10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

[ X ] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2018.

or

[    ] TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 1-12616

SUN COMMUNITIES, INC.

(Exact Name of Registrant as Specified in its Charter)

Maryland	38-2730780
(State of Incorporation)	(I.R.S. Employer Identification No.)
27777 Franklin Rd.
Suite 200
Southfield, Michigan	48034
(Address of Principal Executive Offices)	(Zip Code)

(248) 208-2500

(Registrant’s telephone number, including area code)

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 [ X ]  No [   ]

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted 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 and post such files).  Yes [ X ]  No [   ]

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. (Check one):

Large accelerated filer [ X ]	Accelerated filer [ ]	Non-accelerated filer [   ]
Smaller reporting company [   ]	Emerging growth company [ ]

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 to Section 13(a) of the Exchange Act. [ ]

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes [   ]  No [ X ]

Number of shares of Common Stock, $0.01 par value per share, outstanding as of October 18, 2018:  86,359,824

INDEX

PART I – FINANCIAL INFORMATION
Item 1.	Consolidated Financial Statements:
	Consolidated Balance Sheets as of September 30, 2018 (Unaudited) and December 31, 2017	1
	Consolidated Statements of Operations for the Three and Nine Months Ended September 30, 2018 and 2017 (Unaudited)	2
	Consolidated Statements of Comprehensive Income for the Three and Nine Months Ended September 30, 2018 and 2017 (Unaudited)	3
	Consolidated Statement of Stockholders’ Equity for the Nine Months Ended September 30, 2018 (Unaudited)	4
	Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2018 and 2017 (Unaudited)	5
	Notes to Consolidated Financial Statements	6
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	28
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	48
Item 4.	Controls and Procedures	48
PART II – OTHER INFORMATION
Item 1.	Legal Proceedings	49
Item 1A.	Risk Factors	49
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	49
Item 6.	Exhibits	50
	Signatures	51
	Exhibit Index	52

PART I – FINANCIAL INFORMATION

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS

SUN COMMUNITIES, INC.

CONSOLIDATED BALANCE SHEETS

(Unaudited - in thousands, except per share amounts)

	(unaudited)   September 30, 2018			December 31, 2017
ASSETS
Land	$	1,187,502		$	1,107,838
Land improvements and buildings	5,523,554			5,102,014
Rental homes and improvements	559,290			528,074
Furniture, fixtures and equipment	174,315			144,953
Investment property	7,444,661			6,882,879
Accumulated depreciation	(1,390,684		)	(1,237,525		)
Investment property, net (including $300,693 and $50,193 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	6,053,977			5,645,354
Cash and cash equivalents	113,556			10,127
Inventory of manufactured homes	41,030			30,430
Notes and other receivables, net	167,698			163,496
Collateralized receivables, net	112,228			128,246
Other assets, net (including $20,655 and $1,659 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	165,237			134,304
TOTAL ASSETS	$	6,653,726		$	6,111,957
LIABILITIES
Mortgage loans payable (including $44,426 and $41,970 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	$	2,819,225		$	2,867,356
Secured borrowings on collateralized receivables	113,089			129,182
Preferred Equity - Sun NG RV Resorts LLC - mandatorily redeemable (fully attributable to consolidated variable interest entities at September 30, 2018; See Note 8)	35,277			—
Preferred OP units - mandatorily redeemable	37,338			41,443
Lines of credit	—			41,257
Distributions payable	63,250			55,225
Advanced reservation deposits and rent	135,647			132,205
Other liabilities (including $7,434 and $1,468 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	163,459			138,536
TOTAL LIABILITIES	3,367,285			3,405,204
Commitments and contingencies	—			—
Series A-4 preferred stock, $0.01 par value. Issued and outstanding: 1,063 shares at September 30, 2018 and 1,085 shares at December 31, 2017	31,739			32,414
Series A-4 preferred OP units	10,026			10,652
Equity Interests - NG Sun LLC (fully attributable to consolidated variable interest entities at September 30, 2018; See Note 8)	21,976			—
STOCKHOLDERS' EQUITY
Common stock, $0.01 par value. Authorized: 180,000 shares; Issued and outstanding: 86,355 shares at September 30, 2018 and 79,679 shares at December 31, 2017	864			797
Additional paid-in capital	4,396,092			3,758,533
Accumulated other comprehensive (loss) / income	(390		)	1,102
Distributions in excess of accumulated earnings	(1,237,428		)	(1,162,001		)
Total Sun Communities, Inc. stockholders' equity	3,159,138			2,598,431
Noncontrolling interests
Common and preferred OP units	56,018			60,971
Consolidated variable interest entities	7,544			4,285
Total noncontrolling interests	63,562			65,256
TOTAL STOCKHOLDERS' EQUITY	3,222,700			2,663,687
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	6,653,726		$	6,111,957

See accompanying Notes to Consolidated Financial Statements.

1

SUN COMMUNITIES, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited - dollars in thousands, except per share amounts)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
REVENUES
Income from real property	$	229,607		$	198,263		$	625,488		$	560,778
Revenue from home sales	46,131			33,197			122,248			91,319
Rental home revenue	13,589			12,757			39,957			37,774
Ancillary revenues	27,608			17,017			46,207			32,086
Interest	5,256			5,920			15,849			15,609
Brokerage commissions and other revenues, net	1,347			1,091			3,131			2,978
Total revenues	323,538			268,245			852,880			740,544
EXPENSES
Property operating and maintenance	71,364			59,249			181,579			159,861
Real estate taxes	14,533			13,053			42,445			39,322
Cost of home sales	33,692			25,094			91,195			67,999
Rental home operating and maintenance	6,139			6,775			16,577			16,821
Ancillary expenses	15,361			10,086			28,985			21,995
Home selling expenses	4,043			3,290			11,319			9,391
General and administrative	20,127			18,174			61,432			55,912
Transaction costs	24			2,167			138			6,990
Catastrophic weather related charges, net	173			7,756			(1,987		)	8,124
Depreciation and amortization	71,982			64,232			206,192			189,719
Loss on extinguishment of debt	939			—			2,657			759
Interest	33,521			32,085			96,919			95,765
Interest on mandatorily redeemable preferred OP units / equity	1,142			790			2,551			2,361
Total expenses	273,040			242,751			740,002			675,019
Income before other items	50,498			25,494			112,878			65,525
Other income / (expense), net	1,231			3,345			(3,214		)	5,340
Current tax (expense) / benefit	(213		)	38			(612		)	(133		)
Deferred tax benefit	199			81			434			745
Net income	51,715			28,958			109,486			71,477
Less: Preferred return to preferred OP units / equity	(1,152		)	(1,112		)	(3,335		)	(3,482		)
Less: Amounts attributable to noncontrolling interests	(4,071		)	(1,776		)	(8,392		)	(4,179		)
Net income attributable to Sun Communities, Inc.	46,492			26,070			97,759			63,816
Less: Preferred stock distribution	(432		)	(1,955		)	(1,305		)	(6,233		)
Net income attributable to Sun Communities, Inc. common stockholders	$	46,060		$	24,115		$	96,454		$	57,583
Weighted average common shares outstanding:
Basic	81,599			78,369			80,022			75,234
Diluted	82,081			78,808			80,024			75,846
Earnings per share (Refer to Note 14):
Basic	$	0.56		$	0.31		$	1.19		$	0.76
Diluted	$	0.56		$	0.31		$	1.19		$	0.76

See accompanying Notes to Consolidated Financial Statements.

2

SUN COMMUNITIES, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited - dollars in thousands)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018			2017
Net income	$	51,715	$	28,958	$	109,486		$	71,477
Foreign currency translation adjustment	1,890		2,648		(1,565		)	4,977
Total comprehensive income	53,605		31,606		107,921			76,454
Less: Comprehensive income attributable to noncontrolling interests	4,167		1,912		8,319			4,444
Comprehensive income attributable to Sun Communities, Inc.	$	49,438	$	29,694	$	99,602		$	72,010

See accompanying Notes to Consolidated Financial Statements.

3

SUN COMMUNITIES, INC.

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2018

(Unaudited - dollars in thousands)

				Stockholders’ Equity
	Temporary Equity			Common Stock		Additional Paid-in Capital		Distributions in Excess of Accumulated Earnings			Accumulated Other Comprehensive Income / (Loss)			Non-controlling Interests			Total Stockholders’ Equity
Balance at December 31, 2017	$	43,066		$	797	$	3,758,533	$	(1,162,001	)	$	1,102		$	65,256		$	2,663,687
Issuance of common stock and common OP units, net	—			66		624,086		—			—			—			624,152
Conversion of OP units	(342		)	1		1,488		—			—			(1,147		)	342
Conversion of Series A-4 preferred stock	(675		)	—		675		—			—			—			675
Share-based compensation - amortization and forfeitures	—			—		11,310		247			—			—			11,557
Equity Interests - NG Sun LLC	21,976			—		—		—			—			—			—
Foreign currency translation	—			—		—		—			(1,492		)	(73		)	(1,565		)
Net income	225			—		—		101,093			—			8,168			109,261
Distributions	(509		)	—		—		(176,767		)	—			(8,642		)	(185,409		)
Balance at September 30, 2018	$	63,741		$	864	$	4,396,092	$	(1,237,428	)	$	(390	)	$	63,562		$	3,222,700

See accompanying Notes to Consolidated Financial Statements.

4

SUN COMMUNITIES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited - dollars in thousands)

	Nine Months Ended September 30,
	2018			2017
OPERATING ACTIVITIES:
NET CASH PROVIDED BY OPERATING ACTIVITIES	$	301,204		$	226,142
INVESTING ACTIVITIES:
Investment in properties	(257,017		)	(203,233		)
Acquisitions of properties, net of cash acquired	(305,724		)	(70,328		)
Proceeds from dispositions of assets and depreciated homes, net	34,825			6,592
Issuance of notes and other receivables	(216		)	(2,480		)
Repayments of notes and other receivables	2,880			1,764
Investment in affiliates	(19,851		)	—
NET CASH USED FOR INVESTING ACTIVITIES	(545,103		)	(267,685		)
FINANCING ACTIVITIES:
Issuance of common stock, OP units, and preferred OP units, net	624,152			457,638
Redemption of Series B-3 preferred OP units	(4,105		)	—
Borrowings on lines of credit	1,187,098			575,351
Payments on lines of credit	(1,228,907		)	(675,695		)
Proceeds from issuance of other debt	228,336			85,081
Payments on other debt	(273,380		)	(72,024		)
Prepayment penalty on debt	(2,024		)	(759		)
Redemption of Series A-4 preferred stock and OP units	—			(24,698		)
Distributions to stockholders, OP unit holders, and preferred OP unit holders	(177,926		)	(165,937		)
Payments for deferred financing costs	(1,645		)	(5,589		)
Other financing activities	(2,021		)	—
NET CASH PROVIDED BY FINANCING ACTIVITIES	349,578			173,368
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(94		)	253
Net change in cash, cash equivalents and restricted cash	105,585			132,078
Cash, cash equivalents and restricted cash, beginning of period	23,509			25,313
Cash, cash equivalents and restricted cash, end of period	$	129,094		$	157,391

5

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL INFORMATION:
Cash paid for interest (net of capitalized interest of $3,216 and $1,981 respectively)	$	94,801	$	92,362
Cash paid for interest on mandatorily redeemable debt	$	2,551	$	2,361
Cash paid (refunds) for income taxes	$	741	$	(53	)
Noncash investing and financing activities:
Reduction in secured borrowing balance	$	16,093	$	17,674
Change in distributions declared and outstanding	$	7,991	$	4,527
Conversion of common and preferred OP units	$	1,489	$	3,240
Conversion of Series A-4 preferred stock	$	675	$	4,720
Acquisitions - Common stock and OP units issued	$	—	$	28,410
Acquisitions - Equity Interests - NG Sun LLC (see Note 8)	$	21,976	$	—
Acquisitions - Preferred Equity - Sun NG RV Resorts LLC (see Note 8)	$	35,277	$	—
Acquisitions - debt assumed	$	3,120	$	4,592
Acquisitions - receivable due from seller	$	—	$	5,000

See accompanying Notes to Consolidated Financial Statements.

1.      Basis of Presentation

Sun Communities, Inc., a Maryland corporation, and all wholly-owned or majority-owned and controlled subsidiaries, including Sun Communities Operating Limited Partnership (the “Operating Partnership”) and Sun Home Services, Inc. (“SHS”) are referred to herein as the “Company,” “us,” “we,” and “our.”

We follow accounting standards set by the Financial Accounting Standards Board (“FASB”). FASB sets generally accepted accounting principles (“GAAP”), which we follow to ensure that we consistently report our financial condition, results of operations, and cash flows. References to GAAP issued by the FASB in these footnotes are to the FASB Accounting Standards Codification (“ASC”).

These unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial information and in accordance with GAAP. Pursuant to the SEC rules and regulations we present interim disclosures and certain information and footnote disclosures as required. Accordingly, the unaudited Consolidated Financial Statements do not include all of the information and footnotes required by GAAP for complete financial statements. The accompanying unaudited Consolidated Financial Statements reflect, in the opinion of management, all adjustments, including adjustments of a normal and recurring nature, necessary for a fair presentation of the interim financial statements. All intercompany transactions have been eliminated in consolidation. Certain reclassifications have been made to prior period financial statements in order to conform to current period presentation.

The results of operations for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. These unaudited Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2017 as filed with the SEC on February 22, 2018 (the “2017 Annual Report”). These statements have been prepared on a basis that is substantially consistent with the accounting principles applied in our 2017 Annual Report.

2. Revenue

Disaggregation of Revenue

The following tables disaggregates our revenue by major source (in thousands):

	Three Months Ended   September 30, 2018						Three Months Ended   September 30, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations		Home Sales and Rentals		Consolidated
REVENUE
Income from real property	$	229,607	$	—	$	229,607	$	198,263	$	—	$	198,263
Revenue from home sales	—		46,131		46,131		—		33,197		33,197
Rental home revenue	—		13,589		13,589		—		12,757		12,757
Ancillary revenues	27,608		—		27,608		17,017		—		17,017
Interest	5,256		—		5,256		5,920		—		5,920
Brokerage commissions and other revenues, net	1,347		—		1,347		1,091		—		1,091
Total revenue	$	263,818	$	59,720	$	323,538	$	222,291	$	45,954	$	268,245

6

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	Nine Months Ended   September 30, 2018						Nine Months Ended   September 30, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations		Home Sales and Rentals		Consolidated
REVENUE
Income from real property	$	625,488	$	—	$	625,488	$	560,778	$	—	$	560,778
Revenue from home sales	—		122,248		122,248		—		91,319		91,319
Rental home revenue	—		39,957		39,957		—		37,774		37,774
Ancillary revenues	46,207		—		46,207		32,086		—		32,086
Interest	15,849		—		15,849		15,609		—		15,609
Brokerage commissions and other revenues, net	3,131		—		3,131		2,978		—		2,978
Total revenue	$	690,675	$	162,205	$	852,880	$	611,451	$	129,093	$	740,544

Revenue Recognition Policies and Performance Obligations

On January 1, 2018, we adopted FASB Accounting Standards Update (“ASU”) 2014-09 “Revenue from Contracts with Customers” and the other related ASUs and amendments to the codification (collectively “ASC 606”). The core principle of ASC 606 is 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. A five-step transactional analysis is required to determine how and when to recognize revenue. ASC 606 applies to all contracts with customers, except those that are within the scope of other topics in the FASB accounting standards codification.

As a real estate owner and operator, the majority of our revenue is derived from site and home leases that are accounted for pursuant to ASC 840 “Leases.” For transactions in the scope of ASC 606, we recognize revenue when control of goods or services transfers to the customer, in the amount that we expect to receive for the transfer of goods or provision of services. The adoption of ASC 606 did not result in any change to our accounting policies for revenue recognition. Accordingly, retrospective application to prior periods or a cumulative catch-up adjustment was unnecessary.

Income from real property - Residents in our communities lease the site on which their home is located, and either own or lease their home. Lease revenues for sites and homes fall under the scope of ASC 840, and are accounted for as operating leases with straight-line recognition. Resident leases are generally for one-year or month-to-month terms, and are renewable by mutual agreement from us and the resident, or in some cases, as provided by jurisdictional statute. Non-lease components of our site lease contracts, which are primarily provision of utility services, are accounted for with the site lease as a single lease under ASC 840. Additionally, we include collections of real estate taxes from residents within Income from real property.

Revenue from home sales - Our taxable REIT subsidiary, SHS, sells manufactured homes (“MH”) to current and prospective residents in our communities. Prior to adoption of ASC 606, we recognized revenue for home sales pursuant to ASC 605 “Revenue Recognition,” as manufactured homes are tangible personal property that can be located on any land parcel. Manufactured homes are not permanent fixtures or improvements to the underlying real estate, and were therefore not considered to be subject to the guidance in ASC 360-20 “Real Estate Sales” by the Company. In accordance with the core principle of ASC 606, we recognize revenue from home sales at the time of closing when control of the home transfers to the customer. After closing of the sale transaction, we have no remaining performance obligation.

Rental home revenue - is comprised of rental agreements whereby we lease homes to residents in our communities. We account for these revenues under ASC 840.

Ancillary revenues - are primarily composed of proceeds from restaurant, golf, merchandise and other activities at our recreational vehicle (“RV”) communities. Revenues are recognized at point of sale when control of the good or service transfers to the customer and our performance obligation is satisfied. Sales and other taxes that we collect concurrent with revenue-producing activities are excluded from transaction price.

Interest income - is earned primarily on our notes and collateralized receivables, which includes installment loans for manufactured homes purchased by the Company from loan originators and transferred loans that previously did not meet the requirements for sale accounting. Interest income on these receivables is accrued based on the unpaid principal balances of the underlying loans on a level yield basis over the life of the loans. Interest income is not in the scope of ASC 606. Refer to Notes 4, “Collateralized Receivables and Transfers of Financial Assets” and 5, “Notes and Other Receivables” for additional information.

7

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Broker commissions and other revenues, net - is primarily comprised of brokerage commissions for sales of manufactured homes, where we act as agent and arrange for a third-party to transfer a manufactured home to a customer within one of our communities. Brokerage commission revenues are recognized on a net basis at closing, when the transaction is completed and our performance obligations have been fulfilled. Loan loss reserve expenses for our collateralized receivables and notes receivables are also included herein. Refer to Notes 4, “Collateralized Receivables and Transfers of Financial Assets” and 5, “Notes and Other Receivables” for additional information regarding our loan loss reserves.

Contract Balances

As of September 30, 2018 and December 31, 2017, we had $19.8 million and $13.8 million, respectively, of receivables from contracts with customers. Receivables from contracts with customers are presented as a component of Notes and other receivables on our Consolidated Balance Sheets. These receivables represent balances owed to us for previously completed performance obligations for sales of manufactured homes. Due to the nature of our revenue from contacts with customers, we do not have material contract assets or liabilities that fall under the scope of ASC 606.

3.      Real Estate Acquisitions

2018 Acquisitions

In 2018 we acquired the following communities:

Community Name	Type	Sites	Development Sites	State	Month Acquired
Archview	RV	114	50	UT	August
Petoskey KOA	RV	210	—	MI	August
The Sands RV and Golf Resort	RV (Age Restricted)	507	—	CA	July
Sun NG RV Resorts LLC (1)	RV	2,700	940	Various	June
Silver Creek	RV	264	176	MI	June
Highway West (Four Resorts)	RV	536	—	UT & OR	June
Compass RV	RV	175	—	FL	May
	Total	4,506	1,166

⁽¹⁾ Refer to Note 8, “Consolidated Variable Interest Entities,” Note 9, “Debt and Lines of Credit,” and Note 10, “Equity and Mezzanine Securities” for additional information.

The following table summarizes the amounts of assets acquired net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2018 (in thousands):

At Acquisition Date	Archview		Petoskey KOA		Sands		Sun NG Resorts			Silver Creek		Highway West		Compass		Total
Investment in property	$	14,550	$	9,000	$	13,790	$	240,649		$	7,250	$	36,500	$	13,930	$	335,669
In-place leases and other intangible assets	—		—		460		16,339			—		—		70		16,869
Debt assumed	—		—		—		(3,120		)	—		—		—		(3,120		)
Other liabilities, net	—		—		—		(11,990		)	—		—		—		(11,990		)
Total identifiable assets acquired net of liabilities assumed	$	14,550	$	9,000	$	14,250	$	241,878		$	7,250	$	36,500	$	14,000	$	337,428
Consideration
Cash	$	14,550	$	9,000	$	14,250	$	184,625		$	7,250	$	36,500	$	14,000	$	280,175
Preferred Equity - Sun NG Resorts	—		—		—		35,277			—		—		—		35,277
Equity Interests - NG Sun LLC	—		—		—		21,976			—		—		—		21,976
Total consideration	$	14,550	$	9,000	$	14,250	$	241,878		$	7,250	$	36,500	$	14,000	$	337,428

8

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

In 2018, we acquired the following land for expansion / development:

Name	Location	Type	Expansion / Development Sites	Cost (millions)		Month Acquired
Pecan Park	Jacksonville, FL	RV	158	$	1.3	September
Smith Creek Crossing	Granby, CO	MH	310	$	0.9	September
River Run Ranch	Granby, CO	MH / RV	1,144	$	5.3	May
		Total	1,612	$	7.5

Refer to Note 18, “Subsequent Events,” for information regarding real estate acquisition activity after September 30, 2018.

The total amount of revenues and net income included in the Consolidated Statements of Operations for the three and nine months ended September 30, 2018 related to the acquisitions completed in 2018 are set forth in the following table (in thousands):

	Three Months Ended   September 30, 2018		Nine Months Ended   September 30, 2018
	(unaudited)		(unaudited)
Total revenues	$	26,317	$	33,433
Net income	$	7,529	$	11,356

The following unaudited pro forma financial information presents the results of our operations for the three and nine months ended September 30, 2018 and 2017, as if the properties acquired in 2018 had been acquired on January 1, 2017. The unaudited pro forma results reflect certain adjustments for items that are not expected to have a continuing impact, such as adjustments for transaction costs incurred, management fees, and purchase accounting.

The information presented below has been prepared for comparative purposes only and does not purport to be indicative of either future results of operations or the results of operations that would have actually occurred had the acquisition been consummated on January 1, 2017 (in thousands, except per-share data):

	Three Months Ended September 30,				Nine Months Ended September 30,
	(unaudited)				(unaudited)
	2018		2017		2018		2017
Total revenues	$	325,504	$	296,322	$	861,193	$	780,529
Net income attributable to Sun Communities, Inc. common stockholders	$	57,413	$	42,987	$	93,714	$	68,378
Net income per share attributable to Sun Communities, Inc. common stockholders - basic	$	0.70	$	0.55	$	1.17	$	0.91
Net income per share attributable to Sun Communities, Inc. common stockholders - diluted	$	0.70	$	0.55	$	1.17	$	0.90

2017 Acquisitions

In 2017, we acquired the following communities:

9

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Community Name	Type	Sites	Development Sites	State	Month Acquired
Colony in the Wood	MH (Age Restricted)	383	—	FL	December
Emerald Coast	MH and RV	201	14	FL	November
Lazy J Ranch	MH (Age Restricted)	220	—	CA	September
Ocean West	MH (Age Restricted)	130	4	CA	September
Caliente Sands	MH (Age Restricted)	118	—	CA	September
Pismo Dunes	RV (Age Restricted)	331	—	CA	July
Arbor Woods	MH	458	—	MI	June
Sunset Lakes	RV	498	—	IL	May
49er Village	RV	328	—	CA	March
	Total	2,667	18

The following table summarizes the amounts of assets acquired net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2017 (in thousands):

At Acquisition Date	Colony in the Wood		Emerald Coast		Lazy J Ranch		Ocean West		Caliente Sands		Pismo Dunes			Arbor Woods		Sunset Lakes		49er Village		Total
Investment in property	$	31,818	$	19,400	$	13,938	$	9,453	$	8,640	$	21,260		$	15,725	$	7,835	$	12,890	$	140,959
Notes receivable	—		—		—		—		—		—			23		—		—		23
Inventory of manufactured homes	—		—		2		—		21		—			465		—		—		488
In-place leases and other intangible assets	660		100		360		220		210		660			730		210		110		3,260
Total identifiable assets acquired net of liabilities assumed	$	32,478	$	19,500	$	14,300	$	9,673	$	8,871	$	21,920		$	16,943	$	8,045	$	13,000	$	144,730
Consideration
Cash	$	32,478	$	19,500	$	14,300	$	5,081	$	8,871	$	—		$	14,943	$	8,045	$	13,000	$	116,218
Equity	—		—		—		—		—		26,410			2,000		—		—		28,410
Liabilities assumed	—		—		—		4,592		—		510			—		—		—		5,102
Cash proceeds from seller	—		—		—		—		—		(5,000		)	—		—		—		(5,000		)
Total consideration	$	32,478	$	19,500	$	14,300	$	9,673	$	8,871	$	21,920		$	16,943	$	8,045	$	13,000	$	144,730

In 2017, we acquired the following land for expansion:

Development Name	Location	Type	Development Sites	Cost (millions)		Month Acquired
Carolina Pines	Myrtle Beach, SC	RV	841	$	5.9	April
		Total	841

4.      Collateralized Receivables and Transfers of Financial Assets

We previously completed various transactions with an unrelated entity involving our notes receivable under which we received cash proceeds in exchange for relinquishing our right, title, and interest in certain notes receivable. We have no further obligations

10

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

or rights with respect to the control, management, administration, servicing, or collection of the installment notes receivable. However, we are subject to certain recourse provisions requiring us to purchase the underlying homes collateralizing such notes, in the event of a note default and subsequent repossession of the home by the unrelated entity. The recourse provisions are considered to be a form of continuing involvement, and therefore these transferred loans did not meet the requirements for sale accounting. We continue to recognize these transferred loans on our balance sheet and refer to them as collateralized receivables. The proceeds from the transfer have been recognized as a secured borrowing.

In the event of a note default and subsequent repossession of a manufactured home by the unrelated entity, the terms of the agreement require us to repurchase the manufactured home. Default is defined as the failure to repay the installment note receivable according to contractual terms. The repurchase price is calculated as a percentage of the outstanding principal balance of the collateralized receivable, plus any outstanding late fees, accrued interest, legal fees, and escrow advances associated with the installment note receivable. The percentage used to determine the repurchase price of the outstanding principal balance on the installment note receivable is based on the number of payments made on the note. In general, the repurchase price is determined as follows:

Number of Payments	Repurchase Percentage
Fewer than or equal to 15	100	%
Greater than 15 but fewer than 64	90	%
Equal to or greater than 64 but fewer than 120	65	%
120 or more	50	%

The transferred assets have been classified as Collateralized receivables, net and the cash proceeds received from these transactions have been classified as Secured borrowings on collateralized receivables within the Consolidated Balance Sheets. The balance of the collateralized receivables was $112.2 million (net of allowance of $0.9 million) and $128.2 million (net of allowance of $0.9 million) as of September 30, 2018 and December 31, 2017, respectively. The receivables have a weighted average interest rate and maturity of 10.0 percent and 14.3 years as of September 30, 2018, and 10.0 percent and 15.3 years as of December 31, 2017.

The outstanding balance on the secured borrowing was $113.1 million and $129.2 million as of September 30, 2018 and December 31, 2017, respectively.

The collateralized receivables earn interest income, and the secured borrowings accrue interest expense at the same interest rates. The amount of interest income and expense recognized was $2.8 million and $3.3 million for the three months ended September 30, 2018 and 2017, respectively, and $8.5 million and $9.9 million for the nine months ended September 30, 2018 and 2017, respectively.

The balances of the collateralized receivables and secured borrowings are reduced as the related collateralized receivables are collected from the customers, or as the underlying collateral is repurchased. The change in the aggregate gross principal balance of the collateralized receivables is as follows (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	129,182
Principal payments and payoffs from our customers	(9,386		)
Principal reduction from repurchased homes	(6,707		)
Total activity	(16,093		)
Ending balance	$	113,089

The following table sets forth the allowance for the collateralized receivables as of September 30, 2018 (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	(936	)
Lower of cost or market write-downs	587
Increase to reserve balance	(512		)
Total activity	75
Ending balance	$	(861	)

11

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

5.      Notes and Other Receivables

The following table sets forth certain information regarding notes and other receivables (in thousands):

	September 30, 2018		December 31, 2017
Installment notes receivable on manufactured homes, net	$	117,583	$	115,797
Other receivables, net	50,115		47,699
Total notes and other receivables, net	$	167,698	$	163,496

Installment Notes Receivable on Manufactured Homes

Our investment in installment notes of $117.6 million (net of allowance of $0.6 million) and $115.8 million (net of allowance of $0.4 million) as of September 30, 2018 and December 31, 2017, respectively, are collateralized by manufactured homes. The notes represent financing to purchasers of manufactured homes primarily located in our communities and require monthly principal and interest payments. The notes have a net weighted average interest rate (net of servicing costs) and maturity of 8.0 percent and 16.8 years as of September 30, 2018, and 8.2 percent and 17.2 years as of December 31, 2017, respectively.

The change in the aggregate gross principal balance of the installment notes receivable is as follows (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	116,174
Investment in installment notes	14,042
Principal payments and payoffs from customers	(6,721		)
Principal reduction from repossessed homes	(5,296		)
Total activity	2,025
Ending balance	$	118,199

Allowance for Losses for Installment Notes Receivable

The following table sets forth the allowance change for the installment notes receivable as follows (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	(377	)
Lower of cost or market write-downs	522
Increase to reserve balance	(761		)
Total activity	(239		)
Ending balance	$	(616	)

Other Receivables

As of September 30, 2018, other receivables were comprised of amounts due from: residents for rent and water and sewer usage of $7.9 million (net of allowance of $1.8 million); home sale proceeds of $19.8 million; and insurance and other receivables of $22.4 million. As of December 31, 2017, other receivables were comprised of amounts due from: residents for rent and water and sewer usage of $7.0 million (net of allowance of $1.5 million); home sale proceeds of $13.8 million; and insurance and other receivables of $26.9 million.

6. Intangible Assets

Our intangible assets include ground leases, in-place leases, franchise agreements and other intangible assets. These intangible assets are recorded in Other assets, net on the Consolidated Balance Sheets.

12

In June 2018, we acquired 50 percent of a land parcel that was previously subject to a ground lease at one of our California communities for $8.0 million. As a result of the transaction, we wrote off $1.1 million of the gross carrying amount of the ground lease intangible and $0.3 million of the related accumulated amortization. The $0.8 million net write off is included within the Property operating and maintenance expenses in our Consolidated Statements of Operations for the three months ended June 30, 2018.

The gross carrying amounts, and accumulated amortization are as follows (in thousands):

		September 30, 2018					December 31, 2017
Intangible Asset	Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Ground leases	8-57 years	$	31,060	$	(1,755	)	$	32,165	$	(1,409	)
In-place leases	7 years	103,598		(55,881		)	100,843		(45,576		)
Franchise agreements and other intangible assets	7-15 years	16,521		(2,190		)	1,880		(1,451		)
Total		$	151,179	$	(59,826	)	$	134,888	$	(48,436	)

Total amortization expenses related to the intangible assets are as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Intangible Asset	2018		2017		2018		2017
Ground leases	$	188	$	257	$	633	$	771
In-place leases	3,320		3,478		10,305		10,322
Franchise agreements and other intangible assets	717		19		755		277
Total	$	4,225	$	3,754	$	11,693	$	11,370

We anticipate amortization expense for our intangible assets to be as follows for the next five years (in thousands):

	Year
	Remainder of 2018		2019		2020		2021		2022
Estimated expense	$	4,055	$	15,960	$	14,232	$	13,840	$	9,239

7.      Investment in Affiliates

GTSC LLC (“GTSC”)

In February 2018, the Company became a noncontrolling member of GTSC. GTSC engages in acquiring, holding and selling loans secured, directly or indirectly, by manufactured homes located in communities of Sun Communities. At September 30, 2018, we had a 40 percent ownership interest in GTSC. The remaining 60 percent interest is owned by an unrelated third-party. We account for our interest in GTSC under the equity method of accounting as prescribed by FASB ASC Topic 323 “Investments - Equity Method and Joint Ventures.” Based on the power and economics criteria under the variable interest entity (“VIE”) model in ASC 810, we are not the primary beneficiary of GTSC. During the three and nine months ended September 30, 2018, there was $0.1 million net gain in Brokerage commissions and other revenues, net respectively on the Consolidated Statement of Operations related to our ownership interest. Our investment in GTSC as of September 30, 2018, is $19.9 million and recorded within Other assets, net on the Consolidated Balance Sheet.

13

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

8.      Consolidated Variable Interest Entities

Effective June 1, 2018, the Company acquired a majority interest in Sun NG RV Resorts LLC (“Sun NG Resorts”), which is comprised of ten RV resorts and one ground up RV development with 2,700 RV sites and an additional 940 sites available for development. The Company purchased an 80 percent interest in Sun NG Resorts for $61.6 million through Sun NG LLC; the remaining 20 percent interest of $15.4 million is held by NG Sun LLC, an unrelated third-party. Sun paid additional consideration of $123.3 million, consisting of a $1.8 million preferred equity investment and a $121.5 million temporary loan to Sun NG Resorts.

We consolidate Sun NG Resorts under the guidance set forth in FASB ASC Topic 810 “Consolidation.” We concluded that Sun NG Resorts is a variable interest entity where we are the primary beneficiary, as we have power to direct the significant activities, absorb the significant losses and receive the significant benefits from the entity. Refer to Note 3, “Real Estate Acquisitions,” Note 9, “Debt and Lines of Credit,” and Note 10, “Equity and Mezzanine Securities” for additional information.

We consolidate Rudgate Village SPE, LLC; Rudgate Clinton SPE, LLC; and Rudgate Clinton Estates SPE, LLC (collectively, “Rudgate”) as a VIE. We evaluated our arrangement with this property under the guidance set forth in FASB ASC Topic 810 “Consolidation.” We concluded that Rudgate qualified as a VIE where we are the primary beneficiary, as we have power to direct the significant activities, absorb the significant losses and receive the significant benefits from the entity.

The following table summarizes the assets and liabilities included in our Consolidated Balance Sheets after eliminations (in thousands):

	September 30, 2018		December 31, 2017
ASSETS
Investment property, net	$	300,693	$	50,193
Other assets, net	20,655		1,659
TOTAL ASSETS	$	321,348	$	51,852
LIABILITIES AND STOCKHOLDERS’ EQUITY
Debt	$	44,426	$	41,970
Preferred Equity - Sun NG Resorts - mandatorily redeemable	35,277		—
Other liabilities	7,434		1,468
TOTAL LIABILITIES	87,137		43,438
Equity Interests - NG Sun LLC	21,976		—
Noncontrolling interests	7,544		4,285
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	116,657	$	47,723

Investment property, net and other assets, net related to the consolidated VIEs comprised approximately 4.8 percent and 0.8 percent of our consolidated total assets at September 30, 2018 and December 31, 2017, respectively. Debt, Preferred Equity and other liabilities comprised approximately 2.6 percent and 1.2 percent of our consolidated total liabilities at September 30, 2018 and December 31, 2017, respectively. Equity Interests and Noncontrolling interests related to the consolidated VIEs, on an absolute basis, comprised less than 1.0 percent of our consolidated total equity at September 30, 2018 and at December 31, 2017.

