUs granted was $0.2 million for the years ended December 31, 2018, 2017 and 2016.

As of December 31, 2018, there was no unrecognized compensation expense related to the outstanding DSUs.

Dividend Equivalent Rights

On February 8, 2012, Holdings' Board of Directors granted DERs to holders of unvested stock options, at which time, approximately 10.0 million unvested stock options were outstanding. The DERs accrue dividends as of the record date of each of Holdings' dividends that will be distributed to stock option holders upon the vesting of their stock option award. Holdings will distribute the accumulated accrued dividends pursuant to the DERs in either cash or shares of common stock. Generally, holders of stock options for fewer than 1,000 shares of stock will receive their accumulated accrued dividends in cash and holders of stock options for 1,000 shares of stock or greater will receive their accumulated accrued dividends in shares of common stock. In addition, Holdings' Board of Directors granted similar DERs payable in shares of common stock if and when any shares are granted under the 2020 Performance Award.

Holdings' Board of Directors granted approximately 1.5 million, 1.9 million and 1.3 million additional options to the majority of our full-time employees as well as DERs in connection with such options during the years ended December 31, 2018, 2017 and 2016, respectively. Exclusive of stock-based compensation recognized for the DER grants associated with the 2017 Performance Award discussed above, we recorded stock-based compensation for DER grants of $5.9 million, $4.2 million and $5.1 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Employee Stock Purchase Plan

The Six Flags Entertainment Corporation Employee Stock Purchase Plan (the "ESPP") allows eligible employees to purchase Holdings' common stock at 90% of the lower of the market value of the common stock at the beginning or end of each successive six-month offering period. Amounts accumulated through participants' payroll deductions ("purchase rights") are used to purchase shares of common stock at the end of each purchase period. Pursuant to the ESPP, no more than 2,000,000 shares of common stock of Holdings may be issued. Holdings' common stock may be issued by either authorized and unissued shares, treasury shares or shares purchased on the open market. As of December 31, 2018, we had 1,702,000 shares available for purchase pursuant to the ESPP.

In accordance with FASB ASC Topic 718, Stock Based Compensation, stock-based compensation related to purchase rights is recognized based on the intrinsic value of each respective six-month ESPP offering period. As of December 31, 2018 and 2017, no purchase rights were outstanding under the ESPP.

Stock-based compensation consisted of the following amounts for the years ended December 31, 2018, 2017 and 2016. We present separately the reversal of previously recorded stock-based compensation related to the 2017 Performance Award from our Long-Term Incentive Plan and Employee Stock Purchase Plan.

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Long-Term Incentive Plan
Options and Other	$	15,543		$	16,910		$	13,581
2017 Performance Award	(62,512		)	(39,935		)	102,447
Employee Stock Purchase Plan	285			328			311
Total stock-based compensation	$	(46,684	)	$	(22,697	)	$	116,339

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Income Taxes

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The following table summarizes the domestic and foreign components of our income before income taxes for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands)	2018		2017		2016
Domestic	$	383,875	$	301,322	$	216,205
Foreign	27,983		27,730		17,061
Income before income taxes	$	411,858	$	329,052	$	233,266

The following table summarizes the components of income tax expense (benefit) for the years ended December 31, 2018, 2017 and 2016:

(Amounts in thousands)	Current			Deferred			Total
2018:
U.S. federal	$	(58	)	$	65,976		$	65,918
Foreign	11,752			626			12,378
State and local	11,268			6,291			17,559
Income tax expense	$	22,962		$	72,893		$	95,855
2017:
U.S. federal	$	(72	)	$	(6,774	)	$	(6,846	)
Foreign	11,840			(2,231		)	9,609
State and local	5,829			7,434			13,263
Income tax expense (benefit)	$	17,597		$	(1,571	)	$	16,026
2016:
U.S. federal	$	(41	)	$	57,950		$	57,909
Foreign	6,206			(427		)	5,779
State and local	7,088			5,763			12,851
Income tax expense	$	13,253		$	63,286		$	76,539

Recorded income tax expense differed from amounts computed by applying the U.S. federal income tax rate of 21% for the year ended December 31, 2018 and 35% for the years ended December, 31, 2017 and 2016 to income before income taxes as a result of the following:

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Computed "expected" federal income tax expense	$	86,490		$	115,168		$	81,643
Effect of noncontrolling interest income distribution	(8,401		)	(13,724		)	(13,449		)
Change in valuation allowance	1,663			413			648
Effect of state and local income taxes, net of federal tax benefit	12,980			10,767			8,353
Deductible compensation in excess of book	(5,392		)	(13,757		)	—
Nondeductible compensation	1,167			2,201			2,127
Effect of foreign income taxes	4,544			2,367			380
Effect of foreign earnings earned and remitted in the same year	2,317			4,402			6,000
Effect of foreign tax credits	(996		)	(5,357		)	(9,405		)
Effect of Tax Reform, including change in valuation allowance of $20,824	—			(84,599		)	—
Other, net	1,483			(1,855		)	242
Income tax expense	$	95,855		$	16,026		$	76,539

In connection with emergence from Chapter 11, the Company's prepetition debt securities, primarily the prepetition notes issued by Six Flags, Inc. (which changed its corporate name to Six Flags Entertainment Corporation (Holdings) upon emergence from bankruptcy in 2010) and SFO, were extinguished. Absent an exception, a debtor recognizes cancellation of debt income ("CODI") upon discharge of its outstanding indebtedness for an amount of consideration that is less than its adjusted issue price. The Internal Revenue Code ("IRC") provides that a debtor in a bankruptcy case may exclude CODI from income but must reduce certain of its tax attributes by the amount of any CODI realized as a result of the consummation of a plan of reorganization. The amount of CODI realized by a taxpayer is the adjusted issue price of any indebtedness discharged less the sum of (i) the amount of cash paid, (ii) the issue price of any new indebtedness issued and (iii) the fair market value of any other consideration, including equity, issued. As a result of the market value of our equity upon emergence from Chapter 11 bankruptcy proceedings, we were able to retain a significant portion of our federal NOLs and state NOLs (collectively, the "Tax Attributes") after reduction of the Tax Attributes for CODI realized on emergence from Chapter 11. As a result of emergence from Chapter 11, the Company's NOLs were reduced by approximately $804.8 million of CODI.

Sections 382 and 383 of the IRC impose an annual limitation on the utilization of NOLs and other favorable Tax Attribute carryforwards that a corporation has at the time of a so-called "ownership change" within the meaning of IRC Section 382. The Company's issuance of stock pursuant to its reorganization under Chapter 11 resulted in such an ownership change. The limitation amount is the product of the value of the Company, computed under special rules that apply to a bankruptcy reorganization, and a published rate that applied for the month the Company emerged from Chapter 11. The Company's limitation amount is approximately $32.5 million for each year to which NOLs and other Tax Attribute carryforwards that existed at emergence are carried, increased by the portion of the net built-in income and gain that existed at emergence and that IRS pronouncements permit a taxpayer to treat as recognized during the five-year period following the ownership change. This has allowed the Company to increase its annual limitation by approximately $696.0 million through the end of 2015. Annual limitation amounts accumulate for future use to the extent they are not utilized in a given year. As a result of the Section 382 limitation, the Company may have a cash tax liability in future years even though its deferred tax assets have not been exhausted. A subsequent ownership change could further limit the Company's utilization of NOLs and other Tax Attributes if a smaller limitation resulted from the subsequent ownership change or applied to NOLs and other Tax Attributes accumulated after emergence from Chapter 11.

Substantially all of our future taxable temporary differences (deferred tax liabilities) relate to the different financial accounting and tax depreciation methods and periods for property and equipment (20 to 25 years for financial reporting purposes and 7 to 12 years for tax reporting purposes) and intangibles. Our net operating loss carryforwards, foreign tax credits, alternative minimum tax credits, accrued insurance expenses and deferred compensation amounts represent future income tax benefits (deferred tax assets). The following table summarizes the components of deferred income tax assets and deferred tax liabilities as of December 31, 2018 and 2017:

	December 31,
(Amounts in thousands)	2018		2017
Deferred tax assets	$	233,980	$	296,132
Less: Valuation allowance	115,172		113,509
Net deferred tax assets	118,808		182,623
Deferred tax liabilities	292,806		289,474
Net deferred tax liability	$	173,998	$	106,851

	December 31,
(Amounts in thousands)	2018		2017
Deferred tax assets:
Federal net operating loss carryforwards	$	19,334	$	49,543
State net operating loss carryforwards	117,236		119,837
Deferred compensation	6,873		21,464
Foreign tax credits	39,300		52,152
Alternative minimum tax credits	6,591		6,591
Accrued insurance, pension liability and other	44,646		46,545
Total deferred tax assets	$	233,980	$	296,132
Deferred tax liabilities:
Property and equipment	$	209,070	$	200,008
Intangible assets and other	83,736		89,466
Total deferred tax liabilities	$	292,806	$	289,474

As of December 31, 2018, we had approximately $0.2 billion and $5.5 billion of net operating loss carryforwards available for U.S. federal income tax and state income tax purposes, respectively, that expire through 2030 and 2038, respectively. Foreign tax credits of $39.3 million expire between 2020 and 2027. We have a valuation allowance of $115.2 million and $113.5 million as of December 31, 2018 and 2017, respectively, due to uncertainties related to our ability to utilize some of our deferred tax assets before they expire. The valuation allowance at December 31, 2018 and December 31, 2017 was based on our inability to use state deferred tax assets related to NOLs that were generated in states where we no longer do business or where we have consistently not generated taxable income. The change in valuation allowance is all attributable to income from operations.

Our unrecognized tax benefit as of each of December 31, 2018 and 2017 was $25.7 million. We classify interest and penalties attributable to income taxes as part of income tax expense. Due to the Company's NOL position, we have not accrued any penalties and interest.

Passage of the Tax Cuts and Jobs Act (H.R. 1) and Staff Accounting Bulletin No. 118

On December 22, 2017, the Tax Act was signed into law. The Tax Act contains significant changes to corporate taxation, including a reduction of the corporate tax rate from 35% to 21%, creating a territorial tax system, allowing for immediate expensing of certain qualified property, modifying or repealing many business deductions and credits, and providing other incentives. In response to the Tax Act, on December 22, 2017 the SEC staff issued Staff Accounting Bulletin No. 118 ("SAB 118"), to provide guidance for companies that are not able to complete their accounting for the income tax effects of the Tax Act in the period of enactment. The SEC Staff noted in SAB 118 that in these cases a company should continue to apply Topic 740, Income Taxes based on the provisions of the tax laws that were in effect immediately prior to the enactment of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the enactment date of the Tax Act for companies to complete the accounting under Topic 740. For the year ended December 31, 2018, the Company has not identified any material changes to the net one-time charge related to its accounting for the enactment of the Act. Accordingly, the Company has finalized its accounting treatment for the Act. For global intangible low taxed income ("GILTI") under the Act, the Company has elected to account for GILTI as a component of tax expense in the period in which the Company is subject to the rules (the "period cost method").

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Preferred Stock, Common Stock and Other Stockholders' Equity

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Preferred Stock, Common Stock and Other Stockholders' Equity

Preferred Stock, Common Stock and Other Stockholders' Equity

Common Stock

As of December 31, 2018, the number of authorized shares of common stock was 140,000,000, of which 83,962,182 shares were outstanding, 5,086,000 shares were reserved for future issuance through our Long-Term Incentive Plan, and 1,702,000 shares were reserved for future issuance through the ESPP. Pursuant to the ESPP, Holdings' common stock may be issued by either authorized and unissued shares, treasury shares or shares purchased on the open market.

On November 20, 2013, Holdings' Board of Directors approved a new stock repurchase program that permitted Holdings to repurchase up to $500.0 million in shares of Holdings' common stock over a four-year period (the "November 2013 Stock Repurchase Plan"). Holdings fully utilized the availability under the November 2013 Stock Repurchase Plan by August 2016. Throughout the program, Holdings repurchased 11,428,000 shares at a cumulative cost of approximately $500.0 million and an average price per share of $43.75.

On June 7, 2016, Holdings announced that its Board of Directors approved a new stock repurchase program that permitted Holdings to repurchase an incremental $500.0 million in shares of Holdings' common stock (the "June 2016 Stock Repurchase Plan"). Holdings fully utilized the availability under the June 2016 Stock Repurchase Plan by May 2017. Throughout the program, Holdings repurchased 8,392,000 shares at a cumulative cost of approximately $500.0 million and an average price per share of $59.58.

On March 30, 2017, Holdings announced that its Board of Directors approved a new stock repurchase plan that permits Holdings to repurchase an incremental $500.0 million in shares of Holdings' common stock (the "March 2017 Stock Repurchase Plan"). As of February 14, 2019, Holdings had repurchased 4,603,000 shares at a cumulative cost of approximately $268.2 million and an average price per share of $58.27 under the March 2017 Stock Repurchase Plan, leaving approximately $231.8 million available for permitted repurchases.

During the years ended December 31, 2018, 2017 and 2016, Holdings' Board of Directors declared and paid quarterly cash dividends per share of common stock as follows:

	Dividends Paid Per Share
2018:
Fourth Quarter	$	0.82
Third Quarter	$	0.78
Second Quarter	$	0.78
First Quarter	$	0.78
2017:
Fourth Quarter	$	0.70
Third Quarter	$	0.64
Second Quarter	$	0.64
First Quarter	$	0.64
2016:
Fourth Quarter	$	0.64
Third Quarter	$	0.58
Second Quarter	$	0.58
First Quarter	$	0.58

Preferred Stock

As of December 31, 2018, the number of authorized shares of preferred stock was 5,000,000, none of which have been issued or reserved for future issuance. The authorization of preferred shares empowers Holdings' Board of Directors, without further stockholder approval, to issue preferred shares with dividend, liquidation, conversion, voting or other rights which could adversely affect the voting power or other rights of the holders of Holdings' common stock. If issued, the preferred stock could also dilute the holders of Holdings' common stock and could be used to discourage, delay or prevent a change of control.

Accumulated Other Comprehensive (Loss) Income

The balances for each component of accumulated other comprehensive (loss) income are as follows:

	Currency Translation Adjustment			Cash Flow Hedges			Defined Benefit Plans			Income Taxes			Accumulated Other Comprehensive Income (Loss)
Balance as of December 31, 2015	$	(24,800	)	$	(1,598	)	$	(49,772	)	$	9,612		$	(66,558	)
Net current period change	(7,142		)	(944		)	4,881			965			(2,240		)
Amounts reclassified from AOCI	—			1,716			931			(1,033		)	1,614
Balance as of December 31, 2016	$	(31,942	)	$	(826	)	$	(43,960	)	$	9,544		$	(67,184	)
Net current period change	3,120			57			1,136			(2,106		)	2,207
Amounts reclassified from AOCI	—			769			865			(538		)	1,096
Balance as of December 31, 2017	$	(28,822	)	$	—		$	(41,959	)	$	6,900		$	(63,881	)
Net current period change	1,470			—			167			(351		)	1,286
Amounts reclassified from AOCI	—			—			721			(185		)	536
Effects of adoption of ASU 2018-02	—			—			—			(9,439		)	(9,439		)
Balance as of December 31, 2018	$	(27,352	)	$	—		$	(41,071	)	$	(3,075	)	$	(71,498	)

The Company had the following reclassifications out of accumulated other comprehensive income (loss) during the years ended December 31, 2018, 2017 and 2016:

	Location of	Amount of Reclassification from AOCI
	Reclassification	Year Ended December 31,
Component of AOCI	into Income	2018			2017			2016
		(Amounts in thousands)
Amortization of loss on interest rate hedge	Interest expense	$	—		$	769		$	1,716
	Income tax benefit	—			(279		)	(669		)
	Net of tax	$	—		$	490		$	1,047
Amortization of deferred actuarial loss and prior service cost	Operating expenses	$	721		$	865		$	931
	Income tax benefit	(185		)	(259		)	(364		)
	Net of tax	$	536		$	606		$	567
Total reclassifications		$	536		$	1,096		$	1,614

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Pension Benefits

12 Months Ended

Dec. 31, 2018

Retirement Benefits [Abstract]

Pension Benefits

Pension Benefits

As part of the acquisition of Former SFEC, we assumed the obligations related to the SFTP Defined Benefit Plan (the "SFTP Benefit Plan"). The SFTP Benefit Plan covered substantially all of SFTP's employees. During 1999, the SFTP Benefit Plan was amended to cover substantially all of our domestic full-time employees. During 2004, the SFTP Benefit Plan was further amended to cover certain seasonal workers, retroactive to January 1, 2003. The SFTP Benefit Plan permits normal retirement at age 65, with early retirement at ages 55 through 64 upon attainment of 10 years of credited service. The early retirement benefit is reduced for benefits commencing before age 62. Plan benefits are calculated according to a benefit formula based on age, average compensation over the highest consecutive five-year period during the employee's last ten years of employment and years of service. The SFTP Benefit Plan assets are invested primarily in equity and fixed income securities, as well as alternative investments, such as hedge funds. The SFTP Benefit Plan does not have significant liabilities other than benefit obligations. Under our funding policy, contributions to the SFTP Benefit Plan are determined using the projected unit credit cost method. This funding policy meets the requirements under the Employee Retirement Income Security Act of 1974.

We froze our pension plan effective March 31, 2006, pursuant to which most participants no longer earned future pension benefits. Effective February 16, 2009, the remaining participants in the pension plan no longer earned future benefits.

Obligations and Funded Status

The following table sets forth the change in our benefit plan obligation and fair value of plan assets:

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Change in benefit obligation:
Beginning balance	$	218,746		$	216,571		$	223,389
Interest cost	7,386			8,283			8,901
Actuarial loss (gain)	(16,324		)	11,402			(828		)
Benefits paid	(8,056		)	(17,510		)	(14,891		)
Benefit obligation at end of period	$	201,752		$	218,746		$	216,571
Change in fair value of plan assets:
Beginning balance	$	190,534		$	178,375		$	173,123
Actual return on assets	(2,497		)	25,240			15,949
Employer contributions	6,000			6,000			6,000
Administrative fees	(1,223		)	(1,571		)	(1,806		)
Benefits paid	(8,056		)	(17,510		)	(14,891		)
Fair value of plan assets at end of period	$	184,758		$	190,534		$	178,375

Employer contributions and benefits paid in the above table include only those amounts contributed directly to, or paid directly from, plan assets. As of December 31, 2018 and 2017, the SFTP Benefit Plan's projected benefit obligation exceeded the fair value of SFTP Benefit Plan assets resulting in the SFTP Benefit Plan being underfunded by $17.0 million and $28.2 million, respectively. The underfunded amount is recognized in other long-term liabilities in our consolidated balance sheets. Other net periodic pension benefit is disclosed within the consolidated statement of operations due to the adoption of ASU 2017-07.