9.      Debt and Lines of Credit

The following table sets forth certain information regarding debt including premiums, discounts and deferred financing costs (in thousands):

14

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	Carrying Amount				Weighted Average Years to Maturity		Weighted Average Interest Rates
	September 30, 2018		December 31, 2017		September 30, 2018	December 31, 2017	September 30, 2018		December 31, 2017
Collateralized term loans - Life Companies	$	1,253,935	$	1,044,246	14.4	13.9	4.0	%	3.9	%
Collateralized term loans - FNMA	775,383		1,026,014		5.4	5.6	4.4	%	4.4	%
Collateralized term loans - CMBS	407,778		410,747		4.3	5.0	5.1	%	5.1	%
Collateralized term loans - FMCC	382,129		386,349		6.1	6.9	3.9	%	3.9	%
Secured borrowings	113,089		129,182		14.6	15.3	10.0	%	10.0	%
Lines of credit	—		41,257		0.0	3.1	—	%	2.8	%
Preferred Equity - Sun NG Resorts - mandatorily redeemable	35,277		—		4.0	-	6.0	%	—	%
Preferred OP units - mandatorily redeemable	37,338		41,443		4.9	5.0	6.6	%	6.7	%
Total debt	$	3,004,929	$	3,079,238	9.4	8.9	4.5	%	4.5	%

Collateralized Term Loans

During the three months ended September 30, 2018, we entered into a $228.0 million collateralized term loan with a 4.10 percent fixed rate and a 20-year term.

During the three months ended September 30, 2018, we repaid one collateralized term loan of $30.5 million with an interest rate of 6.34 percent, releasing one encumbered community, which was due to mature March 1, 2019. We recognized a loss on extinguishment of debt of $0.3 million as a result of the repayment transaction in our Consolidated Statement of Operations.

During the three months ended June 30, 2018 we repaid three collateralized term loans totaling $177.7 million with a weighted average interest rate of 4.53 percent, releasing 11 encumbered communities. One loan was due to mature on August 1, 2018 and two loans were due to mature on May 1, 2023. We recognized a loss on extinguishment of debt of $1.5 million as a result of the repayment transaction.

During the three months ended March 31, 2018, we repaid four collateralized term loans totaling $24.4 million with a weighted average interest rate of 6.36 percent, releasing three encumbered communities. The loans were due to mature on March 1, 2019. We recognized a loss on extinguishment of debt of $0.2 million as a result of the repayment transactions.

In December 2017, we defeased a $38.6 million collateralized term loan with a 5.25 percent fixed interest rate that was due to mature on June 1, 2022. As a result of the transaction we recognized a loss on extinguishment of debt of $5.2 million in our Consolidated Statements of Operations. Concurrent with the defeasance, we entered into a new $100.0 million collateralized term loan, encumbered by the same property, with a 4.25 percent fixed rate of interest and 30-year term.

In September 2017, in connection with the Ocean West acquisition, we assumed a $4.6 million collateralized term loan with Fannie Mae, with an interest rate of 4.34 percent and a remaining term of 9.8 years.

In June 2017, we entered into a $77.0 million collateralized term loan which bears interest at a rate of 4.16 percent amortizing over a 25-year term. We also repaid a $3.9 million collateralized term loan with an interest rate of 6.54 percent that was due to mature on August 31, 2017. As a result of the repayment transaction, we recognized a loss on extinguishment of debt of $0.3 million in our Consolidated Statements of Operations.

During the first quarter of 2017, we defeased an $18.9 million collateralized term loan with an interest rate of 6.49 percent that was due to mature on August 1, 2017, releasing one encumbered community. As a result of the transaction, we recognized a loss on extinguishment of debt of $0.5 million in our Consolidated Statements of Operations. In addition, we repaid a $10.0 million collateralized term loan with an interest rate of 5.57 percent that was due to mature on May 1, 2017, releasing an additional encumbered community.

15

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The collateralized term loans totaling $2.8 billion as of September 30, 2018, are secured by 185 properties comprised of 72,620 sites representing approximately $3.2 billion of net book value.

Secured Borrowing

See Note 4, “Collateralized Receivables and Transfers of Financial Assets,” for information regarding our collateralized receivables and secured borrowing transactions.

Preferred OP Units

Preferred OP units at September 30, 2018 and December 31, 2017 include $34.7 million of Aspen preferred OP units issued by the Operating Partnership. As of September 30, 2018, these units are convertible indirectly into 447,674 shares of our common stock. Subject to certain limitations, at any time prior to January 1, 2024, the holder of each Aspen preferred OP unit at its option may convert such Aspen preferred OP unit into: (a) if the market price of our common stock is $68.00 per share or less, 0.397 common OP units; or (b) if the market price of our common stock is greater than $68.00 per share, the number of common OP units is determined by dividing (i) the sum of (A) $27.00 plus (B) 25 percent of the amount by which the market price of our common stock exceeds $68.00 per share, by (ii) the per share market price of our common stock. The current preferred distribution rate is 6.5 percent. On January 2, 2024, we are required to redeem all Aspen preferred OP units that have not been converted to common OP units.

Preferred OP units also include $2.7 million and $6.7 million at September 30, 2018 and December 31, 2017, respectively, of Series B-3 preferred OP units, which are not convertible. During the nine months ended September 30, 2018, we redeemed 41,051 of the Series B-3 preferred OP units at an average redemption price per unit, which included accrued and unpaid distributions, of $100.065753. In the aggregate, we paid $4.1 million to redeem these units.

Subject to certain limitations, (a) during the 90-day period beginning on each of the tenth through fifteenth anniversaries of the issue date of the applicable Series B-3 preferred OP units, (b) at any time after the fifteenth anniversary of the issue date of the applicable Series B-3 preferred OP units, or (c) after our receipt of notice of the death of the electing holder of a Series B-3 preferred OP unit, each holder of Series B-3 preferred OP units may require us to redeem such holder's Series B-3 preferred OP units at the redemption price of $100.00 per unit. In addition, at any time after the fifteenth anniversary of the issue date of the applicable Series B-3 preferred OP units we may redeem, at our option, all of the Series B-3 preferred OP units of any holder thereof at the redemption price of $100.00 per unit.

Preferred Equity - Sun NG Resorts - mandatorily redeemable

In June 2018, in connection with the investment in Sun NG Resorts, $35.3 million of mandatorily redeemable Preferred Equity (“Preferred Equity - Sun NG Resorts”) was purchased by unrelated third parties. The Preferred Equity - Sun NG Resorts carries a preferred rate of return of 6.0 percent per annum. The Preferred Equity - Sun NG Resorts has a seven-year term and can be redeemed in the fourth quarter of 2022 at the holders’ option. The Preferred Equity - Sun NG Resorts as of September 30, 2018 was $35.3 million. Refer to Note 3, “Real Estate Acquisitions,” Note 8, “Consolidated Variable Interest Entities,” and Note 10, “Equity and Mezzanine Securities” for additional information.

Lines of Credit

In April 2017, we amended and restated our credit agreement (the “A&R Credit Agreement”) with Citibank, N.A. (“Citibank”) and certain other lenders. Pursuant to the A&R Credit Agreement, we entered into a senior revolving credit facility with Citibank and certain other lenders in the amount of $650.0 million, comprised of a $550.0 million revolving loan and a $100.0 million term loan (the “A&R Facility”). We repaid the term loan in full on September 7, 2018.The A&R Credit Agreement has a four-year term ending April 25, 2021, which can be extended for two additional six-month periods at our option, subject to the satisfaction of certain conditions as defined in the credit agreement. The A&R Credit Agreement also provides for, subject to the satisfaction of certain conditions, additional commitments in an amount not to exceed $350.0 million. If additional borrowings are made pursuant to any such additional commitments, the aggregate borrowing limit under the A&R Facility may be increased up to $900.0 million.

The A&R Facility bears interest at a floating rate based on the Eurodollar rate plus a margin that is determined based on our leverage ratio calculated in accordance with the A&R Credit Agreement, which margin can range from 1.35 percent to 2.20 percent for the revolving loan and could range from 1.30 percent to 2.15 percent for the term loan. As of September 30, 2018, the margin

16

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

based on our leverage ratio was 1.35 percent and 1.30 percent on the revolving and term loans, respectively. We had no borrowings on the revolving loan and no borrowings on the term loan as of September 30, 2018.

The A&R Facility provides us with the ability to issue letters of credit. Our issuance of letters of credit does not increase our borrowings outstanding under our line of credit, but does reduce the borrowing amount available. At September 30, 2018 and December 31, 2017, approximately $4.2 million and $1.3 million, respectively, of availability was used to back standby letters of credit.

We have a $12.0 million manufactured home floor plan facility renewable indefinitely until our lender provides us at least a twelve month notice of their intent to terminate the agreement. The interest rate is 100 basis points over the greater of the prime rate as quoted in the Wall Street Journal on the first business day of each month or 6.0 percent. At September 30, 2018, the effective interest rate was 7.0 percent. The outstanding balance was zero as of September 30, 2018 and $4.0 million as of December 31, 2017.

Covenants

Pursuant to the terms of the A&R Facility, we are subject to various financial and other covenants. The most restrictive of our debt agreements place limitations on secured borrowings and contain minimum fixed charge coverage, leverage, distribution, and net worth requirements. At September 30, 2018, we were in compliance with all covenants.

In addition, certain of our subsidiary borrowers own properties that secure loans. These subsidiaries are consolidated within our accompanying Consolidated Financial Statements, however, each of these subsidiaries’ assets and credit are not available to satisfy the debts and other obligations of the Company, any of its other subsidiaries or any other person or entity.

17

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

10.      Equity and Mezzanine Securities

Public Equity Offerings

In September 2018, we closed an underwritten registered public offering of 5,060,000 shares of common stock. Proceeds from the offering were $499.9 million after deducting expenses related to the offering. We used the net proceeds of this offering to repay borrowings under the revolving loan and the term loan under our senior credit facility. The Company intends to use the remaining net proceeds of this offering to fund possible future acquisitions and for working capital and general corporate purposes.

In May 2017, we closed an underwritten registered public offering of 4,830,000 shares of common stock. Proceeds from the offering were $408.9 million after deducting expenses related to the offering, which were used to repay borrowings outstanding under the revolving loan under our A&R Facility, fund acquisitions, working capital and general corporate purposes.

At the Market Offering Sales Agreement

In July 2017, we entered into a new at the market offering sales agreement (the “Sales Agreement”) with BMO Capital Markets Corp., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc., Robert W. Baird & Co. Incorporated, Fifth Third Securities, Inc., RBC Capital Markets, LLC, BTIG, LLC, Jefferies LLC, Credit Suisse Securities (USA) LLC and Samuel A. Ramirez & Company, Inc. (each, a “Sales Agent;” collectively, the “Sales Agents”), whereby we may offer and sell shares of our common stock, having an aggregate offering price of up to $450.0 million, from time to time through the Sales Agents. The Sales Agents are entitled to compensation in an agreed amount not to exceed 2.0 percent of the gross price per share for any shares sold from time to time under the Sales Agreement. Through September 30, 2018, we have sold shares of our common stock for gross proceeds of $163.8 million under the Sales Agreement.

Issuances of common stock under the Sales Agreement during 2018 were as follows:

Year to Date	Common Stock Issued	Weighted Average Sales Price		Net Proceeds (in Millions)
September 30, 2018	1,407,215	$	95.02	$	132.0

Equity Interests - NG Sun LLC

In June 2018, in connection with the investment in Sun NG Resorts, unrelated third parties purchased $6.5 million of Series B preferred equity interests and $15.4 million of common equity interest (herein jointly referred to as “Equity Interest - NG Sun LLC”). The Series B preferred equity interests carry a preferred return at a rate that, at any time, is equal to the interest rate on Sun NG Resorts indebtedness at such time. The current rate of return is 5.0 percent. The Equity Interests - NG Sun LLC do not have a fixed maturity date and can be redeemed in the fourth quarter of 2022 at the holders option. Sun NG LLC, our subsidiary, has the right during certain periods each year, with or without cause, or for cause at any time, to elect to buy NG Sun LLC’s interest.  During a limited period in 2022, NG Sun LLC has the right to put its interest to Sun NG LLC.  If either party exercises their option, the property management agreement will be terminated and the Company is required to purchase the remaining interests of NG Sun LLC and the property management agreement at fair value. Refer to Note 3, “Real Estate Acquisitions,” Note 8, “Consolidated Variable Interest Entities,” and Note 9, “Debt and Lines of Credit” for additional information.

Issuance of Common Stock and Common OP Units

In July 2017, we issued 298,900 shares of common stock totaling $26.4 million in connection with the acquisition of Pismo Dunes.

In June 2017, we issued a total of 23,311 common OP units for total consideration of $2.0 million in connection with acquisition activity during the three months ended June 30, 2017.

Conversions

Subject to certain limitations, holders can convert certain series of stock and OP units to shares of our common stock at any time. Below is the activity of conversions during the nine months ended September 30, 2018 and 2017:

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SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

		Nine Months Ended   September 30, 2018		Nine Months Ended   September 30, 2017
Series	Conversion Rate	Units/Shares Converted	Common Stock	Units/Shares Converted	Common Stock
Common OP unit	1	16,908	16,908	25,238	25,238
Series A-1 preferred OP unit	2.439	13,100	31,948	18,319	44,676
Series A-4 preferred OP unit	0.4444	13,765	6,116	9,000	3,996
Series A-4 preferred stock	0.4444	22,576	10,033	158,036	70,238
Series C preferred OP unit	1.11	1,919	2,130	16,806	18,651

Cash Distributions

Cash Distributions for the three months ended September 30, 2018 were as follows:

Cash Distributions	Record Date	Payment Date	Distribution per Share		Total Distribution (thousands)
Common Stock, Common OP units and Restricted Stock	9/28/2018	10/15/2018	$	0.71	$	63,250
Series A-4 Preferred Stock	9/14/2018	10/1/2018	$	0.40625	$	432

Redemptions

If certain change of control transactions occur or if our common stock ceases to be listed or quoted on an exchange or quotation system, then at any time after November 26, 2019, we or the holders of shares of Series A-4 preferred stock and Series A-4 preferred OP units may cause all or any of those shares or units to be redeemed for cash at a redemption price equal to the sum of (i) the greater of (x) the amount that the redeemed shares of Series A-4 preferred stock and Series A-4 preferred OP units would have received in such transaction if they had been converted into shares of our common stock immediately prior to such transaction, or (y) $25.00 per share, plus (ii) any accrued and unpaid distributions thereon to, but not including, the redemption date.

In November 2017, we redeemed all of the outstanding shares of our 7.125% Series A Cumulative Redeemable Preferred Stock. Holders received a cash payment of $25.14349 per share which included accrued and unpaid dividends. In the aggregate, we paid $85.5 million to redeem all of the 3,400,000 outstanding shares.

In June 2017, we redeemed 438,448 shares of Series A-4 Preferred Stock and 200,000 shares of Series A-4 preferred OP units from Green Courte Real Estate Partners III, LLC, GCP Fund III REIT LLC and GCP Fund III Ancillary Holding, LLC (collectively, the “Green Courte Entities”) for total consideration of $24.7 million. Accrued dividends totaling $0.2 million were also paid in connection with the redemptions. The Green Courte Entities were the sellers of the American Land Lease portfolio which we acquired in 2014 and 2015.

Repurchase Program

In November 2004, our Board of Directors authorized us to repurchase up to 1,000,000 shares of our common stock. We have 400,000 common shares remaining in the repurchase program as of September 30, 2018. No common shares were repurchased during the nine months ended September 30, 2018 or 2017. There is no expiration date specified for the buyback program.

11.      Share-Based Compensation

As of September 30, 2018, we had two share-based compensation plans; the Sun Communities, Inc. 2015 Equity Incentive Plan (“2015 Equity Incentive Plan”) and the First Amended and Restated 2004 Non-Employee Director Option Plan (“2004 Non-Employee Director Option Plan”). We believe granting equity awards will provide certain executives, key employees and directors additional incentives to promote our financial success, and promote employee and director retention by providing an opportunity to acquire or increase the direct proprietary interest of those individuals in our operations and future.

The following table shows details on grants of equity awards during the nine months ended September 30, 2018:

Grant Period	Type	Plan	Shares Granted	Grant Date Fair Value Per Share			Vesting Type	Vesting Anniversary	Percentage
2018	Key Employees	2015 Equity Incentive Plan	16,500	$	88.30	(1)	Time Based	2nd	35.0	%
								3rd	35.0	%
								4th	20.0	%
								5th	5.0	%
								6th	5.0	%
2018	Key Employees	2015 Equity Incentive Plan	47,600	$	86.22	(1)	Time Based	20.0% annually over 5 years
2018	Executive Officers	2015 Equity Incentive Plan	60,000	$	87.24	(2)	Time Based	20.0% annually over 5 years
2018	Executive Officers	2015 Equity Incentive Plan	90,000	$	65.24	(3)	Market Condition	3rd	100.0	%
2018	Directors	2004 Non-Employee Director Option Plan	16,800	$	85.28	(2)	Time Based	3rd	100.0	%

⁽¹⁾ The fair value of the grants were determined by using the average closing price of our common stock on the dates the shares were issued.

⁽²⁾ The fair value of the grants were determined by using the closing price of our common stock on the dates the shares were issued.

⁽³⁾ Share-based compensation for restricted stock awards with market conditions is measured based on an estimate of shares expected to vest. We estimate the fair value of share-based compensation for restricted stock with market conditions using a Monte Carlo simulation. At the grant date ,our common stock price was $87.24. Based on the Monte Carlo simulation we expect 74.8% of the 90,000 shares to vest.

Vesting

The vesting requirements for 202,368 restricted shares granted to our executives, directors and employees were satisfied during the nine months ended September 30, 2018.

12. Segment Reporting

We group our operating segments into reportable segments that provide similar products and services. Each operating segment has discrete financial information evaluated regularly by our chief operating decision maker in evaluating and assessing performance. We have two reportable segments: (i) Real Property Operations and (ii) Home Sales and Rentals. The Real Property Operations segment owns, operates, develops, or has an interest in a portfolio of MH and RV communities, and is in the business of acquiring, operating, and expanding MH and RV communities. The Home Sales and Rentals segment offers MH and RV park model sales and leasing services to tenants and prospective tenants of our communities.

Transactions between our segments are eliminated in consolidation. Transient RV revenue is included in the Real Property Operations segment revenues and is expected to approximate $107.6 million annually. Transient RV revenue was recognized 20.4 percent, 20.1 percent, and 42.0 percent in the first, second, and third quarters, respectively, and is expected to be 17.5 percent in

19

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

the fourth quarter. Transient revenue was $78.0 million for the year ended December 31, 2017. We recognized 27.2 percent in the first quarter, 20.1 percent in the second quarter, 36.9 percent in the third quarter, and 15.8 percent in the fourth quarter.

A presentation of segment financial information is summarized as follows (in thousands):

	Three Months Ended September 30, 2018									Three Months Ended September 30, 2017
	Real Property Operations			Home Sales and Rentals			Consolidated			Real Property Operations			Home Sales and Rentals			Consolidated
Revenues	$	257,215		$	59,720		$	316,935		$	215,280		$	45,954		$	261,234
Operating expenses/Cost of sales	101,258			39,831			141,089			82,388			31,869			114,257
Net operating income/Gross profit	155,957			19,889			175,846			132,892			14,085			146,977
Adjustments to arrive at net income / (loss):
Interest and other revenues, net	6,603			—			6,603			7,011			—			7,011
Home selling expenses	—			(4,043		)	(4,043		)	—			(3,290		)	(3,290		)
General and administrative	(17,187		)	(2,940		)	(20,127		)	(15,677		)	(2,497		)	(18,174		)
Transaction costs	(24		)	—			(24		)	(2,153		)	(14		)	(2,167		)
Depreciation and amortization	(54,305		)	(17,677		)	(71,982		)	(48,624		)	(15,608		)	(64,232		)
Loss on extinguishment of debt	(939		)	—			(939		)	—			—			—
Interest	(33,516		)	(5		)	(33,521		)	(32,082		)	(3		)	(32,085		)
Interest on mandatorily redeemable preferred OP units / equity	(1,142		)	—			(1,142		)	(790		)	—			(790		)
Catastrophic weather related charges, net	(173		)	—			(173		)	(7,718		)	(38		)	(7,756		)
Other income, net	1,230			1			1,231			3,345			—			3,345
Current tax (expense) / benefit	(135		)	(78		)	(213		)	210			(172		)	38
Deferred tax benefit	199			—			199			81			—			81
Net income / (loss)	56,568			(4,853		)	51,715			36,495			(7,537		)	28,958
Less:  Preferred return to preferred OP units	1,152			—			1,152			1,112			—			1,112
Less:  Amounts attributable to noncontrolling interests	4,304			(233		)	4,071			2,169			(393		)	1,776
Net income / (loss) attributable to Sun Communities, Inc.	51,112			(4,620		)	46,492			33,214			(7,144		)	26,070
Less: Preferred stock distributions	432			—			432			1,955			—			1,955
Net income / (loss) attributable to Sun Communities, Inc. common stockholders	$	50,680		$	(4,620	)	$	46,060		$	31,259		$	(7,144	)	$	24,115

20

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	Nine Months Ended September 30, 2018									Nine Months Ended September 30, 2017
	Real Property Operations			Home Sales and Rentals			Consolidated			Real Property Operations			Home Sales and Rentals			Consolidated
Revenues	$	671,695		$	162,205		$	833,900		592,864			129,093			$	721,957
Operating expenses/Cost of sales	253,009			107,772			360,781			221,178			84,820			305,998
Net operating income/Gross profit	418,686			54,433			473,119			371,686			44,273			415,959
Adjustments to arrive at net income / (loss):
Interest and other revenues, net	18,980			—			18,980			18,587			—			18,587
Home selling expenses	—			(11,319		)	(11,319		)	—			(9,391		)	(9,391		)
General and administrative	(52,966		)	(8,466		)	(61,432		)	(49,082		)	(6,830		)	(55,912		)
Transaction costs	(138		)	—			(138		)	(7,001		)	11			(6,990		)
Depreciation and amortization	(155,624		)	(50,568		)	(206,192		)	(144,143		)	(45,576		)	(189,719		)
Loss on extinguishment of debt	(2,657		)	—			(2,657		)	(759		)	—			(759		)
Interest	(96,904		)	(15		)	(96,919		)	(95,754		)	(11		)	(95,765		)
Interest on mandatorily redeemable preferred OP units / equity	(2,551		)	—			(2,551		)	(2,361		)	—			(2,361		)
Catastrophic weather related charges, net	2,206			(219		)	1,987			(8,075		)	(49		)	(8,124		)
Other (expense) / income, net	(3,215		)	1			(3,214		)	5,341			(1		)	5,340
Current tax (expense) / income	(366		)	(246		)	(612		)	145			(278		)	(133		)
Deferred tax benefit	434			—			434			745			—			745
Net income / (loss)	125,885			(16,399		)	109,486			89,329			(17,852		)	71,477
Less:  Preferred return to preferred OP units	3,335			—			3,335			3,482			—			3,482
Less:  Amounts attributable to noncontrolling interests	9,204			(812		)	8,392			5,148			(969		)	4,179
Net income / (loss) attributable to Sun Communities, Inc.	113,346			(15,587		)	97,759			80,699			(16,883		)	63,816
Less: Preferred stock distributions	1,305			—			1,305			6,233			—			6,233
Net income / (loss) attributable to Sun Communities, Inc. common stockholders	$	112,041		$	(15,587	)	$	96,454		$	74,466		$	(16,883	)	$	57,583

	September 30, 2018						December 31, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations			Home Sales and Rentals		Consolidated
Identifiable assets:
Investment property, net	$	5,534,397	$	519,580	$	6,053,977	$	5,172,521		$	472,833	$	5,645,354
Cash and cash equivalents	86,857		26,699		113,556		(7,649		)	17,776		10,127
Inventory of manufactured homes	—		41,030		41,030		—			30,430		30,430
Notes and other receivables, net	149,564		18,134		167,698		149,798			13,698		163,496
Collateralized receivables, net	112,228		—		112,228		128,246			—		128,246
Other assets, net	138,451		26,786		165,237		130,455			3,849		134,304
Total assets	$	6,021,497	$	632,229	$	6,653,726	$	5,573,371		$	538,586	$	6,111,957

21

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

13.    Income Taxes

We have elected to be taxed as a real estate investment trust (“REIT”) pursuant to Section 856(c) of the Internal Revenue Code of 1986, as amended (“Code”). In order for us to qualify as a REIT, at least 95 percent of our gross income in any year must be derived from qualifying sources. In addition, a REIT must distribute annually at least 90 percent of its REIT taxable income (calculated without any deduction for dividends paid and excluding capital gain) to its stockholders and meet other tests.

Qualification as a REIT involves the satisfaction of numerous requirements (on an annual and quarterly basis) established under highly technical and complex Code provisions for which there are limited judicial or administrative interpretations, and involves the determination of various factual matters and circumstances not entirely within our control. In addition, frequent changes occur in the area of REIT taxation which requires us to continually monitor our tax status. We analyzed the various REIT tests and confirmed that we continued to qualify as a REIT for the quarter ended September 30, 2018.

As a REIT, we generally will not be subject to United States (“U.S.”) federal income taxes at the corporate level on the ordinary taxable income we distribute to our stockholders as dividends. If we fail to qualify as a REIT in any taxable year, our taxable income could be subject to U.S. federal income tax at regular corporate rates (including any applicable alternative minimum tax). Even if we qualify as a REIT, we may be subject to certain state and local income taxes as well as U.S. federal income and excise taxes on our undistributed income. In addition, taxable income from non-REIT activities managed through taxable REIT subsidiaries is subject to federal, state, and local income taxes. The Company is also subject to local income taxes in Canada as a result of the acquisition of Carefree in 2016. We do not provide for withholding taxes on our undistributed earnings from our Canadian subsidiaries as they are reinvested and will continue to be reinvested indefinitely outside of the U.S.

Our taxable REIT subsidiaries are subject to U.S. federal income taxes as well as state and local income and franchise taxes. In addition, our Canadian subsidiaries are subject to income tax in Canada.

Deferred tax assets and liabilities reflect the impact of temporary differences between the amounts of assets and liabilities for financial reporting purposes and the bases of such assets and liabilities as measured by tax laws. Deferred tax assets are reduced, if necessary, by a valuation allowance to the amount where realization is more likely than not assured after considering all available evidence. Our temporary differences primarily relate to net operating loss carryforwards, depreciation and basis differences between tax and U.S. GAAP on our Canadian investments. Generally, full valuation allowances are recorded against almost all U.S. federal deferred tax assets. Deferred tax liabilities of $21.3 million for Canadian entities have been recorded in relation to corporate entities and included in “Other liabilities” in our Consolidated Balance Sheets as of September 30, 2018. There are no U.S. federal deferred tax assets or liabilities included in our Consolidated Balance sheets as of September 30, 2018 and December 31, 2017.

Our deferred tax assets that have a full valuation allowance relate to our taxable REIT subsidiary (“TRS”) business which has historically produced losses. While at this time, we have evidence that our TRS business may shift to profitability, we have not achieved a sustained historical profitability that would, in our judgment, support a release of the full valuation allowance at September 30, 2018.

We had no unrecognized tax benefits as of September 30, 2018 and 2017. We do not expect significant changes in tax positions that would result in unrecognized tax benefits within one year of September 30, 2018.

We recorded a current tax expense for federal, state, and Canadian income taxes of $0.2 million for the three months ended September 30, 2018 and a current tax benefit of approximately $0.1 million for the three months ended September 30, 2017. For the nine months ended September 30, 2018 and 2017, we recorded a current tax expense of $0.6 million and $0.1 million, respectively.

For the three months ended September 30, 2018 and 2017, we recorded a deferred tax benefit of $0.2 million and $0.1 million, respectively. For the nine months ended September 30, 2018 and 2017, we recorded a deferred tax benefit of $0.4 million and $0.7 million, respectively.

In 2017, SHS underwent an audit by the Internal Revenue Service for the 2015 tax year. Upon conclusion of the audit in 2018, no adjustment was required.

22

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

14.    Earnings Per Share

We have outstanding stock options, unvested restricted common shares, and Series A-4 Preferred Stock, and our Operating Partnership has: outstanding common OP units; Series A-1 preferred OP units; Series A-3 preferred OP units; Series A-4 preferred OP units; Series C preferred OP units; and Aspen preferred OP Units, which, if converted or exercised, may impact dilution.

Computations of basic and diluted earnings per share were as follows (in thousands, except per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
Numerator	2018			2017			2018			2017
Net income attributable to common stockholders	$	46,060		$	24,115		$	96,454		$	57,583
Allocation to restricted stock awards	(396		)	(189		)	(830		)	(461		)
Basic earnings: Net income attributable to common stockholders after allocation	45,664			23,926			95,624			57,122
Allocation to restricted stock awards	396			189			—			461
Diluted earnings: Net income attributable to common stockholders after allocation	$	46,060		$	24,115		$	95,624		$	57,583
Denominator
Weighted average common shares outstanding	81,599			78,369			80,022			75,234
Add: dilutive stock options	2			2			2			2
Add: dilutive restricted stock	480			437			—			610
Diluted weighted average common shares and securities	82,081			78,808			80,024			75,846
Earnings per share available to common stockholders after allocation:
Basic	$	0.56		$	0.31		$	1.19		$	0.76
Diluted	$	0.56		$	0.31		$	1.19		$	0.76

We have excluded certain convertible securities from the computation of diluted earnings per share because the inclusion of these securities would have been anti-dilutive for the periods presented. The following table presents the outstanding securities that were excluded from the computation of diluted earnings per share as of September 30, 2018 and 2017 (in thousands):

	As of September 30,
	2018	2017
Common OP units	2,729	2,757
Series A-1 preferred OP units	332	349
Series A-3 preferred OP units	40	40
Series A-4 preferred OP units	410	425
Series A-4 preferred stock	1,063	1,085
Series C preferred OP units	314	316
Aspen preferred OP units	1,284	1,284
Total securities	6,172	6,256

23

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

15.    Fair Value of Financial Instruments

Our financial instruments consist primarily of cash and cash equivalents, accounts and notes receivable, accounts payable, derivative instruments, and debt.

ASC Topic 820 “Fair Value Measurements and Disclosures,” requires disclosure regarding determination of fair value for assets and liabilities and establishes a hierarchy under which these assets and liabilities must be grouped, based on significant levels of observable or unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumption. This hierarchy requires the use of observable market data when available. These two types of inputs have created the following fair value hierarchy:

Level 1—Quoted unadjusted prices for identical instruments in active markets;

Level 2—Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and

Level 3—Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.

We utilize fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The following methods and assumptions were used in order to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

Installment Notes Receivable on Manufactured Homes

The net carrying value of the installment notes receivable on manufactured homes estimates the fair value as the interest rates in the portfolio are comparable to current prevailing market rates (Level 2). Refer to Note 5, “Notes and Other Receivables.”

Long-Term Debt and Lines of Credit

The fair value of long-term debt (excluding the secured borrowing) is based on the estimates of management and on rates currently quoted, rates currently prevailing for comparable loans, and instruments of comparable maturities (Level 2). Refer to Note 9, “Debt and Lines of Credit.”

Collateralized Receivables and Secured Borrowings

The fair value of these financial instruments offset each other as our collateralized receivables represent a transfer of financial assets and the cash proceeds received from these transactions have been classified as a secured borrowing on the Consolidated Balance Sheets. The net carrying value of the collateralized receivables estimates the fair value as the interest rates in the portfolio are comparable to current prevailing market rates (Level 2). Refer to Note 4, “Collateralized Receivables and Transfers of Financial Assets.”

Financial Liabilities

We estimate the fair value of our contingent consideration liability based on discounting of future cash flows using market interest rates and adjusting for non-performance risk over the remaining term of the liability (Level 2).

Other Financial Instruments

The carrying values of cash and cash equivalents, accounts receivable, and accounts payable approximate their fair market values due to the short-term nature of these instruments.

24

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The table below sets forth our financial assets and liabilities that required disclosure of fair value on a recurring basis as of September 30, 2018. The table presents the carrying values and fair values of our financial instruments as of September 30, 2018 and December 31, 2017, that were measured using the valuation techniques described above (in thousands). The table excludes other financial instruments such as cash and cash equivalents, accounts receivable, and accounts payable as the carrying values associated with these instruments approximate fair value since their maturities are less than one year.

	September 30, 2018				December 31, 2017
Financial assets	Carrying Value		Fair Value		Carrying Value		Fair Value
Installment notes receivable on manufactured homes, net	$	117,583	$	117,583	$	115,797	$	115,797
Collateralized receivables, net	$	112,228	$	112,228	$	128,246	$	128,246
Financial liabilities
Debt (excluding secured borrowings)	$	2,891,840	$	2,798,537	$	2,908,799	$	2,726,770
Secured borrowings	$	113,089	$	113,089	$	129,182	$	129,182
Lines of credit	$	—	$	—	$	41,257	$	41,257
Other liabilities (contingent consideration)	$	7,261	$	7,261	$	6,976	$	6,976

16.    Recent Accounting Pronouncements

Recent Accounting Pronouncements - Adopted

On January 1, 2018, we adopted ASU 2014-09 “Revenue from Contracts with Customers (Topic 606).” Refer to Note 2, “Revenue” for information regarding our adoption of this guidance.

On January 1, 2018 we adopted ASU 2017-09 “Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting.” This update provided clarity and reduced both diversity in practice and cost and complexity when applying the guidance in Topic 718, Compensation - Stock Compensation, regarding a change to the terms or conditions of a share-based payment award. There was no initial impact that resulted from adoption of this guidance; it will be applied should a modification occur.

On January 1, 2018, we adopted ASU 2017-01 “Business Combinations (Topic 805): Clarifying the Definition of a Business.” This update clarified the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill, and consolidation.

Under previous guidance, substantially all of our property acquisitions were accounted for as business combinations with identifiable assets and liabilities measured at fair value, and acquisition related costs expensed as incurred.

With the adoption of ASU 2017-01, we expect that substantially all of our future property acquisitions will be accounted for as asset acquisitions. We allocate the purchase price of these properties on a relative fair value basis and capitalize direct acquisition related costs as part of the purchase price. Acquisitions costs that do not meet the criteria to be capitalized will be expensed as incurred and presented as General and administrative costs in our Consolidated Statements of Operations.

On January 1, 2018, we adopted ASU 2016-18 “Statement of Cash Flows (Topic 230): Restricted Cash.” This update required inclusion of restricted cash and restricted cash equivalents with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows.

Our restricted cash consists of amounts primarily held in deposit for tax, insurance and repair escrows held by lenders in accordance with certain debt agreements. Restricted cash is included as a component of Other assets, net on the Consolidated Balance Sheets. Changes in restricted cash are reported in our Consolidated Statements of Cash Flows as operating, investing or financing activities based on the nature of the underlying activity.

The following table reconciles our beginning-of-period and end-of-period balances of cash, cash equivalents and restricted cash for the periods shown (in thousands):

25

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	September 30, 2018		December 31, 2017		September 30, 2017		December 31, 2016
Cash and cash equivalents	$	113,556	$	10,127	$	137,448	$	8,164
Restricted cash	15,538		13,382		19,943		17,149
Cash, cash equivalents and restricted cash	$	129,094	$	23,509	$	157,391	$	25,313

Recent Accounting Pronouncements - Not Yet Adopted

In June 2016, the FASB issued ASU 2016-13 “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This update replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We are in the initial phases of evaluating how this guidance will impact our accounting policies regarding assessment of, and allowance for, loan losses.

In February 2016, the FASB issued ASU 2016-02 “Leases (Topic 842).” The core principle of this update is that a lessee should recognize the right of use (“ROU”) assets and liabilities in the Consolidated Balance Sheet that arise from lease agreements. The ROU asset represents our right to use an underlying asset for the term of the lease and the lease liability represents our obligation to make lease payments arising for the agreements. The accounting by a lessor is largely unchanged from that applied under previous GAAP. This update also requires significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. The amendments in this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We will adopt the amendment in the first quarter 2019 using the prospective approach. Our income from real property and rental home revenue streams is derived from rental agreements where we are the lessor. The new accounting standard narrowed the definition of initial direct costs which can be capitalized. The new standard defines initial direct costs as the incremental costs of signing a lease. Employee salaries, legal fees rendered prior to the execution of a lease, negotiation costs, advertising and other origination effort costs no longer meet the definition of initial direct costs. These costs will now be included in general and administrative costs in our Consolidated Statement of Operations. We are currently assessing the impact of our measurement of initial direct costs under the new standard definition. We are the lessee in other arrangements, primarily for our executive offices, ground leases at certain communities and certain equipment. For leases with a term greater than one year, a right of use asset and corresponding ROU liability are to be included on the Consolidated Balance Sheet. The ROU asset and liability is measured as the estimated present value of minimum lease payments at the commencement of the lease agreement and discounted by our incremental borrowing rate of a collateralized term loan. For existing leases the ROU asset and ROU liability will be measured at the remaining present value of the lease payments. The lease liability is amortized over the straight line method over the term of the lease agreement. Extension options on ROU assets are included if the option is reasonably certain to be exercised. Operating leases with a term of less than one year are recognized as a lease expense over the term of the lease, no asset or liability is recognized on the Consolidated Balance Sheet. Variable lease payments are excluded from the ROU asset and liability on the Consolidated Balance Sheet and are recognized in the period in which the obligation payment occurred and recognized as variable lease obligation payments on the Consolidated Statement of Operations. We are currently evaluating our inventory of such leases to determine which will require recognition of right of use assets, corresponding lease liabilities, and the related disclosure requirements thereto. We will elect certain practical expedients allowable by the ASU, including the expedient to forego separation of lease and non-lease component of lessee contracts, resulting in a gross-up effect on the balance sheet assets and liabilities. Additionally for all leases, we will elect the package of practical expedients, which permits the Company not to reassess expired or existing contracts containing a lease, the lease classification for expired or existing contracts, and measurement of initial direct costs for any existing leases.

In August 2018, the FASB issued ASU 2018-15 “Intangibles- Goodwill and Other- Internal-Use Software (Topic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract.” This update aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal use software. The amendments in this update are effective for fiscal years beginning after December 15, 2020. Early adoption of the amendments in this update is permitted, including adoption in any interim period, for all entities. We are currently evaluating the potential impact of adoption of this standard on our consolidated financial statements.

17.   Commitments and Contingencies

Legal Proceedings

We are involved in various legal proceedings arising in the ordinary course of business. All such proceedings, taken together, are not expected to have a material adverse impact on our results of operations or financial condition.

Catastrophic Weather Related Estimates

In September 2017, our communities in Florida and Georgia sustained damages from Hurricane Irma. The table below sets forth estimated losses (in millions). Future changes to estimated losses will be recognized in the period(s) in which they are determined.

We maintain property, casualty, flood and business interruption insurance for our community portfolio, subject to customary deductibles and limits. The table below sets forth estimated insurance recoveries (in millions). Actual insurance recoveries could vary significantly from our estimates. Future changes to estimated insurance recoveries will be recognized in the period(s) in which they are determined.

	Nine Months Ended September 30, 2018
Total estimated insurance receivable - December 31, 2017	$	23.7
Change in estimated insurance recoveries	8.9
Advances from insurer	(16.4		)
Total estimated insurance receivable - September 30, 2018	$	16.2

Changes in estimated insurance recoveries for damages during the nine months ended September 30, 2018, were primarily the result of incremental invoices for which the total costs exceeded the applicable deductible. The change in estimated losses and changes in estimated insurance recoveries during the three and nine months ended September 30, 2018, resulted in a net loss of $0.2 million and a net gain of $2.0 million, respectively to Catastrophic weather related charges, net in our Consolidated Statements of Operations.

We are actively working with our insurer on claims for lost earnings and redevelopment costs greater than the asset impairment charge for the three Florida Keys communities. The three impaired Florida Keys communities will require redevelopment followed

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SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

by a tenant lease-up period. As such, we currently cannot estimate a date when operating results will be restored to pre-hurricane levels. Our business interruption insurance policy provides for up to 60 months of coverage from the date of restoration.

18.   Subsequent Events

In October 2018, we acquired a parcel of land in Austin, Texas for $4.2 million. The land parcel is an expansion for 220 MH development sites to our Oak Crest community.

We have evaluated our Consolidated Financial Statements for subsequent events through the date that this Form 10-Q was issued.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of the consolidated financial condition and results of operations should be read in conjunction with the Consolidated Financial Statements and Notes filed herewith, along with our 2017 Annual Report. Capitalized terms are used as defined elsewhere in this Quarterly Report on Form 10-Q.

OVERVIEW

We are a fully integrated, self-administered and self-managed REIT. As of September 30, 2018, we owned and operated or held an interest in a portfolio of 370 developed properties located in 31 states throughout the U.S. and one province in Canada, including 230 MH communities, 109 RV communities, and 31 properties containing both MH and RV sites.

We have been in the business of acquiring, operating, developing, and expanding MH and RV communities since 1975. We lease individual sites with utility access for placement of manufactured homes and RVs to our customers. We are also engaged through SHS in the marketing, selling, and leasing of new and pre-owned homes to current and future residents in our communities. The operations of SHS support and enhance our occupancy levels, property performance, and cash flows.

SIGNIFICANT ACCOUNTING POLICIES

We have identified significant accounting policies that, as a result of the judgments, uncertainties, and complexities of the underlying accounting standards and operations involved could result in material changes to our financial condition or results of operations under different conditions or using different assumptions. Details regarding significant accounting policies are described fully in our 2017 Annual Report.

NON-GAAP FINANCIAL MEASURES

In addition to the results reported in accordance with GAAP in our “Results of Operations” below, we have provided information regarding net operating income (“NOI”) and funds from operations (“FFO”) as supplemental performance measures. We believe NOI and FFO are appropriate measures given their wide use by and relevance to investors and analysts following the real estate industry. NOI provides a measure of rental operations and does not factor in depreciation, amortization and non-property specific expenses such as general and administrative expenses. FFO, reflecting the assumption that real estate values rise or fall with market conditions, principally adjusts for the effects of GAAP depreciation/amortization of real estate assets. In addition, NOI and FFO are commonly used in various ratios, pricing multiples/yields and returns and valuation calculations used to measure financial position, performance and value.

NOI is derived from revenues minus property operating expenses and real estate taxes. NOI is a non-GAAP financial measure that we believe is helpful to investors as a supplemental measure of operating performance because it is an indicator of the return on property investment, and provides a method of comparing property performance over time. We use NOI as a key measure when evaluating performance and growth of particular properties and/or groups of properties. The principal limitation of NOI is that it excludes depreciation, amortization, interest expense and non-property specific expenses such as general and administrative expenses, all of which are significant costs. Therefore, NOI is a measure of the operating performance of our properties rather than of the Company overall.

We believe that GAAP net income (loss) is the most directly comparable measure to NOI. NOI should not be considered to be an alternative to GAAP net income (loss) as an indication of our financial performance or GAAP cash flow from operating activities as a measure of our liquidity; nor is it indicative of funds available for our cash needs, including our ability to make cash distributions. Because of the inclusion of items such as interest, depreciation, and amortization, the use of GAAP net income (loss) as a performance measure is limited as these items may not accurately reflect the actual change in market value of a property, in the case of depreciation and in the case of interest, may not necessarily be linked to the operating performance of a real estate asset, as it is often incurred at a parent company level and not at a property level.

FFO is defined by the National Association of Real Estate Investment Trusts (“NAREIT”) as GAAP net income (loss), excluding gains (or losses) from sales of depreciable operating property, plus real estate-related depreciation and amortization, and after adjustments for unconsolidated partnerships and joint ventures. FFO is a non-GAAP financial measure that management believes is a useful supplemental measure of our operating performance. By excluding gains and losses related to sales of previously depreciated operating real estate assets, impairment and excluding real estate asset depreciation and amortization (which can vary among owners of identical assets in similar condition based on historical cost accounting and useful life estimates), FFO provides

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a performance measure that, when compared period-over-period, reflects the impact to operations from trends in occupancy rates, rental rates, and operating costs, providing perspective not readily apparent from GAAP net income (loss). Management believes the use of FFO has been beneficial in improving the understanding of operating results of REITs among the investing public and making comparisons of REIT operating results more meaningful. We also use FFO excluding certain gain and loss items that management considers unrelated to the operational and financial performance of our core business (“Core FFO”). We believe that Core FFO provides enhanced comparability for investor evaluations of period-over-period results.

We believe that GAAP net income (loss) is the most directly comparable measure to FFO. The principal limitation of FFO is that it does not replace GAAP net income (loss) as a performance measure or GAAP cash flow from operations as a liquidity measure. Because FFO excludes significant economic components of GAAP net income (loss) including depreciation and amortization, FFO should be used as a supplement to GAAP net income (loss) and not as an alternative to it. Further, FFO is not intended as a measure of a REIT’s ability to meet debt principal repayments and other cash requirements, nor as a measure of working capital. FFO is calculated in accordance with our interpretation of standards established by NAREIT, which may not be comparable to FFO reported by other REITs that interpret the NAREIT definition differently.

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RESULTS OF OPERATIONS

We report operating results under two segments: Real Property Operations and Home Sales and Rentals. The Real Property Operations segment owns, operates, develops, or has an interest in, a portfolio of MH and RV communities throughout the U.S. and in Canada, and is in the business of acquiring, operating, and expanding MH and RV communities. The Home Sales and Rentals segment offers MH and RV park model sales and leasing services to tenants and prospective tenants of our communities. We evaluate segment operating performance based on NOI and gross profit. Refer to Note 12, “Segment Reporting,” in our accompanying Consolidated Financial Statements for additional information.

COMPARISON OF THE THREE MONTHS ENDED SEPTEMBER 30, 2018 AND 2017

SUMMARY STATEMENTS OF OPERATIONS

The following table summarizes our consolidated financial results and reconciles net income to NOI for the three months ended September 30, 2018 and 2017 (in thousands):

	Three Months Ended September 30,
	2018			2017
Net income attributable to Sun Communities, Inc., common stockholders:	$	46,060		$	24,115
Other revenues	(6,603		)	(7,011		)
Home selling expenses	4,043			3,290
General and administrative	20,127			18,174
Transaction costs	24			2,167
Depreciation and amortization	71,982			64,232
Interest expense	34,663			32,875
Loss on extinguishment of debt	939			—
Catastrophic weather related charges, net	173			7,756
Other income, net	(1,231		)	(3,345		)
Current tax expense / (benefit)	213			(38		)
Deferred tax benefit	(199		)	(81		)
Preferred return to preferred OP units / equity	1,152			1,112
Amounts attributable to noncontrolling interests	4,071			1,776
Preferred stock distribution	432			1,955
NOI / Gross profit	$	175,846		$	146,977

	Three Months Ended September 30,
	2018			2017
Real Property NOI	$	143,710		$	125,961
Rental Program NOI	23,847			22,060
Home Sales NOI / Gross profit	12,439			8,103
Ancillary NOI / Gross profit	12,247			6,931
Site rent from Rental Program (included in Real Property NOI) (1)	(16,397		)	(16,078		)
NOI / Gross profit	$	175,846		$	146,977

⁽¹⁾   The renter’s monthly payment includes the site rent and an amount attributable to the leasing of the home. The site rent is reflected in the Real Property Operations segment. For purposes of management analysis, the site rent is included in the Rental Program revenue to evaluate the incremental revenue gains associated with implementation of the Rental Program, and to assess the overall growth and performance of Rental Program and financial impact on our operations.

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REAL PROPERTY OPERATIONS – TOTAL PORTFOLIO

The following tables reflect certain financial and other information for our Total Portfolio as of and for the three months ended September 30, 2018 and 2017:

	Three Months Ended September 30,
Financial Information (in thousands)	2018		2017		Change		% Change
Income from real property	$	229,607	$	198,263	$	31,344	15.8	%
Property operating expenses:
Payroll and benefits	22,189		19,168		3,021		15.8	%
Legal, taxes, and insurance	2,743		1,921		822		42.8	%
Utilities	27,204		23,765		3,439		14.5	%
Supplies and repair	9,283		7,701		1,582		20.5	%
Other	9,945		6,694		3,251		48.6	%
Real estate taxes	14,533		13,053		1,480		11.3	%
Property operating expenses	85,897		72,302		13,595		18.8	%
Real Property NOI	$	143,710	$	125,961	$	17,749	14.1	%

	As of September 30,
Other Information	2018			2017			Change
Number of properties	370			348			22
MH occupancy	94.9		%
RV occupancy	100.0		%
MH & RV blended occupancy (1)	96.1		%	96.2		%	(0.1		)%
Sites available for development	11,315			10,389			926
Monthly base rent per site - MH	$	551		$	530		$	21
Monthly base rent per site - RV (2)	$	448		$	429		$	19
Monthly base rent per site - Total	$	527		$	508		$	19

⁽¹⁾    Overall occupancy percentage includes MH and annual RV sites, and excludes transient RV sites.

⁽²⁾  Monthly base rent pertains to annual RV sites and excludes transient RV sites.

The $17.7 million increase in Real Property NOI consists of $7.7 million from Same Communities as detailed below and $10.0 million from acquired properties.

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REAL PROPERTY OPERATIONS – SAME COMMUNITIES

A key management tool used when evaluating performance and growth of our properties is a comparison of our Same Communities. Same Communities consist of stabilized properties owned and operated since January 1, 2017. The Same Community data may change from time-to-time depending on acquisitions, dispositions, management discretion, significant transactions, or unique situations.

In order to evaluate the growth of the Same Communities, management has classified certain items differently than our GAAP statements, primarily the reclassification of water and sewer revenues from Income from real property to Utilities. A significant portion of our utility charges are re-billed to our residents. We have reclassified $8.4 million and $7.9 million for the three months ended September 30, 2018 and 2017, respectively, to reflect the utility expenses associated with our Same Community portfolio net of recovery.

The following tables reflect certain financial and other information for our Same Communities as of and for the three months ended September 30, 2018 and 2017. The amounts in the table below reflect constant currency for comparative purposes. Canadian currency figures included within the three months ended September 30, 2017 have been translated at 2018 exchange rates:

	Three Months Ended September 30,
Financial Information (in thousands)	2018		2017		Change		% Change
Income from real property	$	198,883	$	187,056	$	11,827	6.3	%
Property operating expenses:
Payroll and benefits	18,662		18,595		67		0.4	%
Legal, taxes, and insurance	2,546		1,882		664		35.3	%
Utilities	16,274		15,396		878		5.7	%
Supplies and repair	8,370		7,408		962		13.0	%
Other	6,869		6,217		652		10.5	%
Real estate taxes	13,761		12,862		899		7.0	%
Property operating expenses	66,482		62,360		4,122		6.6	%
Real Property NOI	$	132,401	$	124,696	$	7,705	6.2	%

	As of September 30,
Other Information	2018			2017			Change
Number of properties	336			336			—
MH occupancy (1)	97.2		%
RV occupancy (1)	100.0		%
MH & RV blended occupancy (1) (2)	97.8		%	95.6		%	2.2		%
Sites available for development	7,250			6,003			1,247
Monthly base rent per site - MH	$	551		$	530		$	21
Monthly base rent per site - RV (3)	$	447		$	425		$	22
Monthly base rent per site - Total	$	527		$	507		$	20

⁽¹⁾  The occupancy percentage includes MH and annual RV sites, and excludes recently completed but vacant expansion sites and transient RV sites.

⁽²⁾ The occupancy percentage for 2017 has been adjusted to reflect incremental growth period-over-period from filled MH expansion sites and the conversion of transient RV sites to annual RV sites.

⁽³⁾  Monthly base rent pertains to annual RV sites and excludes transient RV sites.

Real property NOI growth of 6.2 percent is primarily due to increased Income from real property of $11.8 million, or 6.3 percent. The 6.3 percent increase is primarily attributable to a 2.2 percent increase in occupancy and a 4.0 percent increase in total monthly base rent per site when compared to the same period in 2017. The increase in Income from real property was partially offset by a $4.1 million, or 6.6 percent, increase in Property operating expenses, primarily attributable to increases in Supplies and repair, Utilities, Real estate taxes, and Legal, taxes, and insurance.

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HOME SALES AND RENTALS

We purchase new homes and acquire pre-owned and repossessed manufactured homes, generally located within our communities, from lenders, dealers, and former residents to sell or lease to current and prospective residents.

The following table reflects certain financial and statistical information for our Home Sales Program for the three months ended September 30, 2018 and 2017 (in thousands, except for average selling prices and statistical information):

	Three Months Ended September 30,
Financial Information	2018			2017			Change			% Change
New home sales	$	16,433		$	10,331		$	6,102		59.1	%
Pre-owned home sales	29,698			22,866			6,832			29.9	%
Revenue from home sales	46,131			33,197			12,934			39.0	%
New home cost of sales	14,278			8,699			5,579			64.1	%
Pre-owned home cost of sales	19,414			16,395			3,019			18.4	%
Cost of home sales	33,692			25,094			8,598			34.3	%
NOI / Gross profit	$	12,439		$	8,103		$	4,336		53.5	%
Gross profit – new homes	$	2,155		$	1,632		$	523		32.0	%
Gross margin % – new homes	13.1		%	15.8		%	(2.7		)%
Average selling price – new homes	$	112,555		$	101,284		$	11,271		11.1	%
Gross profit – pre-owned homes	$	10,284		$	6,471		$	3,813		58.9	%
Gross margin % – pre-owned homes	34.6		%	28.3		%	6.3		%
Average selling price – pre-owned homes	$	35,998		$	32,526		$	3,472		10.7	%
Statistical Information
Home sales volume:
New home sales	146			102			44			43.1	%
Pre-owned home sales	825			703			122			17.4	%
Total homes sold	971			805			166			20.6	%

Gross profit on new home sales increased by $0.5 million in the three months ended September 30, 2018 as compared to the same period in 2017, primarily as a result of increased new home sales volumes partially offset by a lower gross margin percentage on those sales.

Gross profit on pre-owned home sales increased by $3.8 million in the three months ended September 30, 2018 as compared to the same period in 2017, due to increased pre-owned home sales volumes and an increase in gross margin percentage on those sales.

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The following table reflects certain financial and other information for our Rental Program as of and for the three months ended September 30, 2018 and 2017 (in thousands, except for statistical information):

	Three Months Ended September 30,
Financial Information	2018		2017		Change			% Change
Revenues:
Rental home revenue	$	13,589	$	12,757	$	832		6.5	%
Site rent from Rental Program (1)	16,397		16,078		319			2.0	%
Rental Program revenue	29,986		28,835		1,151			4.0	%
Expenses:
Commissions	481		891		(410		)	(46.0	)%
Repairs and refurbishment	2,818		3,306		(488		)	(14.8	)%
Taxes and insurance	1,580		1,546		34			2.2	%
Marketing and other	1,260		1,032		228			22.1	%
Rental Program operating and maintenance	6,139		6,775		(636		)	(9.4	)%
Rental Program NOI	$	23,847	$	22,060	$	1,787		8.1	%
Other Information
Number of occupied rentals, end of period	10,913		10,960		(47		)	(0.4	)%
Investment in occupied rental homes, end of period	$	517,321	$	482,591	$	34,730		7.2	%
Number of sold rental homes	316		286		30			10.5	%
Weighted average monthly rental rate, end of period	$	940	$	895	$	45		5.0	%

⁽¹⁾ The renter’s monthly payment includes the site rent and an amount attributable to rental home lease. The site rent is reflected in the Real Property Operations segment. For purposes of management analysis, the site rent is included in the Rental Program revenue to evaluate the incremental revenue gains associated with implementation of the Rental Program, and assess the overall growth and performance of the Rental Program and financial impact to our operations.

Rental program NOI increased 8.1 percent inclusive of an increase in revenues of 4.0 percent, or $1.2 million, and a decrease in operating and maintenance expenses of 9.4 percent, or $0.6 million. The increase in revenues is primarily attributable to a 5.0 percent increase in the weighted average monthly rental rate. The $0.6 million decrease in operating and maintenance expenses is primarily the result of decreased commissions and repairs and refurbishment expenses, partially offset by an increase in marketing expense in the three months ended September 30, 2018, as compared to the same period in 2017.

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OTHER ITEMS - STATEMENTS OF OPERATIONS

The following table summarizes other income and expenses for the three months ended September 30, 2018 and 2017 (amounts in thousands):

	Three Months Ended September 30,
	2018		2017		Change			% Change
Ancillary revenues, net	$	12,247	$	6,931	$	5,316		76.7	%
Interest income	$	5,256	$	5,920	$	(664	)	(11.2	)%
Brokerage commissions and other revenues, net	$	1,347	$	1,091	$	256		23.5	%
Home selling expenses	$	4,043	$	3,290	$	753		22.9	%
General and administrative expenses	$	20,127	$	18,174	$	1,953		10.7	%
Transaction costs	$	24	$	2,167	$	(2,143	)	(98.9	)%
Depreciation and amortization	$	71,982	$	64,232	$	7,750		12.1	%
Loss on extinguishment of debt	$	939	$	—	$	939		N/A
Interest expense	$	34,663	$	32,875	$	1,788		5.4	%
Catastrophic weather related charges, net	$	173	$	7,756	$	(7,583	)	(97.8	)%
Other income / (expense), net	$	1,231	$	3,345	$	(2,114	)	(63.2	)%

Ancillary revenues, net - increased primarily due to an increase in golf course, restaurant, and resort activity revenues during the three months ended September 30, 2018 as compared to the same period in 2017.

Interest income - for the three months ended September 30, 2018, decreased primarily due to $0.6 million of interest income from the three months ended September 30, 2017, attributable to the May 2017 equity offering.

Homes selling expenses - increased primarily as a result of higher commissions due to a higher volume of new home sales during the three months ended September 30, 2018 as compared to the same period in 2017.

General and administrative expenses - for the three months ended September 30, 2018, increased primarily due to employee related costs including salaries and incentive compensation, as well as increased deferred compensation amortization as compared to the same period in 2017.

Transaction costs - for the three months ended September 30, 2017, were incurred in connection with our property acquisitions, which were accounted for as business combinations with identifiable assets and liabilities measured at fair value and acquisition related costs expensed as incurred. Beginning January 2018, direct acquisition related costs are capitalized as part of the purchase price. Acquisitions costs that do no meet the criteria for capitalization are expensed as incurred. Refer to Note 16, “Recent Accounting Pronouncements” of our accompanying Consolidated Financial Statements for additional information.

Depreciation and amortization - increased as a result of our recent property acquisitions and our ongoing expansion and development activities. Refer to Note 3, “Real Estate Acquisitions” of our accompanying Consolidated Financial Statements for additional information.

Loss on extinguishment of debt - in the three months ended September 30, 2018 is comprised of $0.3 million in connection with defeasement and repayments of a collateralized term loan of $30.5 million and $0.6 million in connection with the term loan that was repaid in full. Refer to Note 9, “Debt and Lines of Credit,” in our accompanying Consolidated Financial Statements for additional information.

Interest Expense - for the three months ended September 30, 2018, increased primarily due to the interest expense on our line of credit as compared to the same period in 2017.

Catastrophic weather related charges, net - In September 2017, Hurricane Irma impacted our communities in Florida and Georgia. During the three months ended September 30, 2018, we recorded a $0.2 million net loss primarily as a result of incremental losses where deductibles were previously not met. Refer to Note 17, “Commitments and Contingencies” of our accompanying Consolidated Financial Statements for additional information.

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Other income / (expense), net - in the three months ended September 30, 2018, was primarily comprised of a foreign currency translation gain of $1.5 million, offset by a contingent liability loss of $0.3 million, as compared to a foreign currency translation gain of $3.4 million partially offset by contingent liability re-measurement of $0.1 million in the same period of 2017.

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COMPARISON OF THE NINE MONTHS ENDED SEPTEMBER 30, 2018 AND 2017

SUMMARY STATEMENTS OF OPERATIONS

The following table summarizes our consolidated financial results and reconciles net income to NOI for the nine months ended September 30, 2018 and 2017 (in thousands):

	Nine Months Ended September 30,
	2018			2017
Net income attributable to Sun Communities, Inc., common stockholders:	$	96,454		$	57,583
Other revenues	(18,980		)	(18,587		)
Home selling expenses	11,319			9,391
General and administrative	61,432			55,912
Transaction costs	138			6,990
Depreciation and amortization	206,192			189,719
Interest expense	99,470			98,126
Loss on extinguishment of debt	2,657			759
Catastrophic weather related charges	(1,987		)	8,124
Other (expense) / income, net	3,214			(5,340		)
Current tax expense	612			133
Deferred tax benefit	(434		)	(745		)
Preferred return to preferred OP units / equity	3,335			3,482
Amounts attributable to noncontrolling interests	8,392			4,179
Preferred stock distribution	1,305			6,233
NOI / Gross profit	$	473,119		$	415,959

	Nine Months Ended September 30,
	2018			2017
Real Property NOI	$	401,464		$	361,595
Rental Program NOI	72,625			68,759
Home Sales NOI / Gross profit	31,053			23,320
Ancillary NOI / Gross profit	17,222			10,091
Site rent from Rental Program (included in Real Property NOI) (1)	(49,245		)	(47,806		)
NOI / Gross profit	$	473,119		$	415,959

⁽¹⁾   The renter’s monthly payment includes the site rent and an amount attributable to the leasing of the home. The site rent is reflected in the Real Property Operations segment. For purposes of management analysis, the site rent is included in the Rental Program revenue to evaluate the incremental revenue gains associated with implementation of the Rental Program, and to assess the overall growth and performance of Rental Program and financial impact on our operations.

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REAL PROPERTY OPERATIONS – TOTAL PORTFOLIO

The following tables reflect certain financial and other information for our Total Portfolio as of and for the nine months ended September 30, 2018 and 2017:

	Nine Months Ended September 30,
Financial Information (in thousands)	2018		2017		Change		% Change
Income from real property	$	625,488	$	560,778	$	64,710	11.5	%
Property operating expenses:
Payroll and benefits	56,412		51,140		5,272		10.3	%
Legal, taxes, and insurance	7,311		5,339		1,972		36.9	%
Utilities	71,363		63,641		7,722		12.1	%
Supplies and repair	22,371		19,712		2,659		13.5	%
Other	24,122		20,029		4,093		20.4	%
Real estate taxes	42,445		39,322		3,123		7.9	%
Property operating expenses	224,024		199,183		24,841		12.5	%
Real Property NOI	$	401,464	$	361,595	$	39,869	11.0	%

The $39.9 million increase in Real Property NOI consists of $22.4 million from Same Communities as detailed below and $17.5 million from acquired properties.

REAL PROPERTY OPERATIONS – SAME COMMUNITIES

The following tables reflect certain financial and other information for our Same Communities as of and for the nine months ended September 30, 2018 and 2017. We have reclassified $24.1 million and $22.9 million for the nine months ended September 30, 2018 and 2017, respectively, to reflect the utility expenses associated with our Same Community portfolio net of recovery. The amounts in the table below reflect constant currency for comparative purposes. Canadian currency figures included within the nine months ended September 30, 2017 have been translated at 2018 exchange rates:

	Nine Months Ended September 30,
Financial Information (in thousands)	2018		2017		Change		% Change
Income from real property	$	565,213	$	532,707	$	32,506	6.1	%
Property operating expenses:
Payroll and benefits	50,795		50,193		602		1.2	%
Legal, taxes, and insurance	6,973		5,267		1,706		32.4	%
Utilities	42,949		39,884		3,065		7.7	%
Supplies and repair	20,945		19,341		1,604		8.3	%
Other	18,429		16,871		1,558		9.2	%
Real estate taxes	40,627		39,027		1,600		4.1	%
Property operating expenses	180,718		170,583		10,135		5.9	%
Real Property NOI	$	384,495	$	362,124	$	22,371	6.2	%

Real property NOI growth of 6.2 percent is primarily due to increased Income from real property of $32.5 million, or 6.1 percent. The 6.1 percent increase is attributable to the 2.2 percent increase in occupancy and a 4.0 percent increase in total monthly base rent per site. This increase was partially offset by a $10.1 million, or 5.9 percent, increase in Property operating expenses, primarily attributable to increases in Utilities, Legal, taxes, and insurance, Real estate taxes and Supplies and repair expenses.

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HOME SALES AND RENTALS

The following table reflects certain financial and statistical information for our Home Sales Program for the nine months ended September 30, 2018 and 2017 (in thousands, except for average selling prices and statistical information):

	Nine Months Ended September 30,
Financial Information	2018			2017			Change			% Change
New home sales	$	42,978		$	24,760		$	18,218		73.6	%
Pre-owned home sales	79,270			66,559			12,711			19.1	%
Revenue from homes sales	122,248			91,319			30,929			33.9	%
New home cost of sales	37,187			21,044			16,143			76.7	%
Pre-owned home cost of sales	54,008			46,955			7,053			15.0	%
Cost of home sales	91,195			67,999			23,196			34.1	%
NOI / Gross profit	$	31,053		$	23,320		$	7,733		33.2	%
Gross profit – new homes	$	5,791		$	3,716		$	2,075		55.8	%
Gross margin % – new homes	13.5		%	15.0		%	(1.5		)%
Average selling price – new homes	$	111,342		$	95,598		$	15,744		16.5	%
Gross profit – pre-owned homes	$	25,262		$	19,604		$	5,658		28.9	%
Gross margin % – pre-owned homes	31.9		%	29.5		%	2.4		%
Average selling price – pre-owned homes	$	33,518		$	30,630		$	2,888		9.4	%
Statistical Information
Home sales volume:
New home sales	386			259			127			49.0	%
Pre-owned home sales	2,365			2,173			192			8.8	%
Total homes sold	2,751			2,432			319			13.1	%

Gross profit on new home sales increased $2.1 million, or 55.8 percent in the nine months ended September 30, 2018, as compared to the same period in 2017. This increase is primarily the result of a 49.0 percent increase in new home sales volumes.

Gross profit on pre-owned home sales increased $5.7 million, or 28.9 percent in the nine months ended September 30, 2018, as compared to the same period in 2017. This increase is primarily the result of an 8.8 percent increase in pre-owned home sales volumes combined with an increase in gross margin percentage primarily driven by a 9.4 percent increase in the average selling price of pre-owned homes.

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The following table reflects certain financial and other information for our Rental Program as of and for the nine months ended September 30, 2018 and 2017 (in thousands, except for statistical information):

	Nine Months Ended September 30,
Financial Information	2018		2017		Change			% Change
Revenues:
Rental home revenue	$	39,957	$	37,774	$	2,183		5.8	%
Site rent from Rental Program (1)	49,245		47,806		1,439			3.0	%
Rental Program revenue	89,202		85,580		3,622			4.2	%
Expenses:
Commissions	1,500		1,902		(402		)	(21.1	)%
Repairs and refurbishment	7,339		7,950		(611		)	(7.7	)%
Taxes and insurance	4,673		4,489		184			4.1	%
Marketing and other	3,065		2,480		585			23.6	%
Rental Program operating and maintenance	16,577		16,821		(244		)	(1.5	)%
Rental Program NOI	$	72,625	$	68,759	$	3,866		5.6	%
Other Information
Number of sold rental homes	825		828		(3		)	(0.4	)%

⁽¹⁾ The renter’s monthly payment includes the site rent and an amount attributable to the rental home lease. The site rent is reflected in the Real Property Operations segment. For purposes of management analysis, the site rent is included in the Rental Program revenue to evaluate the incremental revenue gains associated with implementation of the Rental Program, and assess the overall growth and performance of the Rental Program and financial impact to our operations.

Rental program NOI increased 5.6 percent inclusive of an increase in revenues of 4.2 percent, or $3.6 million, and a decrease in operating and maintenance expenses of 1.5 percent, or $0.2 million. The increase in revenues is partially attributable to a 5.0 percent increase in the weighted average monthly rental rate partially offset by a slight decrease in the number of occupied rentals. The decrease in operating and maintenance expenses of $0.2 million is primarily the result of increased marketing costs and taxes and insurance, partially offset by decreased commissions and repairs and refurbishment expenses in the nine months ended September 30, 2018 as compared to the same period in 2017.

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OTHER ITEMS - STATEMENTS OF OPERATIONS

The following table summarizes other income and expenses for the nine months ended September 30, 2018 and 2017 (amounts in thousands):

	Nine Months Ended September 30,
	2018			2017		Change			% Change
Ancillary revenues, net	$	17,222		$	10,091	$	7,131		70.7	%
Interest income	$	15,849		$	15,609	$	240		1.5	%
Brokerage commissions and other revenues, net	$	3,131		$	2,978	$	153		5.1	%
Home selling expenses	$	11,319		$	9,391	$	1,928		20.5	%
General and administrative expenses	$	61,432		$	55,912	$	5,520		9.9	%
Transaction costs	$	138		$	6,990	$	(6,852	)	(98.0	)%
Depreciation and amortization	$	206,192		$	189,719	$	16,473		8.7	%
Loss on extinguishment of debt	$	2,657		$	759	$	1,898		250.1	%
Interest expense	$	99,470		$	98,126	$	1,344		1.4	%
Catastrophic weather related charges, net	$	(1,987	)	$	8,124	$	(10,111	)	(124.5	)%
Other (expense) / income, net	$	(3,214	)	$	5,340	$	(8,554	)	(160.2	)%

Ancillary revenues, net - increased primarily due to an increase in golf course, restaurant, and resort activity revenues during the nine months ended September 30, 2018 as compared to the same period in 2017.

Homes selling expenses - increased as a result of higher commissions due to a higher volume of home sales during the nine months ended September 30, 2018 as compared to the same period in 2017.