We use December 31 as our measurement date. The weighted average assumptions used to determine benefit obligations are as follows:

	December 31,
	2018		2017
Discount rate	4.05	%	3.45	%
Rate of compensation increase	N/A		N/A

Net periodic benefit cost and other comprehensive income (loss)

The following table sets forth the components of net periodic benefit cost and other comprehensive income (loss):

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Net periodic benefit cost:
Service cost	$	1,300		$	1,700		$	2,400
Interest cost	7,386			8,283			8,901
Expected return on plan assets	(13,737		)	(12,831		)	(12,490		)
Amortization of net actuarial loss	721			865			931
Total net periodic benefit	$	(4,330	)	$	(1,983	)	$	(258	)
Other comprehensive income:
Current year actuarial gain	$	167		$	1,136		$	4,881
Recognized net actuarial loss	721			865			931
Total other comprehensive gain	$	888		$	2,001		$	5,812

As of December 31, 2018 and 2017, we have recorded $49.9 million (net of tax expense of $8.8 million) and $42.2 million (net of tax expense of $0.3 million) in accumulated other comprehensive loss in our consolidated balance sheets, respectively.

We anticipate that $0.8 million will be amortized from accumulated other comprehensive loss into net periodic benefit cost in 2019.

The weighted average assumptions used to determine net costs are as follows:

	Year Ended December 31,
	2018		2017		2016
Discount rate	3.45	%	3.90	%	4.10	%
Rate of compensation increase	N/A		N/A		N/A
Expected return on plan assets	7.25	%	7.25	%	7.25	%
Corridor	10.00	%	10.00	%	10.00	%
Average future life expectancy (in years)	27.77		26.33		27.79

The discount rate assumption was developed based on high-quality corporate bond yields as of the measurement date. High quality corporate bond yield indices on over 500 AA high grade bonds are considered when selecting the discount rate.

The return on plan assets assumption was developed based on consideration of historical market returns, current market conditions, and the SFTP Benefit Plan's past experience. Estimates of future market returns by asset category are reflective of actual long-term historical returns. Overall, it was projected that the SFTP Benefit Plan could achieve a 7.25% net return over time based on a consistent application of the existing asset allocation strategy and a continuation of the SFTP Benefit Plan's policy of monitoring manager performance.

Description of Investment Committee and Strategy

The Investment Committee is responsible for managing the investment of SFTP Benefit Plan assets and ensuring that the SFTP Benefit Plan's investment program is in compliance with all provisions of ERISA, other relevant legislation, related SFTP Benefit Plan documents and the Statement of Investment Policy. The Investment Committee has retained several mutual funds, commingled funds and/or investment managers to manage SFTP Benefit Plan assets and implement the investment process. The investment managers, in implementing their investment processes, have the authority and responsibility to select appropriate investments in the asset classes specified by the terms of the applicable prospectus or other investment manager agreements with the SFTP Benefit Plan.

The primary financial objective of the SFTP Benefit Plan is to secure participant retirement benefits. To achieve this, the key objective in the SFTP Benefit Plan's financial management is to promote stability and, to the extent appropriate, growth in funded status. Other related and supporting financial objectives are also considered in conjunction with a comprehensive review of current and projected SFTP Benefit Plan financial requirements.

The assets of the fund are invested to achieve the greatest reward for the SFTP Benefit Plan consistent with a prudent level of risk. The asset return objective is to achieve, as a minimum over time, the passively managed return earned by market index funds, weighted in the proportions outlined by the asset class exposures in the SFTP Benefit Plan's long-term target asset allocation.

The SFTP Benefit Plan's portfolio may be allocated across several hedge fund styles and strategies.

Plan Assets

The target allocations for plan assets are 9% domestic equity securities, 64% fixed income securities, 12% international equity securities, and 15% alternative investments. Equity securities primarily include investments in large-cap companies located in the United States and abroad. Fixed income securities include bonds and debentures issued by domestic and foreign private and governmental issuers. Alternative investments are comprised of hedge fund of funds. The following table presents the categories of our plan assets and the related levels of inputs in the fair value hierarchy used to determine the fair value, as defined in Note 2(c):

	Fair Value Measurements as of December 31, 2018
(Amounts in thousands)	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
ASSET CATEGORY:
Equity Securities:
Large-Cap Disciplined Equity (a)	$	22,022	$	22,022	$	—	$	—
International Equity (b)	15,894		15,894		—		—
Fixed Income:
Long Duration Fixed Income (c)	109,408		109,408		—		—
High Yield (d)	4,965		4,965		—		—
Emerging Markets Debt (e)	4,566		4,566		—		—
Alternatives:
Other Investments (f) (g)	27,903		—		—		—
Fair Value of Plan Assets	$	184,758	$	156,855	$	—	$	—

	Fair Value Measurements as of December 31, 2017
(Amounts in thousands)	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
ASSET CATEGORY:
Equity Securities:
Large-Cap Disciplined Equity (a)	$	27,765	$	27,765	$	—	$	—
Small/Mid-Cap Equity (a)	3,433		3,433		—		—
International Equity (b)	24,383		24,383		—		—
Fixed Income:
Long Duration Fixed Income (c)	95,650		95,650		—		—
High Yield (d)	8,559		8,559		—		—
Emerging Markets Debt (e)	5,001		5,001		—		—
Alternatives:
Other Investments (f) (g)	25,743		—		—		—
Fair Value of Plan Assets	$	190,534	$	164,791	$	—	$	—

________________________________________

(a) These categories are comprised of mutual funds actively traded on the registered exchanges or over the counter markets. The mutual funds are invested in equity securities of U.S. issuers.

(b) This category consists of mutual funds invested primarily in equity securities (common stocks, securities that are convertible into common stocks, preferred stocks, warrants and rights to subscribe to common stocks) of non-U.S. issuers purchased in foreign markets. The mutual funds are actively traded on U.S. or foreign registered exchanges, or the over-the-counter markets.

(c) The assets are comprised of U.S. Treasury Separate Trading of Registered Interest and Principal of Securities ("U.S. Treasury STRIPS") and mutual funds which are actively traded on the registered exchanges. The mutual funds are invested primarily in high quality government and corporate fixed income securities, as well as synthetic instruments or derivatives having economic characteristics similar to fixed income securities.

(d) The high yield portion of the fixed income portfolio consists of mutual funds invested primarily in fixed income securities that are rated below investment grade. The mutual funds are actively traded on the registered exchanges.

(e) The emerging debt portion of the portfolio consists of mutual funds primarily invested in the debt securities of government, government-related and corporate issuers in emerging market countries and of entities organized to restructure outstanding debt of such issuers. The mutual funds are actively traded on the registered exchanges.

(f) This category is comprised of investments in common collective trusts with the underlying assets invested in asset-backed securities, money market funds, corporate bonds and bank notes. The underlying assets are actively traded on the registered exchanges.

(g) Common/collective trust investments that are measured at fair value using the net asset value per share practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total fair value of plan assets. The Company has participant redemptions restricted to the last business day of the quarter, with either a 65 or 90 day period redemption notice.

The following table represents a rollforward of the December 31, 2017 balances of our plan assets that are valued using Level 3 inputs:

(Amounts in thousands)	Hedge Fund of Funds
Balance as of December 31, 2016	$	9,967
Actual return on plan assets:
Relating to assets still held at the reporting date	—
Relating to assets sold during the period	(9,967		)
Purchases, sales and settlements, net	—
Balance as of December 31, 2017	$	—

Expected Cash Flows

The following table summarizes expected employer contributions and future benefit payments:

(Amounts in thousands)
Expected contributions to plan trusts
2019	$	6,000
Total expected contributions	$	6,000
Expected benefit payments:
2019	$	9,823
2020	10,242
2021	10,649
2022	11,196
2023	11,547
2024 through 2028	61,609
Total expected benefit payments	$	115,066

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Earnings Per Common Share

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings Per Common Share

Basic earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding during the period and the effect of all dilutive common stock equivalents. In periods where there is a net loss, diluted loss per common share is equal to basic loss per common share, since the effect of including any common stock equivalents would be antidilutive.

For the years ended December 31, 2018, 2017 and 2016, the computation of diluted earnings per share included the effect of 1.3 million, 1.7 million and 2.0 million dilutive stock options and restricted stock units, respectively. For the years ended December 31, 2018, 2017 and 2016, the computation of diluted earnings per share excluded the effect of 0.7 million, 0.4 million and 0.4 million antidilutive stock options and restricted stock units, respectively. Earnings per common share for the years ended December 31, 2018, 2017 and 2016 was calculated as follows:

	For the year ended December 31,
(Amounts in thousands, except per share amounts)	2018		2017		2016
Net income attributable to Six Flags Entertainment Corporation common stockholders	$	275,996	$	273,816	$	118,302
Weighted-average common shares outstanding—basic	84,100		86,802		92,349
Effect of dilutive stock options and restricted stock units	1,345		1,692		2,049
Weighted-average common shares outstanding—diluted	85,445		88,494		94,398
Earnings per share—basic	$	3.28	$	3.15	$	1.28
Earnings per share—diluted	$	3.23	$	3.09	$	1.25

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Partnership Parks

On April 1, 1998, we acquired all of the capital stock of Former SFEC for $976.0 million, paid in cash. In addition to our obligations under outstanding indebtedness and other securities issued or assumed in the Former SFEC acquisition, we also guaranteed certain contractual obligations relating to the Partnership Parks. Specifically, we guaranteed the obligations of the general partners of those partnerships to (i) make minimum annual distributions (including rent) of approximately $72.5 million in 2019 (subject to cost of living adjustments) to the limited partners in the Partnership Parks (based on our ownership of units as of December 31, 2018, our share of the distribution will be approximately $31.7 million) and (ii) make minimum capital expenditures at each of the Partnership Parks during rolling five-year periods, based generally on 6% of the Partnership Parks' revenues. Cash flow from operations at the Partnership Parks is used to satisfy these requirements, before any funds are required from us. We also guaranteed the obligation of our subsidiaries to annually purchase all outstanding limited partnership units to the extent tendered by the unit holders (the "Partnership Park Put"). The agreed price for units tendered in the Partnership Park Put is based on a valuation of each of the respective Partnership Parks (the "Specified Price") that is the greater of (a) a valuation for each of the respective Partnership Parks derived by multiplying such park's weighted average four year EBITDA (as defined in the agreements that govern the partnerships) by a specified multiple (8.0 in the case of SFOG and 8.5 in the case of SFOT) and (b) a valuation derived from the highest prices previously paid for the units of the Partnership Parks by certain entities.  Pursuant to the valuation methodologies described in the preceding sentence, the Specified Price for the Partnership Parks, if determined as of December 31, 2018, is $408.3 million in the case of SFOG and $520.5 million in the case of SFOT. As of December 31, 2018, we owned approximately 31.0% and 53.2% of the Georgia limited partner interests and Texas limited partner interests, respectively. Our obligations with respect to SFOG and SFOT will continue until 2027 and 2028, respectively.

In 2027 and 2028, we will have the option to purchase all remaining units in the Georgia limited partner and the Texas limited partner, respectively, at a price based on the Specified Price, increased by a cost of living adjustment. Pursuant to the 2018 annual offer, we did not purchase any units from the Georgia partnership and we purchased 0.1750 units from the Texas partnership for approximately $0.4 million in May 2018. Pursuant to the 2017 annual offer, we did not purchase any units from the Georgia partnership and we purchased 0.0708 units from the Texas partnership for approximately $0.1 million in May 2017. As we purchase additional units, we are entitled to a proportionate increase in our share of the minimum annual distributions. The maximum unit purchase obligations for 2018 at both parks aggregated approximately $525.3 million, representing approximately 69.0% of the outstanding units of SFOG and 46.8% of the outstanding units of SFOT. The $350.0 million accordion feature on the Amended and Restated Term Loan B under the Amended and Restated Credit Facility is available for borrowing for future "put" obligations if necessary.

In connection with our acquisition of the Former SFEC, we entered into the Subordinated Indemnity Agreement with certain of the Company's entities, Time Warner and an affiliate of Time Warner, pursuant to which, among other things, we transferred to Time Warner (which has guaranteed all of our obligations under the Partnership Park arrangements) record title to the corporations which own the entities that have purchased and will purchase limited partnership units of the Partnership Parks, and we received an assignment from Time Warner of all cash flow received on such limited partnership units, and we otherwise control such entities. In addition, we issued preferred stock of the managing partner of the partnerships to Time Warner. In the event of a default by us under the Subordinated Indemnity Agreement or of our obligations to our partners in the Partnership Parks, these arrangements would permit Time Warner to take full control of both the entities that own limited partnership units and the managing partner. If we satisfy all such obligations, Time Warner is required to transfer to us the entire equity interests of these entities.

We incurred $21.2 million of capital expenditures at these parks during the 2018 season and intend to incur approximately $17 million of capital expenditures at these parks for the 2019 season, an amount in excess of the minimum required expenditure. Cash flows from operations at the Partnership Parks will be used to satisfy the annual distribution and capital expenditure requirements, before any funds are required from us. The Partnership Parks generated approximately $77.6 million of cash in 2018 from operating activities after deduction of capital expenditures and excluding the impact of short-term intercompany advances from or payments to Holdings. As of December 31, 2018 and 2017, we had total loans receivable outstanding of $239.3 million from the partnerships that own the Partnership Parks, primarily to fund the acquisition of Six Flags White Water Atlanta, and to make capital improvements and distributions to the limited partners in prior years.

Operating Leases

We lease under long-term leases the sites of Six Flags Mexico, Six Flags Hurricane Harbor Oaxtepec, La Ronde, Six Flags Hurricane Harbor Concord, Frontier City, White Water Bay, Six Flags Hurricane Harbor Phoenix, Six Flags Hurricane Harbor Splashtown, Six Flags Darien Lake and a small parcel near Six Flags New England. In certain cases, rent is based upon a percentage of the revenues earned by the applicable park. Under these leases, we recognized rental expense of approximately $18.6 million, $5.9 million and $5.1 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Total rental expense, including office space and park sites, was approximately $27.9 million, $16.1 million and $12.9 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Future minimum obligations under non-cancelable operating leases, including site leases, as of December 31, 2018, are summarized as follows:

(Amounts in thousands)
For the year ending December 31:
2019	$	23,936
2020	23,266
2021	22,384
2022	21,626
2023	21,563
2024 and thereafter	314,799
	$	427,574

License Agreements

We are party to a license agreement pursuant to which we have the exclusive right on a long-term basis to theme park use in the United States and Canada (excluding the Las Vegas, Nevada metropolitan area) of all animated, cartoon and comic book characters that Warner Bros. and DC Comics have the right to license for such use. The license fee is subject to periodic scheduled increases and is payable on a per-theme park basis.

In November 1999, we entered into license agreements pursuant to which we have the exclusive right on a long-term basis to parks use in Europe, Central and South America of all animated, cartoon and comic book characters that Warner Bros. and DC Comics have the right to license for such use. Under such agreements, the license fee is based on specified percentages of the gross revenues of the applicable parks.

Insurance

We maintain insurance of the types and in amounts that we believe are commercially reasonable and that are available to businesses in our industry. We maintain multi-layered general liability policies that provide for excess liability coverage of up to $100.0 million per occurrence. For incidents arising on or after December 31, 2008, our self-insured retention is $2.0 million, followed by a $0.5 million deductible per occurrence applicable to all claims in the policy year for our domestic parks and our park in Canada and a nominal amount per occurrence for our parks in Mexico. Defense costs are in addition to these retentions. Our general liability policies cover the cost of punitive damages only in certain jurisdictions. Based upon reported claims and an estimate for incurred, but not reported claims, we accrue a liability for our self-insured retention contingencies. For workers' compensation claims arising after November 15, 2003, our deductible is $0.75 million. We also maintain fire and extended coverage, business interruption, terrorism and other forms of insurance typical to businesses in this industry. The all peril property coverage policies insure our real and personal properties (other than land) against physical damage resulting from a variety of hazards. Additionally, we maintain information security and privacy liability insurance in the amount of $10.0 million with a $0.25 million self-insured retention per event.

We generally renegotiate our insurance policies on an annual basis. The majority of our current insurance policies expire on December 31, 2019. We cannot predict the level of the premiums that we may be required to pay for subsequent insurance coverage, the level of any self-insurance retention applicable thereto, the level of aggregate coverage available or the availability of coverage for specific risks.

Capital Expenditures

We currently plan on spending approximately 9% of annual revenues on capital expenditures during the 2019 calendar year.

Litigation

We are party to various legal actions arising in the normal course of business, including the cases discussed below. Matters that are probable of unfavorable outcome to us and which can be reasonably estimated are accrued. Such accruals are based on information known about the matters, our estimate of the outcomes of such matters and our experience in contesting, litigating and settling similar matters. None of the actions are believed by management to involve amounts that would be material to our consolidated balance sheets, results of operations or liquidity after consideration of recorded accruals.

On July 3, 2012, a civil action was commenced against us in the Superior Court of Solano County, California. The plaintiffs sought damages for personal injuries when a guest at Six Flags Discovery Kingdom jumped on a swinging gate arm that entered a passing tram carrying the plaintiffs on July 3, 2010. On October 24, 2014, the litigation was dismissed, without prejudice, with respect to one of the plaintiffs, a minor, who may reinstate the lawsuit at any time prior to two years following the date such plaintiff reaches the age of majority. In January 2015, an agreement was reached to settle the lawsuit with the remaining plaintiffs. We previously expensed the full amount of our $2.5 million self-insurance retention plus litigation costs in connection with this incident. Based on the passage of time without ongoing litigation and the advice of counsel, the accrual was reduced.