General and administrative expenses - for the nine months ended September 30, 2018, increased primarily due to employee related costs including salaries and incentive compensation, as well as increased deferred compensation amortization as compared to the same period in 2017.

Transaction costs - for the nine months ended September 30, 2017, were incurred in connection with our property acquisitions, which were accounted for as business combinations with identifiable assets and liabilities measured at fair value and acquisition related costs expensed as incurred. Beginning January 2018, direct acquisition related costs are capitalized as part of the purchase price. Acquisitions costs that do no meet the criteria for capitalization are expensed as incurred. Refer to Note 16, “Recent Accounting Pronouncements” of our accompanying Consolidated Financial Statements for additional information.

Depreciation and amortization - increased as a result of our recent property acquisitions and our ongoing expansion and development activities. Refer to Note 3, “Real Estate Acquisitions” of our accompanying Consolidated Financial Statements for additional information.

Loss on extinguishment of debt - in the nine months ended September 30, 2018 is comprised of $2.0 million in connection with defeasement and repayments of collateralized term loans totaling $232.6 million and $0.6 million in connection with the term loan that was repaid in full. Refer to Note 9, “Debt and Lines of Credit,” in our accompanying Consolidated Financial Statements for additional information.

Catastrophic weather related charges, net - In September 2017, Hurricane Irma impacted our communities in Florida and Georgia. During the nine months ended September 30, 2018, we recorded a $2.0 million net gain primarily as a result of incremental losses where deductibles were previously met, and refinements to previous recovery estimates as damage losses were attributed to specific asset deductible categories and adjuster assumptions about the application of deductibles to debris removal. Refer to Note 17, “Commitments and Contingencies” of our accompanying Consolidated Financial Statements for additional information.

Other (expense) / income, net - in the nine months ended September 30, 2018, was primarily comprised of a foreign currency translation loss of $2.6 million, a contingent liability re-measurement of $0.3 million, and $0.3 million in other expenses, as compared to a foreign currency translation gain of $6.4 million, partially offset by contingent liability re-measurement of $1.1 million during the same period in 2017.

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FUNDS FROM OPERATIONS

The following table reconciles net income to FFO data for diluted purposes for the three and nine months ended September 30, 2018 and 2017 (in thousands, except per share amounts):

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2018			2017			2018			2017
Net income attributable to Sun Communities, Inc. common stockholders:	$	46,060		$	24,115		$	96,454		$	57,583
Adjustments:
Depreciation and amortization	72,269			64,484			206,892			190,143
Amounts attributable to noncontrolling interests	4,311			1,608			7,724			3,710
Preferred return to preferred OP units	549			578			1,654			1,750
Preferred distribution to Series A-4 preferred stock	432			441			1,305			1,666
Gain on disposition of assets, net	(6,603		)	(4,309		)	(16,977		)	(11,342		)
FFO attributable to Sun Communities, Inc. common stockholders and dilutive convertible securities (1)	117,018			86,917			297,052			243,510
Adjustments:
Transaction costs (2)	—			2,167			—			6,990
Other acquisition related costs (3)	345			343			781			2,712
Loss on extinguishment of debt	939			—			2,657			759
Catastrophic weather related charges, net	173			7,756			(1,987		)	8,124
Loss of earnings - catastrophic weather related (4)	325			—			975			—
Other (income) / expense, net	(1,231		)	(3,345		)	3,214			(5,340		)
Debt premium write-off	(411		)	—			(1,402		)	(438		)
Ground lease intangible write-off	—			—			817			—
Deferred tax benefit	(199		)	(81		)	(434		)	(745		)
Core FFO attributable to Sun Communities, Inc. common stockholders and dilutive convertible(1)	$	116,959		$	93,757		$	301,673		$	255,572
Weighted average common shares outstanding - basic:	81,599			78,369			80,022			75,234
Add:
Common stock issuable upon conversion of stock options	2			2			2			2
Restricted stock	480			437			633			610
Common OP units	2,731			2,761			2,735			2,758
Common stock issuable upon conversion of Series A-1 preferred OP units	813			858			825			877
Common stock issuable upon conversion of Series A-4 preferred stock	472			482			472			620
Common stock issuable upon conversion of Aspen preferred OP units	448			—			—			—
Common stock issuable upon conversion of Series A-3 preferred OP units	75			75			75			75
Weighted average common shares outstanding - fully diluted	86,620			82,984			84,764			80,176
FFO attributable to Sun Communities, Inc. common stockholders and dilutive convertible securities per share - fully diluted	$	1.35		$	1.05		$	3.50		$	3.04
Core FFO attributable to Sun Communities, Inc. common stockholders and dilutive convertible securities per share - fully diluted	$	1.35		$	1.13		$	3.56		$	3.19

⁽¹⁾    The effect of certain anti-dilutive convertible securities is excluded from these items.

⁽²⁾  In January 2018, we adopted ASU 2017-01, which clarified the definition of a business with the objective of assisting entities in evaluating whether transactions should be accounted for as acquisitions of assets or businesses. Under previous guidance, substantially all of our property acquisitions were accounted for as business combinations with identifiable assets and liabilities measured at fair value, and acquisition related costs expensed as incurred and reported as Transaction costs. Under the new guidance, we expect that substantially all of our future property acquisitions will be accounted for as asset acquisitions.

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The purchase price of these properties are allocated on a relative fair value basis and capitalize direct acquisition related costs as part of the purchase price. Acquisitions costs that do not meet the criteria for capitalization will be expensed as incurred.

⁽³⁾  These costs represent the expenses incurred to bring recently acquired properties up to our operating standards, including items such as tree trimming and painting costs that do not meet our capitalization policy.

⁽⁴⁾  Adjustment represents estimated loss of earnings in excess of the applicable business interruption deductible in relation to our three Florida Keys communities that were impaired by Hurricane Irma. We are actively working with our insurer on the related claims, but have not yet received any advance for the expected recovery of lost earnings.

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LIQUIDITY AND CAPITAL RESOURCES

Our principal liquidity demands have historically been, and are expected to continue to be, distributions to our stockholders and the unit holders of the Operating Partnership, capital improvement of properties, the purchase of new and pre-owned homes, property acquisitions, development and expansion of properties, and debt repayment.

Subject to market conditions, we intend to continue to identify opportunities to expand our development pipeline and acquire existing communities. We finance acquisitions through available cash, secured financing, draws on our lines of credit, the assumption of existing debt on properties, and the issuance of equity securities. We will continue to evaluate acquisition opportunities that meet our criteria. Refer to Note 3, “Real Estate Acquisitions” in our accompanying Consolidated Financial Statements for information regarding recent community acquisitions.

We also intend to continue to strengthen our capital and liquidity positions by focusing on our core fundamentals, which are generating positive cash flows from operations, maintaining appropriate debt levels and leverage ratios, and controlling overhead costs. We intend to meet our liquidity requirements through available cash balances, cash flows generated from operations, draws on our lines of credit, and the use of debt and equity offerings under our shelf registration statement. Refer to Note 9, “Debt and Lines of Credit” and Note 10, “Equity and Mezzanine Securities” in our accompanying Consolidated Financial Statements for additional information.

Our capital expenditures include expansion and development, lot modifications, recurring capital expenditures and rental home purchases. For the nine months ended September 30, 2018 and 2017, expansion and development activities of $96.2 million and $55.9 million, respectively, related to costs consisting primarily of construction of sites and other costs necessary to complete home site improvements.

For the nine months ended September 30, 2018 and 2017, lot modification expenditures were $15.5 million and $18.1 million, respectively. These expenditures improve asset quality in our communities and are incurred when an existing home is removed and the site is prepared for a new home (more often than not, a multi-sectional home). These activities, which are mandated by strict manufacturer’s installation requirements and state building codes, include items such as new foundations, driveways, and utility upgrades.

For the nine months ended September 30, 2018 and 2017, recurring capital expenditures of $14.7 million and $12.6 million, respectively, related to our continued commitment to the upkeep of our properties.

We invest in the acquisition of homes intended for the Rental Program. Expenditures for these investments depend upon the condition of the markets for repossessions and new home sales, as well as rental homes. We finance new home purchases with a $12.0 million manufactured home floor plan facility. Our ability to purchase homes for sale or rent may be limited by cash received from third-party financing of our home sales, available manufactured home floor plan financing and working capital available on our lines of credit.

Our cash flow activities are summarized as follows (in thousands):

	Nine Months Ended September 30,
	2018			2017
Net Cash Provided by Operating Activities	$	301,204		$	226,142
Net Cash Used for Investing Activities	$	(545,103	)	$	(267,685	)
Net Cash Provided by Financing Activities	$	349,578		$	173,368
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	$	(94	)	$	253

Cash, cash equivalents and restricted cash increased by $105.6 million from $23.5 million as of December 31, 2017, to $129.1 million as of September 30, 2018.

Operating Activities

Net cash provided by operating activities increased by $75.1 million from $226.1 million for the nine months ended September 30, 2017 to $301.2 million for the nine months ended September 30, 2018.

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Our net cash flows provided by operating activities from continuing operations may be adversely impacted by, among other things: (a) the market and economic conditions in our current markets generally, and specifically in metropolitan areas of our current markets; (b) lower occupancy and rental rates of our properties; (c) increased operating costs, such as wage and benefit costs, insurance premiums, real estate taxes and utilities, that cannot be passed on to our tenants; (d) decreased sales of manufactured homes; and (e) current volatility in economic conditions and the financial markets. See “Risk Factors” in Part I, Item 1A of our 2017 Annual Report.

Investing Activities

Net cash used for investing activities was $545.1 million for the nine months ended September 30, 2018, compared to $267.7 million for the nine months ended September 30, 2017. Refer to Note 3, “Real Estate Acquisitions” in our accompanying Consolidated Financial Statements for additional information.

Financing Activities

Net cash provided by financing activities was $349.6 million for the nine months ended September 30, 2018, compared to net cash provided by financing activities of $173.4 million for the nine months ended September 30, 2017. Refer to Note 9, “Debt and Lines of Credit” and Note 10, “Equity and Mezzanine Securities” in our accompanying Consolidated Financial Statements for additional information.

Financial Flexibility

In July 2017, we entered into a new at the market offering sales agreement (the “Sales Agreement”) with BMO Capital Markets Corp., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc., Robert W. Baird & Co. Incorporated, Fifth Third Securities, Inc., RBC Capital Markets, LLC, BTIG, LLC, Jefferies LLC, Credit Suisse Securities (USA) LLC and Samuel A. Ramirez & Company, Inc. (each, a “Sales Agent;” collectively, the “Sales Agents”), whereby we may offer and sell shares of our common stock, having an aggregate offering price of up to $450.0 million, from time to time through the Sales Agents. The Sales Agents are entitled to compensation in an agreed amount not to exceed 2.0 percent of the gross price per share for any shares sold from time to time under the Sales Agreement. Through September 30, 2018, we have sold shares of our common stock for gross proceeds of $163.8 million under the Sales Agreement.

In April 2017, we amended and restated our credit agreement (the “A&R Credit Agreement”) with Citibank, N.A. (“Citibank”) and certain other lenders. Pursuant to the A&R Credit Agreement, we entered into a senior revolving credit facility with Citibank and certain other lenders in the amount of $650.0 million, comprised of a $550.0 million revolving loan and a $100.0 million term loan (the “A&R Facility”). We repaid the term loan in full on September 7, 2018. The A&R Credit Agreement has a four-year term ending April 25, 2021, which can be extended for two additional six-month periods at our option, subject to the satisfaction of certain conditions as defined in the A&R Credit Agreement. The A&R Credit Agreement also provides for, subject to the satisfaction of certain conditions, additional commitments in an amount not to exceed $350.0 million. If additional borrowings are made pursuant to any such additional commitments, the aggregate borrowing limit under the A&R Facility may be increased up to $900.0 million.

The A&R Facility bears interest at a floating rate based on the Eurodollar rate plus a margin that is determined based on our leverage ratio calculated in accordance with the A&R Credit Agreement, which margin can range from 1.35 percent to 2.20 percent for the revolving loan and could range from 1.30 percent to 2.15 percent for the term loan. As of September 30, 2018, the margin based on our leverage ratio was 1.35 percent and 1.30 percent on the revolving and term loans, respectively. We had no borrowings on the revolving loan and no borrowings on the term loan as of September 30, 2018.

The A&R Facility provides us with the ability to issue letters of credit. Our issuance of letters of credit does not increase our borrowings outstanding under our line of credit, but does reduce the borrowing amount available. At September 30, 2018 and December 31, 2017, approximately $4.2 million and $1.3 million, respectively, of availability was used to back standby letters of credit.

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Pursuant to the terms of the A&R Facility, we are subject to various financial and other covenants. We are currently in compliance with these covenants. The most restrictive financial covenants for the A&R Facility are as follows:

Covenant	Requirement	As of September 30, 2018
Maximum Leverage Ratio	<65%	28.2%
Minimum Fixed Charge Coverage Ratio	>1.40	2.91
Minimum Tangible Net Worth	>2,513,492	$4,680,920
Maximum Dividend Payout Ratio	<95.0%	61.2%

We anticipate meeting our long-term liquidity requirements, such as scheduled debt maturities, large property acquisitions, expansion and development of communities, and Operating Partnership unit redemptions through the issuance of certain debt or equity securities and/or the collateralization of our properties. At September 30, 2018, we had 185 unencumbered properties, of which 61 support the borrowing base for our $650.0 million line of credit. 

From time to time, we may also issue shares of our capital stock, issue equity units in our Operating Partnership, obtain debt financing, or sell selected assets. Our ability to finance our long-term liquidity requirements in such a manner will be affected by numerous economic factors affecting the MH and RV community industry at the time, including the availability and cost of mortgage debt, our financial condition, the operating history of the properties, the state of the debt and equity markets, and the general national, regional, and local economic conditions. When it becomes necessary for us to approach the credit markets, the volatility in those markets could make borrowing more difficult to secure, more expensive, or effectively unavailable. See “Risk Factors” in Part I, Item 1A of our 2017 Annual Report and in Part II, Item 1A of this report. If we are unable to obtain additional debt or equity financing on acceptable terms, our business, results of operations and financial condition would be adversely impacted.

As of September 30, 2018, our net debt to enterprise value was approximately 23.9 percent (assuming conversion of all common OP units, Series A-1 preferred OP units, Series A-3 preferred OP units, Series A-4 preferred OP units, and Series C preferred OP units to shares of common stock). Our debt has a weighted average maturity of approximately 9.4 years and a weighted average interest rate of 4.5 percent.

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CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains various “forward-looking statements” within the meaning of the Securities Act of 1933, as amended (the “Securities Act”), and the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and we intend that such forward-looking statements will be subject to the safe harbors created thereby. For this purpose, any statements contained in this filing that relate to expectations, beliefs, projections, future plans and strategies, trends or prospective events or developments and similar expressions concerning matters that are not historical facts are deemed to be forward-looking statements. Words such as “forecasts,” “intends,” “intend,” “intended,” “goal,” “estimate,” “estimates,” “expects,” “expect,” “expected,” “project,” “projected,” “projections,” “plans,” “predicts,” “potential,” “seeks,” “anticipates,” “anticipated,” “should,” “could,” “may,” “will,” “designed to,” “foreseeable future,” “believe,” “believes,” “scheduled,” “guidance” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these words. These forward-looking statements reflect our current views with respect to future events and financial performance, but involve known and unknown risks and uncertainties, both general and specific to the matters discussed in this filing. These risks and uncertainties may cause our actual results to be materially different from any future results expressed or implied by such forward-looking statements. In addition to the risks disclosed under “Risk Factors” in Part I, Item IA, contained in our 2017 Annual Report and our other filings with the SEC, such risks and uncertainties include, but are not limited to:

• changes in general economic conditions, the real estate industry, and the markets in which we operate;

• difficulties in our ability to evaluate, finance, complete and integrate acquisitions, developments and expansions successfully;

• our liquidity and refinancing demands;

• our ability to obtain or refinance maturing debt;

• our ability to maintain compliance with covenants contained in our debt facilities;

• availability of capital;

• changes in foreign currency exchange rates, including between the U.S. dollar and Canadian dollar;

• our ability to maintain rental rates and occupancy levels;

• our failure to maintain effective internal control over financial reporting and disclosure controls and procedures;

• increases in interest rates and operating costs, including insurance premiums and real property taxes;

• risks related to natural disasters such as hurricanes, earthquakes, floods and wildfires;

• general volatility of the capital markets and the market price of shares of our capital stock;

• our failure to maintain our status as a REIT;

• changes in real estate and zoning laws and regulations;

• legislative or regulatory changes, including changes to laws governing the taxation of REITs;

• litigation, judgments or settlements;

• competitive market forces;

• the ability of manufactured home buyers to obtain financing; and

• the level of repossessions by manufactured home lenders.

Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date the statement was made. We undertake no obligation to publicly update or revise any forward-looking statements included or incorporated by reference into this filing, whether as a result of new information, future events, changes in our expectations or otherwise, except as required by law.

Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. All written and oral forward-looking statements attributable to us or persons acting on our behalf are qualified in their entirety by these cautionary statements.

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ITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk is the exposure to loss resulting from changes in market factors such as interest rates, foreign currency exchange rates, commodity prices, and equity prices.

Interest Rate Risk

Our principal market risk exposure is interest rate risk. We mitigate this risk by maintaining prudent amounts of leverage, minimizing capital costs, and interest expense while continuously evaluating all available debt and equity resources and following established risk management policies and procedures, which include the periodic use of derivatives. Our primary strategy in entering into derivative contracts is to minimize the variability that interest rate changes could have on our future cash flows. From time to time, we employ derivative instruments that effectively convert a portion of our variable rate debt to fixed rate debt. We do not enter into derivative instruments for speculative purposes.

Our variable rate debt totaled zero and $153.7 million as of September 30, 2018 and 2017, respectively, and bears interest at Prime or various LIBOR rates. If Prime or LIBOR increased or decreased by 1.0 percent, our interest expense would have increased or decreased by approximately $2.2 million and $1.9 million for the nine months ended September 30, 2018 and 2017, respectively, based on the $300.8 million and $250.7 million average balances outstanding under our variable rate debt facilities, respectively.

Foreign Currency Exchange Rate Risk

Foreign currency exchange rate risk is the risk that fluctuations in currencies against the U.S. dollar will negatively impact our results of operations. We are exposed to foreign currency exchange rate risk as a result of remeasurement and translation of the assets and liabilities of our Canadian properties into U.S. dollars. Fluctuations in foreign currency exchange rates can therefore create volatility in our results of operations and may adversely affect our financial condition.

At September 30, 2018 and December 31, 2017, our stockholder’s equity included $98.2 million and $91.5 million from our Canadian subsidiaries, respectively, which represented 3.1 percent and 3.4 percent of total equity, respectively. Based on our sensitivity analysis, a 10.0 percent strengthening of the U.S. dollar against the Canadian dollar would have caused a reduction of $9.8 million and $9.2 million to our total stockholder’s equity at September 30, 2018 and December 31, 2017, respectively.

ITEM 4.  CONTROLS AND PROCEDURES

Evaluation of disclosure controls and procedures

We maintain disclosure controls and procedures designed to provide reasonable assurance that information required to be disclosed in reports filed under the Exchange Act is recorded, processed, summarized and reported within the specified time periods and accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Our management, with the participation of our CEO and CFO, evaluated the effectiveness of our disclosure controls and procedures (pursuant to Rules 13a-15(e) or 15d-15(e) of the Exchange Act) at September 30, 2018. Based upon this evaluation, our CEO and CFO concluded that our disclosure controls and procedures were effective as of September 30, 2018.

Changes in internal control over financial reporting

There have not been any changes in our internal control over financial reporting during the three months ended September 30, 2018 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

48

PART II – OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

Refer to “Legal Proceedings” in Part 1 - Item 1 - Note 17, “Commitments and Contingencies” in our accompanying Consolidated Financial Statements.

ITEM 1A.  RISK FACTORS

In addition to the other information set forth in this report, you should carefully consider the factors described in Part 1, Item 1A., “Risk Factors,” in our 2017 Annual Report, which could materially affect our business, financial condition or future results. There have been no material changes to the disclosure on these matters set forth in the 2017 Annual Report.

ITEM 2.  UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Holders of our OP units have converted the following units during the three months ended September 30, 2018:

		Three Months Ended   September 30, 2018
Series	Conversion Rate	Units/Shares Converted	Common Stock
Common OP unit	1	6,080	6,080
Series A-1 preferred OP unit	2.439	9,500	23,169
Series A-4 preferred OP unit	0.4444	1,973	876
Series A-4 preferred stock	0.4444	—	—
Series C preferred OP unit	1.11	—	—

All of the above shares of common stock were issued in private placements in reliance on Section 4(a)(2) of the Securities Act of 1933, as amended, including Regulation D promulgated thereunder. No underwriters were used in connection with any of such issuances.

49

ITEM 6.  EXHIBITS

Refer to “Exhibit Index.”

50

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Dated: October 25, 2018	By:	/s/ Karen J. Dearing
		Karen J. Dearing, Chief Financial Officer and Secretary (Duly authorized officer and principal financial officer)

51

EXHIBIT INDEX

Exhibit No.	Description	Method of Filing
31.1	Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15(d)-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
31.2	Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15(d)-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
32.1	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	Filed herewith
101.INS	XBRL Instance Document	Filed herewith
101.SCH	XBRL Taxonomy Extension Schema Document	Filed herewith
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document	Filed herewith
101.LAB	XBRL Taxonomy Extension Label Linkbase Document	Filed herewith
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document	Filed herewith
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document	Filed herewith

52

EX-31.1

Exhibit 31.1

CERTIFICATIONS

(As Adopted Under Section 302 of the Sarbanes-Oxley Act of 2002)

I, Gary A. Shiffman, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Sun Communities, Inc.

2. Based on my knowledge, this 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 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(s) 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 15d-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.

5. The registrant's other certifying officer(s) 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 registrant's board of directors (or persons performing the equivalent function):

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.

Dated: October 25, 2018	/s/ Gary A. Shiffman
	Gary A. Shiffman, Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

(As Adopted Under Section 302 of the Sarbanes-Oxley Act of 2002)

I, Karen J. Dearing, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Sun Communities, Inc.

2. Based on my knowledge, this 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 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(s) 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 15d-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.

5. The registrant’s other certifying officer(s) 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 registrant’s board of directors (or persons performing the equivalent function):

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.

Dated: October 25, 2018	/s/ Karen J. Dearing
	Karen J. Dearing, Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

(Adopted Under Section 906 of the Sarbanes-Oxley Act of 2002)

The undersigned officers, Gary A. Shiffman and Karen J. Dearing, hereby certify that to the best of their knowledge: (a) this Quarterly Report on Form 10-Q of Sun Communities, Inc., for the period ended September 30, 2018, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and (b) the information contained in this Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Signature	Date
/s/ Gary A. Shiffman	Dated: October 25, 2018
Gary A. Shiffman, Chief Executive Officer
/s/ Karen J. Dearing	Dated: October 25, 2018
Karen J. Dearing, Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to Sun Communities, Inc. and will be retained by Sun Communities, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 18, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Trading Symbol	SUI
Entity Registrant Name	SUN COMMUNITIES INC
Entity Central Index Key	0000912593
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		86,359,824

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Land	$ 1,187,502	$ 1,107,838
Land improvements and buildings	5,523,554	5,102,014
Rental homes and improvements	559,290	528,074
Furniture, fixtures and equipment	174,315	144,953
Investment property	7,444,661	6,882,879
Accumulated depreciation	(1,390,684)	(1,237,525)
Investment property, net (including $300,693 and $50,193 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	6,053,977	5,645,354
Cash and cash equivalents	113,556	10,127
Inventory of manufactured homes	41,030	30,430
Notes and other receivables, net	167,698	163,496
Collateralized receivables, net	112,228	128,246
Other assets, net (including $20,655 and $1,659 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	165,237	134,304
TOTAL ASSETS	6,653,726	6,111,957
LIABILITIES
Mortgage loans payable (including $44,426 and $41,970 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	2,819,225	2,867,356
Lines of credit		41,257
Distributions payable	63,250	55,225
Customer Advances and Deposits	135,647	132,205
Other liabilities (including $7,434 and $1,468 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	163,459	138,536
TOTAL LIABILITIES	3,367,285	3,405,204
Commitments and contingencies	0	0
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	21,976	0
STOCKHOLDERS' EQUITY
Common stock, $0.01 par value. Authorized: 180,000 shares; Issued and outstanding: 86,355 shares at September 30, 2018 and 79,679 shares at December 31, 2017	864	797
Additional paid-in capital	4,396,092	3,758,533
Accumulated other comprehensive (loss) / income	(390)	1,102
Distributions in excess of accumulated earnings	(1,237,428)	(1,162,001)
Total Sun Communities, Inc. stockholders' equity	3,159,138	2,598,431
Noncontrolling interests:
Common and preferred OP units	56,018	60,971
Consolidated variable interest entities	7,544	4,285
Total noncontrolling interests	63,562	65,256
TOTAL STOCKHOLDERS' EQUITY	3,222,700	2,663,687
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	6,653,726	6,111,957
Series A-4 Preferred Stock
LIABILITIES
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount	31,739	32,414
Series A-4 preferred OP units
LIABILITIES
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount	10,026	10,652
Preferred Equity, Mandatorily Redeemable [Member]
LIABILITIES
Preferred OP units - mandatorily redeemable	35,277	0
Aspen Series B3 Preferred Operating Partnership Units [Member]
LIABILITIES
Mortgage loans payable (including $44,426 and $41,970 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	37,338
Preferred OP units - mandatorily redeemable	37,338	41,443
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member]
LIABILITIES
Mortgage loans payable (including $44,426 and $41,970 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)		129,182
Lines of credit	0
Reported Value Measurement [Member] | Secured Debt [Member]
LIABILITIES
Mortgage loans payable (including $44,426 and $41,970 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)	113,089	129,182
Collateralized Receivables [Member]
LIABILITIES
Financing Receivable, Gross	113,089
Collateralized Receivables [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member]
ASSETS
Collateralized receivables, net	112,228
Collateralized Receivables [Member] | Reported Value Measurement [Member]
ASSETS
Notes and other receivables, net	112,200	128,246
Collateralized Receivables [Member] | Reported Value Measurement [Member] | Secured Debt [Member] | Fair Value, Measurements, Recurring [Member]
LIABILITIES
Financing Receivable, Gross	$ 113,089	$ 129,182

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Investment property, net	$ 6,053,977	$ 5,645,354
Other assets	165,237	134,304
Secured debt	2,819,225	2,867,356
Other liabilities	$ 163,459	$ 138,536
Common Stock, Par Value	$ 0.01	$ 0.01
Common Stock, Shares Authorized	180,000	180,000
Common Stock, Shares Issued	86,355	79,679
Common Stock, Shares Outstanding	86,355	79,679
Series A-4 Preferred Stock
Series A-4 Preferred Stock, Par Value	$ 0.01	$ 0.01
Series A-4 Preferred Stock, Shares Issued	1,063	1,085
Series A-4 Preferred Stock, Shares Outstanding	1,063	1,085
Variable Interest Entity, Primary Beneficiary [Member]
Investment property, net	$ 300,693	$ 50,193
Other assets	20,655	1,659
Secured debt	44,426	41,970
Preferred OP units - mandatorily redeemable	35,277	0
Other liabilities	$ 7,434	$ 1,468

XML

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES
Income from real property	$ 229,607	$ 198,263	$ 625,488	$ 560,778
Revenue from home sales	46,131	33,197	122,248	91,319
Rental home revenue	13,589	12,757	39,957	37,774
Ancillary revenues	27,608	17,017	46,207	32,086
Interest	5,256	5,920	15,849	15,609
Brokerage commissions and other revenues, net	1,347	1,091	3,131	2,978
Total revenues	323,538	268,245	852,880	740,544
EXPENSES
Property operating and maintenance	71,364	59,249	181,579	159,861
Real estate taxes	14,533	13,053	42,445	39,322
Cost of home sales	33,692	25,094	91,195	67,999
Rental home operating and maintenance	6,139	6,775	16,577	16,821
Ancillary expenses	15,361	10,086	28,985	21,995
Home selling expenses	4,043	3,290	11,319	9,391
General and administrative	20,127	18,174	61,432	55,912
Transaction costs	24	2,167	138	6,990
Depreciation and amortization	71,982	64,232	206,192	189,719
Loss on extinguishment of debt	939	0	2,657	759
Interest	33,521	32,085	96,919	95,765
Interest on mandatorily redeemable preferred OP units / equity	1,142	790	2,551	2,361
Total expenses	273,040	242,751	740,002	675,019
Income before other items	50,498	25,494	112,878	65,525
Catastrophic weather related charges	173	7,756	1,987	8,124
Other income / (expense), net	1,231	3,345	(3,214)	5,340
Current tax (expense) / benefit	(213)
Provision for state income taxes	200	38	(612)	(133)
Deferred tax benefit	199	81	434	745
Net income	51,715	28,958	109,486	71,477
Less: Preferred return to preferred OP units	(1,152)	(1,112)	(3,335)	(3,482)
Less: Amounts attributable to noncontrolling interests	(4,071)	(1,776)	(8,392)	(4,179)
Net income attributable to Sun Communities, Inc.	46,492	26,070	97,759	63,816
Less: Preferred stock distribution	(432)	(1,955)	(1,305)	(6,233)
Net income attributable to Sun Communities, Inc. common stockholders	$ 46,060	$ 24,115	$ 96,454	$ 57,583
Weighted average common shares outstanding:
Basic	81,599	78,369	80,022	75,234
Diluted	82,081	78,808	80,024	75,846
Earnings per share:
Basic	$ 0.56	$ 0.31	$ 1.19	$ 0.76
Diluted	$ 0.56	$ 0.31	$ 1.19	$ 0.76

XML

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 51,715	$ 28,958	$ 109,486	$ 71,477
Foreign currency translation adjustment	1,890	2,648	(1,565)	4,977
Total comprehensive income	53,605	31,606	107,921	76,454
Less: Comprehensive income attributable to noncontrolling interests	4,167	1,912	8,319	4,444
Comprehensive income attributable to Sun Communities, Inc.	$ 49,438	$ 29,694	$ 99,602	$ 72,010

XML

Consolidated Statement Of Stockholders' Equity - 9 months ended Sep. 30, 2018 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Distributions in Excess of Accumulated Earnings	Accumulated Other Comprehensive Income / (Loss)	Noncontrolling Interests	Common OP Units	Series A-4 Preferred Stock
Temporary equity, beginning balance at Dec. 31, 2017	$ 43,066
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of stock							$ (342)	$ (675)
Equity Interests - NG Sun LLC	21,976
Net income	225
Distributions	(509)
Temporary equity, ending balance at Sep. 30, 2018	63,741
Balance at Dec. 31, 2017	2,663,687	$ 797	$ 3,758,533	$ (1,162,001)	$ 1,102	$ 65,256
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and common OP units, net	624,152	$ 66	624,086
Conversion of units		1
Conversion of OP units	(342)		(1,488)			(1,147)
Conversion of Series A-4 preferred stock	675		675
Share-based compensation - amortization and forfeitures	11,557		11,310	247
Foreign currency translation	(1,565)				(1,492)	(73)
Net income	109,261			101,093		8,168
Distributions	(185,409)			(176,767)		(8,642)
Balance at Sep. 30, 2018	$ 3,222,700	$ 864	$ 4,396,092	$ (1,237,428)	$ (390)	$ 63,562

XML

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended	9 Months Ended		12 Months Ended
	Jun. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
OPERATING ACTIVITIES:
NET CASH PROVIDED BY OPERATING ACTIVITIES		$ 301,204	$ 226,142
INVESTING ACTIVITIES:
Investment in properties		(257,017)	(203,233)
Acquisitions of properties, net of cash acquired		(305,724)	(70,328)
Proceeds from dispositions of assets and depreciated homes, net		34,825	6,592
Purchases of notes receivable		(216)	(2,480)
Repayments of notes and other receivables		2,880	1,764
Investment in affiliates		(19,851)	0
NET CASH USED FOR INVESTING ACTIVITIES		(545,103)	(267,685)
FINANCING ACTIVITIES:
Issuance of common stock, OP units, and preferred OP units, net		624,152	457,638
Borrowings on lines of credit		1,187,098	575,351
Payments on lines of credit		(1,228,907)	(675,695)
Proceeds from issuance of other debt		228,336	85,081
Payments on other debt		(273,380)	(72,024)
Prepayment penalty on debt		(2,024)	(759)
Redemption of Series A-4 preferred stock and OP units			(24,698)
Distributions to stockholders, OP unit holders, and preferred OP unit holders		(177,926)	(165,937)
Payments for deferred financing costs		(1,645)	(5,589)
Proceeds from (Payments for) Other Financing Activities		(2,021)	0
NET CASH PROVIDED BY FINANCING ACTIVITIES		349,578	173,368
Effect of exchange rate changes on cash, cash equivalents and restricted cash		(94)	253
Net change in cash, cash equivalents and restricted cash		105,585	132,078
Cash, cash equivalents and restricted cash, beginning of period	$ 23,509	23,509	25,313	$ 25,313
Cash, cash equivalents and restricted cash, end of period		129,094	157,391	23,509
SUPPLEMENTAL INFORMATION:
Cash paid for interest (net of capitalized interest of $3,216 and $1,981 respectively)		94,801	92,362
Cash paid for interest on mandatorily redeemable debt		2,551	2,361
Cash paid (refunds) for income taxes		741	(53)
Noncash investing and financing activities:
Reduction in secured borrowing balance		16,093	17,674
Change in distributions declared and outstanding		7,991	4,527
Conversion of common and preferred OP units		1,489	3,240
Conversion of Series A-4 Preferred Stock		675	4,720
Acquisitions - Common stock and OP units issued		0	28,410
Acquisitions - debt assumed		3,120		$ 4,592
Acquisitions - receivable due from seller		0	5,000
Series B-3 Preferred OP Units [Member]
FINANCING ACTIVITIES:
Redemption of Series A-4 preferred stock and OP units		(4,105)	0
Series B Preferred Stock [Member]
Noncash investing and financing activities:
Noncash Or Part Noncash Acquisition, Noncash Financial Or Equity Instrument Consideration, Value Of Shares Issued		21,976	0
Series A Preferred Stock [Member]
Noncash investing and financing activities:
Noncash Or Part Noncash Acquisition, Noncash Financial Or Equity Instrument Consideration, Value Of Shares Issued	$ 35,277		$ 0
Series A-4 Preferred Stock and OP Units [Member]
FINANCING ACTIVITIES:
Redemption of Series A-4 preferred stock and OP units		$ 0

XML

Consolidated Statements Of Cash Flows (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Cash Flows [Abstract]
Capitalized interest	$ 3,216	$ 1,981

XML

Basis of Presentation

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

Sun Communities, Inc., a Maryland corporation, and all wholly-owned or majority-owned and controlled subsidiaries, including Sun Communities Operating Limited Partnership (the “Operating Partnership”) and Sun Home Services, Inc. (“SHS”) are referred to herein as the “Company,” “us,” “we,” and “our.”