On January 7, 2016, a potential class action complaint was filed against Six Flags Entertainment Corporation in the Circuit Court of Lake County, Illinois. On April 22, 2016, Great America, LLC was added as a defendant. The complaint asserts that we violated the Illinois Biometric Information Privacy Act ("BIPA") in connection with the admission of season pass holders and members through the finger scan program that commenced in the 2014 operating season at Six Flags Great America in Gurnee, Illinois, and seeks statutory damages, attorney's fees and an injunction. An aggrieved party under BIPA may recover (i) $1,000 if a company is found to have negligently violated BIPA or (ii) $5,000 if found to have intentionally or recklessly violated BIPA, plus reasonable attorneys' fees in each case. The complaint does not allege that any information was misused or disseminated. On April 7, 2017, the trial court certified two questions for consideration by the Illinois Appellate Court of the Second District. On June 7, 2017, the Illinois Appellate Court granted our motion to appeal. Accordingly, two questions regarding the interpretation of BIPA were certified for consideration by the Appellate Court. On December 21, 2017, the Appellate Court found in our favor, holding that the plaintiff had to allege more than a technical violation of BIPA and had to be injured in some way in order to have a right of action. On March 1, 2018, the plaintiff filed a petition for leave to appeal to the Illinois Supreme Court. On May 30, 2018, the Illinois Supreme Court granted the plaintiff's leave to appeal and oral arguments were heard on November 20, 2018. On January 25, 2019, the Illinois Supreme Court found in favor of the plaintiff holding that the plaintiff does not need to allege an actual injury beyond the violation of his rights under BIPA in order to proceed with a complaint. We intend to continue to vigorously defend ourselves against this litigation. Since this litigation is still in an early stage, the outcome is currently not determinable, and a reasonable estimate of loss or range of loss in excess of the immaterial amount that we have recorded for this litigation cannot be made.

During 2017, four potential class action complaints were filed against Six Flags Entertainment Corporation or one of its subsidiaries. Complaints were filed on August 11, 2017 in the Circuit Court of Lake County, Illinois, on September 1, 2017 in the United States District Court for the Northern District of Georgia, on September 11, 2017 in the Superior Court of Los Angeles County, California, and on November 30, 2017 in the Superior Court of Ocean County, New Jersey. The complaints allege that we, in violation of federal law, printed more than the last five digits of a credit or debit card number on customers’ receipts, and/or the expiration dates of those cards. A willful violation may subject a company to liability for actual damages or statutory damages between $100 and $1,000 per person, punitive damages in an amount determined by a court, and reasonable attorneys’ fees, all of which are being sought by plaintiffs. The complaints do not allege that any information was misused. We intend to vigorously defend ourselves against this litigation. Since this litigation is in an early stage, the outcome is currently not determinable and a reasonable estimate of loss or range of loss in excess of the immaterial amount that we have recorded for this litigation cannot be made.

Tax and other contingencies

As of December 31, 2018 and 2017, we had a nominal amount of accrued liabilities for tax and other indemnification contingencies related to certain parks sold in previous years that could be recognized as recovery losses from discontinued operations in the future if such liabilities are not requested to be paid.

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Business Segments

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Business Segments

Business Segments

We manage our operations on an individual park location basis, including operations from parks owned, managed and branded. Discrete financial information is maintained for each park and provided to our corporate management for review and as a basis for decision making. The primary performance measures used to allocate resources is Park EBITDA (defined as park-related operating earnings, excluding the impact of interest, taxes, depreciation, amortization and any other non-cash income or expenditures). Primarily all of our parks provide similar products and services through a similar process to the same class of customer through a consistent method. We also believe that the parks share common economic characteristics. Based on these factors, we have only one reportable segment - parks.

The following table presents segment financial information and a reconciliation of net income to Park EBITDA. Park level expenses exclude all non-cash operating expenses, principally depreciation and amortization and all non-operating expenses.

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Net income	$	316,003		$	313,026		$	156,727
Interest expense, net	107,243			99,010			81,872
Income tax expense	95,855			16,026			76,539
Depreciation and amortization	115,693			111,671			106,893
Corporate expenses	48,679			52,105			51,435
Stock-based compensation	(46,684		)	(22,697		)	116,339
Non-operating park level expense, net:
Loss on disposal of assets	1,879			3,959			1,968
Loss on debt extinguishment, net	—			37,116			2,935
Other expense, net	3,508			271			1,684
Park EBITDA	$	642,176		$	610,487		$	596,392

All of our owned or managed parks are located in the United States with the exception of two parks in Mexico and one park in Montreal, Canada. We also have revenue and expenses related to the development of Six Flags-branded parks outside of North America. The following information reflects our long-lived assets (which consists of property and equipment and intangible assets), revenues and income by domestic and foreign categories as of or for the years ended December 31, 2018, 2017 and 2016:

(Amounts in thousands)	Domestic		Foreign		Total
As of or for the year ended December 31, 2018
Long-lived assets	$	2,160,970	$	101,359	$	2,262,329
Revenues	1,335,787		127,920		1,463,707
Income before income taxes	383,875		27,983		411,858
As of or for the year ended December 31, 2017
Long-lived assets	$	2,121,157	$	98,635	$	2,219,792
Revenues	1,240,018		119,056		1,359,074
Income before income taxes	301,322		27,730		329,052
As of or for the year ended December 31, 2016
Long-lived assets	$	2,111,839	$	83,636	$	2,195,475
Revenues	1,205,235		114,163		1,319,398
Income before income taxes	216,205		17,061		233,266

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Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information (Unaudited)

Quarterly Financial Information (Unaudited)

Following is a summary of the unaudited interim results of operations for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31, 2018
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	128,964		$	445,420	$	619,820	$	269,503
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(62,345		)	74,502		184,417		79,422
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.74	)	$	0.89	$	2.19	$	0.94
Diluted	(0.74		)	0.88		2.16		0.93

	Year Ended December 31, 2017
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	99,528		$	422,372	$	580,418	$	256,756
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(57,548		)	52,026		181,325		98,013
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.63	)	$	0.60	$	2.15	$	1.16
Diluted	(0.63		)	0.59		2.11		1.14

	Year Ended December 31, 2016
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	115,419		$	407,066	$	557,599	$	239,314
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(46,935		)	60,887		102,482		1,868
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.51	)	$	0.65	$	1.11	$	0.02
Diluted	(0.51		)	0.64		1.09		0.02

We operate a seasonal business. In particular, our theme park and waterpark operations contribute most of their annual revenue during the period from Memorial Day to Labor Day each year.

During the second and third quarter of 2017, it was determined that achieving the Modified EBITDA performance target related to the 2017 Performance Award would be difficult due to adverse weather and natural disasters experienced during the summer months of 2017, but late achievement of the 2017 Performance Award target was probable by the end of 2018. As a result, we recorded a reversal to stock-based compensation expense related to this award in the second and third quarters of 2017 of $27.9 million and $45.0 million, respectively, to reflect partial achievement of the 2017 Performance Award. The 2017 Performance Award provided for late achievement of the Modified EBITDA performance target in 2018, which did not occur. As a result, we recorded a reversal to stock-based compensation expense of $81.7 million in the fourth quarter of 2018 related to the 2017 Performance Award. Refer to Note 9 for further discussion.

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The consolidated financial statements include our accounts and the accounts of our wholly owned subsidiaries. We also consolidate the partnerships that own Six Flags Over Texas ("SFOT") and Six Flags Over Georgia (including Six Flags White Water Atlanta) ("SFOG", and together with SFOT, the "Partnership Parks") as subsidiaries in our consolidated financial statements as we have determined that we have the power to direct the activities of those entities that most significantly impact the entities' economic performance and we have the obligation to absorb losses and receive benefits from the entities that can be potentially significant to these entities. The equity interests owned by non-affiliated parties in the Partnership Parks are reflected in the accompanying consolidated balance sheets as redeemable noncontrolling interests. The portion of earnings or loss attributable to non-affiliated parties in the Partnership Parks is reflected as net income attributable to noncontrolling interests in the accompanying consolidated statements of operations. See Note 6 for further discussion.

Intercompany transactions and balances have been eliminated in consolidation.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. We evaluate our estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which we believe to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods.

Fair Value Measurement

Fair Value Measurement

Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 820, Fair Value Measurement, defines fair value as the exchange prices that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The guidance also specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumptions. In accordance with FASB ASC Topic 820, Fair Value Measurement, these two types of inputs have created the following fair value hierarchy:

• Level 1: quoted prices in active markets for identical assets;

• Level 2: inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the instrument; and

• Level 3: inputs to the valuation methodology are unobservable for the asset or liability.

The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. We use a market approach for our recurring fair value measurements, and we endeavor to use the best information available. Accordingly, valuation techniques that maximize the use of observable impacts are favored. We present the estimated fair values and classifications of our financial instruments in accordance with FASB Accounting Standards Consideration ("ASC") Topic 820, Fair Value Measurement.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments:

• The carrying values of cash and cash equivalents, accounts receivable, notes receivable, accounts payable and accrued liabilities approximate fair value because of the short maturity of these instruments.

• The measurement of the fair value of long-term debt is based on market prices that generally are observable for similar liabilities at commonly quoted intervals and is considered a Level 2 fair value measurement. Refer to Note 7 for additional information.

Cash Equivalents

Cash Equivalents

Cash equivalents consists of short-term highly liquid investments with a remaining maturity as of the date of purchase of three months or less, which are readily convertible into cash. For purposes of the consolidated statements of cash flows, we consider all highly liquid debt instruments with remaining maturities as of their date of purchase of three months or less to be cash equivalents. Cash equivalents were not significant as of December 31, 2018 and 2017.

Inventories

Inventories

Inventories are stated at lower of weighted average cost or net realizable value and primarily consist of products purchased for resale, including merchandise, food and miscellaneous supplies. Products are removed from inventory at weighted average cost.

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets include $22.9 million and $21.1 million of spare parts inventory for existing rides and attractions as of December 31, 2018 and 2017, respectively. These items are expensed as the repair or maintenance of rides and attractions occur.

Advertising Costs

Advertising Costs

Production costs of commercials and programming are charged to operations in the year first aired. The costs of other advertising, promotion, and marketing programs are charged to operations when incurred with the exception of direct-response advertising which is charged to the period it will benefit.

Debt Issuance Costs

Debt Issuance Costs

We capitalize costs related to the issuance of debt. Debt issuance costs directly related to our Revolving Loan are presented within other assets as debt issuance costs in our consolidated balance sheets. Debt issuance costs directly related to our Amended and Restated Term Loam B and our senior unsecured notes are presented within noncurrent liabilities as a reduction of long-term debt in our consolidated balance sheets. The amortization of such costs is recognized as interest expense using the interest method over the term of the respective debt issue.

Property and Equipment

Property and Equipment

Property and equipment additions are recorded at cost and the carrying value is depreciated using the straight-line method over the estimated useful lives of the assets. Maintenance and repair costs that do not improve service potential or extend economic life are charged directly to expense as incurred, while betterments and renewals are generally capitalized as property and equipment. When an item is retired or otherwise disposed of, the cost and applicable accumulated depreciation are removed and the resulting gain or loss is recognized. See Note 4 for further detail of the components of our property and equipment.

The estimated useful lives of the assets are as follows:

Rides and attractions	5 - 25 years
Land improvements	10 - 15 years
Buildings and improvements	Approximately 30 years
Furniture and equipment	5 - 10 years

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and intangible assets with indefinite useful lives are tested for impairment annually, or more frequently if events or circumstances indicate that the assets might be impaired. We identify our reporting unit and determine the carrying value of the reporting unit by assigning the assets and liabilities, including the existing goodwill and intangible assets, to the reporting unit. We then determine the fair value of the reporting unit and compare it to the carrying amount of the reporting unit. All of our parks are operated in a similar manner and have comparable characteristics in that they produce and distribute similar services and products using similar processes, have similar types of customers, are subject to similar regulations and exhibit similar economic characteristics. As such, we are a single reporting unit. For each year, the fair value of the single reporting unit exceeded our carrying amount (provided that, we have one reporting unit at the same level for which our Holdings common stock is traded, we believe our market capitalization is the best indicator of our reporting unit's fair value). In September 2012, the FASB amended FASB ASC Topic 350, Intangibles - Goodwill and Other, which permits entities to perform a qualitative analysis on indefinite-lived intangible assets to determine if it is more likely than not that the fair value of the intangible asset was less than its carrying amount as a basis for determining whether it was necessary to perform a quantitative impairment test. We adopted this amendment in September 2012 and have performed a qualitative analysis on our indefinite-lived intangible assets during the fourth quarter of each year.

The fair value of indefinite-lived intangible assets is generally determined based on a discounted cash flow analysis. An impairment loss occurs to the extent that the carrying value exceeds the fair value. For goodwill, if the fair value of the reporting unit were to be less than the carrying amount, an impairment loss would be recognized to the extent that the carrying amount of the reporting unit exceeds its fair value.

Valuation of Long-Lived Assets

Valuation of Long-Lived Assets

We review long-lived assets, including finite-lived intangible assets subject to amortization, for impairment upon the occurrence of events or changes in circumstances that would indicate that the carrying value of the asset or group of assets may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset or group of assets to the future net cash flows expected to be generated by the asset or group of assets. If such assets are not considered to be fully recoverable, any impairment to be recognized is measured by the amount by which the carrying amount of the asset or group of assets exceeds its respective fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.

Revenue Recognition

Revenue Recognition

FASB ASC 606, Revenue from Contracts with Customers (together with the series of Accounting Standards Updates described in the first paragraph under "Recently Adopted Accounting Pronouncements" below, "Topic 606") is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects consideration to which the entity expects to be entitled in exchange for those goods or services.

We recognize revenue upon admission into our parks, provision of our services or when products are delivered to our guests. Revenues are presented in the accompanying consolidated statements of operations net of sales taxes collected from our guests and remitted or payable to government taxing authorities. In contrast to our season pass and other multi-use offerings (such as our all season dining pass program, which enables season pass holders and members to eat meals and snacks any day they visit the park for one upfront payment) that expire at the end of each operating season, the membership program continues on a month-to-month basis after the initial twelve-month membership term and can be canceled any time after the initial term pursuant to the terms of the membership program. Guests enrolled in the membership program can visit our parks an unlimited number of times anytime they are open as long as the guest remains enrolled in the membership program. For season passes, memberships in the initial twelve-month term and other multi-use admissions, we estimate a redemption rate based on historical experience and other factors and assumptions we believe to be customary and reasonable and recognize a pro-rata portion of the revenue as the guest attends our parks. We review the estimated redemption rate regularly and on an ongoing basis and revise it as necessary throughout the year. Amounts received for multi-use admissions in excess of redemptions are recognized in deferred revenue. For active memberships after the initial twelve-month term, we recognize revenue monthly as payments are received. As of December 31, 2018, deferred revenue was primarily comprised of (i) advance sales of season passes, all season dining passes and other admissions for the 2019 operating season, (ii) unredeemed portions of the membership program that will be recognized in 2019, and (iii) sponsorship, international agreements and other fee-based revenue that will be recognized in 2019.

We have entered into international agreements to assist third parties in the planning, design, development and operation of Six Flags-branded parks outside of North America. These agreements typically consist of a brand licensing agreement, project services agreement, and management services agreement. Under Topic 606, we treat these agreements as one contract because each was negotiated with a single commercial objective. We have identified three distinct promises within the agreement with each third party partner as brand licensing, project services, and management services. Each of these promises is its own performance obligation and distinct as the third party could benefit from each service on its own with other readily available resources and each service is separately identifiable from other services in the context of the contract. We recognize revenue under our international agreements over the relevant service period of each performance obligation based on its relative stand-alone selling price, as determined by our best estimate of selling price. We review the service period of each performance obligation on an ongoing basis and revise it as necessary throughout the year. Revisions to the relevant service periods of the performance obligations may result in revisions to revenue in future periods and are recognized in the period in which the change is identified.

On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under FASB ASC 605, Revenue Recognition ("Topic 605"). See Note 3 for additional information.

Accounts Receivable, Net

Accounts Receivable, Net

Accounts receivable are reported at net realizable value and consist primarily of amounts due from guests for the sale of group outings and multi-use admission products, including season passes and the membership program. We are not exposed to a significant concentration of credit risk, however, based on the age of the receivables, our historical experience and other factors and assumptions we believe to be customary and reasonable, we do record an allowance for doubtful accounts.

Derivative Instruments and Hedging Activities

Derivative Instruments and Hedging Activities

We account for derivatives and hedging activities in accordance with FASB ASC Topic 815, Derivatives and Hedging. This accounting guidance establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts, and for hedging activities. It requires an entity to recognize all derivatives as either assets or liabilities in the consolidated balance sheet and measure those instruments at fair value. If certain conditions are met, a derivative may be specifically designated as a hedge for accounting purposes. The accounting for changes in the fair value of a derivative (e.g., gains and losses) depends on the intended use of the derivative and the resulting designation.

We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and our strategy for undertaking various hedge transactions. This process includes linking all derivatives that are designated as cash flow hedges to forecasted transactions. We also assess, both at the hedge's inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items.

Change in the fair value of a derivative that is effective and that is designated and qualifies as a cash-flow hedge are recorded in other comprehensive income (loss) until operations are affected by the variability in cash flows of the designated hedged item, at which point they are reclassified to interest expense. Change in fair value of a derivative that is not designated as a hedge are recorded in other income (expense), net in the consolidated statements of operations on a current basis. As of December 31, 2017, the interest rate swap agreements expired and all related amounts previously held as derivative assets and liabilities on the consolidated balance sheets and previously recorded in accumulated other comprehensive income were realized in earnings.

Commitments and Contingencies

Commitments and Contingencies

We are involved in various lawsuits and claims that arise in the normal course of business. Amounts associated with lawsuits or claims are reserved for matters in which it is believed that losses are probable and can be reasonably estimated. In addition to matters in which it is believed that losses are probable, disclosure is also provided for matters in which the likelihood of an unfavorable outcome is at least reasonably possible but for which a reasonable estimate of loss or range of loss is not possible. Legal fees are expensed as incurred. See Note 14 for further discussion.

Income Taxes

Income Taxes

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, including net operating loss and other tax carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date. We have a valuation allowance of $115.2 million and $113.5 million as of December 31, 2018 and 2017, respectively, due to uncertainties related to our ability to utilize some of our deferred tax assets, primarily consisting of certain state net operating loss and other tax carryforwards, before they expire. The valuation allowance was based on our estimates of taxable income by jurisdiction in which we operate and the period over which our deferred tax assets were recoverable. For the foreseeable future, we project taxable income that will allow for the utilization of all of our federal net operating loss carryforwards before they expire.

Our liability for income taxes is finalized as auditable tax years pass their respective statutes of limitations in the various jurisdictions in which we are subject to tax. However, these jurisdictions may audit prior years for which the statute of limitations is closed for the purpose of making an adjustment to our taxable income in a year for which the statute of limitations has not closed. Accordingly, taxing authorities of these jurisdictions may audit prior years of the group and its predecessors for the purpose of adjusting net operating loss carryforwards to years for which the statute of limitations has not closed.

We classify interest and penalties attributable to income taxes as part of income tax expense. As of December 31, 2018 and 2017, we had no accrued interest and penalties liability.

Because we do not permanently reinvest foreign earnings, United States deferred income taxes have been provided on unremitted foreign earnings to the extent that such foreign earnings are expected to be taxable upon repatriation.

On December 22, 2017, the Tax Act was signed into law. The Tax Act contained significant changes to corporate taxation, including reduction of the corporate tax rate from 35% to 21% effective January 1, 2018, limitation of the tax deduction for interest expense, limitation of the deduction for net operating losses and elimination of net operating loss carrybacks, one time taxation of offshore earnings at reduced rates, elimination of U.S. tax on foreign earnings (subject to certain important exceptions), new taxes concerning global intangible low-tax income (GILTI), immediate deductions for certain new investments instead of deductions for depreciation expense over time, and modifying or repealing many business deductions and credits including the limitation on deductions for certain executive compensation arrangements under Section 162(m) of the Internal Revenue Code. All corporation taxation aspects of the Tax Act are included in our year ended December 31, 2017 tax provision. See Note 10 for further discussion.

Earnings Per Common Share

Earnings Per Common Share

Basic earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per common share is computed by dividing net income attributable to Holdings' common stockholders by the weighted average number of common shares outstanding during the period including the effect of all dilutive common stock equivalents using the treasury stock method. In periods for which there is a net loss, diluted loss per common share is equal to basic loss per common share, since the effect of including any common stock equivalents would be antidilutive.

Stock-Based Compensation

Stock-Based Compensation

Pursuant to the Six Flags Entertainment Corporation Long-Term Incentive Plan (the "Long-Term Incentive Plan"), Holdings may grant stock options, stock appreciation rights, restricted stock, restricted stock units, unrestricted stock, deferred stock units, performance and cash-settled awards and dividend equivalents to select employees, officers, directors and consultants of Holdings and its affiliates. We recognize the fair value of each grant as compensation expense on a straight-line basis over the vesting period using the graded vesting terms of the respective grant. The fair value of stock option grants is estimated on the date of grant using the Black-Scholes option pricing valuation model. The fair value of stock, restricted stock units and restricted stock awards is the quoted market price of Holdings' stock on the date of grant. See Note 9 for further discussion of stock-based compensation and related disclosures.

Comprehensive Income

Comprehensive Income

Comprehensive income consists of net income, changes in the foreign currency translation adjustment, changes in the fair value of derivatives that are designated as hedges and changes in the net actuarial gains (losses) and amortization of prior service costs on our defined benefit retirement plan.

Redeemable Noncontrolling Interest

Redeemable Noncontrolling Interest

We record the carrying amount of our redeemable noncontrolling interests at their fair value at the date of issuance. We recognize the changes in their redemption value immediately as they occur and adjust the carrying value of these redeemable noncontrolling interests to equal the redemption value at the end of each reporting period, if greater than the redeemable noncontrolling interest carrying value.

This method would view the end of the reporting period as if it were also the redemption date for the redeemable noncontrolling interests. We conduct an annual review to determine if the fair value of the redeemable units is less than the redemption amount. If the fair value of the redeemable units is less than the redemption amount, there would be a charge to earnings per share allocable to common stockholders. The redemption amount at the end of each reporting period did not exceed the fair value of the redeemable units.

Recently Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). The amendments in ASU 2014-09 provide for a single, principles-based model for revenue recognition that replaces the existing revenue recognition guidance. In August 2015, the FASB issued Accounting Standards Update 2015-14, Revenue from Contracts with Customers - Deferral of the Effective Date ("ASU 2015-14"), to defer the effective date of ASU 2014-09 for one year. The new guidance became effective for annual and interim periods beginning after December 15, 2017 and replaced most existing revenue recognition guidance under U.S. GAAP. In March and April 2016, the FASB issued Accounting Standards Update No. 2016-08 and No. 2016-10, Revenue from Contracts with Customers (Topic 606)and Principal versus Agent Considerations and Identifying Performance Obligations and Licensing, respectively (together, "ASU 2016-08/10"). The amendments in ASU 2016-08/10 state that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The effective date and transition requirements for the amendments in ASU 2016-08/10 are the same as the effective date and transition requirements in ASU 2015-14. ASU 2016 08/10 permits the use of either a retrospective or cumulative effect transition method, and early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. On January 1, 2018, we adopted Topic 606 using the modified retrospective transition method applied to those contracts with customers which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under FASB ASC 605, Revenue Recognition ("Topic 605"). Refer to Note 3 for additional information.

In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments ("ASU 2016-15"). The amendments in ASU 2016-15 address eight classification issues related to the statement of cash flows:

• debt repayment or debt extinguishment costs;

• settlement of zero-coupon bonds;

• contingent consideration payments made after a business combination;

• proceeds from insurance claims;

• proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies;

• distribution received from equity method investees;

• beneficial interests in securitization transactions; and

• separately identifiable cash flows and application of the predominance principle.

On January 1, 2018, we adopted ASU 2016-15 using a retrospective transition method to each period presented. The adoption of ASU 2016-15 did not result in a material impact to the presentation of our condensed consolidated statement of cash flows.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash ("ASU 2016-18"). The amendments in ASU 2016-18 require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The accounting effects of ASU 2016-18 did not result in a material impact to the presentation of our consolidated statement of cash flows.

In March 2017, the FASB issued Accounting Standards Update No. 2017-07, Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost ("ASU 2017-07"). The amendments in ASU 2017-07 require that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The amendments in ASU 2017-07 also require that an employer disaggregate the service cost component from the other components of net benefit cost. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The amendments in ASU 2017-07 should be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic post-retirement benefit cost in the consolidated statements of operations. On January 1, 2018, we adopted ASU 2017-07 using a retrospective transition method to each period presented. Accordingly, the service cost component of net periodic pension cost allocated to our park employees and corporate employees was included within "Operating expenses" and "Selling, general and administrative expenses," respectively, while the other cost components were included in "Other net periodic pension benefit" in the condensed consolidated statements of operations.

Certain prior year amounts in the consolidated statements of operations were reclassified to conform to current year presentation in connection with the adoption of ASU 2017-07. For the years ended December 31, 2017 and 2016, the Company reclassified $2.7 million and $0.7 million, respectively, from "Operating expenses" to "Other net periodic pension benefit." This amount represents the non-service cost component of net periodic pension costs allocable to our park level employees. For the years ended December 31, 2017 and 2016, the Company reclassified $0.6 million and $1.2 million, respectively, from "Selling, general and administrative expenses" to "Other net periodic pension benefit". This amount represents the non-service cost component of net periodic pension costs allocable to our corporate employees. A nominal amount of non-service cost components remains in "Other (income) expense, net" and is not reclassified to "Other net periodic pension benefit." These amounts directly relate to certain other parks that we no longer operate but continue to service pension benefits for former employees of those parks.

In February 2018, the FASB issued Accounting Standards Update No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02"). The amendments in ASU 2018-02 allow entities to reclassify from "Accumulated other comprehensive income" ("AOCI") to retained earnings "stranded" tax effects resulting from passage of the Tax Act. An entity that elects to reclassify these amounts must reclassify stranded tax effects related to the change in federal tax rate for all items accounted for in AOCI (e.g., employee benefits and cumulative translation adjustments). Entities may also elect to reclassify other stranded tax effects that relate to the Tax Act but do not directly relate to the change in the federal tax rate (e.g., state taxes). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance requiring the effect of a change in tax laws or rates to be included in income from operations is not affected. Upon adoption of ASU 2018-02, entities are required to disclose their policy for releasing the income tax effects from AOCI. ASU 2018-02 is effective for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The amendments in ASU 2018-02 may be applied retrospectively to each period in which the effect of the Tax Act is recognized or an entity may elect to apply the amendments in the period of adoption. On January 1, 2018, we elected to early adopt ASU 2018-02, and applied the amendments in the period of adoption. As a result, we reclassified $9.4 million of "stranded" tax effects of the Tax Act from "Accumulated other comprehensive loss" to "Accumulated deficit" as of January 1, 2018.

w. Recent Accounting Pronouncements Not Yet Adopted

In May 2016, FASB issued ASU No. 2016-02, Leases, ("Topic 842"), which requires a lessee to recognize assets and liabilities for leases with lease terms of more than 12 months. The recognition, measurement and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance (formerly capital) or operating lease. However, unlike current GAAP, which requires only capital leases to be recognized on the balance sheet, ASU 2016-02 will require all leases with an initial term greater than one year to be recognized on the balance sheet as a right-of-use asset and a lease liability. ASU 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is allowed. The standard provides for a transition method using a modified retrospective approach, which includes a number of optional practical expedients. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842) Targeted Improvements, which allows lessees to recognize and measure leases at the beginning of the period of adoption without modifying the comparative period financial statements.

The Company adopted ASU 2016-02 as of January 1, 2019 using the modified retrospective method as of the period of adoption. The Company has elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows the Company to carryforward the historical lease classification. The Company has made an accounting policy election to keep leases with an initial term of 12 months or less off the balance sheet. The Company will recognize those lease payments in the consolidated statements of operations on a straight-line basis over the lease term. Related to adoption of the new standard, the Company has implemented internal controls and a lease accounting technology system to enable the preparation of financial statements.

The Company currently expects the most significant impact will be the recognition of ROU assets and lease liabilities for operating leases with original terms of over one year where the Company is the lessee. The Company estimates adoption of the new lease standard will result in recognition of ROU assets and lease liabilities of between $200 million and $230 million, as of January 1, 2019. The Company does not expect a material impact on its consolidated statements of operations. The standard will not impact our debt covenant compliance under our current agreements.

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of estimated useful lives of property and equipment

The estimated useful lives of the assets are as follows:

Rides and attractions	5 - 25 years
Land improvements	10 - 15 years
Buildings and improvements	Approximately 30 years
Furniture and equipment	5 - 10 years

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Revenue (Tables)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Schedule of Impact of Adoption

In accordance with the new revenue standard disclosure requirements, the impact of adoption of Topic 606 on our condensed consolidated balance sheet as of December 31, 2018 was as follows:

(Amounts in thousands)	Balance at December 31, 2018
Balance Sheet	As Reported			Balances Without Adoption			Effect of Change Higher/(Lower)
Assets
Accounts receivable, net	$	116,043		$	121,209		$	(5,166	)
Liabilities
Deferred revenue	146,227			148,183			(1,956		)
Deferred income taxes	173,998			172,502			1,496
Stockholders' Deficit
Accumulated deficit	(1,611,334		)	(1,616,960		)	5,626
Total stockholders' deficit	(643,093		)	(648,719		)	5,626

The impact of adoption of Topic 606 on our consolidated statements of operations for the year ended December 31, 2018 was as follows:

(Amounts in thousands)	Year Ended December 31, 2018
Statement of Operations	As Reported		Balances Without Adoption		Effect of Change Higher/(Lower)
Revenues
Sponsorship, international agreements and accommodations	$	100,116	$	101,058	$	(942	)
Costs and expenses
Income tax expense	95,855		96,053		(198		)
Net income	275,996		276,740		(744		)

Revenues Disaggregated by Contract Duration

The following tables present our revenues disaggregated by contract duration for the years ended December 31, 2018, 2017 and 2016, respectively. Long-term and short-term contracts consist of our contracts with customers with terms greater than one year and less than or equal to one year, respectively. Sales and usage-based taxes are excluded from revenues.

(Amounts in thousands)	Year Ended December 31, 2018
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	115,612	$	25,383	$	71,589	$	212,584
Short-term contracts and other (a)	694,452		528,144		28,527		1,251,123
Total revenues	$	810,064	$	553,527	$	100,116	$	1,463,707

(Amounts in thousands)	Year Ended December 31, 2017
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	109,943	$	20,498	$	57,934	$	188,375
Short-term contracts and other (a)	631,332		504,084		35,283		1,170,699
Total revenues	$	741,275	$	524,582	$	93,217	$	1,359,074

(Amounts in thousands)	Year Ended December 31, 2016
	Park Admissions		Park Food, Merchandise and Other		Sponsorship, international agreements and accommodations		Consolidated
Long-term contracts	$	88,594	$	12,610	$	53,670	$	154,874
Short-term contracts and other (a)	626,819		508,557		29,148		1,164,524
Total revenues	$	715,413	$	521,167	$	82,818	$	1,319,398

(a) Other revenues primarily include sales of single-use tickets and short-term transactional sales for which we have the right to invoice.

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Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Summary of property and equipment

As of December 31, 2018 and 2017, property and equipment was classified as follows:

	December 31,
(Amounts in thousands)	2018			2017
Land	$	221,616		$	221,345
Land improvements	251,295			236,135
Buildings and improvements	302,957			295,124
Rides and attractions	1,118,141			1,059,720
Equipment and other	310,669			283,563
Property and equipment, at cost	2,204,678			2,095,887
Accumulated depreciation	(950,996		)	(857,930		)
Property and equipment, net	$	1,253,682		$	1,237,957

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Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

As of December 31, 2018 and 2017, intangible assets, net consisted of the following:

	As of December 31, 2018
(Amounts in thousands, except years)	Weighted-Average Remaining Amortization Period (Years)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Indefinite-lived intangible assets:
Trade names, trademarks and other		$	344,075	$	—		$	344,075
Finite-lived intangible assets:
Third party licensing rights	1.5	24,361		(20,821		)	3,540
Other	42.9	1,726		(312		)	1,414
Total intangible assets, net		$	370,162	$	(21,133	)	$	349,029

	As of December 31, 2017
(Amounts in thousands, except years)	Weighted-Average Remaining Amortization Period (Years)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Indefinite-lived intangible assets:
Trade names, trademarks and other		$	344,075	$	—		$	344,075
Finite-lived intangible assets:
Third party licensing rights	2.5	24,361		(18,419		)	5,942
Other	30.0	2,735		(1,165		)	1,570
Total intangible assets, net		$	371,171	$	(19,584	)	$	351,587

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

We expect that amortization expense on our existing intangible assets subject to amortization for the succeeding five years and thereafter will approximate the following:

(Amounts in thousands)
For the year ending December 31:
2019	$	2,437
2020	1,048
2021	57
2022	57
2023	57
2024 and thereafter	1,298
	$	4,954

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Noncontrolling Interests, Partnership and Joint Ventures (Tables)

12 Months Ended

Dec. 31, 2018

Noncontrolling Interest [Abstract]

Schedule of changes in redeemable noncontrolling interests

The following table presents a rollforward of redeemable noncontrolling interests in the Partnership Parks:

(Amounts in thousands)	SFOT			SFOG			Total
Balance at December 31, 2016	$	227,620		$	258,256		$	485,876
Fresh start accounting fair market value adjustment for purchased units	(32		)	—			(32		)
Purchases of redeemable units of SFOT	(128		)	—			(128		)
Change in redemption value of partnership units	133			8,582			8,715
Net income attributable to noncontrolling interests	19,701			19,509			39,210
Distributions to noncontrolling interests	(19,701		)	(19,509		)	(39,210		)
Balance at December 31, 2017	227,593			266,838			494,431
Fresh start accounting fair market value adjustment for purchased units	(80		)	—			(80		)
Purchases of redeemable units of SFOT	(353		)	—			(353		)
Change in redemption value of partnership units	16,596			14,677			31,273
Net income attributable to noncontrolling interests	20,086			19,921			40,007
Distributions to noncontrolling interests	(20,086		)	(19,921		)	(40,007		)
Balance at December 31, 2018	$	243,756		$	281,515		$	525,271

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Long-Term Indebtedness (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of long-term debt

As of December 31, 2018 and 2017, total debt consisted of the following:

	December 31,
(Amounts in thousands)	2018			2017
Amended and Restated Term Loan B	$	583,750		$	544,750
2027 Notes	500,000			500,000
2024 Notes	1,000,000			1,000,000
Amended and Restated Revolving Loan	43,000			—
Net discount	(6,792		)	(8,137		)
Deferred financing costs	(13,446		)	(15,435		)
Total debt	2,106,512			2,021,178
Less current portion	43,000			—
Total long-term debt	$	2,063,512		$	2,021,178

Schedule of annual maturities of long-term debt

As of December 31, 2018, annual maturities of long-term debt, assuming no acceleration of maturities, were as follows:

(Amounts in thousands)
For the year ending December 31:
2019	$	—
2020	43,000
2021	—
2022	583,750
2023	—
2024 and thereafter	1,500,000
	$	2,126,750

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Selling, General and Administrative Expenses (Tables)

12 Months Ended

Dec. 31, 2018

Selling, General and Administrative Expenses

Summary of selling, general and administrative expenses

Selling, general and administrative expenses comprised the following for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands)	2018		2017		2016
Park	$	129,335	$	129,090	$	124,019
Corporate	2,833		29,980		168,986
Total selling, general and administrative expenses	$	132,168	$	159,070	$	293,005

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Stock Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following weighted-average assumptions were utilized in the Black-Scholes model to value the stock options granted during the years ended December 31, 2018, 2017 and 2016:

	December 31, 2018				December 31, 2017				December 31, 2016
	CEO		Employees		CEO		Employees		CEO		Employees
Risk-free interest rate	2.52	%	2.67	%	1.64	%	1.56	%	1.05	%	1.00	%
Expected life (in years)	3.85		3.68		3.85		3.85		3.85		3.85
Expected volatility	23.20	%	22.51	%	21.89	%	22.70	%	24.30	%	23.17	%
Expected dividend yield	4.67	%	4.54	%	4.22	%	4.42	%	4.47	%	4.15	%

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option activity for the year ended December 31, 2018:

(Amounts in thousands, expect per share data)	Shares		Weighted Avg. Exercise Price ($)		Weighted Avg. Remaining Contractual Term	Aggregate Intrinsic Value ($)
Balance at December 31, 2017	5,185		$	43.78
Granted	1,451		$	65.71
Exercised	(1,094	)	$	38.08
Canceled or exchanged	(4	)	$	44.39
Forfeited	(158	)	$	52.46
Expired	—		$	—
Balance at December 31, 2018	5,380		$	50.60	7.47	$	43,141
Vested and expected to vest at December 31, 2018	5,140		$	50.16	7.40	$	42,780
Options exercisable at December 31, 2018	2,035		$	37.88	5.51	$	36,413

Schedule of Share-based Payment Award, Stock Options, Weighted-Average Information

The following table presents the weighted average grant date fair value per share of the options granted, the total intrinsic value of options exercised, the total fair value of options that have vested, and the total cash received from the exercise of stock options during the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands, expect per share data)	2018		2017		2016
Weighted average grant date fair value of options granted	$	8.01	$	6.26	$	5.84
Total intrinsic value of options exercised	$	31,822	$	52,955	$	37,847
Total fair value of options that have vested	$	8,446	$	8,436	$	10,701
Total cash received from the exercise of stock options	$	41,658	$	60,583	$	34,680

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

.