We follow accounting standards set by the Financial Accounting Standards Board (“FASB”). FASB sets generally accepted accounting principles (“GAAP”), which we follow to ensure that we consistently report our financial condition, results of operations, and cash flows. References to GAAP issued by the FASB in these footnotes are to the FASB Accounting Standards Codification (“ASC”).

These unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial information and in accordance with GAAP. Pursuant to the SEC rules and regulations we present interim disclosures and certain information and footnote disclosures as required. Accordingly, the unaudited Consolidated Financial Statements do not include all of the information and footnotes required by GAAP for complete financial statements. The accompanying unaudited Consolidated Financial Statements reflect, in the opinion of management, all adjustments, including adjustments of a normal and recurring nature, necessary for a fair presentation of the interim financial statements. All intercompany transactions have been eliminated in consolidation. Certain reclassifications have been made to prior period financial statements in order to conform to current period presentation.

The results of operations for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. These unaudited Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2017 as filed with the SEC on February 22, 2018 (the “2017 Annual Report”). These statements have been prepared on a basis that is substantially consistent with the accounting principles applied in our 2017 Annual Report.

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Revenue

9 Months Ended

Sep. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

Disaggregation of Revenue

The following tables disaggregates our revenue by major source (in thousands):

	Three Months Ended   September 30, 2018						Three Months Ended   September 30, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations		Home Sales and Rentals		Consolidated
REVENUE
Income from real property	$	229,607	$	—	$	229,607	$	198,263	$	—	$	198,263
Revenue from home sales	—		46,131		46,131		—		33,197		33,197
Rental home revenue	—		13,589		13,589		—		12,757		12,757
Ancillary revenues	27,608		—		27,608		17,017		—		17,017
Interest	5,256		—		5,256		5,920		—		5,920
Brokerage commissions and other revenues, net	1,347		—		1,347		1,091		—		1,091
Total revenue	$	263,818	$	59,720	$	323,538	$	222,291	$	45,954	$	268,245

	Nine Months Ended   September 30, 2018						Nine Months Ended   September 30, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations		Home Sales and Rentals		Consolidated
REVENUE
Income from real property	$	625,488	$	—	$	625,488	$	560,778	$	—	$	560,778
Revenue from home sales	—		122,248		122,248		—		91,319		91,319
Rental home revenue	—		39,957		39,957		—		37,774		37,774
Ancillary revenues	46,207		—		46,207		32,086		—		32,086
Interest	15,849		—		15,849		15,609		—		15,609
Brokerage commissions and other revenues, net	3,131		—		3,131		2,978		—		2,978
Total revenue	$	690,675	$	162,205	$	852,880	$	611,451	$	129,093	$	740,544

Revenue Recognition Policies and Performance Obligations

On January 1, 2018, we adopted FASB Accounting Standards Update (“ASU”) 2014-09 “Revenue from Contracts with Customers” and the other related ASUs and amendments to the codification (collectively “ASC 606”). The core principle of ASC 606 is 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. A five-step transactional analysis is required to determine how and when to recognize revenue. ASC 606 applies to all contracts with customers, except those that are within the scope of other topics in the FASB accounting standards codification.

As a real estate owner and operator, the majority of our revenue is derived from site and home leases that are accounted for pursuant to ASC 840 “Leases.” For transactions in the scope of ASC 606, we recognize revenue when control of goods or services transfers to the customer, in the amount that we expect to receive for the transfer of goods or provision of services. The adoption of ASC 606 did not result in any change to our accounting policies for revenue recognition. Accordingly, retrospective application to prior periods or a cumulative catch-up adjustment was unnecessary.

Income from real property - Residents in our communities lease the site on which their home is located, and either own or lease their home. Lease revenues for sites and homes fall under the scope of ASC 840, and are accounted for as operating leases with straight-line recognition. Resident leases are generally for one-year or month-to-month terms, and are renewable by mutual agreement from us and the resident, or in some cases, as provided by jurisdictional statute. Non-lease components of our site lease contracts, which are primarily provision of utility services, are accounted for with the site lease as a single lease under ASC 840. Additionally, we include collections of real estate taxes from residents within Income from real property.

Revenue from home sales - Our taxable REIT subsidiary, SHS, sells manufactured homes (“MH”) to current and prospective residents in our communities. Prior to adoption of ASC 606, we recognized revenue for home sales pursuant to ASC 605 “Revenue Recognition,” as manufactured homes are tangible personal property that can be located on any land parcel. Manufactured homes are not permanent fixtures or improvements to the underlying real estate, and were therefore not considered to be subject to the guidance in ASC 360-20 “Real Estate Sales” by the Company. In accordance with the core principle of ASC 606, we recognize revenue from home sales at the time of closing when control of the home transfers to the customer. After closing of the sale transaction, we have no remaining performance obligation.

Rental home revenue - is comprised of rental agreements whereby we lease homes to residents in our communities. We account for these revenues under ASC 840.

Ancillary revenues - are primarily composed of proceeds from restaurant, golf, merchandise and other activities at our recreational vehicle (“RV”) communities. Revenues are recognized at point of sale when control of the good or service transfers to the customer and our performance obligation is satisfied. Sales and other taxes that we collect concurrent with revenue-producing activities are excluded from transaction price.

Interest income - is earned primarily on our notes and collateralized receivables, which includes installment loans for manufactured homes purchased by the Company from loan originators and transferred loans that previously did not meet the requirements for sale accounting. Interest income on these receivables is accrued based on the unpaid principal balances of the underlying loans on a level yield basis over the life of the loans. Interest income is not in the scope of ASC 606. Refer to Notes 4, “Collateralized Receivables and Transfers of Financial Assets” and 5, “Notes and Other Receivables” for additional information.

Broker commissions and other revenues, net - is primarily comprised of brokerage commissions for sales of manufactured homes, where we act as agent and arrange for a third-party to transfer a manufactured home to a customer within one of our communities. Brokerage commission revenues are recognized on a net basis at closing, when the transaction is completed and our performance obligations have been fulfilled. Loan loss reserve expenses for our collateralized receivables and notes receivables are also included herein. Refer to Notes 4, “Collateralized Receivables and Transfers of Financial Assets” and 5, “Notes and Other Receivables” for additional information regarding our loan loss reserves.

Contract Balances

As of September 30, 2018 and December 31, 2017, we had $19.8 million and $13.8 million, respectively, of receivables from contracts with customers. Receivables from contracts with customers are presented as a component of Notes and other receivables on our Consolidated Balance Sheets. These receivables represent balances owed to us for previously completed performance obligations for sales of manufactured homes. Due to the nature of our revenue from contacts with customers, we do not have material contract assets or liabilities that fall under the scope of ASC 606.

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Real Estate Acquisitions

9 Months Ended

Sep. 30, 2018

Business Combinations [Abstract]

Real Estate Acquisitions

Real Estate Acquisitions

2018 Acquisitions

In 2018 we acquired the following communities:

Community Name	Type	Sites	Development Sites	State	Month Acquired
Archview	RV	114	50	UT	August
Petoskey KOA	RV	210	—	MI	August
The Sands RV and Golf Resort	RV (Age Restricted)	507	—	CA	July
Sun NG RV Resorts LLC (1)	RV	2,700	940	Various	June
Silver Creek	RV	264	176	MI	June
Highway West (Four Resorts)	RV	536	—	UT & OR	June
Compass RV	RV	175	—	FL	May
	Total	4,506	1,166

⁽¹⁾ Refer to Note 8, “Consolidated Variable Interest Entities,” Note 9, “Debt and Lines of Credit,” and Note 10, “Equity and Mezzanine Securities” for additional information.

The following table summarizes the amounts of assets acquired net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2018 (in thousands):

At Acquisition Date	Archview		Petoskey KOA		Sands		Sun NG Resorts			Silver Creek		Highway West		Compass		Total
Investment in property	$	14,550	$	9,000	$	13,790	$	240,649		$	7,250	$	36,500	$	13,930	$	335,669
In-place leases and other intangible assets	—		—		460		16,339			—		—		70		16,869
Debt assumed	—		—		—		(3,120		)	—		—		—		(3,120		)
Other liabilities, net	—		—		—		(11,990		)	—		—		—		(11,990		)
Total identifiable assets acquired net of liabilities assumed	$	14,550	$	9,000	$	14,250	$	241,878		$	7,250	$	36,500	$	14,000	$	337,428
Consideration
Cash	$	14,550	$	9,000	$	14,250	$	184,625		$	7,250	$	36,500	$	14,000	$	280,175
Preferred Equity - Sun NG Resorts	—		—		—		35,277			—		—		—		35,277
Equity Interests - NG Sun LLC	—		—		—		21,976			—		—		—		21,976
Total consideration	$	14,550	$	9,000	$	14,250	$	241,878		$	7,250	$	36,500	$	14,000	$	337,428

In 2018, we acquired the following land for expansion / development:

Name	Location	Type	Expansion / Development Sites	Cost (millions)		Month Acquired
Pecan Park	Jacksonville, FL	RV	158	$	1.3	September
Smith Creek Crossing	Granby, CO	MH	310	$	0.9	September
River Run Ranch	Granby, CO	MH / RV	1,144	$	5.3	May
		Total	1,612	$	7.5

Refer to Note 18, “Subsequent Events,” for information regarding real estate acquisition activity after September 30, 2018.

The total amount of revenues and net income included in the Consolidated Statements of Operations for the three and nine months ended September 30, 2018 related to the acquisitions completed in 2018 are set forth in the following table (in thousands):

	Three Months Ended   September 30, 2018		Nine Months Ended   September 30, 2018
	(unaudited)		(unaudited)
Total revenues	$	26,317	$	33,433
Net income	$	7,529	$	11,356

The following unaudited pro forma financial information presents the results of our operations for the three and nine months ended September 30, 2018 and 2017, as if the properties acquired in 2018 had been acquired on January 1, 2017. The unaudited pro forma results reflect certain adjustments for items that are not expected to have a continuing impact, such as adjustments for transaction costs incurred, management fees, and purchase accounting.

The information presented below has been prepared for comparative purposes only and does not purport to be indicative of either future results of operations or the results of operations that would have actually occurred had the acquisition been consummated on January 1, 2017 (in thousands, except per-share data):

	Three Months Ended September 30,				Nine Months Ended September 30,
	(unaudited)				(unaudited)
	2018		2017		2018		2017
Total revenues	$	325,504	$	296,322	$	861,193	$	780,529
Net income attributable to Sun Communities, Inc. common stockholders	$	57,413	$	42,987	$	93,714	$	68,378
Net income per share attributable to Sun Communities, Inc. common stockholders - basic	$	0.70	$	0.55	$	1.17	$	0.91
Net income per share attributable to Sun Communities, Inc. common stockholders - diluted	$	0.70	$	0.55	$	1.17	$	0.90

2017 Acquisitions

In 2017, we acquired the following communities:

Community Name	Type	Sites	Development Sites	State	Month Acquired
Colony in the Wood	MH (Age Restricted)	383	—	FL	December
Emerald Coast	MH and RV	201	14	FL	November
Lazy J Ranch	MH (Age Restricted)	220	—	CA	September
Ocean West	MH (Age Restricted)	130	4	CA	September
Caliente Sands	MH (Age Restricted)	118	—	CA	September
Pismo Dunes	RV (Age Restricted)	331	—	CA	July
Arbor Woods	MH	458	—	MI	June
Sunset Lakes	RV	498	—	IL	May
49er Village	RV	328	—	CA	March
	Total	2,667	18

The following table summarizes the amounts of assets acquired net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2017 (in thousands):

At Acquisition Date	Colony in the Wood		Emerald Coast		Lazy J Ranch		Ocean West		Caliente Sands		Pismo Dunes			Arbor Woods		Sunset Lakes		49er Village		Total
Investment in property	$	31,818	$	19,400	$	13,938	$	9,453	$	8,640	$	21,260		$	15,725	$	7,835	$	12,890	$	140,959
Notes receivable	—		—		—		—		—		—			23		—		—		23
Inventory of manufactured homes	—		—		2		—		21		—			465		—		—		488
In-place leases and other intangible assets	660		100		360		220		210		660			730		210		110		3,260
Total identifiable assets acquired net of liabilities assumed	$	32,478	$	19,500	$	14,300	$	9,673	$	8,871	$	21,920		$	16,943	$	8,045	$	13,000	$	144,730
Consideration
Cash	$	32,478	$	19,500	$	14,300	$	5,081	$	8,871	$	—		$	14,943	$	8,045	$	13,000	$	116,218
Equity	—		—		—		—		—		26,410			2,000		—		—		28,410
Liabilities assumed	—		—		—		4,592		—		510			—		—		—		5,102
Cash proceeds from seller	—		—		—		—		—		(5,000		)	—		—		—		(5,000		)
Total consideration	$	32,478	$	19,500	$	14,300	$	9,673	$	8,871	$	21,920		$	16,943	$	8,045	$	13,000	$	144,730

In 2017, we acquired the following land for expansion:

Development Name	Location	Type	Development Sites	Cost (millions)		Month Acquired
Carolina Pines	Myrtle Beach, SC	RV	841	$	5.9	April
		Total	841

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Collateralized Receivables and Transfers of Financial Assets

9 Months Ended

Sep. 30, 2018

Transfers and Servicing [Abstract]

Transfers Of Financial Assets

Transfers of Financial Assets

We previously completed various transactions with an unrelated entity involving our notes receivable under which we received cash proceeds in exchange for relinquishing our right, title, and interest in certain notes receivable. We have no further obligations or rights with respect to the control, management, administration, servicing, or collection of the installment notes receivable. However, we are subject to certain recourse provisions requiring us to purchase the underlying homes collateralizing such notes, in the event of a note default and subsequent repossession of the home by the unrelated entity. The recourse provisions are considered to be a form of continuing involvement, and therefore these transferred loans did not meet the requirements for sale accounting. We continue to recognize these transferred loans on our balance sheet and refer to them as collateralized receivables. The proceeds from the transfer have been recognized as a secured borrowing.

In the event of a note default and subsequent repossession of a manufactured home by the unrelated entity, the terms of the agreement require us to repurchase the manufactured home. Default is defined as the failure to repay the installment note receivable according to contractual terms. The repurchase price is calculated as a percentage of the outstanding principal balance of the collateralized receivable, plus any outstanding late fees, accrued interest, legal fees, and escrow advances associated with the installment note receivable. The percentage used to determine the repurchase price of the outstanding principal balance on the installment note receivable is based on the number of payments made on the note. In general, the repurchase price is determined as follows:

Number of Payments	Repurchase Percentage
Fewer than or equal to 15	100	%
Greater than 15 but fewer than 64	90	%
Equal to or greater than 64 but fewer than 120	65	%
120 or more	50	%

The transferred assets have been classified as Collateralized receivables, net and the cash proceeds received from these transactions have been classified as Secured borrowings on collateralized receivables within the Consolidated Balance Sheets. The balance of the collateralized receivables was $112.2 million (net of allowance of $0.9 million) and $128.2 million (net of allowance of $0.9 million) as of September 30, 2018 and December 31, 2017, respectively. The receivables have a weighted average interest rate and maturity of 10.0 percent and 14.3 years as of September 30, 2018, and 10.0 percent and 15.3 years as of December 31, 2017.

The outstanding balance on the secured borrowing was $113.1 million and $129.2 million as of September 30, 2018 and December 31, 2017, respectively.

The collateralized receivables earn interest income, and the secured borrowings accrue interest expense at the same interest rates. The amount of interest income and expense recognized was $2.8 million and $3.3 million for the three months ended September 30, 2018 and 2017, respectively, and $8.5 million and $9.9 million for the nine months ended September 30, 2018 and 2017, respectively.

The balances of the collateralized receivables and secured borrowings are reduced as the related collateralized receivables are collected from the customers, or as the underlying collateral is repurchased. The change in the aggregate gross principal balance of the collateralized receivables is as follows (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	129,182
Principal payments and payoffs from our customers	(9,386		)
Principal reduction from repurchased homes	(6,707		)
Total activity	(16,093		)
Ending balance	$	113,089

The following table sets forth the allowance for the collateralized receivables as of September 30, 2018 (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	(936	)
Lower of cost or market write-downs	587
Increase to reserve balance	(512		)
Total activity	75
Ending balance	$	(861	)

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Notes And Other Receivables

9 Months Ended

Sep. 30, 2018

Long-term Notes and Loans, by Type, Current and Noncurrent [Abstract]

Notes And Other Receivables

Notes and Other Receivables

The following table sets forth certain information regarding notes and other receivables (in thousands):

	September 30, 2018		December 31, 2017
Installment notes receivable on manufactured homes, net	$	117,583	$	115,797
Other receivables, net	50,115		47,699
Total notes and other receivables, net	$	167,698	$	163,496

Installment Notes Receivable on Manufactured Homes

Our investment in installment notes of $117.6 million (net of allowance of $0.6 million) and $115.8 million (net of allowance of $0.4 million) as of September 30, 2018 and December 31, 2017, respectively, are collateralized by manufactured homes. The notes represent financing to purchasers of manufactured homes primarily located in our communities and require monthly principal and interest payments. The notes have a net weighted average interest rate (net of servicing costs) and maturity of 8.0 percent and 16.8 years as of September 30, 2018, and 8.2 percent and 17.2 years as of December 31, 2017, respectively.

The change in the aggregate gross principal balance of the installment notes receivable is as follows (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	116,174
Investment in installment notes	14,042
Principal payments and payoffs from customers	(6,721		)
Principal reduction from repossessed homes	(5,296		)
Total activity	2,025
Ending balance	$	118,199

Allowance for Losses for Installment Notes Receivable

The following table sets forth the allowance change for the installment notes receivable as follows (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	(377	)
Lower of cost or market write-downs	522
Increase to reserve balance	(761		)
Total activity	(239		)
Ending balance	$	(616	)

Other Receivables

As of September 30, 2018, other receivables were comprised of amounts due from: residents for rent and water and sewer usage of $7.9 million (net of allowance of $1.8 million); home sale proceeds of $19.8 million; and insurance and other receivables of $22.4 million. As of December 31, 2017, other receivables were comprised of amounts due from: residents for rent and water and sewer usage of $7.0 million (net of allowance of $1.5 million); home sale proceeds of $13.8 million; and insurance and other receivables of $26.9 million.

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Intangible Assets

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets Disclosure [Text Block]

Intangible Assets

Our intangible assets include ground leases, in-place leases, franchise agreements and other intangible assets. These intangible assets are recorded in Other assets, net on the Consolidated Balance Sheets.

In June 2018, we acquired 50 percent of a land parcel that was previously subject to a ground lease at one of our California communities for $8.0 million. As a result of the transaction, we wrote off $1.1 million of the gross carrying amount of the ground lease intangible and $0.3 million of the related accumulated amortization. The $0.8 million net write off is included within the Property operating and maintenance expenses in our Consolidated Statements of Operations for the three months ended June 30, 2018.

The gross carrying amounts, and accumulated amortization are as follows (in thousands):

		September 30, 2018					December 31, 2017
Intangible Asset	Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Ground leases	8-57 years	$	31,060	$	(1,755	)	$	32,165	$	(1,409	)
In-place leases	7 years	103,598		(55,881		)	100,843		(45,576		)
Franchise agreements and other intangible assets	7-15 years	16,521		(2,190		)	1,880		(1,451		)
Total		$	151,179	$	(59,826	)	$	134,888	$	(48,436	)

Total amortization expenses related to the intangible assets are as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Intangible Asset	2018		2017		2018		2017
Ground leases	$	188	$	257	$	633	$	771
In-place leases	3,320		3,478		10,305		10,322
Franchise agreements and other intangible assets	717		19		755		277
Total	$	4,225	$	3,754	$	11,693	$	11,370

We anticipate amortization expense for our intangible assets to be as follows for the next five years (in thousands):

	Year
	Remainder of 2018		2019		2020		2021		2022
Estimated expense	$	4,055	$	15,960	$	14,232	$	13,840	$	9,239

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Investment In Affiliates

9 Months Ended

Sep. 30, 2018

Equity Method Investments and Joint Ventures [Abstract]

Investment In Affiliates

Investment in Affiliates

GTSC LLC (“GTSC”)

In February 2018, the Company became a noncontrolling member of GTSC. GTSC engages in acquiring, holding and selling loans secured, directly or indirectly, by manufactured homes located in communities of Sun Communities. At September 30, 2018, we had a 40 percent ownership interest in GTSC. The remaining 60 percent interest is owned by an unrelated third-party. We account for our interest in GTSC under the equity method of accounting as prescribed by FASB ASC Topic 323 “Investments - Equity Method and Joint Ventures.” Based on the power and economics criteria under the variable interest entity (“VIE”) model in ASC 810, we are not the primary beneficiary of GTSC. During the three and nine months ended September 30, 2018, there was $0.1 million net gain in Brokerage commissions and other revenues, net respectively on the Consolidated Statement of Operations related to our ownership interest. Our investment in GTSC as of September 30, 2018, is $19.9 million and recorded within Other assets, net on the Consolidated Balance Sheet.

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Consolidated Variable Interest Entities

9 Months Ended

Sep. 30, 2018

DisclosureofVariableInterestEntities [Abstract]

Consolidated Variable Interest Entities

   Consolidated Variable Interest Entities

Effective June 1, 2018, the Company acquired a majority interest in Sun NG RV Resorts LLC (“Sun NG Resorts”), which is comprised of ten RV resorts and one ground up RV development with 2,700 RV sites and an additional 940 sites available for development. The Company purchased an 80 percent interest in Sun NG Resorts for $61.6 million through Sun NG LLC; the remaining 20 percent interest of $15.4 million is held by NG Sun LLC, an unrelated third-party. Sun paid additional consideration of $123.3 million, consisting of a $1.8 million preferred equity investment and a $121.5 million temporary loan to Sun NG Resorts.

We consolidate Sun NG Resorts under the guidance set forth in FASB ASC Topic 810 “Consolidation.” We concluded that Sun NG Resorts is a variable interest entity where we are the primary beneficiary, as we have power to direct the significant activities, absorb the significant losses and receive the significant benefits from the entity. Refer to Note 3, “Real Estate Acquisitions,” Note 9, “Debt and Lines of Credit,” and Note 10, “Equity and Mezzanine Securities” for additional information.

We consolidate Rudgate Village SPE, LLC; Rudgate Clinton SPE, LLC; and Rudgate Clinton Estates SPE, LLC (collectively, “Rudgate”) as a VIE. We evaluated our arrangement with this property under the guidance set forth in FASB ASC Topic 810 “Consolidation.” We concluded that Rudgate qualified as a VIE where we are the primary beneficiary, as we have power to direct the significant activities, absorb the significant losses and receive the significant benefits from the entity.

The following table summarizes the assets and liabilities included in our Consolidated Balance Sheets after eliminations (in thousands):

	September 30, 2018		December 31, 2017
ASSETS
Investment property, net	$	300,693	$	50,193
Other assets, net	20,655		1,659
TOTAL ASSETS	$	321,348	$	51,852
LIABILITIES AND STOCKHOLDERS’ EQUITY
Debt	$	44,426	$	41,970
Preferred Equity - Sun NG Resorts - mandatorily redeemable	35,277		—
Other liabilities	7,434		1,468
TOTAL LIABILITIES	87,137		43,438
Equity Interests - NG Sun LLC	21,976		—
Noncontrolling interests	7,544		4,285
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	116,657	$	47,723

Investment property, net and other assets, net related to the consolidated VIEs comprised approximately 4.8 percent and 0.8 percent of our consolidated total assets at September 30, 2018 and December 31, 2017, respectively. Debt, Preferred Equity and other liabilities comprised approximately 2.6 percent and 1.2 percent of our consolidated total liabilities at September 30, 2018 and December 31, 2017, respectively. Equity Interests and Noncontrolling interests related to the consolidated VIEs, on an absolute basis, comprised less than 1.0 percent of our consolidated total equity at September 30, 2018 and at December 31, 2017.

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Debt And Lines Of Credit

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Debt Disclosure [Text Block]

Debt and Lines of Credit

The following table sets forth certain information regarding debt including premiums, discounts and deferred financing costs (in thousands):

	Carrying Amount				Weighted Average Years to Maturity		Weighted Average Interest Rates
	September 30, 2018		December 31, 2017		September 30, 2018	December 31, 2017	September 30, 2018		December 31, 2017
Collateralized term loans - Life Companies	$	1,253,935	$	1,044,246	14.4	13.9	4.0	%	3.9	%
Collateralized term loans - FNMA	775,383		1,026,014		5.4	5.6	4.4	%	4.4	%
Collateralized term loans - CMBS	407,778		410,747		4.3	5.0	5.1	%	5.1	%
Collateralized term loans - FMCC	382,129		386,349		6.1	6.9	3.9	%	3.9	%
Secured borrowings	113,089		129,182		14.6	15.3	10.0	%	10.0	%
Lines of credit	—		41,257		0.0	3.1	—	%	2.8	%
Preferred Equity - Sun NG Resorts - mandatorily redeemable	35,277		—		4.0	-	6.0	%	—	%
Preferred OP units - mandatorily redeemable	37,338		41,443		4.9	5.0	6.6	%	6.7	%
Total debt	$	3,004,929	$	3,079,238	9.4	8.9	4.5	%	4.5	%

Collateralized Term Loans

During the three months ended September 30, 2018, we entered into a $228.0 million collateralized term loan with a 4.10 percent fixed rate and a 20-year term.

During the three months ended September 30, 2018, we repaid one collateralized term loan of $30.5 million with an interest rate of 6.34 percent, releasing one encumbered community, which was due to mature March 1, 2019. We recognized a loss on extinguishment of debt of $0.3 million as a result of the repayment transaction in our Consolidated Statement of Operations.

During the three months ended June 30, 2018 we repaid three collateralized term loans totaling $177.7 million with a weighted average interest rate of 4.53 percent, releasing 11 encumbered communities. One loan was due to mature on August 1, 2018 and two loans were due to mature on May 1, 2023. We recognized a loss on extinguishment of debt of $1.5 million as a result of the repayment transaction.

During the three months ended March 31, 2018, we repaid four collateralized term loans totaling $24.4 million with a weighted average interest rate of 6.36 percent, releasing three encumbered communities. The loans were due to mature on March 1, 2019. We recognized a loss on extinguishment of debt of $0.2 million as a result of the repayment transactions.

In December 2017, we defeased a $38.6 million collateralized term loan with a 5.25 percent fixed interest rate that was due to mature on June 1, 2022. As a result of the transaction we recognized a loss on extinguishment of debt of $5.2 million in our Consolidated Statements of Operations. Concurrent with the defeasance, we entered into a new $100.0 million collateralized term loan, encumbered by the same property, with a 4.25 percent fixed rate of interest and 30-year term.

In September 2017, in connection with the Ocean West acquisition, we assumed a $4.6 million collateralized term loan with Fannie Mae, with an interest rate of 4.34 percent and a remaining term of 9.8 years.

In June 2017, we entered into a $77.0 million collateralized term loan which bears interest at a rate of 4.16 percent amortizing over a 25-year term. We also repaid a $3.9 million collateralized term loan with an interest rate of 6.54 percent that was due to mature on August 31, 2017. As a result of the repayment transaction, we recognized a loss on extinguishment of debt of $0.3 million in our Consolidated Statements of Operations.

During the first quarter of 2017, we defeased an $18.9 million collateralized term loan with an interest rate of 6.49 percent that was due to mature on August 1, 2017, releasing one encumbered community. As a result of the transaction, we recognized a loss on extinguishment of debt of $0.5 million in our Consolidated Statements of Operations. In addition, we repaid a $10.0 million collateralized term loan with an interest rate of 5.57 percent that was due to mature on May 1, 2017, releasing an additional encumbered community.

The collateralized term loans totaling $2.8 billion as of September 30, 2018, are secured by 185 properties comprised of 72,620 sites representing approximately $3.2 billion of net book value.

Secured Borrowing

See Note 4, “Collateralized Receivables and Transfers of Financial Assets,” for information regarding our collateralized receivables and secured borrowing transactions.

Preferred OP Units

Preferred OP units at September 30, 2018 and December 31, 2017 include $34.7 million of Aspen preferred OP units issued by the Operating Partnership. As of September 30, 2018, these units are convertible indirectly into 447,674 shares of our common stock. Subject to certain limitations, at any time prior to January 1, 2024, the holder of each Aspen preferred OP unit at its option may convert such Aspen preferred OP unit into: (a) if the market price of our common stock is $68.00 per share or less, 0.397 common OP units; or (b) if the market price of our common stock is greater than $68.00 per share, the number of common OP units is determined by dividing (i) the sum of (A) $27.00 plus (B) 25 percent of the amount by which the market price of our common stock exceeds $68.00 per share, by (ii) the per share market price of our common stock. The current preferred distribution rate is 6.5 percent. On January 2, 2024, we are required to redeem all Aspen preferred OP units that have not been converted to common OP units.

Preferred OP units also include $2.7 million and $6.7 million at September 30, 2018 and December 31, 2017, respectively, of Series B-3 preferred OP units, which are not convertible. During the nine months ended September 30, 2018, we redeemed 41,051 of the Series B-3 preferred OP units at an average redemption price per unit, which included accrued and unpaid distributions, of $100.065753. In the aggregate, we paid $4.1 million to redeem these units.

Subject to certain limitations, (a) during the 90-day period beginning on each of the tenth through fifteenth anniversaries of the issue date of the applicable Series B-3 preferred OP units, (b) at any time after the fifteenth anniversary of the issue date of the applicable Series B-3 preferred OP units, or (c) after our receipt of notice of the death of the electing holder of a Series B-3 preferred OP unit, each holder of Series B-3 preferred OP units may require us to redeem such holder's Series B-3 preferred OP units at the redemption price of $100.00 per unit. In addition, at any time after the fifteenth anniversary of the issue date of the applicable Series B-3 preferred OP units we may redeem, at our option, all of the Series B-3 preferred OP units of any holder thereof at the redemption price of $100.00 per unit.

Preferred Equity - Sun NG Resorts - mandatorily redeemable

In June 2018, in connection with the investment in Sun NG Resorts, $35.3 million of mandatorily redeemable Preferred Equity (“Preferred Equity - Sun NG Resorts”) was purchased by unrelated third parties. The Preferred Equity - Sun NG Resorts carries a preferred rate of return of 6.0 percent per annum. The Preferred Equity - Sun NG Resorts has a seven-year term and can be redeemed in the fourth quarter of 2022 at the holders’ option. The Preferred Equity - Sun NG Resorts as of September 30, 2018 was $35.3 million. Refer to Note 3, “Real Estate Acquisitions,” Note 8, “Consolidated Variable Interest Entities,” and Note 10, “Equity and Mezzanine Securities” for additional information.

Lines of Credit

In April 2017, we amended and restated our credit agreement (the “A&R Credit Agreement”) with Citibank, N.A. (“Citibank”) and certain other lenders. Pursuant to the A&R Credit Agreement, we entered into a senior revolving credit facility with Citibank and certain other lenders in the amount of $650.0 million, comprised of a $550.0 million revolving loan and a $100.0 million term loan (the “A&R Facility”). We repaid the term loan in full on September 7, 2018.The A&R Credit Agreement has a four-year term ending April 25, 2021, which can be extended for two additional six-month periods at our option, subject to the satisfaction of certain conditions as defined in the credit agreement. The A&R Credit Agreement also provides for, subject to the satisfaction of certain conditions, additional commitments in an amount not to exceed $350.0 million. If additional borrowings are made pursuant to any such additional commitments, the aggregate borrowing limit under the A&R Facility may be increased up to $900.0 million.

The A&R Facility bears interest at a floating rate based on the Eurodollar rate plus a margin that is determined based on our leverage ratio calculated in accordance with the A&R Credit Agreement, which margin can range from 1.35 percent to 2.20 percent for the revolving loan and could range from 1.30 percent to 2.15 percent for the term loan. As of September 30, 2018, the margin based on our leverage ratio was 1.35 percent and 1.30 percent on the revolving and term loans, respectively. We had no borrowings on the revolving loan and no borrowings on the term loan as of September 30, 2018.

The A&R Facility provides us with the ability to issue letters of credit. Our issuance of letters of credit does not increase our borrowings outstanding under our line of credit, but does reduce the borrowing amount available. At September 30, 2018 and December 31, 2017, approximately $4.2 million and $1.3 million, respectively, of availability was used to back standby letters of credit.

We have a $12.0 million manufactured home floor plan facility renewable indefinitely until our lender provides us at least a twelve month notice of their intent to terminate the agreement. The interest rate is 100 basis points over the greater of the prime rate as quoted in the Wall Street Journal on the first business day of each month or 6.0 percent. At September 30, 2018, the effective interest rate was 7.0 percent. The outstanding balance was zero as of September 30, 2018 and $4.0 million as of December 31, 2017.

Covenants

Pursuant to the terms of the A&R Facility, we are subject to various financial and other covenants. The most restrictive of our debt agreements place limitations on secured borrowings and contain minimum fixed charge coverage, leverage, distribution, and net worth requirements. At September 30, 2018, we were in compliance with all covenants.

In addition, certain of our subsidiary borrowers own properties that secure loans. These subsidiaries are consolidated within our accompanying Consolidated Financial Statements, however, each of these subsidiaries’ assets and credit are not available to satisfy the debts and other obligations of the Company, any of its other subsidiaries or any other person or entity.

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Equity and Mezzanine Securities

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Equity and Mezzanine Securities

Equity and Mezzanine Securities

Public Equity Offerings

In September 2018, we closed an underwritten registered public offering of 5,060,000 shares of common stock. Proceeds from the offering were $499.9 million after deducting expenses related to the offering. We used the net proceeds of this offering to repay borrowings under the revolving loan and the term loan under our senior credit facility. The Company intends to use the remaining net proceeds of this offering to fund possible future acquisitions and for working capital and general corporate purposes.

In May 2017, we closed an underwritten registered public offering of 4,830,000 shares of common stock. Proceeds from the offering were $408.9 million after deducting expenses related to the offering, which were used to repay borrowings outstanding under the revolving loan under our A&R Facility, fund acquisitions, working capital and general corporate purposes.

At the Market Offering Sales Agreement

In July 2017, we entered into a new at the market offering sales agreement (the “Sales Agreement”) with BMO Capital Markets Corp., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc., Robert W. Baird & Co. Incorporated, Fifth Third Securities, Inc., RBC Capital Markets, LLC, BTIG, LLC, Jefferies LLC, Credit Suisse Securities (USA) LLC and Samuel A. Ramirez & Company, Inc. (each, a “Sales Agent;” collectively, the “Sales Agents”), whereby we may offer and sell shares of our common stock, having an aggregate offering price of up to $450.0 million, from time to time through the Sales Agents. The Sales Agents are entitled to compensation in an agreed amount not to exceed 2.0 percent of the gross price per share for any shares sold from time to time under the Sales Agreement. Through September 30, 2018, we have sold shares of our common stock for gross proceeds of $163.8 million under the Sales Agreement.