Schedule of Nonvested Share Activity

The following table summarizes stock, restricted stock and restricted stock unit activity for the year ended December 31, 2018:

(Amounts in thousands, except per share amounts)	Shares		Weighted Average Grant Date Fair Value Per Share ($)
Non-vested balance at December 31, 2017	12		$	61.74
Granted	65		$	63.80
Vested	(61	)	$	63.42
Forfeited	—		$	—
Canceled	—		$	—
Non-vested balance at December 31, 2018	16		$	63.69

Schedule of Share-based Payment Award, Other than Stock Options, Weighted-Average Information

The following table presents the weighted average grant date fair value per share of stock awards granted, the total grant date fair value of stock awards granted, and the total fair value of stock awards that have vested during the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands, expect per share data)	2018		2017		2016
Weighted average grant date fair value of stock awards granted	$	63.80	$	61.74	$	51.46
Total grant date fair value of stock awards granted	$	4,185	$	750	$	68,207
Total fair value of stock awards that have vested	$	3,888	$	560	$	68,341

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

Stock-based compensation consisted of the following amounts for the years ended December 31, 2018, 2017 and 2016. We present separately the reversal of previously recorded stock-based compensation related to the 2017 Performance Award from our Long-Term Incentive Plan and Employee Stock Purchase Plan.

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Long-Term Incentive Plan
Options and Other	$	15,543		$	16,910		$	13,581
2017 Performance Award	(62,512		)	(39,935		)	102,447
Employee Stock Purchase Plan	285			328			311
Total stock-based compensation	$	(46,684	)	$	(22,697	)	$	116,339

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

The following table summarizes the domestic and foreign components of our income before income taxes for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(Amounts in thousands)	2018		2017		2016
Domestic	$	383,875	$	301,322	$	216,205
Foreign	27,983		27,730		17,061
Income before income taxes	$	411,858	$	329,052	$	233,266

Schedule of Components of Income Tax Expense (Benefit)

The following table summarizes the components of income tax expense (benefit) for the years ended December 31, 2018, 2017 and 2016:

(Amounts in thousands)	Current			Deferred			Total
2018:
U.S. federal	$	(58	)	$	65,976		$	65,918
Foreign	11,752			626			12,378
State and local	11,268			6,291			17,559
Income tax expense	$	22,962		$	72,893		$	95,855
2017:
U.S. federal	$	(72	)	$	(6,774	)	$	(6,846	)
Foreign	11,840			(2,231		)	9,609
State and local	5,829			7,434			13,263
Income tax expense (benefit)	$	17,597		$	(1,571	)	$	16,026
2016:
U.S. federal	$	(41	)	$	57,950		$	57,909
Foreign	6,206			(427		)	5,779
State and local	7,088			5,763			12,851
Income tax expense	$	13,253		$	63,286		$	76,539

Schedule of Effective Income Tax Rate Reconciliation

Recorded income tax expense differed from amounts computed by applying the U.S. federal income tax rate of 21% for the year ended December 31, 2018 and 35% for the years ended December, 31, 2017 and 2016 to income before income taxes as a result of the following:

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Computed "expected" federal income tax expense	$	86,490		$	115,168		$	81,643
Effect of noncontrolling interest income distribution	(8,401		)	(13,724		)	(13,449		)
Change in valuation allowance	1,663			413			648
Effect of state and local income taxes, net of federal tax benefit	12,980			10,767			8,353
Deductible compensation in excess of book	(5,392		)	(13,757		)	—
Nondeductible compensation	1,167			2,201			2,127
Effect of foreign income taxes	4,544			2,367			380
Effect of foreign earnings earned and remitted in the same year	2,317			4,402			6,000
Effect of foreign tax credits	(996		)	(5,357		)	(9,405		)
Effect of Tax Reform, including change in valuation allowance of $20,824	—			(84,599		)	—
Other, net	1,483			(1,855		)	242
Income tax expense	$	95,855		$	16,026		$	76,539

Schedule of Deferred Tax Assets and Liabilities

The following table summarizes the components of deferred income tax assets and deferred tax liabilities as of December 31, 2018 and 2017:

	December 31,
(Amounts in thousands)	2018		2017
Deferred tax assets	$	233,980	$	296,132
Less: Valuation allowance	115,172		113,509
Net deferred tax assets	118,808		182,623
Deferred tax liabilities	292,806		289,474
Net deferred tax liability	$	173,998	$	106,851

	December 31,
(Amounts in thousands)	2018		2017
Deferred tax assets:
Federal net operating loss carryforwards	$	19,334	$	49,543
State net operating loss carryforwards	117,236		119,837
Deferred compensation	6,873		21,464
Foreign tax credits	39,300		52,152
Alternative minimum tax credits	6,591		6,591
Accrued insurance, pension liability and other	44,646		46,545
Total deferred tax assets	$	233,980	$	296,132
Deferred tax liabilities:
Property and equipment	$	209,070	$	200,008
Intangible assets and other	83,736		89,466
Total deferred tax liabilities	$	292,806	$	289,474

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Preferred Stock, Common Stock and Other Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Schedule of quarterly cash dividends per share of common stock declared and paid

During the years ended December 31, 2018, 2017 and 2016, Holdings' Board of Directors declared and paid quarterly cash dividends per share of common stock as follows:

	Dividends Paid Per Share
2018:
Fourth Quarter	$	0.82
Third Quarter	$	0.78
Second Quarter	$	0.78
First Quarter	$	0.78
2017:
Fourth Quarter	$	0.70
Third Quarter	$	0.64
Second Quarter	$	0.64
First Quarter	$	0.64
2016:
Fourth Quarter	$	0.64
Third Quarter	$	0.58
Second Quarter	$	0.58
First Quarter	$	0.58

Schedule of balances for each component of accumulated other comprehensive (loss) income

The balances for each component of accumulated other comprehensive (loss) income are as follows:

	Currency Translation Adjustment			Cash Flow Hedges			Defined Benefit Plans			Income Taxes			Accumulated Other Comprehensive Income (Loss)
Balance as of December 31, 2015	$	(24,800	)	$	(1,598	)	$	(49,772	)	$	9,612		$	(66,558	)
Net current period change	(7,142		)	(944		)	4,881			965			(2,240		)
Amounts reclassified from AOCI	—			1,716			931			(1,033		)	1,614
Balance as of December 31, 2016	$	(31,942	)	$	(826	)	$	(43,960	)	$	9,544		$	(67,184	)
Net current period change	3,120			57			1,136			(2,106		)	2,207
Amounts reclassified from AOCI	—			769			865			(538		)	1,096
Balance as of December 31, 2017	$	(28,822	)	$	—		$	(41,959	)	$	6,900		$	(63,881	)
Net current period change	1,470			—			167			(351		)	1,286
Amounts reclassified from AOCI	—			—			721			(185		)	536
Effects of adoption of ASU 2018-02	—			—			—			(9,439		)	(9,439		)
Balance as of December 31, 2018	$	(27,352	)	$	—		$	(41,071	)	$	(3,075	)	$	(71,498	)

Schedule of Reclassifications out of Accumulated Other Comprehensive Income

The Company had the following reclassifications out of accumulated other comprehensive income (loss) during the years ended December 31, 2018, 2017 and 2016:

	Location of	Amount of Reclassification from AOCI
	Reclassification	Year Ended December 31,
Component of AOCI	into Income	2018			2017			2016
		(Amounts in thousands)
Amortization of loss on interest rate hedge	Interest expense	$	—		$	769		$	1,716
	Income tax benefit	—			(279		)	(669		)
	Net of tax	$	—		$	490		$	1,047
Amortization of deferred actuarial loss and prior service cost	Operating expenses	$	721		$	865		$	931
	Income tax benefit	(185		)	(259		)	(364		)
	Net of tax	$	536		$	606		$	567
Total reclassifications		$	536		$	1,096		$	1,614

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Pension Benefits (Tables)

12 Months Ended

Dec. 31, 2018

Retirement Benefits [Abstract]

Schedule of changes in benefit plan obligation and fair value of plan assets

The following table sets forth the change in our benefit plan obligation and fair value of plan assets:

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Change in benefit obligation:
Beginning balance	$	218,746		$	216,571		$	223,389
Interest cost	7,386			8,283			8,901
Actuarial loss (gain)	(16,324		)	11,402			(828		)
Benefits paid	(8,056		)	(17,510		)	(14,891		)
Benefit obligation at end of period	$	201,752		$	218,746		$	216,571
Change in fair value of plan assets:
Beginning balance	$	190,534		$	178,375		$	173,123
Actual return on assets	(2,497		)	25,240			15,949
Employer contributions	6,000			6,000			6,000
Administrative fees	(1,223		)	(1,571		)	(1,806		)
Benefits paid	(8,056		)	(17,510		)	(14,891		)
Fair value of plan assets at end of period	$	184,758		$	190,534		$	178,375

Schedule of weighted average assumptions used to determine net costs

The weighted average assumptions used to determine net costs are as follows:

	Year Ended December 31,
	2018		2017		2016
Discount rate	3.45	%	3.90	%	4.10	%
Rate of compensation increase	N/A		N/A		N/A
Expected return on plan assets	7.25	%	7.25	%	7.25	%
Corridor	10.00	%	10.00	%	10.00	%
Average future life expectancy (in years)	27.77		26.33		27.79

The weighted average assumptions used to determine benefit obligations are as follows:

	December 31,
	2018		2017
Discount rate	4.05	%	3.45	%
Rate of compensation increase	N/A		N/A

Schedule of components of net periodic benefit cost and amounts recognized in other comprehensive income (loss)

The following table sets forth the components of net periodic benefit cost and other comprehensive income (loss):

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Net periodic benefit cost:
Service cost	$	1,300		$	1,700		$	2,400
Interest cost	7,386			8,283			8,901
Expected return on plan assets	(13,737		)	(12,831		)	(12,490		)
Amortization of net actuarial loss	721			865			931
Total net periodic benefit	$	(4,330	)	$	(1,983	)	$	(258	)
Other comprehensive income:
Current year actuarial gain	$	167		$	1,136		$	4,881
Recognized net actuarial loss	721			865			931
Total other comprehensive gain	$	888		$	2,001		$	5,812

Schedule of fair value of plan assets

The following table presents the categories of our plan assets and the related levels of inputs in the fair value hierarchy used to determine the fair value, as defined in Note 2(c):

	Fair Value Measurements as of December 31, 2018
(Amounts in thousands)	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
ASSET CATEGORY:
Equity Securities:
Large-Cap Disciplined Equity (a)	$	22,022	$	22,022	$	—	$	—
International Equity (b)	15,894		15,894		—		—
Fixed Income:
Long Duration Fixed Income (c)	109,408		109,408		—		—
High Yield (d)	4,965		4,965		—		—
Emerging Markets Debt (e)	4,566		4,566		—		—
Alternatives:
Other Investments (f) (g)	27,903		—		—		—
Fair Value of Plan Assets	$	184,758	$	156,855	$	—	$	—

	Fair Value Measurements as of December 31, 2017
(Amounts in thousands)	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
ASSET CATEGORY:
Equity Securities:
Large-Cap Disciplined Equity (a)	$	27,765	$	27,765	$	—	$	—
Small/Mid-Cap Equity (a)	3,433		3,433		—		—
International Equity (b)	24,383		24,383		—		—
Fixed Income:
Long Duration Fixed Income (c)	95,650		95,650		—		—
High Yield (d)	8,559		8,559		—		—
Emerging Markets Debt (e)	5,001		5,001		—		—
Alternatives:
Other Investments (f) (g)	25,743		—		—		—
Fair Value of Plan Assets	$	190,534	$	164,791	$	—	$	—

________________________________________

(a) These categories are comprised of mutual funds actively traded on the registered exchanges or over the counter markets. The mutual funds are invested in equity securities of U.S. issuers.

(b) This category consists of mutual funds invested primarily in equity securities (common stocks, securities that are convertible into common stocks, preferred stocks, warrants and rights to subscribe to common stocks) of non-U.S. issuers purchased in foreign markets. The mutual funds are actively traded on U.S. or foreign registered exchanges, or the over-the-counter markets.

(c) The assets are comprised of U.S. Treasury Separate Trading of Registered Interest and Principal of Securities ("U.S. Treasury STRIPS") and mutual funds which are actively traded on the registered exchanges. The mutual funds are invested primarily in high quality government and corporate fixed income securities, as well as synthetic instruments or derivatives having economic characteristics similar to fixed income securities.

(d) The high yield portion of the fixed income portfolio consists of mutual funds invested primarily in fixed income securities that are rated below investment grade. The mutual funds are actively traded on the registered exchanges.

(e) The emerging debt portion of the portfolio consists of mutual funds primarily invested in the debt securities of government, government-related and corporate issuers in emerging market countries and of entities organized to restructure outstanding debt of such issuers. The mutual funds are actively traded on the registered exchanges.

(f) This category is comprised of investments in common collective trusts with the underlying assets invested in asset-backed securities, money market funds, corporate bonds and bank notes. The underlying assets are actively traded on the registered exchanges.

(g) Common/collective trust investments that are measured at fair value using the net asset value per share practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total fair value of plan assets. The Company has participant redemptions restricted to the last business day of the quarter, with either a 65 or 90 day period redemption notice.

Schedule of rollforward of the balances of plan assets that are valued using Level 3 inputs

The following table represents a rollforward of the December 31, 2017 balances of our plan assets that are valued using Level 3 inputs:

(Amounts in thousands)	Hedge Fund of Funds
Balance as of December 31, 2016	$	9,967
Actual return on plan assets:
Relating to assets still held at the reporting date	—
Relating to assets sold during the period	(9,967		)
Purchases, sales and settlements, net	—
Balance as of December 31, 2017	$	—

Summary of expected employer contributions and future benefit payments

The following table summarizes expected employer contributions and future benefit payments:

(Amounts in thousands)
Expected contributions to plan trusts
2019	$	6,000
Total expected contributions	$	6,000
Expected benefit payments:
2019	$	9,823
2020	10,242
2021	10,649
2022	11,196
2023	11,547
2024 through 2028	61,609
Total expected benefit payments	$	115,066

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Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Schedule of calculation of earnings per common share

Earnings per common share for the years ended December 31, 2018, 2017 and 2016 was calculated as follows:

	For the year ended December 31,
(Amounts in thousands, except per share amounts)	2018		2017		2016
Net income attributable to Six Flags Entertainment Corporation common stockholders	$	275,996	$	273,816	$	118,302
Weighted-average common shares outstanding—basic	84,100		86,802		92,349
Effect of dilutive stock options and restricted stock units	1,345		1,692		2,049
Weighted-average common shares outstanding—diluted	85,445		88,494		94,398
Earnings per share—basic	$	3.28	$	3.15	$	1.28
Earnings per share—diluted	$	3.23	$	3.09	$	1.25

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum obligations under non-cancellable operating leases

Future minimum obligations under non-cancelable operating leases, including site leases, as of December 31, 2018, are summarized as follows:

(Amounts in thousands)
For the year ending December 31:
2019	$	23,936
2020	23,266
2021	22,384
2022	21,626
2023	21,563
2024 and thereafter	314,799
	$	427,574

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Business Segments (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Financial Information, Net Income to Park EBITDA Reconciliation

The following table presents segment financial information and a reconciliation of net income to Park EBITDA. Park level expenses exclude all non-cash operating expenses, principally depreciation and amortization and all non-operating expenses.

	Year Ended December 31,
(Amounts in thousands)	2018			2017			2016
Net income	$	316,003		$	313,026		$	156,727
Interest expense, net	107,243			99,010			81,872
Income tax expense	95,855			16,026			76,539
Depreciation and amortization	115,693			111,671			106,893
Corporate expenses	48,679			52,105			51,435
Stock-based compensation	(46,684		)	(22,697		)	116,339
Non-operating park level expense, net:
Loss on disposal of assets	1,879			3,959			1,968
Loss on debt extinguishment, net	—			37,116			2,935
Other expense, net	3,508			271			1,684
Park EBITDA	$	642,176		$	610,487		$	596,392

Schedule of Segment Information, Long-Lived Assets, Revenues and Income Before Income Taxes

The following information reflects our long-lived assets (which consists of property and equipment and intangible assets), revenues and income by domestic and foreign categories as of or for the years ended December 31, 2018, 2017 and 2016:

(Amounts in thousands)	Domestic		Foreign		Total
As of or for the year ended December 31, 2018
Long-lived assets	$	2,160,970	$	101,359	$	2,262,329
Revenues	1,335,787		127,920		1,463,707
Income before income taxes	383,875		27,983		411,858
As of or for the year ended December 31, 2017
Long-lived assets	$	2,121,157	$	98,635	$	2,219,792
Revenues	1,240,018		119,056		1,359,074
Income before income taxes	301,322		27,730		329,052
As of or for the year ended December 31, 2016
Long-lived assets	$	2,111,839	$	83,636	$	2,195,475
Revenues	1,205,235		114,163		1,319,398
Income before income taxes	216,205		17,061		233,266

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Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information

Following is a summary of the unaudited interim results of operations for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31, 2018
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	128,964		$	445,420	$	619,820	$	269,503
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(62,345		)	74,502		184,417		79,422
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.74	)	$	0.89	$	2.19	$	0.94
Diluted	(0.74		)	0.88		2.16		0.93

	Year Ended December 31, 2017
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	99,528		$	422,372	$	580,418	$	256,756
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(57,548		)	52,026		181,325		98,013
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.63	)	$	0.60	$	2.15	$	1.16
Diluted	(0.63		)	0.59		2.11		1.14

	Year Ended December 31, 2016
(Amounts in thousands)	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	115,419		$	407,066	$	557,599	$	239,314
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	(46,935		)	60,887		102,482		1,868
Net (loss) income per weighted average common share outstanding:
Basic	$	(0.51	)	$	0.65	$	1.11	$	0.02
Diluted	(0.51		)	0.64		1.09		0.02

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Description of Business (Details)	12 Months Ended
	Dec. 31, 2018 park
Entity Location [Line Items]
Number of parks owned or operated	25
Period of operation of theme parks by the former SFEC under Six Flags name (in years)	40 years
Number of parks branded as "Six Flags" parks	21
United States
Entity Location [Line Items]
Number of parks owned or operated	22
Mexico
Entity Location [Line Items]
Number of parks owned or operated	2
Canada
Entity Location [Line Items]
Number of parks owned or operated	1

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Summary of Significant Accounting Policies (Details)			12 Months Ended
	Jun. 01, 2018 USD ($) park	Apr. 01, 1998 USD ($)	Dec. 31, 2018 USD ($) park payment	Dec. 31, 2017 USD ($) park	Dec. 31, 2016 USD ($)	Jan. 01, 2019 USD ($)	Jan. 01, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Maximum remaining maturity period of highly liquid investments as of purchase date to be considered cash equivalents			3 months
Valuation allowance for slow moving inventory			$ 0	$ 300,000
Spare parts inventory for existing rides and attractions included in prepaid expenses and other current assets			22,900,000	21,100,000
Prepaid advertising			1,600,000	1,900,000
Advertising and promotions expense			68,400,000	63,700,000	$ 62,800,000
Amortization of debt issuance costs			$ 3,979,000	4,061,000	4,503,000
Number of upfront payments | payment			1
Initial membership term			12 months
Allowance for doubtful accounts receivable			$ 7,400,000	4,200,000
Less: Valuation allowance			115,172,000	113,509,000
Liability of accrued interest and penalties attributable to income taxes			0	0
Excess tax benefits			(5,392,000)	(13,757,000)	0
Operating expenses			(574,724,000)	(511,873,000)	(490,116,000)
Selling, general and administrative expense			$ (132,168,000)	(159,070,000)	(293,005,000)
Cumulative effect adjustment							$ 4,882,000
Number of parks owned or operated | park			25
Payments to acquire businesses		$ 976,000,000
Goodwill			$ 659,618,000	$ 630,248,000
Premier Parks, LLC
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of leased parks acquired | park	5			5
Number of parks owned or operated | park	25
Payments to acquire businesses	$ 19,100,000			$ 19,100,000
Consideration transferred	23,000,000			23,000,000
Goodwill	$ 29,400,000			29,400,000
Accounting Standards Update 2017-07 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating expenses				2,700,000	700,000
Selling, general and administrative expense				$ 600,000	$ 1,200,000
Accounting Standards Update 2016-02 | Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset						$ 200,000,000
Operating lease, liability						$ 230,000,000
Retained earnings (accumulated deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment - adoption of 2016-09
Cumulative effect adjustment							(4,557,000)
Accumulated other comprehensive (loss) income
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment							9,439,000
Accumulated other comprehensive (loss) income | Accounting Standards Update, 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment							$ 9,439,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			20 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			25 years
Rides and attractions | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			5 years
Rides and attractions | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			25 years
Land improvements | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			10 years
Land improvements | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			15 years
Buildings and improvements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			30 years
Furniture and Equipment | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			5 years
Furniture and Equipment | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life			10 years

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Revenue - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended												12 Months Ended
	Jan. 01, 2018	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit		$ (1,611,334)				$ (1,529,608)								$ (1,611,334)	$ (1,529,608)
Income tax expense														95,855	16,026	$ 76,539
Revenues		269,503	$ 619,820	$ 445,420	$ 128,964	$ 256,756	$ 580,418	$ 422,372	$ 99,528	$ 239,314	$ 557,599	$ 407,066	$ 115,419	1,463,707	1,359,074	1,319,398
Long-term contracts
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues														212,584	$ 188,375	$ 154,874
Unearned contract with customer revenue	$ 111,600
Unearned contract with customer revenue recognized		109,700
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit	4,900	$ 5,626												5,626
Income tax expense	$ 1,300													(198)
Revenues														$ 900

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Revenue - Schedule of Change Due to Topic 606 Adoption (Details) - USD ($) $ in Thousands		3 Months Ended												12 Months Ended
	Jan. 01, 2018	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Accounts receivable, net		$ 116,043				$ 72,693								$ 116,043	$ 72,693
Liabilities
Deferred revenue		146,227				142,014								146,227	142,014
Deferred income taxes		173,998				106,851								173,998	106,851
Stockholders' Deficit
Accumulated deficit		(1,611,334)				(1,529,608)								(1,611,334)	(1,529,608)
Total stockholders' deficit		(643,093)				(505,112)								(643,093)	(505,112)
Revenues
Sponsorship, international agreements and accommodations														100,116
Costs and expenses
Income tax expense														95,855	16,026	$ 76,539
Net income attributable to Six Flags Entertainment Corporation		79,422	$ 184,417	$ 74,502	$ (62,345)	$ 98,013	$ 181,325	$ 52,026	$ (57,548)	$ 1,868	$ 102,482	$ 60,887	$ (46,935)	275,996	$ 273,816	$ 118,302
Calculated under Revenue Guidance in Effect before Topic 606
Assets
Accounts receivable, net		121,209												121,209
Liabilities
Deferred revenue		148,183												148,183
Deferred income taxes		172,502												172,502
Stockholders' Deficit
Accumulated deficit		(1,616,960)												(1,616,960)
Total stockholders' deficit		(648,719)												(648,719)
Revenues
Sponsorship, international agreements and accommodations														101,058
Costs and expenses
Income tax expense														96,053
Net income attributable to Six Flags Entertainment Corporation														276,740
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Assets
Accounts receivable, net		(5,166)												(5,166)
Liabilities
Deferred revenue		(1,956)												(1,956)
Deferred income taxes		1,496												1,496
Stockholders' Deficit
Accumulated deficit	$ 4,900	5,626												5,626
Total stockholders' deficit		$ 5,626												5,626
Revenues
Sponsorship, international agreements and accommodations														(942)
Costs and expenses
Income tax expense	$ 1,300													(198)
Net income attributable to Six Flags Entertainment Corporation														$ (744)

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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Revenues	$ 269,503	$ 619,820	$ 445,420	$ 128,964	$ 256,756	$ 580,418	$ 422,372	$ 99,528	$ 239,314	$ 557,599	$ 407,066	$ 115,419	$ 1,463,707	$ 1,359,074	$ 1,319,398
Long-term contracts
Disaggregation of Revenue [Line Items]
Revenues													212,584	188,375	154,874
Short-term contracts and other
Disaggregation of Revenue [Line Items]
Revenues													1,251,123	1,170,699	1,164,524
Park Admissions
Disaggregation of Revenue [Line Items]
Revenues													810,064	741,275	715,413
Park Admissions | Long-term contracts
Disaggregation of Revenue [Line Items]
Revenues													115,612	109,943	88,594
Park Admissions | Short-term contracts and other
Disaggregation of Revenue [Line Items]
Revenues													694,452	631,332	626,819
Park Food, Merchandise and Other
Disaggregation of Revenue [Line Items]
Revenues													553,527	524,582	521,167
Park Food, Merchandise and Other | Long-term contracts
Disaggregation of Revenue [Line Items]
Revenues													25,383	20,498	12,610
Park Food, Merchandise and Other | Short-term contracts and other
Disaggregation of Revenue [Line Items]
Revenues													528,144	504,084	508,557
Sponsorship, International Agreements and Accommodations
Disaggregation of Revenue [Line Items]
Revenues													100,116	93,217	82,818
Sponsorship, International Agreements and Accommodations | Long-term contracts
Disaggregation of Revenue [Line Items]
Revenues													71,589	57,934	53,670
Sponsorship, International Agreements and Accommodations | Short-term contracts and other
Disaggregation of Revenue [Line Items]
Revenues													$ 28,527	$ 35,283	$ 29,148

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Revenue - Performance Obligations (Details) - Long-term contracts $ in Millions	Dec. 31, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation	$ 167.4
Expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation	$ 64.7
Expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation	$ 48.6
Expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation	$ 30.7
Expected timing of satisfaction, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation	$ 100.8

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Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Summary of property and equipment [Line Items]
Property and equipment, at cost	$ 2,204,678	$ 2,095,887
Accumulated depreciation	(950,996)	(857,930)
Total property and equipment, net	1,253,682	1,237,957
Land
Summary of property and equipment [Line Items]
Property and equipment, at cost	221,616	221,345
Land improvements
Summary of property and equipment [Line Items]
Property and equipment, at cost	251,295	236,135
Buildings and improvements
Summary of property and equipment [Line Items]
Property and equipment, at cost	302,957	295,124
Rides and attractions
Summary of property and equipment [Line Items]
Property and equipment, at cost	1,118,141	1,059,720
Equipment and other
Summary of property and equipment [Line Items]
Property and equipment, at cost	$ 310,669	$ 283,563

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Goodwill and Intangible Assets - Additional Information (Details) $ in Thousands			12 Months Ended
	Jun. 01, 2018 USD ($) park	Apr. 01, 1998 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) park	Dec. 31, 2016 USD ($)
Goodwill [Line Items]
Goodwill			$ 659,618	$ 630,248
Payments to acquire businesses		$ 976,000
Amortization			$ 2,447	2,465	$ 2,603
Premier Parks, LLC
Goodwill [Line Items]
Goodwill	$ 29,400			29,400
Payments to acquire businesses	$ 19,100			$ 19,100
Number of leased parks acquired | park	5			5
Consideration transferred	$ 23,000			$ 23,000

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Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-lived intangible assets	$ 344,075	$ 344,075
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	(21,133)	(19,584)
Net Carrying Value	4,954
Intangible assets, gross	370,162	371,171
Intangible assets, net of accumulated amortization	$ 349,029	$ 351,587
Licensing Agreements
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period (Years)	1 year 6 months	2 years 6 months
Gross Carrying Value	$ 24,361	$ 24,361
Accumulated Amortization	(20,821)	(18,419)
Net Carrying Value	$ 3,540	$ 5,942
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period (Years)	42 years 10 months 24 days	30 years
Gross Carrying Value	$ 1,726	$ 2,735
Accumulated Amortization	(312)	(1,165)
Net Carrying Value	$ 1,414	$ 1,570

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Goodwill and Intangible Assets - Schedule of Amortization (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2019	$ 2,437
2020	1,048
2021	57
2022	57
2023	57
2024 and thereafter	1,298
Net Carrying Value	$ 4,954

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Noncontrolling Interests, Partnership and Joint Ventures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Changes in redeemable noncontrolling interests
Redeemable noncontrolling interests, beginning	$ 494,431	$ 485,876
Fresh start accounting fair market value adjustment for purchased units	(80)	(32)
Payments for repurchase of redeemable noncontrolling interest	(353)	(128)	$ (223)
Change in redemption value of partnership units	31,273	8,715
Net income attributable to noncontrolling interests	40,007	39,210
Distributions to noncontrolling interests	(40,007)	(39,210)
Redeemable noncontrolling interests, ending	525,271	494,431	485,876
Redeemable noncontrolling interest, equity, redemption value	525,300
Six Flags over Texas
Changes in redeemable noncontrolling interests
Redeemable noncontrolling interests, beginning	227,593	227,620
Fresh start accounting fair market value adjustment for purchased units	(80)	(32)
Payments for repurchase of redeemable noncontrolling interest	(353)	(128)
Change in redemption value of partnership units	16,596	133
Net income attributable to noncontrolling interests	20,086	19,701
Distributions to noncontrolling interests	(20,086)	(19,701)
Redeemable noncontrolling interests, ending	243,756	227,593	227,620
Redeemable noncontrolling interest, equity, redemption value	243,800
Six Flags over Georgia
Changes in redeemable noncontrolling interests
Redeemable noncontrolling interests, beginning	266,838	258,256
Fresh start accounting fair market value adjustment for purchased units	0	0
Payments for repurchase of redeemable noncontrolling interest	0	0
Change in redemption value of partnership units	14,677	8,582
Net income attributable to noncontrolling interests	19,921	19,509
Distributions to noncontrolling interests	(19,921)	(19,509)
Redeemable noncontrolling interests, ending	281,515	$ 266,838	$ 258,256
Redeemable noncontrolling interest, equity, redemption value	$ 281,500

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Long-Term Indebtedness - Additional Information (Details) - USD ($)													1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 18, 2018	Mar. 26, 2018	Oct. 15, 2017	Jun. 21, 2017	Apr. 13, 2017	Jan. 31, 2017	Dec. 20, 2016	Jun. 16, 2016	Dec. 23, 2013	Jul. 15, 2013	Dec. 21, 2012	Dec. 20, 2011	Apr. 30, 2014	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2015
Debt Instrument [Line Items]
Cash used to retire debt												$ 15,000,000
Loss on debt extinguishment															$ 0	$ 37,116,000	$ 2,935,000
Debt issuance costs															793,000	37,336,000	$ 6,278,000
Long-term debt, gross															2,126,750,000
Long-term debt, fair value															2,012,400,000	2,057,100,000
Interest Rate Swap
Debt Instrument [Line Items]
Derivative, notional amount													$ 200,000,000.0
Credit Facility Amendment 2013
Debt Instrument [Line Items]
Excess cash available for general corporate purposes									$ 200,000,000
Credit Facility Amendment 2016 June
Debt Instrument [Line Items]
Loss on debt extinguishment								$ 2,400,000
Credit Facility Amendment 2016 December
Debt Instrument [Line Items]
Loss on debt extinguishment							$ 500,000
Credit Facility 2011
Debt Instrument [Line Items]
Debt instrument, face amount												$ 1,135,000,000.0
Credit Facility 2011 - Revolving Loan
Debt Instrument [Line Items]
Debt instrument, term												5 years
Line of credit facility, maximum borrowing capacity												$ 200,000,000.0
Credit Facility 2011 - Term Loan A
Debt Instrument [Line Items]
Debt instrument, face amount												$ 75,000,000.0
Debt instrument, term												5 years
Repayment of debt											$ 72,200,000
Credit Facility 2011 - Term Loan B
Debt Instrument [Line Items]
Debt instrument, face amount												$ 860,000,000.0
Debt instrument, term												7 years
Line of credit facility, additional contingent borrowing capacity												$ 300,000,000.0
Repayment of debt											$ 277,800,000
Spread over variable rate (as a percent)												3.00%
Interest rate, variable rate basis floor												1.00%
Credit Facility 2011 - Term Loan B | Credit Facility Amendment 2012
Debt Instrument [Line Items]
Reduction in interest rate (as a percent)											0.25%
Credit Facility 2011 - Term Loans
Debt Instrument [Line Items]
Proceeds utilized for repayment of existing debt												$ 935,000,000
Old Debt - First Lien Amendment
Debt Instrument [Line Items]
Repayment of debt												950,000,000.0
Senior Unsecured 2021 Notes
Debt Instrument [Line Items]
Debt instrument, face amount											$ 800,000,000
Proceeds utilized for repayment of existing debt											350,000,000
Remaining proceeds utilized for share repurchases and other corporate matters											$ 450,000,000
Loss on debt extinguishment														$ 36,900,000
Debt instrument, interest rate, stated percentage											5.25%
Periodic payment of interest										$ 22,300,000	$ 21,000,000
Credit Facility 2011 - Term Loan B, As Amended 2013
Debt Instrument [Line Items]
Spread over variable rate (as a percent)									2.75%
Interest rate, variable rate basis floor									0.75%
Credit Facility 2011 - Term Loan B, As Amended 2013 | Credit Facility Amendment 2013
Debt Instrument [Line Items]
Reduction in interest rate (as a percent)									0.50%
Credit Facility 2011 - Term Loan B, As Amended 2013 | Credit Facility Amendment 2013 | Variable Rate Basis Spread
Debt Instrument [Line Items]
Reduction in interest rate (as a percent)									0.25%
Credit Facility 2011 - Term Loan B, As Amended 2013 | Credit Facility Amendment 2013 | LIBOR
Debt Instrument [Line Items]
Reduction in interest rate (as a percent)									0.25%
Amended and Restated Revolving Loan
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity																		$ 250,000,000
Long-term line of credit															43,000,000	0
Letters of credit outstanding, amount															$ 18,100,000	$ 18,700,000
Commitment fee (as a percent)															0.375%	0.375%
Amended and Restated Term Loan B
Debt Instrument [Line Items]
Debt instrument, face amount																		700,000,000
Line of credit facility, additional contingent borrowing capacity												$ 350,000,000						$ 350,000,000.0
Repayment of debt								$ 150,000,000
Debt instrument, periodic payment															$ 1,800,000
Amended and Restated Term Loan B, As Amended June 2016
Debt Instrument [Line Items]
Spread over variable rate (as a percent)								2.50%
Debt issuance costs								$ 1,000,000
Amended and Restated Term Loan B, As Amended June 2016 | Credit Facility Amendment 2016 June | Variable Rate Basis Spread
Debt Instrument [Line Items]
Reduction in interest rate (as a percent)								0.25%
Senior Unsecured 2024 Notes
Debt Instrument [Line Items]
Debt instrument, face amount								$ 300,000,000.0
Repayment of debt								150,000,000
Debt issuance costs								$ 4,700,000
Long-term debt, gross															1,000,000,000	$ 1,000,000,000
Debt instrument, interest rate, stated percentage								4.875%
Periodic payment of interest					$ 24,400,000	$ 9,100,000
Amended and Restated Term Loan B, As Amended December 2016
Debt Instrument [Line Items]
Spread over variable rate (as a percent)							2.25%
Debt instrument, interest rate, effective percentage																3.36%
Amended and Restated Term Loan B, As Amended December 2016 | Credit Facility Amendment 2016 December | Variable Rate Basis Spread
Debt Instrument [Line Items]
Reduction in interest rate (as a percent)							0.25%
Amended and Restated Term Loan B, As Amended June 2017
Debt Instrument [Line Items]
Spread over variable rate (as a percent)				2.00%
Interest rate, variable rate basis floor													0.75%
Loss on debt extinguishment				$ 200,000
Debt issuance costs				$ 500,000
Long-term debt, gross															$ 583,750,000	$ 544,750,000
Debt instrument, interest rate, effective percentage															4.26%
Amended and Restated Term Loan B, As Amended June 2017 | Credit Facility Amendment 2017 | Variable Rate Basis Spread
Debt Instrument [Line Items]
Reduction in interest rate (as a percent)				0.25%
Amended and Restated Term Loan B, As Amended March 2018
Debt Instrument [Line Items]
Spread over variable rate (as a percent)		1.75%
Debt issuance costs		$ 500,000
Amended and Restated Term Loan B, As Amended March 2018 | Variable Rate Basis Spread
Debt Instrument [Line Items]
Reduction in interest rate (as a percent)		0.25%
Amended and Restated Term Loan B, As Amended April 2018
Debt Instrument [Line Items]
Debt issuance costs	$ 300,000
Proceeds from Lines of Credit	$ 39,000,000
Senior Unsecured 2024 Notes Add-on
Debt Instrument [Line Items]
Debt instrument, face amount					700,000,000
Debt issuance costs					$ 3,900,000
Debt instrument, interest rate, stated percentage					4.875%
Senior Unsecured 2027 Notes
Debt Instrument [Line Items]
Debt instrument, face amount					$ 500,000,000.0
Debt issuance costs					$ 2,600,000
Long-term debt, gross															$ 500,000,000	$ 500,000,000
Debt instrument, interest rate, stated percentage					5.50%
Periodic payment of interest			$ 13,900,000		$ 13,800,000