Issuances of common stock under the Sales Agreement during 2018 were as follows:

Year to Date	Common Stock Issued	Weighted Average Sales Price		Net Proceeds (in Millions)
September 30, 2018	1,407,215	$	95.02	$	132.0

Equity Interests - NG Sun LLC

In June 2018, in connection with the investment in Sun NG Resorts, unrelated third parties purchased $6.5 million of Series B preferred equity interests and $15.4 million of common equity interest (herein jointly referred to as “Equity Interest - NG Sun LLC”). The Series B preferred equity interests carry a preferred return at a rate that, at any time, is equal to the interest rate on Sun NG Resorts indebtedness at such time. The current rate of return is 5.0 percent. The Equity Interests - NG Sun LLC do not have a fixed maturity date and can be redeemed in the fourth quarter of 2022 at the holders option. Sun NG LLC, our subsidiary, has the right during certain periods each year, with or without cause, or for cause at any time, to elect to buy NG Sun LLC’s interest.  During a limited period in 2022, NG Sun LLC has the right to put its interest to Sun NG LLC.  If either party exercises their option, the property management agreement will be terminated and the Company is required to purchase the remaining interests of NG Sun LLC and the property management agreement at fair value. Refer to Note 3, “Real Estate Acquisitions,” Note 8, “Consolidated Variable Interest Entities,” and Note 9, “Debt and Lines of Credit” for additional information.

Issuance of Common Stock and Common OP Units

In July 2017, we issued 298,900 shares of common stock totaling $26.4 million in connection with the acquisition of Pismo Dunes.

In June 2017, we issued a total of 23,311 common OP units for total consideration of $2.0 million in connection with acquisition activity during the three months ended June 30, 2017.

Conversions

Subject to certain limitations, holders can convert certain series of stock and OP units to shares of our common stock at any time. Below is the activity of conversions during the nine months ended September 30, 2018 and 2017:

		Nine Months Ended   September 30, 2018		Nine Months Ended   September 30, 2017
Series	Conversion Rate	Units/Shares Converted	Common Stock	Units/Shares Converted	Common Stock
Common OP unit	1	16,908	16,908	25,238	25,238
Series A-1 preferred OP unit	2.439	13,100	31,948	18,319	44,676
Series A-4 preferred OP unit	0.4444	13,765	6,116	9,000	3,996
Series A-4 preferred stock	0.4444	22,576	10,033	158,036	70,238
Series C preferred OP unit	1.11	1,919	2,130	16,806	18,651

Cash Distributions

Cash Distributions for the three months ended September 30, 2018 were as follows:

Cash Distributions	Record Date	Payment Date	Distribution per Share		Total Distribution (thousands)
Common Stock, Common OP units and Restricted Stock	9/28/2018	10/15/2018	$	0.71	$	63,250
Series A-4 Preferred Stock	9/14/2018	10/1/2018	$	0.40625	$	432

Redemptions

If certain change of control transactions occur or if our common stock ceases to be listed or quoted on an exchange or quotation system, then at any time after November 26, 2019, we or the holders of shares of Series A-4 preferred stock and Series A-4 preferred OP units may cause all or any of those shares or units to be redeemed for cash at a redemption price equal to the sum of (i) the greater of (x) the amount that the redeemed shares of Series A-4 preferred stock and Series A-4 preferred OP units would have received in such transaction if they had been converted into shares of our common stock immediately prior to such transaction, or (y) $25.00 per share, plus (ii) any accrued and unpaid distributions thereon to, but not including, the redemption date.

In November 2017, we redeemed all of the outstanding shares of our 7.125% Series A Cumulative Redeemable Preferred Stock. Holders received a cash payment of $25.14349 per share which included accrued and unpaid dividends. In the aggregate, we paid $85.5 million to redeem all of the 3,400,000 outstanding shares.

In June 2017, we redeemed 438,448 shares of Series A-4 Preferred Stock and 200,000 shares of Series A-4 preferred OP units from Green Courte Real Estate Partners III, LLC, GCP Fund III REIT LLC and GCP Fund III Ancillary Holding, LLC (collectively, the “Green Courte Entities”) for total consideration of $24.7 million. Accrued dividends totaling $0.2 million were also paid in connection with the redemptions. The Green Courte Entities were the sellers of the American Land Lease portfolio which we acquired in 2014 and 2015.

Repurchase Program

In November 2004, our Board of Directors authorized us to repurchase up to 1,000,000 shares of our common stock. We have 400,000 common shares remaining in the repurchase program as of September 30, 2018. No common shares were repurchased during the nine months ended September 30, 2018 or 2017. There is no expiration date specified for the buyback program.

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Share-Based Compensation

9 Months Ended

Sep. 30, 2018

Share-based Compensation [Abstract]

Share-Based Compensation

Share-Based Compensation

As of September 30, 2018, we had two share-based compensation plans; the Sun Communities, Inc. 2015 Equity Incentive Plan (“2015 Equity Incentive Plan”) and the First Amended and Restated 2004 Non-Employee Director Option Plan (“2004 Non-Employee Director Option Plan”). We believe granting equity awards will provide certain executives, key employees and directors additional incentives to promote our financial success, and promote employee and director retention by providing an opportunity to acquire or increase the direct proprietary interest of those individuals in our operations and future.

The following table shows details on grants of equity awards during the nine months ended September 30, 2018:

Grant Period	Type	Plan	Shares Granted	Grant Date Fair Value Per Share			Vesting Type	Vesting Anniversary	Percentage
2018	Key Employees	2015 Equity Incentive Plan	16,500	$	88.30	(1)	Time Based	2nd	35.0	%
								3rd	35.0	%
								4th	20.0	%
								5th	5.0	%
								6th	5.0	%
2018	Key Employees	2015 Equity Incentive Plan	47,600	$	86.22	(1)	Time Based	20.0% annually over 5 years
2018	Executive Officers	2015 Equity Incentive Plan	60,000	$	87.24	(2)	Time Based	20.0% annually over 5 years
2018	Executive Officers	2015 Equity Incentive Plan	90,000	$	65.24	(3)	Market Condition	3rd	100.0	%
2018	Directors	2004 Non-Employee Director Option Plan	16,800	$	85.28	(2)	Time Based	3rd	100.0	%

⁽¹⁾ The fair value of the grants were determined by using the average closing price of our common stock on the dates the shares were issued.

⁽²⁾ The fair value of the grants were determined by using the closing price of our common stock on the dates the shares were issued.

⁽³⁾ Share-based compensation for restricted stock awards with market conditions is measured based on an estimate of shares expected to vest. We estimate the fair value of share-based compensation for restricted stock with market conditions using a Monte Carlo simulation. At the grant date ,our common stock price was $87.24. Based on the Monte Carlo simulation we expect 74.8% of the 90,000 shares to vest.

Vesting

The vesting requirements for 202,368 restricted shares granted to our executives, directors and employees were satisfied during the nine months ended September 30, 2018.

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Segment Reporting

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting

We group our operating segments into reportable segments that provide similar products and services. Each operating segment has discrete financial information evaluated regularly by our chief operating decision maker in evaluating and assessing performance. We have two reportable segments: (i) Real Property Operations and (ii) Home Sales and Rentals. The Real Property Operations segment owns, operates, develops, or has an interest in a portfolio of MH and RV communities, and is in the business of acquiring, operating, and expanding MH and RV communities. The Home Sales and Rentals segment offers MH and RV park model sales and leasing services to tenants and prospective tenants of our communities.

Transactions between our segments are eliminated in consolidation. Transient RV revenue is included in the Real Property Operations segment revenues and is expected to approximate $107.6 million annually. Transient RV revenue was recognized 20.4 percent, 20.1 percent, and 42.0 percent in the first, second, and third quarters, respectively, and is expected to be 17.5 percent in the fourth quarter. Transient revenue was $78.0 million for the year ended December 31, 2017. We recognized 27.2 percent in the first quarter, 20.1 percent in the second quarter, 36.9 percent in the third quarter, and 15.8 percent in the fourth quarter.

A presentation of segment financial information is summarized as follows (in thousands):

	Three Months Ended September 30, 2018									Three Months Ended September 30, 2017
	Real Property Operations			Home Sales and Rentals			Consolidated			Real Property Operations			Home Sales and Rentals			Consolidated
Revenues	$	257,215		$	59,720		$	316,935		$	215,280		$	45,954		$	261,234
Operating expenses/Cost of sales	101,258			39,831			141,089			82,388			31,869			114,257
Net operating income/Gross profit	155,957			19,889			175,846			132,892			14,085			146,977
Adjustments to arrive at net income / (loss):
Interest and other revenues, net	6,603			—			6,603			7,011			—			7,011
Home selling expenses	—			(4,043		)	(4,043		)	—			(3,290		)	(3,290		)
General and administrative	(17,187		)	(2,940		)	(20,127		)	(15,677		)	(2,497		)	(18,174		)
Transaction costs	(24		)	—			(24		)	(2,153		)	(14		)	(2,167		)
Depreciation and amortization	(54,305		)	(17,677		)	(71,982		)	(48,624		)	(15,608		)	(64,232		)
Loss on extinguishment of debt	(939		)	—			(939		)	—			—			—
Interest	(33,516		)	(5		)	(33,521		)	(32,082		)	(3		)	(32,085		)
Interest on mandatorily redeemable preferred OP units / equity	(1,142		)	—			(1,142		)	(790		)	—			(790		)
Catastrophic weather related charges, net	(173		)	—			(173		)	(7,718		)	(38		)	(7,756		)
Other income, net	1,230			1			1,231			3,345			—			3,345
Current tax (expense) / benefit	(135		)	(78		)	(213		)	210			(172		)	38
Deferred tax benefit	199			—			199			81			—			81
Net income / (loss)	56,568			(4,853		)	51,715			36,495			(7,537		)	28,958
Less:  Preferred return to preferred OP units	1,152			—			1,152			1,112			—			1,112
Less:  Amounts attributable to noncontrolling interests	4,304			(233		)	4,071			2,169			(393		)	1,776
Net income / (loss) attributable to Sun Communities, Inc.	51,112			(4,620		)	46,492			33,214			(7,144		)	26,070
Less: Preferred stock distributions	432			—			432			1,955			—			1,955
Net income / (loss) attributable to Sun Communities, Inc. common stockholders	$	50,680		$	(4,620	)	$	46,060		$	31,259		$	(7,144	)	$	24,115

	Nine Months Ended September 30, 2018									Nine Months Ended September 30, 2017
	Real Property Operations			Home Sales and Rentals			Consolidated			Real Property Operations			Home Sales and Rentals			Consolidated
Revenues	$	671,695		$	162,205		$	833,900		592,864			129,093			$	721,957
Operating expenses/Cost of sales	253,009			107,772			360,781			221,178			84,820			305,998
Net operating income/Gross profit	418,686			54,433			473,119			371,686			44,273			415,959
Adjustments to arrive at net income / (loss):
Interest and other revenues, net	18,980			—			18,980			18,587			—			18,587
Home selling expenses	—			(11,319		)	(11,319		)	—			(9,391		)	(9,391		)
General and administrative	(52,966		)	(8,466		)	(61,432		)	(49,082		)	(6,830		)	(55,912		)
Transaction costs	(138		)	—			(138		)	(7,001		)	11			(6,990		)
Depreciation and amortization	(155,624		)	(50,568		)	(206,192		)	(144,143		)	(45,576		)	(189,719		)
Loss on extinguishment of debt	(2,657		)	—			(2,657		)	(759		)	—			(759		)
Interest	(96,904		)	(15		)	(96,919		)	(95,754		)	(11		)	(95,765		)
Interest on mandatorily redeemable preferred OP units / equity	(2,551		)	—			(2,551		)	(2,361		)	—			(2,361		)
Catastrophic weather related charges, net	2,206			(219		)	1,987			(8,075		)	(49		)	(8,124		)
Other (expense) / income, net	(3,215		)	1			(3,214		)	5,341			(1		)	5,340
Current tax (expense) / income	(366		)	(246		)	(612		)	145			(278		)	(133		)
Deferred tax benefit	434			—			434			745			—			745
Net income / (loss)	125,885			(16,399		)	109,486			89,329			(17,852		)	71,477
Less:  Preferred return to preferred OP units	3,335			—			3,335			3,482			—			3,482
Less:  Amounts attributable to noncontrolling interests	9,204			(812		)	8,392			5,148			(969		)	4,179
Net income / (loss) attributable to Sun Communities, Inc.	113,346			(15,587		)	97,759			80,699			(16,883		)	63,816
Less: Preferred stock distributions	1,305			—			1,305			6,233			—			6,233
Net income / (loss) attributable to Sun Communities, Inc. common stockholders	$	112,041		$	(15,587	)	$	96,454		$	74,466		$	(16,883	)	$	57,583

	September 30, 2018						December 31, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations			Home Sales and Rentals		Consolidated
Identifiable assets:
Investment property, net	$	5,534,397	$	519,580	$	6,053,977	$	5,172,521		$	472,833	$	5,645,354
Cash and cash equivalents	86,857		26,699		113,556		(7,649		)	17,776		10,127
Inventory of manufactured homes	—		41,030		41,030		—			30,430		30,430
Notes and other receivables, net	149,564		18,134		167,698		149,798			13,698		163,496
Collateralized receivables, net	112,228		—		112,228		128,246			—		128,246
Other assets, net	138,451		26,786		165,237		130,455			3,849		134,304
Total assets	$	6,021,497	$	632,229	$	6,653,726	$	5,573,371		$	538,586	$	6,111,957

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Income Taxes

9 Months Ended

Sep. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

We have elected to be taxed as a real estate investment trust (“REIT”) pursuant to Section 856(c) of the Internal Revenue Code of 1986, as amended (“Code”). In order for us to qualify as a REIT, at least 95 percent of our gross income in any year must be derived from qualifying sources. In addition, a REIT must distribute annually at least 90 percent of its REIT taxable income (calculated without any deduction for dividends paid and excluding capital gain) to its stockholders and meet other tests.

Qualification as a REIT involves the satisfaction of numerous requirements (on an annual and quarterly basis) established under highly technical and complex Code provisions for which there are limited judicial or administrative interpretations, and involves the determination of various factual matters and circumstances not entirely within our control. In addition, frequent changes occur in the area of REIT taxation which requires us to continually monitor our tax status. We analyzed the various REIT tests and confirmed that we continued to qualify as a REIT for the quarter ended September 30, 2018.

As a REIT, we generally will not be subject to United States (“U.S.”) federal income taxes at the corporate level on the ordinary taxable income we distribute to our stockholders as dividends. If we fail to qualify as a REIT in any taxable year, our taxable income could be subject to U.S. federal income tax at regular corporate rates (including any applicable alternative minimum tax). Even if we qualify as a REIT, we may be subject to certain state and local income taxes as well as U.S. federal income and excise taxes on our undistributed income. In addition, taxable income from non-REIT activities managed through taxable REIT subsidiaries is subject to federal, state, and local income taxes. The Company is also subject to local income taxes in Canada as a result of the acquisition of Carefree in 2016. We do not provide for withholding taxes on our undistributed earnings from our Canadian subsidiaries as they are reinvested and will continue to be reinvested indefinitely outside of the U.S.

Our taxable REIT subsidiaries are subject to U.S. federal income taxes as well as state and local income and franchise taxes. In addition, our Canadian subsidiaries are subject to income tax in Canada.

Deferred tax assets and liabilities reflect the impact of temporary differences between the amounts of assets and liabilities for financial reporting purposes and the bases of such assets and liabilities as measured by tax laws. Deferred tax assets are reduced, if necessary, by a valuation allowance to the amount where realization is more likely than not assured after considering all available evidence. Our temporary differences primarily relate to net operating loss carryforwards, depreciation and basis differences between tax and U.S. GAAP on our Canadian investments. Generally, full valuation allowances are recorded against almost all U.S. federal deferred tax assets. Deferred tax liabilities of $21.3 million for Canadian entities have been recorded in relation to corporate entities and included in “Other liabilities” in our Consolidated Balance Sheets as of September 30, 2018. There are no U.S. federal deferred tax assets or liabilities included in our Consolidated Balance sheets as of September 30, 2018 and December 31, 2017.

Our deferred tax assets that have a full valuation allowance relate to our taxable REIT subsidiary (“TRS”) business which has historically produced losses. While at this time, we have evidence that our TRS business may shift to profitability, we have not achieved a sustained historical profitability that would, in our judgment, support a release of the full valuation allowance at September 30, 2018.

We had no unrecognized tax benefits as of September 30, 2018 and 2017. We do not expect significant changes in tax positions that would result in unrecognized tax benefits within one year of September 30, 2018.

We recorded a current tax expense for federal, state, and Canadian income taxes of $0.2 million for the three months ended September 30, 2018 and a current tax benefit of approximately $0.1 million for the three months ended September 30, 2017. For the nine months ended September 30, 2018 and 2017, we recorded a current tax expense of $0.6 million and $0.1 million, respectively.

For the three months ended September 30, 2018 and 2017, we recorded a deferred tax benefit of $0.2 million and $0.1 million, respectively. For the nine months ended September 30, 2018 and 2017, we recorded a deferred tax benefit of $0.4 million and $0.7 million, respectively.

In 2017, SHS underwent an audit by the Internal Revenue Service for the 2015 tax year. Upon conclusion of the audit in 2018, no adjustment was required.

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Earnings Per Share

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

We have outstanding stock options, unvested restricted common shares, and Series A-4 Preferred Stock, and our Operating Partnership has: outstanding common OP units; Series A-1 preferred OP units; Series A-3 preferred OP units; Series A-4 preferred OP units; Series C preferred OP units; and Aspen preferred OP Units, which, if converted or exercised, may impact dilution.

Computations of basic and diluted earnings per share were as follows (in thousands, except per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
Numerator	2018			2017			2018			2017
Net income attributable to common stockholders	$	46,060		$	24,115		$	96,454		$	57,583
Allocation to restricted stock awards	(396		)	(189		)	(830		)	(461		)
Basic earnings: Net income attributable to common stockholders after allocation	45,664			23,926			95,624			57,122
Allocation to restricted stock awards	396			189			—			461
Diluted earnings: Net income attributable to common stockholders after allocation	$	46,060		$	24,115		$	95,624		$	57,583
Denominator
Weighted average common shares outstanding	81,599			78,369			80,022			75,234
Add: dilutive stock options	2			2			2			2
Add: dilutive restricted stock	480			437			—			610
Diluted weighted average common shares and securities	82,081			78,808			80,024			75,846
Earnings per share available to common stockholders after allocation:
Basic	$	0.56		$	0.31		$	1.19		$	0.76
Diluted	$	0.56		$	0.31		$	1.19		$	0.76

We have excluded certain convertible securities from the computation of diluted earnings per share because the inclusion of these securities would have been anti-dilutive for the periods presented. The following table presents the outstanding securities that were excluded from the computation of diluted earnings per share as of September 30, 2018 and 2017 (in thousands):

	As of September 30,
	2018	2017
Common OP units	2,729	2,757
Series A-1 preferred OP units	332	349
Series A-3 preferred OP units	40	40
Series A-4 preferred OP units	410	425
Series A-4 preferred stock	1,063	1,085
Series C preferred OP units	314	316
Aspen preferred OP units	1,284	1,284
Total securities	6,172	6,256

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Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Of Financial Instruments

Fair Value of Financial Instruments

Our financial instruments consist primarily of cash and cash equivalents, accounts and notes receivable, accounts payable, derivative instruments, and debt.

ASC Topic 820 “Fair Value Measurements and Disclosures,” requires disclosure regarding determination of fair value for assets and liabilities and establishes a hierarchy under which these assets and liabilities must be grouped, based on significant levels of observable or unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumption. This hierarchy requires the use of observable market data when available. These two types of inputs have created the following fair value hierarchy:

Level 1—Quoted unadjusted prices for identical instruments in active markets;

Level 2—Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and

Level 3—Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.

We utilize fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The following methods and assumptions were used in order to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

Installment Notes Receivable on Manufactured Homes

The net carrying value of the installment notes receivable on manufactured homes estimates the fair value as the interest rates in the portfolio are comparable to current prevailing market rates (Level 2). Refer to Note 5, “Notes and Other Receivables.”

Long-Term Debt and Lines of Credit

The fair value of long-term debt (excluding the secured borrowing) is based on the estimates of management and on rates currently quoted, rates currently prevailing for comparable loans, and instruments of comparable maturities (Level 2). Refer to Note 9, “Debt and Lines of Credit.”

Collateralized Receivables and Secured Borrowings

The fair value of these financial instruments offset each other as our collateralized receivables represent a transfer of financial assets and the cash proceeds received from these transactions have been classified as a secured borrowing on the Consolidated Balance Sheets. The net carrying value of the collateralized receivables estimates the fair value as the interest rates in the portfolio are comparable to current prevailing market rates (Level 2). Refer to Note 4, “Collateralized Receivables and Transfers of Financial Assets.”

Financial Liabilities

We estimate the fair value of our contingent consideration liability based on discounting of future cash flows using market interest rates and adjusting for non-performance risk over the remaining term of the liability (Level 2).

Other Financial Instruments

The carrying values of cash and cash equivalents, accounts receivable, and accounts payable approximate their fair market values due to the short-term nature of these instruments.

The table below sets forth our financial assets and liabilities that required disclosure of fair value on a recurring basis as of September 30, 2018. The table presents the carrying values and fair values of our financial instruments as of September 30, 2018 and December 31, 2017, that were measured using the valuation techniques described above (in thousands). The table excludes other financial instruments such as cash and cash equivalents, accounts receivable, and accounts payable as the carrying values associated with these instruments approximate fair value since their maturities are less than one year.

	September 30, 2018				December 31, 2017
Financial assets	Carrying Value		Fair Value		Carrying Value		Fair Value
Installment notes receivable on manufactured homes, net	$	117,583	$	117,583	$	115,797	$	115,797
Collateralized receivables, net	$	112,228	$	112,228	$	128,246	$	128,246
Financial liabilities
Debt (excluding secured borrowings)	$	2,891,840	$	2,798,537	$	2,908,799	$	2,726,770
Secured borrowings	$	113,089	$	113,089	$	129,182	$	129,182
Lines of credit	$	—	$	—	$	41,257	$	41,257
Other liabilities (contingent consideration)	$	7,261	$	7,261	$	6,976	$	6,976

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Recent Accounting Pronouncements

9 Months Ended

Sep. 30, 2018

Accounting Changes and Error Corrections [Abstract]

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Recent Accounting Pronouncements - Adopted

On January 1, 2018, we adopted ASU 2014-09 “Revenue from Contracts with Customers (Topic 606).” Refer to Note 2, “Revenue” for information regarding our adoption of this guidance.

On January 1, 2018 we adopted ASU 2017-09 “Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting.” This update provided clarity and reduced both diversity in practice and cost and complexity when applying the guidance in Topic 718, Compensation - Stock Compensation, regarding a change to the terms or conditions of a share-based payment award. There was no initial impact that resulted from adoption of this guidance; it will be applied should a modification occur.

On January 1, 2018, we adopted ASU 2017-01 “Business Combinations (Topic 805): Clarifying the Definition of a Business.” This update clarified the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill, and consolidation.

Under previous guidance, substantially all of our property acquisitions were accounted for as business combinations with identifiable assets and liabilities measured at fair value, and acquisition related costs expensed as incurred.

With the adoption of ASU 2017-01, we expect that substantially all of our future property acquisitions will be accounted for as asset acquisitions. We allocate the purchase price of these properties on a relative fair value basis and capitalize direct acquisition related costs as part of the purchase price. Acquisitions costs that do not meet the criteria to be capitalized will be expensed as incurred and presented as General and administrative costs in our Consolidated Statements of Operations.

On January 1, 2018, we adopted ASU 2016-18 “Statement of Cash Flows (Topic 230): Restricted Cash.” This update required inclusion of restricted cash and restricted cash equivalents with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows.

Our restricted cash consists of amounts primarily held in deposit for tax, insurance and repair escrows held by lenders in accordance with certain debt agreements. Restricted cash is included as a component of Other assets, net on the Consolidated Balance Sheets. Changes in restricted cash are reported in our Consolidated Statements of Cash Flows as operating, investing or financing activities based on the nature of the underlying activity.

The following table reconciles our beginning-of-period and end-of-period balances of cash, cash equivalents and restricted cash for the periods shown (in thousands):

	September 30, 2018		December 31, 2017		September 30, 2017		December 31, 2016
Cash and cash equivalents	$	113,556	$	10,127	$	137,448	$	8,164
Restricted cash	15,538		13,382		19,943		17,149
Cash, cash equivalents and restricted cash	$	129,094	$	23,509	$	157,391	$	25,313

Recent Accounting Pronouncements - Not Yet Adopted

In June 2016, the FASB issued ASU 2016-13 “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This update replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We are in the initial phases of evaluating how this guidance will impact our accounting policies regarding assessment of, and allowance for, loan losses.

In February 2016, the FASB issued ASU 2016-02 “Leases (Topic 842).” The core principle of this update is that a lessee should recognize the right of use (“ROU”) assets and liabilities in the Consolidated Balance Sheet that arise from lease agreements. The ROU asset represents our right to use an underlying asset for the term of the lease and the lease liability represents our obligation to make lease payments arising for the agreements. The accounting by a lessor is largely unchanged from that applied under previous GAAP. This update also requires significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. The amendments in this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We will adopt the amendment in the first quarter 2019 using the prospective approach. Our income from real property and rental home revenue streams is derived from rental agreements where we are the lessor. The new accounting standard narrowed the definition of initial direct costs which can be capitalized. The new standard defines initial direct costs as the incremental costs of signing a lease. Employee salaries, legal fees rendered prior to the execution of a lease, negotiation costs, advertising and other origination effort costs no longer meet the definition of initial direct costs. These costs will now be included in general and administrative costs in our Consolidated Statement of Operations. We are currently assessing the impact of our measurement of initial direct costs under the new standard definition. We are the lessee in other arrangements, primarily for our executive offices, ground leases at certain communities and certain equipment. For leases with a term greater than one year, a right of use asset and corresponding ROU liability are to be included on the Consolidated Balance Sheet. The ROU asset and liability is measured as the estimated present value of minimum lease payments at the commencement of the lease agreement and discounted by our incremental borrowing rate of a collateralized term loan. For existing leases the ROU asset and ROU liability will be measured at the remaining present value of the lease payments. The lease liability is amortized over the straight line method over the term of the lease agreement. Extension options on ROU assets are included if the option is reasonably certain to be exercised. Operating leases with a term of less than one year are recognized as a lease expense over the term of the lease, no asset or liability is recognized on the Consolidated Balance Sheet. Variable lease payments are excluded from the ROU asset and liability on the Consolidated Balance Sheet and are recognized in the period in which the obligation payment occurred and recognized as variable lease obligation payments on the Consolidated Statement of Operations. We are currently evaluating our inventory of such leases to determine which will require recognition of right of use assets, corresponding lease liabilities, and the related disclosure requirements thereto. We will elect certain practical expedients allowable by the ASU, including the expedient to forego separation of lease and non-lease component of lessee contracts, resulting in a gross-up effect on the balance sheet assets and liabilities. Additionally for all leases, we will elect the package of practical expedients, which permits the Company not to reassess expired or existing contracts containing a lease, the lease classification for expired or existing contracts, and measurement of initial direct costs for any existing leases.

In August 2018, the FASB issued ASU 2018-15 “Intangibles- Goodwill and Other- Internal-Use Software (Topic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract.” This update aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal use software. The amendments in this update are effective for fiscal years beginning after December 15, 2020. Early adoption of the amendments in this update is permitted, including adoption in any interim period, for all entities. We are currently evaluating the potential impact of adoption of this standard on our consolidated financial statements.

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Commitments And Contingencies

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments And Contingencies

Commitments and Contingencies

Legal Proceedings

We are involved in various legal proceedings arising in the ordinary course of business. All such proceedings, taken together, are not expected to have a material adverse impact on our results of operations or financial condition.

Catastrophic Weather Related Estimates

In September 2017, our communities in Florida and Georgia sustained damages from Hurricane Irma. The table below sets forth estimated losses (in millions). Future changes to estimated losses will be recognized in the period(s) in which they are determined.

We maintain property, casualty, flood and business interruption insurance for our community portfolio, subject to customary deductibles and limits. The table below sets forth estimated insurance recoveries (in millions). Actual insurance recoveries could vary significantly from our estimates. Future changes to estimated insurance recoveries will be recognized in the period(s) in which they are determined.

	Nine Months Ended September 30, 2018
Total estimated insurance receivable - December 31, 2017	$	23.7
Change in estimated insurance recoveries	8.9
Advances from insurer	(16.4		)
Total estimated insurance receivable - September 30, 2018	$	16.2

Changes in estimated insurance recoveries for damages during the nine months ended September 30, 2018, were primarily the result of incremental invoices for which the total costs exceeded the applicable deductible. The change in estimated losses and changes in estimated insurance recoveries during the three and nine months ended September 30, 2018, resulted in a net loss of $0.2 million and a net gain of $2.0 million, respectively to Catastrophic weather related charges, net in our Consolidated Statements of Operations.

We are actively working with our insurer on claims for lost earnings and redevelopment costs greater than the asset impairment charge for the three Florida Keys communities. The three impaired Florida Keys communities will require redevelopment followed by a tenant lease-up period. As such, we currently cannot estimate a date when operating results will be restored to pre-hurricane levels. Our business interruption insurance policy provides for up to 60 months of coverage from the date of restoration.

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Subsequent Event

9 Months Ended

Sep. 30, 2018

Subsequent Events [Abstract]

Subsequent Event

Subsequent Events

In October 2018, we acquired a parcel of land in Austin, Texas for $4.2 million. The land parcel is an expansion for 220 MH development sites to our Oak Crest community.

We have evaluated our Consolidated Financial Statements for subsequent events through the date that this Form 10-Q was issued.

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Revenue (Tables)

9 Months Ended

Sep. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables disaggregates our revenue by major source (in thousands):

	Three Months Ended   September 30, 2018						Three Months Ended   September 30, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations		Home Sales and Rentals		Consolidated
REVENUE
Income from real property	$	229,607	$	—	$	229,607	$	198,263	$	—	$	198,263
Revenue from home sales	—		46,131		46,131		—		33,197		33,197
Rental home revenue	—		13,589		13,589		—		12,757		12,757
Ancillary revenues	27,608		—		27,608		17,017		—		17,017
Interest	5,256		—		5,256		5,920		—		5,920
Brokerage commissions and other revenues, net	1,347		—		1,347		1,091		—		1,091
Total revenue	$	263,818	$	59,720	$	323,538	$	222,291	$	45,954	$	268,245

	Nine Months Ended   September 30, 2018						Nine Months Ended   September 30, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations		Home Sales and Rentals		Consolidated
REVENUE
Income from real property	$	625,488	$	—	$	625,488	$	560,778	$	—	$	560,778
Revenue from home sales	—		122,248		122,248		—		91,319		91,319
Rental home revenue	—		39,957		39,957		—		37,774		37,774
Ancillary revenues	46,207		—		46,207		32,086		—		32,086
Interest	15,849		—		15,849		15,609		—		15,609
Brokerage commissions and other revenues, net	3,131		—		3,131		2,978		—		2,978
Total revenue	$	690,675	$	162,205	$	852,880	$	611,451	$	129,093	$	740,544

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Real Estate Acquisitions (Tables)

9 Months Ended

Sep. 30, 2018

Business Acquisition [Line Items]

Schedule of Purchase Price Allocation

The following table summarizes the amounts of assets acquired net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2017 (in thousands):

At Acquisition Date	Colony in the Wood		Emerald Coast		Lazy J Ranch		Ocean West		Caliente Sands		Pismo Dunes			Arbor Woods		Sunset Lakes		49er Village		Total
Investment in property	$	31,818	$	19,400	$	13,938	$	9,453	$	8,640	$	21,260		$	15,725	$	7,835	$	12,890	$	140,959
Notes receivable	—		—		—		—		—		—			23		—		—		23
Inventory of manufactured homes	—		—		2		—		21		—			465		—		—		488
In-place leases and other intangible assets	660		100		360		220		210		660			730		210		110		3,260
Total identifiable assets acquired net of liabilities assumed	$	32,478	$	19,500	$	14,300	$	9,673	$	8,871	$	21,920		$	16,943	$	8,045	$	13,000	$	144,730
Consideration
Cash	$	32,478	$	19,500	$	14,300	$	5,081	$	8,871	$	—		$	14,943	$	8,045	$	13,000	$	116,218
Equity	—		—		—		—		—		26,410			2,000		—		—		28,410
Liabilities assumed	—		—		—		4,592		—		510			—		—		—		5,102
Cash proceeds from seller	—		—		—		—		—		(5,000		)	—		—		—		(5,000		)
Total consideration	$	32,478	$	19,500	$	14,300	$	9,673	$	8,871	$	21,920		$	16,943	$	8,045	$	13,000	$	144,730

The following table summarizes the amounts of assets acquired net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2018 (in thousands):

At Acquisition Date	Archview		Petoskey KOA		Sands		Sun NG Resorts			Silver Creek		Highway West		Compass		Total
Investment in property	$	14,550	$	9,000	$	13,790	$	240,649		$	7,250	$	36,500	$	13,930	$	335,669
In-place leases and other intangible assets	—		—		460		16,339			—		—		70		16,869
Debt assumed	—		—		—		(3,120		)	—		—		—		(3,120		)
Other liabilities, net	—		—		—		(11,990		)	—		—		—		(11,990		)
Total identifiable assets acquired net of liabilities assumed	$	14,550	$	9,000	$	14,250	$	241,878		$	7,250	$	36,500	$	14,000	$	337,428
Consideration
Cash	$	14,550	$	9,000	$	14,250	$	184,625		$	7,250	$	36,500	$	14,000	$	280,175
Preferred Equity - Sun NG Resorts	—		—		—		35,277			—		—		—		35,277
Equity Interests - NG Sun LLC	—		—		—		21,976			—		—		—		21,976
Total consideration	$	14,550	$	9,000	$	14,250	$	241,878		$	7,250	$	36,500	$	14,000	$	337,428

Business Acquisition, Pro Forma Information

The total amount of revenues and net income included in the Consolidated Statements of Operations for the three and nine months ended September 30, 2018 related to the acquisitions completed in 2018 are set forth in the following table (in thousands):

	Three Months Ended   September 30, 2018		Nine Months Ended   September 30, 2018
	(unaudited)		(unaudited)
Total revenues	$	26,317	$	33,433
Net income	$	7,529	$	11,356

The information presented below has been prepared for comparative purposes only and does not purport to be indicative of either future results of operations or the results of operations that would have actually occurred had the acquisition been consummated on January 1, 2017 (in thousands, except per-share data):

	Three Months Ended September 30,				Nine Months Ended September 30,
	(unaudited)				(unaudited)
	2018		2017		2018		2017
Total revenues	$	325,504	$	296,322	$	861,193	$	780,529
Net income attributable to Sun Communities, Inc. common stockholders	$	57,413	$	42,987	$	93,714	$	68,378
Net income per share attributable to Sun Communities, Inc. common stockholders - basic	$	0.70	$	0.55	$	1.17	$	0.91
Net income per share attributable to Sun Communities, Inc. common stockholders - diluted	$	0.70	$	0.55	$	1.17	$	0.90

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

In 2018 we acquired the following communities:

Community Name	Type	Sites	Development Sites	State	Month Acquired
Archview	RV	114	50	UT	August
Petoskey KOA	RV	210	—	MI	August
The Sands RV and Golf Resort	RV (Age Restricted)	507	—	CA	July
Sun NG RV Resorts LLC (1)	RV	2,700	940	Various	June
Silver Creek	RV	264	176	MI	June
Highway West (Four Resorts)	RV	536	—	UT & OR	June
Compass RV	RV	175	—	FL	May
	Total	4,506	1,166

⁽¹⁾ Refer to Note 8, “Consolidated Variable Interest Entities,” Note 9, “Debt and Lines of Credit,” and Note 10, “Equity and Mezzanine Securities” for additional information.