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Long-Term Indebtedness - Schedule of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,126,750
Net discount	(6,792)	$ (8,137)
Deferred financing costs	(13,446)	(15,435)
Total debt	2,106,512	2,021,178
Less current portion	(43,000)	0
Long-term debt, net	2,063,512	2,021,178
Amended and Restated Term Loan B, As Amended June 2017
Debt Instrument [Line Items]
Long-term debt, gross	583,750	544,750
Senior Unsecured 2027 Notes
Debt Instrument [Line Items]
Long-term debt, gross	500,000	500,000
Senior Unsecured 2024 Notes
Debt Instrument [Line Items]
Long-term debt, gross	1,000,000	1,000,000
Amended and Restated Revolving Loan
Debt Instrument [Line Items]
Long-term line of credit	$ 43,000	$ 0

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Long-Term Indebtedness - Schedule of Maturities (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Debt Disclosure [Abstract]
2019	$ 0
2020	43,000
2021	0
2022	583,750
2023	0
2024 and thereafter	1,500,000
Long-term debt, gross	$ 2,126,750

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Selling, General and Administrative Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selling, General and Administrative Expenses [Line Items]
Selling, general and administrative expense	$ 132,168	$ 159,070	$ 293,005
Stock-based compensation	(46,684)	(22,697)	116,339
Operating Segments
Selling, General and Administrative Expenses [Line Items]
Selling, general and administrative expense	129,335	129,090	124,019
Corporate, Non-Segment
Selling, General and Administrative Expenses [Line Items]
Selling, general and administrative expense	$ 2,833	$ 29,980	$ 168,986

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Stock Benefit Plans - Additional Information (Details) - USD ($)	1 Months Ended				3 Months Ended			12 Months Ended
	May 31, 2017	Feb. 29, 2016	May 31, 2015	Feb. 28, 2015	Dec. 31, 2018	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2014	Dec. 31, 2011	Feb. 08, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation								$ (46,684,000)	$ (22,697,000)	$ 116,339,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent based on historical data								75.00%
Percent based on forward-looking data								25.00%
Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares authorized (in shares)	4,000,000		5,000,000
Shares available for future grant (in shares)					5,086,000			5,086,000
Long Term Incentive Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options to purchase common stock outstanding (in shares)					5,380,000			5,380,000	5,185,000
Award vesting period								4 years
Expiration period								10 years
Compensation cost not yet recognized					$ 13,500,000			$ 13,500,000
Period for recognition								3 years 1 month 13 days
Unvested stock options outstanding (in shares)													10,000,000
Threshold for accumulated accrued dividend distribution to receive cash dividends (in shares)								1,000
Threshold for accumulated accrued dividend distribution to receive stock dividends (in shares)								1,000
Granted (in shares)								1,451,000	1,900,000	1,300,000
Long Term Incentive Plan | 2015 Performance Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation										$ (1,600,000)
Modified EBITDA for additional performance award												$ 500,000,000
Shares issued in period (in shares)		1,314,000		1,511,100
Long Term Incentive Plan | 2017 Performance Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Modified EBITDA for additional performance award									$ 605,300,000		$ 600,000,000
Target increase									5,300,000
Cumulative adjustment to allocated share-based compensation expense					81,700,000	$ 45,000,000	$ 27,900,000
Unrecognized share-based compensation					0			$ 0
Long Term Incentive Plan | 2020 Performance Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized					$ 63,200,000			63,200,000
Modified EBITDA for additional performance award								$ 750,000,000
Potential grants based on performance criteria (in shares)								1,025,000
Long Term Incentive Plan | 2017 Performance Award, Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential grants based on performance criteria (in shares)											2,300,000
Cumulative adjustment to allocated share-based compensation expense									66,700,000
Long Term Incentive Plan | 2017 Performance Award, Dividend Equivalents
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative adjustment to allocated share-based compensation expense									$ 6,200,000
Long Term Incentive Plan | Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested, number (in shares)					16,000			16,000	12,000
Compensation cost not yet recognized					$ 300,000			$ 300,000
Period for recognition								3 months 29 days
Granted (in shares)								65,000
Weighted average grant date fair value of stock awards granted (in dollars per share)								$ 63.80	$ 61.74	$ 51.46
Total grant date fair value of stock awards granted								$ 4,185,000	$ 750,000	$ 68,207,000
Long Term Incentive Plan | Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized					$ 0			$ 0
Number of Shares to be Issued for each award (in shares)					1			1
Period after which shares are to be delivered								30 days
Granted (in shares)								3,000
Weighted average grant date fair value of stock awards granted (in dollars per share)								$ 57.04	$ 56.32	$ 54.16
Total grant date fair value of stock awards granted								$ 200,000	$ 200,000	$ 200,000
Long Term Incentive Plan | Dividend Equivalent Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation								5,900,000	4,200,000	5,100,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation								$ 285,000	$ 328,000	$ 311,000
Percentage of the market value of common stock at beginning or end of the offering period for shares eligible to be purchased					90.00%			90.00%
Number of shares of common stock that may be issued under the Plan (in shares)					2,000,000			2,000,000
Shares in ESOP (in shares)					1,702,000			1,702,000

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Stock Benefit Plans - Weighted-average Assumptions (Details) - Long Term Incentive Plan - Stock Options	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.52%	1.64%	1.05%
Expected life (in years)	3 years 10 months 6 days	3 years 10 months 6 days	3 years 10 months 6 days
Expected volatility	23.20%	21.89%	24.30%
Expected dividend yield	4.67%	4.22%	4.47%
Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.67%	1.56%	1.00%
Expected life (in years)	3 years 8 months 5 days	3 years 10 months 6 days	3 years 10 months 6 days
Expected volatility	22.51%	22.70%	23.17%
Expected dividend yield	4.54%	4.42%	4.15%

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Stock Benefit Plans - Stock Option Activity (Details) - Long Term Incentive Plan - Stock Options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding
Options outstanding at the beginning of the period (in shares)	5,185
Granted (in shares)	1,451	1,900	1,300
Exercised (in shares)	(1,094)
Canceled or exchanged (in shares)	(4)
Forfeited (in shares)	(158)
Expired (in shares)	0
Options outstanding at the end of the period (in shares)	5,380	5,185
Vested and expected to vest at the end of the period (in shares)	5,140
Options exercisable at end of the period (in shares)	2,035
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Outstanding, Weighted average exercise price at the beginning of the period (in dollars per share)	$ 43.78
Grants in period, Weighted average exercise price (in dollars per share)	65.71
Exercised, Weighted average exercise price (in dollars per share)	38.08
Canceled or exchanged, Weighted average exercise price (in dollars per share)	44.39
Forfeited, Weighted average exercise price (in dollars per share)	52.46
Expired, Weighted average exercise price (in dollars per share)	0.00
Outstanding, Weighted average exercise price at the end of the period (in dollars per share)	50.60	$ 43.78
Vested and expected to vest, Weighted average exercise price (in dollars per share)	50.16
Options exercisable at period end, Weighted average exercise price (in dollars per share)	$ 37.88
Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term
Balance at the end of the period, Weighted average remaining contractual term	7 years 5 months 19 days
Vested and expected to vest at the end of the period, Weighted average remaining contractual term	7 years 4 months 24 days
Options exercisable at the end of the period. Weighted average remaining contractual term	5 years 6 months 4 days
Share Based Compensation Arrangement by Share Based Payment Award, Options, Intrinsic Value
Balance at the end of the period, Aggregate Intrinsic Value	$ 43,141
Vested and expected to vest at the end of the period, Aggregate Intrinsic Value	42,780
Options exercisable at the end of the period, Aggregate Intrinsic Value	$ 36,413

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Stock Benefit Plans - Aspects of Awards Exercised (Details) - Long Term Incentive Plan - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value of options granted	$ 8.01	$ 6.26	$ 5.84
Total intrinsic value of options exercised	$ 31,822	$ 52,955	$ 37,847
Total fair value of options that have vested	8,446	8,436	10,701
Total cash received from the exercise of stock options	$ 41,658	$ 60,583	$ 34,680
Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Weighted Average Grant Date Fair Value (in dollars per share)	$ 63.80	$ 61.74	$ 51.46
Total grant date fair value of stock awards granted	$ 4,185	$ 750	$ 68,207
Total fair value of stock awards that have vested	$ 3,888	$ 560	$ 68,341

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Stock Benefit Plans - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ (46,684)	$ (22,697)	$ 116,339
2017 Performance Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	0	62,512
2017 Performance Award | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	0	54,877
2017 Performance Award | Dividend Equivalent Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	0	7,635
Long Term Incentive Plan | Employee Stock Options and Other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	15,543	16,910	13,581
Long Term Incentive Plan | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	(62,512)	(39,935)	102,447
Long Term Incentive Plan | Dividend Equivalent Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	5,900	4,200	5,100
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 285	$ 328	$ 311

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Stock Benefit Plans - Summary of Stock, Restricted Stock, and Restricted Stock Unit Activity (Details) - Long Term Incentive Plan - Restricted Stock and Restricted Stock Units - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Shares
Non-vested balance at the beginning of the period (in shares)	12
Granted (in shares)	65
Vested (in shares)	(61)
Forfeited (in shares)	0
Canceled (in shares)	0
Non-vested balance at the end of the period (in shares)	16	12
Weighted Average Grant Date Fair Value Per Share ($)
Non-vested balance at the beginning of the period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 63.69	$ 61.74
Granted, Weighted Average Grant Date Fair Value (in dollars per share)	63.80	$ 61.74	$ 51.46
Vested, Weighted Average Grant Date Fair Value (in dollars per share)	63.42
Forfeited, Weighted Average Grant Date Fair Value (in dollars per share)	0.00
Canceled (in dollars per share)	$ 0.00

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Income Taxes - Foreign and Domestic Components of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Domestic	$ 383,875	$ 301,322	$ 216,205
Foreign	27,983	27,730	17,061
Income before income taxes	$ 411,858	$ 329,052	$ 233,266

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Income Taxes - Components of Income Tax Expense (Benefit) from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current
U.S. federal	$ (58)	$ (72)	$ (41)
Foreign	11,752	11,840	6,206
State and local	11,268	5,829	7,088
Income tax expense	22,962	17,597	13,253
Deferred
U.S. federal	65,976	(6,774)	57,950
Foreign	626	(2,231)	(427)
State and local	6,291	7,434	5,763
Income tax expense	72,893	(1,571)	63,286
U.S. federal	65,918	(6,846)	57,909
Foreign	12,378	9,609	5,779
State and local	17,559	13,263	12,851
Income tax expense	$ 95,855	$ 16,026	$ 76,539

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Income Taxes - Reconciliation of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Computed expected federal income tax expense	$ 86,490	$ 115,168	$ 81,643
Effect of noncontrolling interest income distribution	(8,401)	(13,724)	(13,449)
Change in valuation allowance	1,663	413	648
Effect of state and local income taxes, net of federal tax benefit	12,980	10,767	8,353
Deductible compensation in excess of book	(5,392)	(13,757)	0
Nondeductible compensation	1,167	2,201	2,127
Effect of foreign income taxes	4,544	2,367	380
Effect of foreign earnings earned and remitted in the same year	2,317	4,402	6,000
Effect of foreign tax credits	(996)	(5,357)	(9,405)
Effect of Tax Reform, including change in valuation allowance of $20,824	0	(84,599)	0
Valuation Allowance		20,824
Other, net	1,483	(1,855)	242
Income tax expense	$ 95,855	$ 16,026	$ 76,539

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Income Taxes - Components of Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Deferred tax assets	$ 233,980	$ 296,132
Less: Valuation allowance	115,172	113,509
Net deferred tax assets	118,808	182,623
Net deferred tax liability	173,998	106,851
Deferred tax assets:
Federal net operating loss carryforwards	19,334	49,543
State net operating loss carryforwards	117,236	119,837
Deferred compensation	6,873	21,464
Foreign tax credits	39,300	52,152
Alternative minimum tax credits	6,591	6,591
Accrued insurance, pension liability and other	44,646	46,545
Total deferred tax assets	233,980	296,132
Deferred tax liabilities:
Property and equipment	209,070	200,008
Intangible assets and other	83,736	89,466
Deferred tax liabilities	$ 292,806	$ 289,474

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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	May 01, 2010	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
U.S. federal income tax rate (as a percent)		21.00%	35.00%	35.00%
Reduction in net operating loss as a result of emergence from chapter 11	$ 804,800
Estimated annual limitation		$ 32,500
Estimated built in gains		696,000
Foreign tax credits		39,300	$ 52,152
Less: Valuation allowance		115,172	113,509
Unrecognized tax benefit		25,700	$ 25,700
U.S. Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		200,000
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		$ 5,500,000
Minimum
Operating Loss Carryforwards [Line Items]
Property, plant and equipment, useful life		20 years
Property, plant and equipment, useful life, tax		7 years
Maximum
Operating Loss Carryforwards [Line Items]
Property, plant and equipment, useful life		25 years
Property, plant and equipment, useful life, tax		12 years

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Preferred Stock, Common Stock and Other Stockholders' Equity - Additional Information (Details) - USD ($)			12 Months Ended				33 Months Ended
	Feb. 14, 2019	Nov. 20, 2013	Dec. 31, 2018	Dec. 31, 2017	May 31, 2017	Dec. 31, 2016	Aug. 31, 2016	Mar. 30, 2017	Jun. 07, 2016
Preferred Stock, Common Stock and Other Stockholders' Equity (Deficit) [Line Items]
Common stock, shares authorized (in shares)			140,000,000	140,000,000
Common stock, shares outstanding (in shares)			83,962,182	84,488,433
Value of shares repurchased			$ 110,990,000	$ 499,442,000		$ 211,751,000
Number of authorized shares of preferred stock (in shares)			5,000,000
November 2013 Stock Repurchase Plan
Preferred Stock, Common Stock and Other Stockholders' Equity (Deficit) [Line Items]
Authorized repurchase amount		$ 500,000,000.0
Period over which shares are authorized to be repurchased (in years)		4 years
Aggregate shares repurchased (in shares)							11,428,000
Value of shares repurchased							$ 500,000,000
Average cost (in dollars per share)							$ 43.75
June 2016 Stock Repurchase Plan
Preferred Stock, Common Stock and Other Stockholders' Equity (Deficit) [Line Items]
Authorized repurchase amount									$ 500,000,000.0
Aggregate shares repurchased (in shares)					8,392,000
Value of shares repurchased					$ 500,000,000
Average cost (in dollars per share)					$ 59.58
March 2017 Stock Repurchase Plan
Preferred Stock, Common Stock and Other Stockholders' Equity (Deficit) [Line Items]
Authorized repurchase amount								$ 500,000,000.0
March 2017 Stock Repurchase Plan | Subsequent Event
Preferred Stock, Common Stock and Other Stockholders' Equity (Deficit) [Line Items]
Aggregate shares repurchased (in shares)	4,603,000
Value of shares repurchased	$ 268,200,000
Average cost (in dollars per share)	$ 58.27
Remaining authorized repurchase amount	$ 231,800,000
Long Term Incentive Plan
Preferred Stock, Common Stock and Other Stockholders' Equity (Deficit) [Line Items]
Shares available for future grant (in shares)			5,086,000
Employee Stock Purchase Plan
Preferred Stock, Common Stock and Other Stockholders' Equity (Deficit) [Line Items]
Shares in ESOP (in shares)			1,702,000

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Preferred Stock, Common Stock and Other Stockholders' Equity - Dividends (Details) - $ / shares	3 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016
Equity [Abstract]
Cash dividends per share of common stock paid (in dollars per share)	$ 0.82	$ 0.78	$ 0.78	$ 0.78	$ 0.70	$ 0.64	$ 0.64	$ 0.64	$ 0.64	$ 0.58	$ 0.58	$ 0.58