In 2018, we acquired the following land for expansion / development:

Name	Location	Type	Expansion / Development Sites	Cost (millions)		Month Acquired
Pecan Park	Jacksonville, FL	RV	158	$	1.3	September
Smith Creek Crossing	Granby, CO	MH	310	$	0.9	September
River Run Ranch	Granby, CO	MH / RV	1,144	$	5.3	May
		Total	1,612	$	7.5

In 2017, we acquired the following communities:

Community Name	Type	Sites	Development Sites	State	Month Acquired
Colony in the Wood	MH (Age Restricted)	383	—	FL	December
Emerald Coast	MH and RV	201	14	FL	November
Lazy J Ranch	MH (Age Restricted)	220	—	CA	September
Ocean West	MH (Age Restricted)	130	4	CA	September
Caliente Sands	MH (Age Restricted)	118	—	CA	September
Pismo Dunes	RV (Age Restricted)	331	—	CA	July
Arbor Woods	MH	458	—	MI	June
Sunset Lakes	RV	498	—	IL	May
49er Village	RV	328	—	CA	March
	Total	2,667	18

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Collateralized Receivables and Transfers of Financial Assets (Tables)

9 Months Ended

Sep. 30, 2018

Accounts, Notes, Loans and Financing Receivable [Line Items]

Repurchase price percentage

Number of Payments	Repurchase Percentage
Fewer than or equal to 15	100	%
Greater than 15 but fewer than 64	90	%
Equal to or greater than 64 but fewer than 120	65	%
120 or more	50	%

Schedule of collateralized loans

	Nine Months Ended   September 30, 2018
Beginning balance	$	129,182
Principal payments and payoffs from our customers	(9,386		)
Principal reduction from repurchased homes	(6,707		)
Total activity	(16,093		)
Ending balance	$	113,089

Collateralized Receivables [Member]

Accounts, Notes, Loans and Financing Receivable [Line Items]

Allowance for collateralized and installment notes receivable

The following table sets forth the allowance for the collateralized receivables as of September 30, 2018 (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	(936	)
Lower of cost or market write-downs	587
Increase to reserve balance	(512		)
Total activity	75
Ending balance	$	(861	)

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Notes And Other Receivables (Tables)

9 Months Ended

Sep. 30, 2018

Accounts, Notes, Loans and Financing Receivable [Line Items]

Schedule of notes and other receivables

The following table sets forth certain information regarding notes and other receivables (in thousands):

	September 30, 2018		December 31, 2017
Installment notes receivable on manufactured homes, net	$	117,583	$	115,797
Other receivables, net	50,115		47,699
Total notes and other receivables, net	$	167,698	$	163,496

Schedule of Installment Notes Receivable

The change in the aggregate gross principal balance of the installment notes receivable is as follows (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	116,174
Investment in installment notes	14,042
Principal payments and payoffs from customers	(6,721		)
Principal reduction from repossessed homes	(5,296		)
Total activity	2,025
Ending balance	$	118,199

Installment Notes Receivable [Member]

Accounts, Notes, Loans and Financing Receivable [Line Items]

Allowance for collateralized and installment notes receivable

The following table sets forth the allowance change for the installment notes receivable as follows (in thousands):

	Nine Months Ended   September 30, 2018
Beginning balance	$	(377	)
Lower of cost or market write-downs	522
Increase to reserve balance	(761		)
Total activity	(239		)
Ending balance	$	(616	)

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Intangible Assets Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Finite-Lived Intangible Assets, Net [Abstract]

Schedule of Finite-Lived Intangible Assets

The gross carrying amounts, and accumulated amortization are as follows (in thousands):

		September 30, 2018					December 31, 2017
Intangible Asset	Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Ground leases	8-57 years	$	31,060	$	(1,755	)	$	32,165	$	(1,409	)
In-place leases	7 years	103,598		(55,881		)	100,843		(45,576		)
Franchise agreements and other intangible assets	7-15 years	16,521		(2,190		)	1,880		(1,451		)
Total		$	151,179	$	(59,826	)	$	134,888	$	(48,436	)

Schedule of Intangible Assets Amortization Expense

Total amortization expenses related to the intangible assets are as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Intangible Asset	2018		2017		2018		2017
Ground leases	$	188	$	257	$	633	$	771
In-place leases	3,320		3,478		10,305		10,322
Franchise agreements and other intangible assets	717		19		755		277
Total	$	4,225	$	3,754	$	11,693	$	11,370

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

We anticipate amortization expense for our intangible assets to be as follows for the next five years (in thousands):

	Year
	Remainder of 2018		2019		2020		2021		2022
Estimated expense	$	4,055	$	15,960	$	14,232	$	13,840	$	9,239

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Consolidated Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2018

DisclosureofVariableInterestEntities [Abstract]

Schedule of Variable Interest Entities

The following table summarizes the assets and liabilities included in our Consolidated Balance Sheets after eliminations (in thousands):

	September 30, 2018		December 31, 2017
ASSETS
Investment property, net	$	300,693	$	50,193
Other assets, net	20,655		1,659
TOTAL ASSETS	$	321,348	$	51,852
LIABILITIES AND STOCKHOLDERS’ EQUITY
Debt	$	44,426	$	41,970
Preferred Equity - Sun NG Resorts - mandatorily redeemable	35,277		—
Other liabilities	7,434		1,468
TOTAL LIABILITIES	87,137		43,438
Equity Interests - NG Sun LLC	21,976		—
Noncontrolling interests	7,544		4,285
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	116,657	$	47,723

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Debt And Lines Of Credit (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Schedule of debt and lines of credit [Table Text Block]

The following table sets forth certain information regarding debt including premiums, discounts and deferred financing costs (in thousands):

	Carrying Amount				Weighted Average Years to Maturity		Weighted Average Interest Rates
	September 30, 2018		December 31, 2017		September 30, 2018	December 31, 2017	September 30, 2018		December 31, 2017
Collateralized term loans - Life Companies	$	1,253,935	$	1,044,246	14.4	13.9	4.0	%	3.9	%
Collateralized term loans - FNMA	775,383		1,026,014		5.4	5.6	4.4	%	4.4	%
Collateralized term loans - CMBS	407,778		410,747		4.3	5.0	5.1	%	5.1	%
Collateralized term loans - FMCC	382,129		386,349		6.1	6.9	3.9	%	3.9	%
Secured borrowings	113,089		129,182		14.6	15.3	10.0	%	10.0	%
Lines of credit	—		41,257		0.0	3.1	—	%	2.8	%
Preferred Equity - Sun NG Resorts - mandatorily redeemable	35,277		—		4.0	-	6.0	%	—	%
Preferred OP units - mandatorily redeemable	37,338		41,443		4.9	5.0	6.6	%	6.7	%
Total debt	$	3,004,929	$	3,079,238	9.4	8.9	4.5	%	4.5	%

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Equity and Mezzanine Securities (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Schedule of Sale of Common Stock

Issuances of common stock under the Sales Agreement during 2018 were as follows:

Year to Date	Common Stock Issued	Weighted Average Sales Price		Net Proceeds (in Millions)
September 30, 2018	1,407,215	$	95.02	$	132.0

Activity of Conversions

		Nine Months Ended   September 30, 2018		Nine Months Ended   September 30, 2017
Series	Conversion Rate	Units/Shares Converted	Common Stock	Units/Shares Converted	Common Stock
Common OP unit	1	16,908	16,908	25,238	25,238
Series A-1 preferred OP unit	2.439	13,100	31,948	18,319	44,676
Series A-4 preferred OP unit	0.4444	13,765	6,116	9,000	3,996
Series A-4 preferred stock	0.4444	22,576	10,033	158,036	70,238
Series C preferred OP unit	1.11	1,919	2,130	16,806	18,651

Schedule of Dividends Payable

Cash Distributions	Record Date	Payment Date	Distribution per Share		Total Distribution (thousands)
Common Stock, Common OP units and Restricted Stock	9/28/2018	10/15/2018	$	0.71	$	63,250
Series A-4 Preferred Stock	9/14/2018	10/1/2018	$	0.40625	$	432

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Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

Share-based Compensation [Abstract]

Schedule of Restricted Stock Granted

The following table shows details on grants of equity awards during the nine months ended September 30, 2018:

Grant Period	Type	Plan	Shares Granted	Grant Date Fair Value Per Share			Vesting Type	Vesting Anniversary	Percentage
2018	Key Employees	2015 Equity Incentive Plan	16,500	$	88.30	(1)	Time Based	2nd	35.0	%
								3rd	35.0	%
								4th	20.0	%
								5th	5.0	%
								6th	5.0	%
2018	Key Employees	2015 Equity Incentive Plan	47,600	$	86.22	(1)	Time Based	20.0% annually over 5 years
2018	Executive Officers	2015 Equity Incentive Plan	60,000	$	87.24	(2)	Time Based	20.0% annually over 5 years
2018	Executive Officers	2015 Equity Incentive Plan	90,000	$	65.24	(3)	Market Condition	3rd	100.0	%
2018	Directors	2004 Non-Employee Director Option Plan	16,800	$	85.28	(2)	Time Based	3rd	100.0	%

⁽¹⁾ The fair value of the grants were determined by using the average closing price of our common stock on the dates the shares were issued.

⁽²⁾ The fair value of the grants were determined by using the closing price of our common stock on the dates the shares were issued.

⁽³⁾ Share-based compensation for restricted stock awards with market conditions is measured based on an estimate of shares expected to vest. We estimate the fair value of share-based compensation for restricted stock with market conditions using a Monte Carlo simulation. At the grant date ,our common stock price was $87.24. Based on the Monte Carlo simulation we expect 74.8% of the 90,000 shares to vest.

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Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

A presentation of segment financial information is summarized as follows (in thousands):

	Three Months Ended September 30, 2018									Three Months Ended September 30, 2017
	Real Property Operations			Home Sales and Rentals			Consolidated			Real Property Operations			Home Sales and Rentals			Consolidated
Revenues	$	257,215		$	59,720		$	316,935		$	215,280		$	45,954		$	261,234
Operating expenses/Cost of sales	101,258			39,831			141,089			82,388			31,869			114,257
Net operating income/Gross profit	155,957			19,889			175,846			132,892			14,085			146,977
Adjustments to arrive at net income / (loss):
Interest and other revenues, net	6,603			—			6,603			7,011			—			7,011
Home selling expenses	—			(4,043		)	(4,043		)	—			(3,290		)	(3,290		)
General and administrative	(17,187		)	(2,940		)	(20,127		)	(15,677		)	(2,497		)	(18,174		)
Transaction costs	(24		)	—			(24		)	(2,153		)	(14		)	(2,167		)
Depreciation and amortization	(54,305		)	(17,677		)	(71,982		)	(48,624		)	(15,608		)	(64,232		)
Loss on extinguishment of debt	(939		)	—			(939		)	—			—			—
Interest	(33,516		)	(5		)	(33,521		)	(32,082		)	(3		)	(32,085		)
Interest on mandatorily redeemable preferred OP units / equity	(1,142		)	—			(1,142		)	(790		)	—			(790		)
Catastrophic weather related charges, net	(173		)	—			(173		)	(7,718		)	(38		)	(7,756		)
Other income, net	1,230			1			1,231			3,345			—			3,345
Current tax (expense) / benefit	(135		)	(78		)	(213		)	210			(172		)	38
Deferred tax benefit	199			—			199			81			—			81
Net income / (loss)	56,568			(4,853		)	51,715			36,495			(7,537		)	28,958
Less:  Preferred return to preferred OP units	1,152			—			1,152			1,112			—			1,112
Less:  Amounts attributable to noncontrolling interests	4,304			(233		)	4,071			2,169			(393		)	1,776
Net income / (loss) attributable to Sun Communities, Inc.	51,112			(4,620		)	46,492			33,214			(7,144		)	26,070
Less: Preferred stock distributions	432			—			432			1,955			—			1,955
Net income / (loss) attributable to Sun Communities, Inc. common stockholders	$	50,680		$	(4,620	)	$	46,060		$	31,259		$	(7,144	)	$	24,115

	Nine Months Ended September 30, 2018									Nine Months Ended September 30, 2017
	Real Property Operations			Home Sales and Rentals			Consolidated			Real Property Operations			Home Sales and Rentals			Consolidated
Revenues	$	671,695		$	162,205		$	833,900		592,864			129,093			$	721,957
Operating expenses/Cost of sales	253,009			107,772			360,781			221,178			84,820			305,998
Net operating income/Gross profit	418,686			54,433			473,119			371,686			44,273			415,959
Adjustments to arrive at net income / (loss):
Interest and other revenues, net	18,980			—			18,980			18,587			—			18,587
Home selling expenses	—			(11,319		)	(11,319		)	—			(9,391		)	(9,391		)
General and administrative	(52,966		)	(8,466		)	(61,432		)	(49,082		)	(6,830		)	(55,912		)
Transaction costs	(138		)	—			(138		)	(7,001		)	11			(6,990		)
Depreciation and amortization	(155,624		)	(50,568		)	(206,192		)	(144,143		)	(45,576		)	(189,719		)
Loss on extinguishment of debt	(2,657		)	—			(2,657		)	(759		)	—			(759		)
Interest	(96,904		)	(15		)	(96,919		)	(95,754		)	(11		)	(95,765		)
Interest on mandatorily redeemable preferred OP units / equity	(2,551		)	—			(2,551		)	(2,361		)	—			(2,361		)
Catastrophic weather related charges, net	2,206			(219		)	1,987			(8,075		)	(49		)	(8,124		)
Other (expense) / income, net	(3,215		)	1			(3,214		)	5,341			(1		)	5,340
Current tax (expense) / income	(366		)	(246		)	(612		)	145			(278		)	(133		)
Deferred tax benefit	434			—			434			745			—			745
Net income / (loss)	125,885			(16,399		)	109,486			89,329			(17,852		)	71,477
Less:  Preferred return to preferred OP units	3,335			—			3,335			3,482			—			3,482
Less:  Amounts attributable to noncontrolling interests	9,204			(812		)	8,392			5,148			(969		)	4,179
Net income / (loss) attributable to Sun Communities, Inc.	113,346			(15,587		)	97,759			80,699			(16,883		)	63,816
Less: Preferred stock distributions	1,305			—			1,305			6,233			—			6,233
Net income / (loss) attributable to Sun Communities, Inc. common stockholders	$	112,041		$	(15,587	)	$	96,454		$	74,466		$	(16,883	)	$	57,583

Reconciliation of Assets from Segment to Consolidated

	September 30, 2018						December 31, 2017
	Real Property Operations		Home Sales and Rentals		Consolidated		Real Property Operations			Home Sales and Rentals		Consolidated
Identifiable assets:
Investment property, net	$	5,534,397	$	519,580	$	6,053,977	$	5,172,521		$	472,833	$	5,645,354
Cash and cash equivalents	86,857		26,699		113,556		(7,649		)	17,776		10,127
Inventory of manufactured homes	—		41,030		41,030		—			30,430		30,430
Notes and other receivables, net	149,564		18,134		167,698		149,798			13,698		163,496
Collateralized receivables, net	112,228		—		112,228		128,246			—		128,246
Other assets, net	138,451		26,786		165,237		130,455			3,849		134,304
Total assets	$	6,021,497	$	632,229	$	6,653,726	$	5,573,371		$	538,586	$	6,111,957

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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

Computations of basic and diluted earnings per share were as follows (in thousands, except per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
Numerator	2018			2017			2018			2017
Net income attributable to common stockholders	$	46,060		$	24,115		$	96,454		$	57,583
Allocation to restricted stock awards	(396		)	(189		)	(830		)	(461		)
Basic earnings: Net income attributable to common stockholders after allocation	45,664			23,926			95,624			57,122
Allocation to restricted stock awards	396			189			—			461
Diluted earnings: Net income attributable to common stockholders after allocation	$	46,060		$	24,115		$	95,624		$	57,583
Denominator
Weighted average common shares outstanding	81,599			78,369			80,022			75,234
Add: dilutive stock options	2			2			2			2
Add: dilutive restricted stock	480			437			—			610
Diluted weighted average common shares and securities	82,081			78,808			80,024			75,846
Earnings per share available to common stockholders after allocation:
Basic	$	0.56		$	0.31		$	1.19		$	0.76
Diluted	$	0.56		$	0.31		$	1.19		$	0.76

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following table presents the outstanding securities that were excluded from the computation of diluted earnings per share as of September 30, 2018 and 2017 (in thousands):

	As of September 30,
	2018	2017
Common OP units	2,729	2,757
Series A-1 preferred OP units	332	349
Series A-3 preferred OP units	40	40
Series A-4 preferred OP units	410	425
Series A-4 preferred stock	1,063	1,085
Series C preferred OP units	314	316
Aspen preferred OP units	1,284	1,284
Total securities	6,172	6,256

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Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The table below sets forth our financial assets and liabilities that required disclosure of fair value on a recurring basis as of September 30, 2018. The table presents the carrying values and fair values of our financial instruments as of September 30, 2018 and December 31, 2017, that were measured using the valuation techniques described above (in thousands). The table excludes other financial instruments such as cash and cash equivalents, accounts receivable, and accounts payable as the carrying values associated with these instruments approximate fair value since their maturities are less than one year.

	September 30, 2018				December 31, 2017
Financial assets	Carrying Value		Fair Value		Carrying Value		Fair Value
Installment notes receivable on manufactured homes, net	$	117,583	$	117,583	$	115,797	$	115,797
Collateralized receivables, net	$	112,228	$	112,228	$	128,246	$	128,246
Financial liabilities
Debt (excluding secured borrowings)	$	2,891,840	$	2,798,537	$	2,908,799	$	2,726,770
Secured borrowings	$	113,089	$	113,089	$	129,182	$	129,182
Lines of credit	$	—	$	—	$	41,257	$	41,257
Other liabilities (contingent consideration)	$	7,261	$	7,261	$	6,976	$	6,976

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Recent Accounting Pronouncements (Tables)

9 Months Ended

Sep. 30, 2018

Accounting Changes and Error Corrections [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash

The following table reconciles our beginning-of-period and end-of-period balances of cash, cash equivalents and restricted cash for the periods shown (in thousands):

	September 30, 2018		December 31, 2017		September 30, 2017		December 31, 2016
Cash and cash equivalents	$	113,556	$	10,127	$	137,448	$	8,164
Restricted cash	15,538		13,382		19,943		17,149
Cash, cash equivalents and restricted cash	$	129,094	$	23,509	$	157,391	$	25,313

Schedule of Cash, Cash Equivalents and Restricted Cash

The following table reconciles our beginning-of-period and end-of-period balances of cash, cash equivalents and restricted cash for the periods shown (in thousands):

	September 30, 2018		December 31, 2017		September 30, 2017		December 31, 2016
Cash and cash equivalents	$	113,556	$	10,127	$	137,448	$	8,164
Restricted cash	15,538		13,382		19,943		17,149
Cash, cash equivalents and restricted cash	$	129,094	$	23,509	$	157,391	$	25,313

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Commitments And Contingencies (Tables)

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Business Insurance Recoveries

	Nine Months Ended September 30, 2018
Total estimated insurance receivable - December 31, 2017	$	23.7
Change in estimated insurance recoveries	8.9
Advances from insurer	(16.4		)
Total estimated insurance receivable - September 30, 2018	$	16.2

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Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 323,538	$ 268,245	$ 852,880	$ 740,544
Income From Real Property [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	229,607	198,263	625,488	560,778
Revenue From Home Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	46,131	33,197	122,248	91,319
Rental Home Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	13,589	12,757	39,957	37,774
Ancillary Revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	27,608	17,017	46,207	32,086
Interest [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	5,256	5,920	15,849	15,609
Brokerage Commissions And Other Revenues, Net [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,347	1,091	3,131	2,978
Real Property Operations Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	263,818	222,291	690,675	611,451
Real Property Operations Segment [Member] | Income From Real Property [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	229,607	198,263	625,488	560,778
Real Property Operations Segment [Member] | Revenue From Home Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Real Property Operations Segment [Member] | Rental Home Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Real Property Operations Segment [Member] | Ancillary Revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	27,608	17,017	46,207	32,086
Real Property Operations Segment [Member] | Interest [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	5,256	5,920	15,849	15,609
Real Property Operations Segment [Member] | Brokerage Commissions And Other Revenues, Net [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,347	1,091	3,131	2,978
Home Sales and Home Rentals Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	59,720	45,954	162,205	129,093
Home Sales and Home Rentals Segment [Member] | Income From Real Property [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Home Sales and Home Rentals Segment [Member] | Revenue From Home Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	46,131	33,197	122,248	91,319
Home Sales and Home Rentals Segment [Member] | Rental Home Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	13,589	12,757	39,957	37,774
Home Sales and Home Rentals Segment [Member] | Ancillary Revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Home Sales and Home Rentals Segment [Member] | Interest [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Home Sales and Home Rentals Segment [Member] | Brokerage Commissions And Other Revenues, Net [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 0	$ 0	$ 0	$ 0

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Revenue Contract Balances (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset, Reclassified to Receivable	$ 19.8	$ 13.8

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Real Estate Acquisitions, Schedule of Properties Acquired (Details)	Sep. 30, 2018 site development_site	Dec. 31, 2017 site development_site
Business Acquisition [Line Items]
Sites | site	4,506	2,667
Development Sites | development_site	1,166	18
Archview [Member]
Business Acquisition [Line Items]
Sites | site	114
Development Sites | development_site	50
Petoskey RV Resort [Member]
Business Acquisition [Line Items]
Sites | site	210
Development Sites | development_site	0
The Sands [Member]
Business Acquisition [Line Items]
Sites | site	507
Development Sites | development_site	0
Sun NG RV Resorts [Member]
Business Acquisition [Line Items]
Sites | site	2,700
Development Sites | development_site	940
Silver Creek [Member]
Business Acquisition [Line Items]
Sites | site	264
Development Sites | development_site	176
Highway West [Member]
Business Acquisition [Line Items]
Sites | site	536
Development Sites | development_site	0
Compass [Member]
Business Acquisition [Line Items]
Sites | site	175
Development Sites | development_site	0
Colony In The Wood [Member]
Business Acquisition [Line Items]
Sites | site		383
Development Sites | development_site		0
Emerald Coast [Member]
Business Acquisition [Line Items]
Sites | site		201
Development Sites | development_site		14
Lazy J Ranch [Member]
Business Acquisition [Line Items]
Sites | site		220
Development Sites | development_site		0
Ocean West [Member]
Business Acquisition [Line Items]
Sites | site		130
Development Sites | development_site		4
Caliente Sands [Member]
Business Acquisition [Line Items]
Sites | site		118
Development Sites | development_site		0
Pismo Dunes [Member]
Business Acquisition [Line Items]
Sites | site		331
Development Sites | development_site		0
Arbor Woods [Member]
Business Acquisition [Line Items]
Sites | site		458
Development Sites | development_site		0
Sunset Lakes [Member]
Business Acquisition [Line Items]
Sites | site		498
Development Sites | development_site		0
Far Horizons 49er Village [Member]
Business Acquisition [Line Items]
Sites | site		328
Development Sites | development_site		0

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Real Estate Acquisitions, Schedule of Other Acquisitions Purchase Price Allocation (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Jul. 31, 2017	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017
At acquistion date
Investment in property			$ 335,669	$ 140,959
Notes receivable				23
Inventory of manufactured homes				488
In-place leases and other intangible assets			16,869	3,260
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities			(11,990)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			(3,120)
Total identifiable assets acquired and liabilities assumed			337,428	144,730
Consideration
Cash			280,175	116,218
Equity				28,410
Business Combination, Consideration Transferred, Other Liabilities Incurred, Net			35,277
Liabilities assumed				5,102
Cash proceeds from seller				(5,000)
Total consideration transferred		$ 2,000	337,428	144,730
Lazy J Ranch [Member]
At acquistion date
Investment in property				13,938
Notes receivable				0
Inventory of manufactured homes				2
In-place leases and other intangible assets				360
Total identifiable assets acquired and liabilities assumed				14,300
Consideration
Cash				14,300
Equity				0
Liabilities assumed				0
Cash proceeds from seller				0
Total consideration transferred				14,300
Ocean West [Member]
At acquistion date
Investment in property				9,453
Notes receivable				0
Inventory of manufactured homes				0
In-place leases and other intangible assets				220
Total identifiable assets acquired and liabilities assumed				9,673
Consideration
Cash				5,081
Equity				0
Liabilities assumed				4,592
Cash proceeds from seller				0
Total consideration transferred				9,673
Arbor Woods [Member]
At acquistion date
Investment in property				15,725
Notes receivable				23
Inventory of manufactured homes				465
In-place leases and other intangible assets				730
Total identifiable assets acquired and liabilities assumed				16,943
Consideration
Cash				14,943
Equity				2,000
Liabilities assumed				0
Cash proceeds from seller				0
Total consideration transferred				16,943
Caliente Sands [Member]
At acquistion date
Investment in property				8,640
Notes receivable				0
Inventory of manufactured homes				21
In-place leases and other intangible assets				210
Total identifiable assets acquired and liabilities assumed				8,871
Consideration
Cash				8,871
Equity				0
Liabilities assumed				0
Cash proceeds from seller				0
Total consideration transferred				8,871
Pismo Dunes [Member]
At acquistion date
Investment in property				21,260
Notes receivable				0
Inventory of manufactured homes				0
In-place leases and other intangible assets				660
Total identifiable assets acquired and liabilities assumed				21,920
Consideration
Cash				0
Equity				26,410
Liabilities assumed				510
Cash proceeds from seller				(5,000)
Total consideration transferred	$ 26,400			21,920
Colony In The Wood [Member]
At acquistion date
Investment in property				31,818
Notes receivable				0
Inventory of manufactured homes				0
In-place leases and other intangible assets				660
Total identifiable assets acquired and liabilities assumed				32,478
Consideration
Cash				32,478
Equity				0
Liabilities assumed				0
Cash proceeds from seller				0
Total consideration transferred				32,478
Emerald Coast [Member]
At acquistion date
Investment in property				19,400
Notes receivable				0
Inventory of manufactured homes				0
In-place leases and other intangible assets				100
Total identifiable assets acquired and liabilities assumed				19,500
Consideration
Cash				19,500
Equity				0
Liabilities assumed				0
Cash proceeds from seller				0
Total consideration transferred				19,500
Silver Creek [Member]
At acquistion date
Investment in property			7,250
In-place leases and other intangible assets			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			0
Total identifiable assets acquired and liabilities assumed			7,250
Consideration
Cash			7,250
Equity			0
Total consideration transferred			7,250
Highway West [Member]
At acquistion date
Investment in property			36,500
In-place leases and other intangible assets			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			0
Total identifiable assets acquired and liabilities assumed			36,500
Consideration
Cash			36,500
Equity			0
Total consideration transferred			36,500
Compass [Member]
At acquistion date
Investment in property			13,930
In-place leases and other intangible assets			70
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			0
Total identifiable assets acquired and liabilities assumed			14,000
Consideration
Cash			14,000
Equity			0
Total consideration transferred			14,000
Archview [Member]
At acquistion date
Investment in property			14,550
In-place leases and other intangible assets			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			0
Total identifiable assets acquired and liabilities assumed			14,550
Consideration
Cash			14,550
Equity			0
Total consideration transferred			14,550
Petoskey RV Resort [Member]
At acquistion date
Investment in property			9,000
In-place leases and other intangible assets			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			0
Total identifiable assets acquired and liabilities assumed			9,000
Consideration
Cash			9,000
Equity			0
Total consideration transferred			9,000
The Sands [Member]
At acquistion date
Investment in property			13,790
In-place leases and other intangible assets			460
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			0
Total identifiable assets acquired and liabilities assumed			14,250
Consideration
Cash			14,250
Equity			0
Total consideration transferred			14,250
Sun NG RV Resorts [Member]
At acquistion date
Investment in property			240,649
In-place leases and other intangible assets			16,339
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities			(11,990)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			(3,120)
Total identifiable assets acquired and liabilities assumed			241,878
Consideration
Cash			184,625
Business Combination, Consideration Transferred, Other Liabilities Incurred, Net			35,277
Total consideration transferred			241,878
Far Horizons 49er Village [Member]
At acquistion date
Investment in property				12,890
Notes receivable				0
Inventory of manufactured homes				0
In-place leases and other intangible assets				110
Total identifiable assets acquired and liabilities assumed				13,000
Consideration
Cash				13,000
Equity				0
Liabilities assumed				0
Cash proceeds from seller				0
Total consideration transferred				13,000
Sunset Lakes [Member]
At acquistion date
Investment in property				7,835
Notes receivable				0
Inventory of manufactured homes				0
In-place leases and other intangible assets				210
Total identifiable assets acquired and liabilities assumed				8,045
Consideration
Cash				8,045
Equity				0
Liabilities assumed				0
Cash proceeds from seller				0
Total consideration transferred				$ 8,045
Series A Preferred Stock [Member]
Consideration
Equity			21,976
Series A Preferred Stock [Member] | Silver Creek [Member]
Consideration
Equity			0
Series A Preferred Stock [Member] | Highway West [Member]
Consideration
Equity			0
Series A Preferred Stock [Member] | Compass [Member]
Consideration
Equity			0
Series A Preferred Stock [Member] | Archview [Member]
Consideration
Equity			0
Series A Preferred Stock [Member] | Petoskey RV Resort [Member]
Consideration
Equity			0
Series A Preferred Stock [Member] | The Sands [Member]
Consideration
Equity			0
Series A Preferred Stock [Member] | Sun NG RV Resorts [Member]
Consideration
Equity			$ 21,976

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Real Estate Acquisitions, Schedule of Land Acquired (Details) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) development_site	Dec. 31, 2017 USD ($) development_site
Business Acquisition [Line Items]
Development Sites | development_site		1,612	841
Cost | $	$ 8.0	$ 7.5
Carolina Pines [Member]
Business Acquisition [Line Items]
Development Sites | development_site			841
Cost | $			$ 5.9
Pecan Park [Member]
Business Acquisition [Line Items]
Development Sites | development_site		158
Cost | $		$ 1.3
Smith Creek Crossing [Member]
Business Acquisition [Line Items]
Development Sites | development_site		310
Cost | $		$ 0.9
River Run Ranch [Member]
Business Acquisition [Line Items]
Development Sites | development_site		1,144
Cost | $		$ 5.3

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Real Estate Acquisitions, Pro Forma (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition [Line Items]
Total revenues	$ 26,317		$ 33,433
Net income attributable to Sun Communities, Inc. common stockholders	7,529		11,356
Acquisitions - 2018 [Member]
Business Acquisition [Line Items]
Total revenues	325,504	$ 296,322	861,193	$ 780,529
Net income attributable to Sun Communities, Inc. common stockholders	$ 57,413	$ 42,987	$ 93,714	$ 68,378
Net income per share attributable to Sun Communities, Inc. common stockholders - basic	$ 0.70	$ 0.55	$ 1.17	$ 0.91
Net income per share attributable to Sun Communities, Inc. common stockholders - diluted	$ 0.70	$ 0.55	$ 1.17	$ 0.90

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Collateralized Receivables and Transfers of Financial Assets, Repurchase price percentage (Details) - Collateralized Receivables [Member]	9 Months Ended
	Sep. 30, 2018
Less than or equal to 15 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repurchase Percentage	100.00%
Greater than 15 but less than 64 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repurchase Percentage	90.00%
Equal to or greater than 64 but less than 120 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repurchase Percentage	65.00%
120 or more [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repurchase Percentage	50.00%

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Collateralized Receivables and Transfers of Financial Assets, Schedule of collateralized loans (Details) - Collateralized Receivables [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal payments and payoffs from our customers	$ (9,386)
Principal reduction from repurchased homes	6,707
Total activity	(16,093)
Ending balance	113,089
Secured Debt [Member] | Fair Value, Measurements, Recurring [Member] | Reported Value Measurement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	129,182
Ending balance	$ 113,089

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Collateralized Receivables and Transfers of Financial Assets Collateralized Receivables and Transfers of Financial Assets, Allowance for Collateralized Receivables (Details) - Collateralized Receivables [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 936
Lower of cost or market write-downs	587
Increase to reserve balance	512
Total activity	75
Ending balance	$ (861)

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Collateralized Receivables and Transfers of Financial Assets, Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes and other receivables, net	$ 167,698		$ 167,698		$ 163,496
Interest income and expense, net	2,800	$ 3,300		$ 9,900
Collateralized Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	(861)		$ (861)		$ 936
Receivable With Imputed Interest, Term			14 years 3 months 22 days		15 years 3 months 18 days
Financing Receivable, Gross	113,089		$ 113,089
Receivable with Imputed Interest, Effective Yield (Interest Rate)			10.00%		10.00%
Reported Value Measurement [Member] | Collateralized Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes and other receivables, net	112,200		$ 112,200		$ 128,246
Secured Debt [Member] | Fair Value, Measurements, Recurring [Member] | Reported Value Measurement [Member] | Collateralized Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Gross	$ 113,089		$ 113,089		$ 129,182

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Notes and Other Receivables, Schedule of notes and other receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total notes and other receivables, net	$ 167,698	$ 163,496
Other receivables, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total notes and other receivables, net	$ 50,115	47,699
Reported Value Measurement [Member] | Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total notes and other receivables, net		$ 115,797

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Notes And Other Receivables Notes and Other Receivables, Installment notes receivable on manufactured homes - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and Notes Receivable, Net	$ 167,698	$ 163,496
Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	$ (600)	$ (400)
Receivable with Imputed Interest, Effective Yield (Interest Rate)	8.00%	8.20%
Receivable With Imputed Interest, Term	16 years 10 months 6 days	17 years 2 months 12 days
Reported Value Measurement [Member] | Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and Notes Receivable, Net		$ 115,797
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and Notes Receivable, Net	$ 117,583

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Notes and Other Receivables, Schedule of installment notes receivable (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Collateralized receivables, net and Installment Notes Receivables on Manufactured Homes [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase to reserve balance	$ 761
Installment notes receivable on manufactured homes, gross [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	116,174
Financed sales of manufactured homes	14,042
Principal payments and payoffs from our customers	(6,721)
Principal reduction from repossessed homes	5,296
Total activity	2,025
Ending balance	$ 118,199

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Notes and Other Receivables, Allowance for installment notes receivable (Details) - Collateralized receivables, net and Installment Notes Receivables on Manufactured Homes [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 377
Lower of cost or market write-downs	522
Increase to reserve balance	761
Total activity	(239)
Ending balance	$ (616)

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Notes And Other Receivables Notes and Other Receivables, Other receivables - Narrative (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables for rent, water, sewer usage	$ 7.9	$ 7.0
Allowance for rent, water, sewer usage receivables	(1.8)	(1.5)
Contract with Customer, Asset, Reclassified to Receivable	19.8	13.8
Insurance receivables	$ 22.4	$ 26.9

XML

Intangible Assets Intangible Assets, Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 151,179	$ 134,888
Accumulated Amortization	(59,826)	(48,436)
Ground Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	31,060	32,165
Accumulated Amortization	$ (1,755)	(1,409)
Leases, Acquired-in-Place [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Gross Carrying Amount	$ 103,598	100,843
Accumulated Amortization	(55,881)	(45,576)
Franchise Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,521	1,880
Accumulated Amortization	$ (2,190)	$ (1,451)
Minimum [Member] | Ground Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years
Minimum [Member] | Franchise Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum [Member] | Ground Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	57 years
Maximum [Member] | Franchise Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years

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Intangible Assets Intangible Assets, Schedule of Intangible Asset Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 4,225	$ 3,754	$ 11,693	$ 11,370
Ground Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	188	257	633	771
Leases, Acquired-in-Place [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	3,320	3,478	10,305	10,322
Franchise Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 717	$ 19	$ 755	$ 277

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Intangible Assets, Intangibles Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2018	$ 4,055
2018	15,960
2019	14,232
2020	13,840
2021	$ 9,239

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Intangible Assets Intangible Assets, Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2018	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Ground Leases, Percent Of Land Acquired	50.00%
Payments to Acquire Land	$ 8.0	$ 7.5
Ground Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	0.0
Finite-Lived Intangible Assets, Accumulated Amortization	0.0
Finite-Lived Intangible Assets, Net	$ 0.0

XML

Investment In Affiliates , Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($)
Schedule of Equity Method Investments [Line Items]
Net income from investment	$ 0.1
GTSC [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	40.00%
Investment carrying value	$ 19.9

XML

Consolidated Variable Interest Entities, Schedule of Variable Interest Entities (Details)	1 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) site sites properties Rate	Dec. 31, 2017 USD ($) site Rate
Variable Interest Entity [Line Items]
Investment property, net		$ 6,053,977,000	$ 5,645,354,000
Other assets, net (including $20,655 and $1,659 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)		165,237,000	134,304,000
Mortgage loans payable (including $44,426 and $41,970 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)		2,819,225,000	2,867,356,000
Other liabilities (including $7,434 and $1,468 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)		163,459,000	138,536,000
Liabilities		3,367,285,000	3,405,204,000
Consolidated variable interest entities		$ 7,544,000	$ 4,285,000
VIE as a Percentage of Consolidated Assets | Rate		4.80%	0.80%
VIE as a Percentage of Consolidated Liabilities | Rate		2.60%	1.20%
VIE as a Percentage of Total Equity		1.00%
Sites | site		4,506	2,667
Cash		$ 280,175,000	$ 116,218,000
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Investment property, net		300,693,000	50,193,000
Other assets, net (including $20,655 and $1,659 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)		20,655,000	1,659,000
Total Assets		321,348,000	51,852,000
Mortgage loans payable (including $44,426 and $41,970 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)		44,426,000	41,970,000
Preferred OP units - mandatorily redeemable		35,277,000	0
Other liabilities (including $7,434 and $1,468 for consolidated variable interest entities at September 30, 2018 and December 31, 2017; see Note 8)		7,434,000	1,468,000
Liabilities		87,137,000	43,438,000
Equity Interests		21,976,000	0
Consolidated variable interest entities		7,544,000	4,285,000
Total Liabilities and Stockholder's Equity		116,657,000	47,723,000
Preferred Equity, Mandatorily Redeemable [Member]
Variable Interest Entity [Line Items]
Preferred OP units - mandatorily redeemable		35,277,000	$ 0
Northgate Additional Consideration [Member]
Variable Interest Entity [Line Items]
Cash		$ 0
Northgate [Member]
Variable Interest Entity [Line Items]
Number of Real Estate Properties | properties		10
Sites | sites		2,700
Northgate [Member] | Sun NG RV Resorts [Member]
Variable Interest Entity [Line Items]
Ownership percentage		80.00%
Payments to Acquire Interest in Joint Venture	$ 61.6
Northgate [Member] | NG Sun LLC [Member]
Variable Interest Entity [Line Items]
Ownership percentage		20.00%
Payments to Acquire Interest in Joint Venture	$ 15.4
Development Sites [Member] | Northgate [Member]
Variable Interest Entity [Line Items]
Sites | sites		940
Ground Up Development [Member] | Northgate [Member]
Variable Interest Entity [Line Items]
Number of Real Estate Properties | properties		1
Preferred Partner [Member] | Northgate Additional Consideration [Member]
Variable Interest Entity [Line Items]
Cash		$ 0
Bridge Loan [Member] | Northgate Additional Consideration [Member]
Variable Interest Entity [Line Items]
Cash		$ 0

XML

Debt And Lines Of Credit , Schedule of debt and lines of credit (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2017	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Secured debt	$ 2,867,356		$ 2,819,225	$ 2,819,225	$ 2,867,356
Debt weighted average to maturity, years				9 years 4 months 28 days	8 years 10 months 24 days
Weighted average interest rate	4.50%		4.50%	4.50%	4.50%
Lines of credit	$ 41,257				$ 41,257
Total debt	3,079,238		$ 3,004,929	$ 3,004,929	3,079,238
Collateralized term loans - CMBS [Member]
Debt Instrument [Line Items]
Secured debt	$ 410,747		$ 775,383	$ 775,383	$ 410,747
Debt weighted average to maturity, years				5 years 4 months 21 days	5 years
Weighted average interest rate	5.10%		4.40%	4.40%	5.10%
Secured borrowing [Member]
Debt Instrument [Line Items]
Debt instrument term	30 years	25 years	20 years
Preferred OP units [Member]
Debt Instrument [Line Items]
Secured debt			$ 37,338	$ 37,338
Preferred OP units - mandatorily redeemable	$ 41,443		$ 37,338	$ 37,338	$ 41,443
Debt weighted average to maturity, years				14 years 6 months 26 days	5 years
Weighted average interest rate	6.70%		10.00%	10.00%	6.70%
Preferred Equity, Mandatorily Redeemable [Member]
Debt Instrument [Line Items]
Preferred OP units - mandatorily redeemable	$ 0		$ 35,277	$ 35,277	$ 0
Debt instrument term				4 years 4 days
Weighted average interest rate	0.00%		6.00%	6.00%	0.00%
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Debt Instrument [Line Items]
Secured debt	$ 1,026,014		$ 382,129	$ 382,129	$ 1,026,014
Debt weighted average to maturity, years				6 years 1 month 17 days	5 years 7 months 6 days
Weighted average interest rate	4.40%		3.90%	3.90%	4.40%
Life Companies [Member] | Collateralized Mortgage Backed Securities [Member]
Debt Instrument [Line Items]
Secured debt	$ 1,044,246		$ 1,253,935	$ 1,253,935	$ 1,044,246
Debt weighted average to maturity, years				14 years 4 months 21 days	13 years 10 months 24 days
Weighted average interest rate	3.90%		4.00%	4.00%	3.90%
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
Debt Instrument [Line Items]
Secured debt	$ 386,349		$ 407,778	$ 407,778	$ 386,349
Debt weighted average to maturity, years				4 years 3 months 7 days	6 years 10 months 24 days
Weighted average interest rate	3.90%		5.10%	5.10%	3.90%
Reported Value Measurement [Member] | Secured borrowing [Member]
Debt Instrument [Line Items]
Secured debt	$ 129,182		$ 113,089	$ 113,089	$ 129,182
Secured borrowings on collateralized receivables	$ 129,182				$ 129,182
Debt weighted average to maturity, years				4 years 10 months 21 days	15 years 3 months 18 days
Weighted average interest rate	10.00%		6.60%	6.60%	10.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Lines of credit			$ 0	$ 0
Revolving Credit Facility [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt weighted average to maturity, years				0 years	3 years 1 month 6 days
Weighted average interest rate	2.80%		0.00%	0.00%	2.80%

XML

Debt And Lines Of Credit , Narrative - Collateralized Term Loans (Details)	1 Months Ended			3 Months Ended						9 Months Ended		12 Months Ended
	Dec. 31, 2017 USD ($) site	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) site sites properties	Jun. 30, 2018 USD ($) community	Mar. 31, 2018 USD ($) community	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($) community	Sep. 30, 2018 USD ($) site sites properties	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) site
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				$ 939,000			$ 0	$ 300,000	$ 500,000	$ 2,657,000	$ 759,000
Reduction in secured borrowing balance										$ 16,093,000	17,674,000
Number of Real Estate Units Released | community					11	3			1
Weighted average interest rate	4.50%			4.50%						4.50%		4.50%
Sites | site	2,667			4,506						4,506		2,667
Debt weighted average to maturity, length										9 years 4 months 28 days		8 years 10 months 24 days
Total debt	$ 2,867,356,000			$ 2,819,225,000						$ 2,819,225,000		$ 2,867,356,000
Secured Debt [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				300,000	$ 0	$ 200,000
Reduction in secured borrowing balance				30,500,000	$ 0	$ 24,400,000
Debt Instrument, Interest Rate, Stated Percentage	4.25%											4.25%
Debt instrument, face amount	$ 100,000,000.0		$ 77,000,000	$ 228,000,000				$ 77,000,000		$ 228,000,000		$ 100,000,000.0
Interest rate	6.34%		4.16%	4.10%	4.53%	6.36%		4.16%		4.10%		6.34%
Debt instrument term	30 years		25 years	20 years
Commercial Mortgage Backed Securities [Member]
Debt Instrument [Line Items]
Weighted average interest rate	5.10%			4.40%						4.40%		5.10%
Debt weighted average to maturity, length										5 years 4 months 21 days		5 years
Total debt	$ 410,747,000			$ 775,383,000						$ 775,383,000		$ 410,747,000
Collateralized Mortgage Backed Securities [Member]
Debt Instrument [Line Items]
Net book value of properties securing collateralized term loans				$ 3,200,000,000						$ 3,200,000,000
Properties securing debt [Member] | Collateralized Mortgage Backed Securities [Member]
Debt Instrument [Line Items]
Sites | sites				72,620						72,620
Debt Instrument, number of properties securing a debt instument | properties				185						185
Collateralized Term Loan Due June 1, 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Defeased	38,600,000
Gain (loss) on extinguishment of debt	$ 5,200,000
Debt Instrument, Interest Rate, Stated Percentage	5.25%											5.25%
Collateralized Term Loan Due August 31, 2017 [Member]
Debt Instrument [Line Items]
Reduction in secured borrowing balance			$ 3,900,000
Debt Instrument, Interest Rate, Stated Percentage			6.54%					6.54%
Collateralized Term Loan Due August 1, 2017 [Member]
Debt Instrument [Line Items]
Debt Instrument, Defeased									$ 18,900,000
Debt Instrument, Interest Rate, Stated Percentage									6.49%
Collateralized Term Loan Due May 1, 2017 [Member]
Debt Instrument [Line Items]
Reduction in secured borrowing balance									$ 10,000,000
Debt Instrument, Interest Rate, Stated Percentage									5.57%
Ocean West [Member]
Debt Instrument [Line Items]
Sites | site	130											130
Ocean West [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 4,600,000					$ 4,600,000				$ 4,600,000
Interest rate		4.34%					4.34%				4.34%
Debt instrument term		9 years 9 months 18 days

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Debt And Lines Of Credit , Narrative - Aspen Preferred OP Units and Series B-3 preferred OP units (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2018
Debt Instrument [Line Items]
Stock Redeemed or Called During Period, Shares		3,400,000
Stock Redeemed or Called During Period, Value		$ 85.5
Financial Instruments Subject to Mandatory Redemption, Rate Of Return	600.00%
Preferred Equity, Mandatorily Redeemable [Member]
Debt Instrument [Line Items]
Financial Instruments Subject to Mandatory Redemption, Value of Shares Issued			$ 35.3
Preferred OP units [Member] | Convertible debt - Aspen Preferred OP Units January 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount			$ 34.7
Convertible units to shares (in shares)			447,674
Debt Instrument, Interest Rate During Period			6.50%
Debt Instrument, Convertible, Conversion Price			$ 68.00
Conversion of Stock, Shares Converted			0.397
Series B-3 Preferred OP Units [Member] | Convertible debt - Aspen Preferred OP Units January 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 6.7	$ 2.7
Debt Instrument, Convertible, Conversion Price			$ 100.00
Series B-3 Preferred OP Units [Member]
Debt Instrument [Line Items]
Stock Redeemed or Called During Period, Shares			41,051
Redemption price including accrued and unpaid dividends (in dollars per share)			$ 100.065753
Stock Redeemed or Called During Period, Value			$ 4.1

XML

Debt And Lines Of Credit , Narrative - Line of Credit (Details)	1 Months Ended	3 Months Ended			9 Months Ended	12 Months Ended
	Apr. 30, 2017	Jun. 30, 2018 community	Mar. 31, 2018 community	Mar. 31, 2017 community	Sep. 30, 2018 USD ($) Rate	Dec. 31, 2017 USD ($)	Apr. 25, 2017 USD ($) Rate
Line of Credit Facility [Line Items]
Lines of credit						$ 41,257,000
Weighted average interest rate					4.50%	4.50%
Debt weighted average to maturity, length					9 years 4 months 28 days	8 years 10 months 24 days
Number of Real Estate Units Released | community		11	3	1
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity							$ 650,000,000
Line of credit, borrowing capacity							900,000,000
Debt Instrument, Maturity Date	Apr. 25, 2021
Line of credit, additional borrowing capacity							350,000,000
Letters of credit outstanding, amount					$ 4,200,000	$ 1,300,000
Line of credit - manufactured home floor plan facility [Member]
Line of Credit Facility [Line Items]
Line of credit, borrowing capacity					12,000,000
Lines of credit					$ 0	$ 4,000,000
Weighted average interest rate | Rate					7.00%
Prime Rate [Member] | Line of credit - manufactured home floor plan facility [Member]
Line of Credit Facility [Line Items]
Basis points | Rate					100.00%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit, borrowing capacity							550,000,000
Long-term Debt					$ 0
Lines of credit					$ 0
Revolving Credit Facility [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate					0.00%	2.80%
Debt weighted average to maturity, length					0 years	3 years 1 month 6 days
Revolving Credit Facility [Member] | Eurodollar [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of credit variable interest rate | Rate					1.35%
Term Loan [Member]
Line of Credit Facility [Line Items]
Line of credit, borrowing capacity							$ 100,000,000
Long-term Debt					$ 0
Term Loan [Member] | Eurodollar [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of credit variable interest rate | Rate					1.30%
Minimum [Member] | Revolving Credit Facility [Member] | Eurodollar [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Interest rate | Rate							1.35%
Minimum [Member] | Term Loan [Member] | Eurodollar [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Interest rate | Rate							1.30%
Maximum [Member] | Prime Rate [Member] | Line of credit - manufactured home floor plan facility [Member]
Line of Credit Facility [Line Items]
Interest rate | Rate					6.00%
Maximum [Member] | Revolving Credit Facility [Member] | Eurodollar [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Interest rate | Rate							2.20%
Maximum [Member] | Term Loan [Member] | Eurodollar [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Interest rate | Rate							2.15%

XML

Equity and Mezzanine Securities, Narrative (Details) - USD ($)			1 Months Ended					3 Months Ended			9 Months Ended		12 Months Ended	15 Months Ended
	Oct. 15, 2018	Oct. 01, 2018	Sep. 30, 2018	Jun. 30, 2018	Jul. 31, 2017	Jun. 30, 2017	May 31, 2017	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Sep. 30, 2018	Nov. 30, 2017	Nov. 30, 2004
Class of Stock [Line Items]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount			$ 21,976,000					$ 21,976,000	$ 0		$ 21,976,000		$ 0	$ 21,976,000
Issuance of common stock and common OP units, net								$ 132,000,000			$ 624,152,000			$ 163,800,000
Shares Issued, Weighted Average Price Per Share			$ 95.02					$ 95.02			$ 95.02			$ 95.02
Aggregate Value of Shares to be Issued in Accordance to Sales Agreement											$ 450,000,000
Commission, Maximum Percentage of Gross Sales Price Per Share According to Sales Agreement											2.00%
New shares issued (in shares)			5,060,000				4,830,000	1,407,215
Proceeds from Issuance of Common Stock			$ 499,900,000				$ 408,900,000
Redemption price (in dollars per share)			$ 25.00					$ 25.00			$ 25.00			$ 25.00	$ 25.14349
Stock Redeemed or Called During Period, Shares									3,400,000
Stock Redeemed or Called During Period, Value									$ 85,500,000
Total consideration transferred										$ 2,000,000	$ 337,428,000		144,730,000
Series A-4 Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends Per Share, Declared								0.40625
Stock Redeemed or Called During Period, Shares						438,448
Series A-4 Preferred Stock | Subsequent Event
Class of Stock [Line Items]
Payments of dividends		$ 432,000
Common Stock
Class of Stock [Line Items]
Dividends per common share								$ 0.71
Common Stock | Subsequent Event
Class of Stock [Line Items]
Payments of dividends	$ 63,250,000
Common OP Units
Class of Stock [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares						23,311
Series A-4 preferred OP units
Class of Stock [Line Items]
Stock Redeemed or Called During Period, Shares						200,000
Common Stock
Class of Stock [Line Items]
Issuance of common stock and common OP units, net											$ 66,000
Authorized to be repurchased (in shares)																1,000,000
Remaining number of shares authorized to be repurchased (in shares)			400,000					400,000			400,000			400,000
Conversion of Common OP Units to common stock (in shares)											1,000
Series A-4 preferred OP units
Class of Stock [Line Items]
Conversion of Common OP Units to common stock (in shares)											13,765	9,000
Series A-4 preferred OP units | Common OP Units
Class of Stock [Line Items]
Conversion of Common OP Units to common stock (in shares)											6,116	3,996
Conversion of Common OP Units
Class of Stock [Line Items]
Conversion of Common OP Units to common stock (in shares)											16,908	25,238
Conversion of Common OP Units | Common OP Units
Class of Stock [Line Items]
Conversion of Common OP Units to common stock (in shares)											16,908
Series A-1 Preferred OP Units
Class of Stock [Line Items]
Conversion of Common OP Units to common stock (in shares)											13,100	18,319
Series A-1 Preferred OP Units | Common OP Units
Class of Stock [Line Items]
Conversion of Common OP Units to common stock (in shares)											31,948	44,676
Pismo Dunes [Member]
Class of Stock [Line Items]
Total consideration transferred					$ 26,400,000								$ 21,920,000
Pismo Dunes [Member] | Common OP Units
Class of Stock [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares					298,900
Green Courte [Member] | Series A-4 Preferred Stock and OP Units [Member]
Class of Stock [Line Items]
Stock Redeemed or Called During Period, Value						$ 24,700,000
Payments of Dividends						$ 200,000
NG Sun LLC [Member] | Sun NG RV Resorts [Member]
Class of Stock [Line Items]
Variable Interest Entity, Equity Interests Issued				$ 6.5
Variable Interest Entity, Equity Interests Issued, Floating Rate				5.00%
Sun NG RV Resorts [Member] | Common Stock | Sun NG RV Resorts [Member]
Class of Stock [Line Items]
Variable Interest Entity, Equity Interests Issued				$ 15.4

XML

Equity and Mezzanine Securities, Conversion of Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Dec. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Nov. 30, 2017
Conversion of Stock [Line Items]
Redemption price (in dollars per share)		$ 25.00		$ 25.14349
Stock Redeemed or Called During Period, Value	$ 85.5
Stock Redeemed or Called During Period, Shares	3,400,000
Conversion of Common OP Units
Conversion of Stock [Line Items]
Conversion of units		16,908	25,238
Series A-1 Preferred OP Units
Conversion of Stock [Line Items]
Conversion of units		13,100	18,319
Series A-4 preferred OP units
Conversion of Stock [Line Items]
Conversion of units		13,765	9,000
Series A-4 Preferred Stock
Conversion of Stock [Line Items]
Conversion of units		22,576	158,036
Series C preferred OP unit
Conversion of Stock [Line Items]
Conversion of units		1,919	16,806
Common OP Units | Conversion of Common OP Units
Conversion of Stock [Line Items]
Conversion Rate		1,000
Conversion of units		16,908
Common OP Units | Series A-1 Preferred OP Units
Conversion of Stock [Line Items]
Conversion Rate		2,439.000
Conversion of units		31,948	44,676
Common OP Units | Series A-4 preferred OP units
Conversion of Stock [Line Items]
Conversion Rate		444.4000
Conversion of units		6,116	3,996
Common OP Units | Series A-4 Preferred Stock
Conversion of Stock [Line Items]
Conversion Rate		444.4000
Conversion of units		10,033	70,238
Common OP Units | Series C preferred OP unit
Conversion of Stock [Line Items]
Conversion Rate		1,110
Conversion of units		2,130	18,651

XML

Equity and Mezzanine Securities Equity and Mezzanine Securities, Dividends Payable Table (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended
	Oct. 15, 2018	Oct. 01, 2018	Sep. 28, 2018	Sep. 14, 2018	Sep. 30, 2018
Common Stock
Dividends Payable [Line Items]
Dividends Payable, Date of Record			Sep. 28, 2018
Dividends per common share					$ 0.71
Series A-4 Preferred Stock
Dividends Payable [Line Items]
Dividends Payable, Date of Record				Sep. 14, 2018
Preferred Stock, Dividends Per Share, Declared					$ 0.40625
Subsequent Event | Common Stock
Dividends Payable [Line Items]
Dividends Payable, Date to be Paid	Oct. 15, 2018
Payments of dividends	$ 63,250
Subsequent Event | Series A-4 Preferred Stock
Dividends Payable [Line Items]
Dividends Payable, Date to be Paid		Oct. 01, 2018
Payments of dividends		$ 432

XML

Equity and Mezzanine Securities Equity and Mezzanine Securities, Schedule of Sale of Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended	9 Months Ended	15 Months Ended
	Sep. 30, 2018	May 31, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2018
Aggregate Value of Shares to be Issued in Accordance to Sales Agreement				$ 450,000
Proceeds from Issuance of Common Stock	$ 499,900	$ 408,900
New shares issued (in shares)	5,060,000	4,830,000	1,407,215
Shares Issued, Weighted Average Price Per Share	$ 95.02		$ 95.02	$ 95.02	$ 95.02
Issuance of common stock and common OP units, net			$ 132,000	$ 624,152	$ 163,800

XML

Share-Based Compensation (Details)	9 Months Ended
	Sep. 30, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price | $ / shares	$ 87.24
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Percentage	74.80%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	90,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested restricted stock (in shares)	202,368
Grant One [Member] | Key Employees [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares (in shares)	16,500
Weighted average grant date fair value | $ / shares	$ 88.30
Grant One [Member] | Third Anniversary | Key Employees [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	35.00%
Grant One [Member] | Fourth Anniversary | Key Employees [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	35.00%
Grant One [Member] | Fifth Anniversary | Key Employees [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	20.00%
Grant One [Member] | Sixth Anniversary | Key Employees [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	5.00%
Grant One [Member] | Seventh Anniversary | Key Employees [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	5.00%
Grant Two [Member] | Key Employees [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares (in shares)	47,600
Weighted average grant date fair value | $ / shares	$ 86.22
Grant Three [Member] | Executive Officer [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares (in shares)	60,000
Weighted average grant date fair value | $ / shares	$ 87.24
Grant Four [Member] | Executive Officer [Member] | Restricted Stock [Member] | 2015 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares (in shares)	90,000
Weighted average grant date fair value | $ / shares	$ 65.24
Award vesting percentage	100.00%
Grant Five [Member] | Director [Member] | Restricted Stock [Member] | 2004 Non-employee Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares (in shares)	16,800
Weighted average grant date fair value | $ / shares	$ 85.28
Award vesting percentage	100.00%

XML

Segment Reporting Segment Reporting, Seasonality (Details) $ in Millions	3 Months Ended								9 Months Ended
	Dec. 31, 2018	Sep. 30, 2018 USD ($)	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017 USD ($)	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018 USD ($) segment
Segment Reporting Information [Line Items]
Number of reportable segments | segment									2
Real Property Operations Segment [Member]
Segment Reporting Information [Line Items]
Expected annual transient RV revenue | $		$ 107.6			$ 78.0				$ 107.6
Transient RV rental revenue recognized as a percentage		42.00%	20.10%	20.40%	15.80%	36.90%	20.10%	27.20%
Scenario, Forecast [Member] | Real Property Operations Segment [Member]
Segment Reporting Information [Line Items]
Transient RV rental revenue recognized as a percentage	17.50%

XML

Segment Reporting Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenues	$ 316,935	$ 261,234			$ 833,900	$ 721,957
Operating expenses/Cost of sales	141,089	114,257			360,781	305,998
Net operating income/Gross profit	175,846	146,977			473,119	415,959
Interest and other revenues, net	6,603	7,011			18,980	18,587
Home selling expenses	(4,043)	(3,290)			(11,319)	(9,391)
General and administrative	(20,127)	(18,174)			(61,432)	(55,912)
Transaction costs	(24)	(2,167)			(138)	(6,990)
Depreciation and amortization	(71,982)	(64,232)			(206,192)	(189,719)
Loss on extinguishment of debt	(939)	0	$ (300)	$ (500)	(2,657)	(759)
Interest	(33,521)	(32,085)			(96,919)	(95,765)
Interest on mandatorily redeemable preferred OP units / equity	(1,142)	(790)			(2,551)	(2,361)
Catastrophic weather related charges	173	7,756			1,987	8,124
Other income / (expense), net	1,231	3,345			(3,214)	5,340
Current tax (expense) / benefit	(213)	38			(612)	(133)
Deferred tax benefit	(199)	(81)			(434)	(745)
Net income	51,715	28,958			109,486	71,477
Less: Preferred return to Series A-1 preferred OP units	1,152	1,112			3,335	3,482
Less: Amounts attributable to noncontrolling interests	4,071	1,776			8,392	4,179
Net income attributable to Sun Communities, Inc.	46,492	26,070			97,759	63,816
Less: Preferred stock distributions	432	1,955			1,305	6,233
Net income attributable to Sun Communities, Inc. common stockholders	46,060	24,115			96,454	57,583
Real Property Operations Segment [Member]
Segment Reporting Information [Line Items]
Revenues	257,215	215,280			671,695	592,864
Operating expenses/Cost of sales	101,258	82,388			253,009	221,178
Net operating income/Gross profit	155,957	132,892			418,686	371,686
Interest and other revenues, net	6,603	7,011			18,980	18,587
Home selling expenses	0	0			0	0
General and administrative	(17,187)	(15,677)			(52,966)	(49,082)
Transaction costs	(24)	(2,153)			(138)	(7,001)
Depreciation and amortization	(54,305)	(48,624)			(155,624)	(144,143)
Loss on extinguishment of debt	(939)	0			(2,657)	(759)
Interest	(33,516)	(32,082)			(96,904)	(95,754)
Interest on mandatorily redeemable preferred OP units / equity	(1,142)	(790)			(2,551)	(2,361)
Catastrophic weather related charges	173	7,718			(2,206)	8,075
Other income / (expense), net	1,230	3,345			(3,215)	5,341
Current tax (expense) / benefit	(135)	210			(366)	145
Deferred tax benefit	199	81			434	745
Net income	56,568	36,495			125,885	89,329
Less: Preferred return to Series A-1 preferred OP units	1,152	1,112			3,335	3,482
Less: Amounts attributable to noncontrolling interests	4,304	2,169			9,204	5,148
Net income attributable to Sun Communities, Inc.	51,112	33,214			113,346	80,699
Less: Preferred stock distributions	432	1,955			1,305	6,233
Net income attributable to Sun Communities, Inc. common stockholders	50,680	31,259			112,041	74,466
Home Sales and Home Rentals Segment [Member]
Segment Reporting Information [Line Items]
Revenues	59,720	45,954			162,205	129,093
Operating expenses/Cost of sales	39,831	31,869			107,772	84,820
Net operating income/Gross profit	19,889	14,085			54,433	44,273
Interest and other revenues, net	0	0			0	0
Home selling expenses	(4,043)	(3,290)			(11,319)	(9,391)
General and administrative	(2,940)	(2,497)			(8,466)	(6,830)
Transaction costs	0	(14)			0	(11)
Depreciation and amortization	(17,677)	(15,608)			(50,568)	(45,576)
Loss on extinguishment of debt	0	0			0	0
Interest	(5)	(3)			(15)	(11)
Interest on mandatorily redeemable preferred OP units / equity	0	0			0	0
Catastrophic weather related charges	0	38			219	49
Other income / (expense), net	1	0			1	(1)
Current tax (expense) / benefit	(78)	(172)			(246)	(278)
Deferred tax benefit	0	0			0	0
Net income	(4,853)	(7,537)			(16,399)	(17,852)
Less: Preferred return to Series A-1 preferred OP units	0	0			0	0
Less: Amounts attributable to noncontrolling interests	(233)	(393)			(812)	(969)
Net income attributable to Sun Communities, Inc.	(4,620)	(7,144)			(15,587)	(16,883)
Less: Preferred stock distributions	0	0			0	0
Net income attributable to Sun Communities, Inc. common stockholders	$ (4,620)	$ (7,144)			$ (15,587)	$ (16,883)

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Segment Reporting Identifiable Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Segment Reporting, Asset Reconciling Item [Line Items]
Investment property, net	$ 6,053,977	$ 5,645,354
Cash and cash equivalents	113,556	10,127	$ 137,448	$ 8,164
Inventory of manufactured homes	41,030	30,430
Notes and other receivables, net	167,698	163,496
Collateralized receivables, net	112,228	128,246
Other assets	165,237	134,304
TOTAL ASSETS	6,653,726	6,111,957
Real Property Operations Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Investment property, net	5,534,397	5,172,521
Cash and cash equivalents	86,857	(7,649)
Inventory of manufactured homes	0	0
Notes and other receivables, net	149,564	149,798
Collateralized receivables, net	112,228	128,246
Other assets	138,451	130,455
TOTAL ASSETS	6,021,497	5,573,371
Home Sales and Home Rentals Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Investment property, net	519,580	472,833
Cash and cash equivalents	26,699	17,776
Inventory of manufactured homes	41,030	30,430
Notes and other receivables, net	18,134	13,698
Collateralized receivables, net	0	0
Other assets	26,786	3,849
TOTAL ASSETS	$ 632,229	$ 538,586

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Income Taxes , Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Operating Loss Carryforwards [Line Items]
Minimum Percent of Income From Qualifying Sources to Allow For Real Estate Investment Trust Classification			95.00%
Required Minimum Percent of Taxable Income Distributed to Stock Holders			90.00%
Provision for state income taxes	$ 200	$ 38	$ (612)	$ (133)
Deferred tax benefit	199	$ 81	434	$ 745
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Deferred Tax Liabilities, Gross	$ 21,300		$ 21,300

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Earnings Per Share , Calculation of Numerator and Denominator (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator
Net income attributable to common stockholders	$ 46,060	$ 24,115	$ 96,454	$ 57,583
Allocation to restricted stock awards	(396)	(189)	(830)	(461)
Basic earnings: Net income attributable to common stockholders after allocation	45,664	23,926	95,624	57,122
Allocation to restricted stock awards	396	189	0	461
Diluted earnings: Net income attributable to common stockholders after allocation	$ 46,060	$ 24,115	$ 95,624	$ 57,583
Denominator
Weighted average common shares outstanding	81,599	78,369	80,022	75,234
Add: dilutive stock options	2	2	2	2
Add: dilutive restricted stock	480	437	0	610
Diluted weighted average common shares and securities	82,081	78,808	80,024	75,846
Basic	$ 0.56	$ 0.31	$ 1.19	$ 0.76
Diluted	$ 0.56	$ 0.31	$ 1.19	$ 0.76

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Earnings Per Share , Antidilutive Securities Excluded from Computation of Loss Per Share (Details) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	6,172	6,256
Common OP Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	2,729	2,757
Series A-1 Preferred OP Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	332	349
Series A-3 Preferred OP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	40	40
Series A-4 preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	410	425
Series A-4 Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	1,063	1,085
Series C preferred OP units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	314	316
Aspen Preferred OP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	1,284	1,284

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Fair Value of Financial Instruments , By Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financial assets
Notes and other receivables, net	$ 167,698	$ 163,496
Collateralized receivables, net	112,228	128,246
Financial liabilities
Secured debt	2,819,225	2,867,356
Lines of credit		41,257
Reported Value Measurement [Member]
Financial liabilities
Debt (excluding secured borrowings)	2,891,840	2,908,799
Lines of credit		41,257
Other liabilities (contingent consideration)	7,261	6,976
Reported Value Measurement [Member] | Installment notes receivable on manufactured homes, net [Member]
Financial assets
Notes and other receivables, net		115,797
Reported Value Measurement [Member] | Collateralized Receivables [Member]
Financial assets
Notes and other receivables, net	112,200	128,246
Reported Value Measurement [Member] | Secured Debt [Member]
Financial liabilities
Secured borrowings on collateralized receivables		129,182
Secured debt	113,089	129,182
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member]
Financial liabilities
Debt (excluding secured borrowings)	2,798,537	2,726,770
Secured borrowings on collateralized receivables	113,089
Secured debt		129,182
Lines of credit	0
Lines of credit		41,257
Other liabilities (contingent consideration)	7,261	6,976
Estimate of Fair Value Measurement [Member] | Installment notes receivable on manufactured homes, net [Member] | Fair Value, Measurements, Recurring [Member]
Financial assets
Notes and other receivables, net	117,583
Receivables		115,797
Estimate of Fair Value Measurement [Member] | Collateralized Receivables [Member] | Fair Value, Measurements, Recurring [Member]
Financial assets
Receivables		$ 128,246
Collateralized receivables, net	$ 112,228

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Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Cash and cash equivalents	$ 113,556	$ 10,127	$ 137,448	$ 8,164
Restricted cash	15,538	13,382	19,943	17,149
Cash, cash equivalents and restricted cash	$ 129,094	$ 23,509	$ 157,391	$ 25,313

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Commitments And Contingencies Commitments And Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Loss Contingency Accrual [Roll Forward]
Total estimated insurance receivable - December 31, 2017			$ 23,700
Change in estimated insurance recoveries			8,900
Advances from insurer			(16,400)
Total estimated insurance receivable - September 30, 2018	$ 16,200		16,200
Catastrophic weather related charges	$ (173)	$ (7,756)	$ (1,987)	$ (8,124)

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Subsequent Event (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Oct. 25, 2018 USD ($) development_site	Jun. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) development_site	Dec. 31, 2017 development_site
Subsequent Event [Line Items]
Payments to Acquire Land | $		$ 8.0	$ 7.5
Development Sites | development_site			1,166	18
Oak Creek | Subsequent Event
Subsequent Event [Line Items]
Payments to Acquire Land | $	$ 4.2
Development Sites | development_site	220