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Preferred Stock, Common Stock and Other Stockholders' Equity - Components of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Accumulated Other Comprehensive (Loss) Income
Balance at the beginning of the period	$ (505,112)
Net current period change	1,286	$ 2,207	$ (2,240)
Amounts reclassified from AOCI	536	1,096	1,614
Effects of adoption of ASU 2018-02				$ (4,882)
Balance at the end of the period	(643,093)	(505,112)
Currency Translation Adjustment
Accumulated Other Comprehensive (Loss) Income
Balance at the beginning of the period	(28,822)	(31,942)	(24,800)
Net current period change	1,470	3,120	(7,142)
Amounts reclassified from AOCI	0	0	0
Balance at the end of the period	(27,352)	(28,822)	(31,942)
Currency Translation Adjustment | Accounting Standards Update, 2018-02
Accumulated Other Comprehensive (Loss) Income
Effects of adoption of ASU 2018-02				0
Cash Flow Hedges
Accumulated Other Comprehensive (Loss) Income
Balance at the beginning of the period	0	(826)	(1,598)
Net current period change	0	57	(944)
Amounts reclassified from AOCI	0	769	1,716
Balance at the end of the period	0	0	(826)
Cash Flow Hedges | Accounting Standards Update, 2018-02
Accumulated Other Comprehensive (Loss) Income
Effects of adoption of ASU 2018-02				0
Defined Benefit Plans
Accumulated Other Comprehensive (Loss) Income
Balance at the beginning of the period	(41,959)	(43,960)	(49,772)
Net current period change	167	1,136	4,881
Amounts reclassified from AOCI	721	865	931
Balance at the end of the period	(41,071)	(41,959)	(43,960)
Defined Benefit Plans | Accounting Standards Update, 2018-02
Accumulated Other Comprehensive (Loss) Income
Effects of adoption of ASU 2018-02				0
Income Taxes
Accumulated Other Comprehensive (Loss) Income
Balance at the beginning of the period	6,900	9,544	9,612
Net current period change	(351)	(2,106)	965
Amounts reclassified from AOCI	(185)	(538)	(1,033)
Balance at the end of the period	(3,075)	6,900	9,544
Income Taxes | Accounting Standards Update, 2018-02
Accumulated Other Comprehensive (Loss) Income
Effects of adoption of ASU 2018-02				(9,439)
Accumulated other comprehensive (loss) income
Accumulated Other Comprehensive (Loss) Income
Balance at the beginning of the period	(63,881)	(67,184)	(66,558)
Effects of adoption of ASU 2018-02				(9,439)
Balance at the end of the period	$ (71,498)	$ (63,881)	$ (67,184)
Accumulated other comprehensive (loss) income | Accounting Standards Update, 2018-02
Accumulated Other Comprehensive (Loss) Income
Effects of adoption of ASU 2018-02				$ (9,439)

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Preferred Stock, Common Stock and Other Stockholders' Equity - Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (108,034)	$ (99,766)	$ (82,377)
Income tax expense	(95,855)	(16,026)	(76,539)
Net income	316,003	313,026	156,727
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	536	1,096	1,614
Reclassification out of Accumulated Other Comprehensive Income | Amortization of loss on interest rate hedge
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense		769	1,716
Income tax expense		(279)	(669)
Net income		490	1,047
Reclassification out of Accumulated Other Comprehensive Income | Amortization of deferred actuarial loss and prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Operating expenses	721	865	931
Income tax expense	(185)	(259)	(364)
Net income	$ 536	$ 606	$ 567

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Pension Benefits - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) bond	Dec. 31, 2017 USD ($)	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Normal retirement age (in years)	65 years
Early retirement age, low end of range (in years)	55 years
Early retirement age, high end of range (in years)	64 years
Attainment of credited service (in years)	10 years
Threshold age for reduction in early retirement benefit (in years)	62 years
Number of highest consecutive period of average compensation, used in plan benefit calculation (in years)	5 years
Period of average compensation, used in plan benefit calculation (in years)	10 years
Funded status (deficit)	$ (17.0)	$ (28.2)
AOCI, defined benefit plan, after tax	49.9	42.2
AOCI, defined benefit plan, tax	(8.8)	$ (0.3)
Estimated amount to be amortized from AOCI	$ 0.8
Number of a high grade bonds considered when selecting discount rate | bond	500
Expected return on plan assets	7.25%	7.25%	7.25%
Domestic equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocation, percent	9.00%
Fixed income securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocation, percent	64.00%
International Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocation, percent	12.00%
Alternatives
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocation, percent	15.00%

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Pension Benefits - Benefit Plan Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in benefit obligation:
Beginning balance	$ 218,746	$ 216,571	$ 223,389
Interest cost	7,386	8,283	8,901
Actuarial loss (gain)	(16,324)	11,402	(828)
Benefits paid	(8,056)	(17,510)	(14,891)
Benefit obligation at end of period	201,752	218,746	216,571
Change in fair value of plan assets:
Beginning balance	190,534	178,375	173,123
Actual return on assets	(2,497)	25,240	15,949
Employer contributions	6,000	6,000	6,000
Administrative fees	(1,223)	(1,571)	(1,806)
Benefits paid	(8,056)	(17,510)	(14,891)
Fair value of plan assets at end of period	$ 184,758	$ 190,534	$ 178,375

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Pension Benefits - Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Discount rate	4.05%	3.45%
Discount rate	3.45%	3.90%	4.10%
Expected return on plan assets	7.25%	7.25%	7.25%
Corridor	10.00%	10.00%	10.00%
Average future life expectancy (in years)	27 years 9 months 7 days	26 years 4 months	27 years 9 months 15 days

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Pension Benefits - Net Periodic Benefit and Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net periodic benefit cost:
Service cost	$ 1,300	$ 1,700	$ 2,400
Interest cost	7,386	8,283	8,901
Expected return on plan assets	(13,737)	(12,831)	(12,490)
Amortization of net actuarial loss	721	865	931
Total net periodic benefit	(4,330)	(1,983)	(258)
Other comprehensive income:
Current year actuarial gain	167	1,136	4,881
Recognized net actuarial loss	721	865	931
Total other comprehensive gain	$ 888	$ 2,001	$ 5,812

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Pension Benefits - Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	$ 184,758	$ 190,534	$ 178,375	$ 173,123
Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Redemption notice	65 days
Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Redemption notice	90 days
Large-Cap Disciplined Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	$ 22,022	27,765
Small/Mid-Cap Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets		3,433
International Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	15,894	24,383
Long Duration Fixed Income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	109,408	95,650
High Yield
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	4,965	8,559
Emerging Markets Debt
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	4,566	5,001
Other Investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	27,903	25,743
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	156,855	164,791
Quoted Prices in Active Markets for Identical Assets (Level 1) | Large-Cap Disciplined Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	22,022	27,765
Quoted Prices in Active Markets for Identical Assets (Level 1) | Small/Mid-Cap Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets		3,433
Quoted Prices in Active Markets for Identical Assets (Level 1) | International Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	15,894	24,383
Quoted Prices in Active Markets for Identical Assets (Level 1) | Long Duration Fixed Income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	109,408	95,650
Quoted Prices in Active Markets for Identical Assets (Level 1) | High Yield
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	4,965	8,559
Quoted Prices in Active Markets for Identical Assets (Level 1) | Emerging Markets Debt
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	4,566	5,001
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Large-Cap Disciplined Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Small/Mid-Cap Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets		0
Significant Observable Inputs (Level 2) | International Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Long Duration Fixed Income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | High Yield
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Emerging Markets Debt
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Other Investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Large-Cap Disciplined Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Small/Mid-Cap Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets		0
Significant Unobservable Inputs (Level 3) | International Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Long Duration Fixed Income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | High Yield
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Emerging Markets Debt
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Other Investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	$ 0	$ 0

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Pension Benefits - Plan Asset Activity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Beginning balance	$ 178,375
Actual return on plan assets:
Fair value of plan assets at end of period	190,534
Significant Unobservable Inputs (Level 3)
Actual return on plan assets:
Fair value of plan assets at end of period	0
Hedge Funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Beginning balance	9,967
Actual return on plan assets:
Relating to assets still held at the reporting date	0
Relating to assets sold during the period	(9,967)
Purchases, sales and settlements, net	0
Fair value of plan assets at end of period	$ 0

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Pension Benefits - Expected Cash Flows (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Estimated Future Employer Contributions
2019	$ 6,000
Expected benefit payments:
2019	9,823
2020	10,242
2021	10,649
2022	11,196
2023	11,547
2024 through 2028	61,609
Total expected benefit payments	$ 115,066

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Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of diluted earnings per share (in shares)													700	400	400
Calculation of earnings per common share
Net income attributable to Six Flags Entertainment Corporation common stockholders	$ 79,422	$ 184,417	$ 74,502	$ (62,345)	$ 98,013	$ 181,325	$ 52,026	$ (57,548)	$ 1,868	$ 102,482	$ 60,887	$ (46,935)	$ 275,996	$ 273,816	$ 118,302
Weighted-average common shares outstanding:
Weighted-average common shares outstanding—basic (in shares)													84,100	86,802	92,349
Effect of dilutive stock options and restricted stock units (in shares)													1,345	1,692	2,049
Weighted-average common shares outstanding—diluted (in shares)													85,445	88,494	94,398
Earnings per share - basic (in dollars per share)	$ 0.94	$ 2.19	$ 0.89	$ (0.74)	$ 1.16	$ 2.15	$ 0.60	$ (0.63)	$ 0.02	$ 1.11	$ 0.65	$ (0.51)	$ 3.28	$ 3.15	$ 1.28
Earnings per share - diluted (in dollars per share)	$ 0.93	$ 2.16	$ 0.88	$ (0.74)	$ 1.14	$ 2.11	$ 0.59	$ (0.63)	$ 0.02	$ 1.09	$ 0.64	$ (0.51)	$ 3.23	$ 3.09	$ 1.25

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Commitments and Contingencies - Additional Information (Details)					1 Months Ended		9 Months Ended	12 Months Ended
	Apr. 26, 2016 USD ($)	Jan. 07, 2016 USD ($)	Nov. 20, 2013 USD ($)	Apr. 01, 1998 USD ($)	May 31, 2018 USD ($) shares	May 31, 2017 USD ($) shares	Sep. 30, 2018	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) multiplier individual	Dec. 31, 2017 USD ($) claim	Dec. 31, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 20, 2011 USD ($)
Loss Contingencies [Line Items]
Acquisition of capital stock of the former Six Flags Entertainment Corporation, paid in cash				$ 976,000,000
Redeemable noncontrolling interest, equity, redemption value									$ 525,300,000
Total loans receivable from the partnerships that own partnership parks									239,300,000	$ 239,300,000
Rental expense under the rent agreements									18,600,000	5,900,000	$ 5,100,000
Total rental expense from continuing operations									$ 27,900,000	$ 16,100,000	$ 12,900,000
Percent of revenue									9.00%
New claims filed, number | claim										4
Minimum
Loss Contingencies [Line Items]
Range of possible loss		$ 1,000								$ 100
Maximum
Loss Contingencies [Line Items]
Range of possible loss		$ 5,000								$ 1,000
Multi-layered general liability policies
Loss Contingencies [Line Items]
Excess liability coverage per occurrence									$ 100,000,000.0
Self-insured retention per occurrence									2,000,000.0
Deductible per occurrence applicable to all claims in the policy year									500,000.0
Multi-layered general liability policies | November 16, 2003 - December 30, 2008
Loss Contingencies [Line Items]
Self-insured retention per occurrence									2,500,000.0
Multi-layered general liability policies | November 16, 2002 - November 15, 2003
Loss Contingencies [Line Items]
Self-insured retention per occurrence									2,000,000.0
Multi-layered general liability policies | November 16, 2001 - November 15, 2002
Loss Contingencies [Line Items]
Self-insured retention per occurrence									1,000,000.0
Multi-layered general liability policies | November 2, 2004 - December 30, 2008
Loss Contingencies [Line Items]
Additional one time self-insured retention									500,000.0
Workers' compensation claims
Loss Contingencies [Line Items]
Deductible per occurrence applicable to all claims in the policy year									750,000.00
Workers' compensation claims | November 16, 2001 - November 15, 2003
Loss Contingencies [Line Items]
Deductible per occurrence applicable to all claims in the policy year									500,000.0
Information security and privacy liability insurance policy
Loss Contingencies [Line Items]
Self-insured retention per occurrence									250,000.00
Insurance value maintained									$ 10,000,000.0
Personal Injury Due to SFOG Altercation
Loss Contingencies [Line Items]
Numbers of individuals who allegedly participated in the altercation | individual									4
Damages awarded, value			$ 35,000,000
Damages awarded, percentage allocated			92.00%
Self insurance reserve									$ 2,500,000.0
Personal Injury Due to SFDK Accident
Loss Contingencies [Line Items]
Self insurance reserve													$ 2,500,000.0
Personal Injury Due to Six Flags Great America Accident
Loss Contingencies [Line Items]
Damages awarded, value	$ 1,500,000
Amended and Restated Term Loan B
Loss Contingencies [Line Items]
Line of credit facility, additional contingent borrowing capacity												$ 350,000,000.0		$ 350,000,000
Six Flags over Texas and Georgia
Loss Contingencies [Line Items]
Share of partnership parks' annual distributions paid									$ 31,700,000
Rolling period for minimum capital expenditures							5 years
Percentage of capital expenditures to Partnership Parks' revenues									6.00%
Weighted average period of the park's EBITDA for calculation of value of purchase price (in years)									4 years
Capital expenditures incurred on parks									$ 21,200,000
Estimated capital expenditures on partnership parks in the next fiscal year									17,000,000
Cash generated from operating activities by partnerships, after deduction of capital expenditures and excluding the impact of short-term intercompany advances									$ 77,600,000
Six Flags over Texas and Georgia | Scenario, Forecast
Loss Contingencies [Line Items]
Annual distributions by general partners to limited partners in partnership parks								$ 72,500,000
Six Flags over Georgia
Loss Contingencies [Line Items]
Specified multiple for purchase price valuation (in multipliers) | multiplier									8.0
Specified price for purchase of partnership parks									$ 408,300,000
Limited partner interests owned (as a percent)									31.00%
Redeemable noncontrolling interest, equity, redemption value									$ 281,500,000
Remaining redeemable units (as a percent)									69.00%
Six Flags over Texas
Loss Contingencies [Line Items]
Specified multiple for purchase price valuation (in multipliers) | multiplier									8.5
Specified price for purchase of partnership parks									$ 520,500,000
Limited partner interests owned (as a percent)									53.20%
Units purchased in partnership parks (in shares) | shares					0.1750	0.0708
Units purchased pursuant to annual offer					$ 400,000	$ 100,000
Redeemable noncontrolling interest, equity, redemption value									$ 243,800,000
Remaining redeemable units (as a percent)									46.80%

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Commitments and Contingencies - Minimum Obligation on Leases (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2019	$ 23,936
2020	23,266
2021	22,384
2022	21,626
2023	21,563
2024 and thereafter	314,799
Operating Leases, Future Minimum Payments Due	$ 427,574

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Business Segments - Reconciliation of EBITDA (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	1
Net income	$ 316,003	$ 313,026	$ 156,727
Interest expense, net	107,243	99,010	81,872
Income tax expense	95,855	16,026	76,539
Depreciation and amortization	115,693	111,671	106,893
Corporate expenses	48,679	52,105	51,435
Stock-based compensation	(46,684)	(22,697)	116,339
Loss on disposal of assets	1,879	3,959	1,968
Loss on debt extinguishment	0	37,116	2,935
Other expense, net	3,508	271	1,684
Park EBITDA	$ 642,176	$ 610,487	$ 596,392

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Business Segments - Activity by Foreign and Domestic Categories (Details) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2018 USD ($) park	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2018 USD ($) park	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of parks owned or operated | park	25												25
Long-lived assets	$ 2,262,329				$ 2,219,792				$ 2,195,475				$ 2,262,329	$ 2,219,792	$ 2,195,475
Revenues	$ 269,503	$ 619,820	$ 445,420	$ 128,964	256,756	$ 580,418	$ 422,372	$ 99,528	239,314	$ 557,599	$ 407,066	$ 115,419	1,463,707	1,359,074	1,319,398
Income before income taxes													$ 411,858	329,052	233,266
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of parks owned or operated | park	2												2
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of parks owned or operated | park	1												1
Domestic
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 2,160,970				2,121,157				2,111,839				$ 2,160,970	2,121,157	2,111,839
Revenues													1,335,787	1,240,018	1,205,235
Income before income taxes													383,875	301,322	216,205
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 101,359				$ 98,635				$ 83,636				101,359	98,635	83,636
Revenues													127,920	119,056	114,163
Income before income taxes													$ 27,983	$ 27,730	$ 17,061

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Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 269,503	$ 619,820	$ 445,420	$ 128,964	$ 256,756	$ 580,418	$ 422,372	$ 99,528	$ 239,314	$ 557,599	$ 407,066	$ 115,419	$ 1,463,707	$ 1,359,074	$ 1,319,398
Net income attributable to Six Flags Entertainment Corporation common stockholders	$ 79,422	$ 184,417	$ 74,502	$ (62,345)	$ 98,013	$ 181,325	$ 52,026	$ (57,548)	$ 1,868	$ 102,482	$ 60,887	$ (46,935)	$ 275,996	$ 273,816	$ 118,302
Net (loss) income per weighted average common share outstanding:
Earnings per share - basic (in dollars per share)	$ 0.94	$ 2.19	$ 0.89	$ (0.74)	$ 1.16	$ 2.15	$ 0.60	$ (0.63)	$ 0.02	$ 1.11	$ 0.65	$ (0.51)	$ 3.28	$ 3.15	$ 1.28
Earnings per share - diluted (in dollars per share)	$ 0.93	$ 2.16	$ 0.88	$ (0.74)	$ 1.14	$ 2.11	$ 0.59	$ (0.63)	$ 0.02	$ 1.09	$ 0.64	$ (0.51)	$ 3.23	$ 3.09	$ 1.25
2017 Performance Award | Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative adjustment to allocated share-based compensation expense	$ 81,700					$ 45,000	$ 27,900

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Label	Element	Value
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ (87,833,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(509,994,000)
Additional Paid-in Capital [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	1,116,227,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	1,086,265,000
Common Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	2,271,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ 2,112,000
Shares, Issued	us-gaap_SharesIssued	90,849,428
Shares, Issued	us-gaap_SharesIssued	84,488,433
AOCI Attributable to Parent [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ (67,184,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(73,320,000)
Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(1,139,147,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(1,525,051,000)
Accounting Standards Update 2016-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	98,657,000
Accounting Standards Update 2016-09 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 98,657,000