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 March 31, 2015

or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number: 1-12804

(Exact name of registrant as specified in its charter)

Delaware	86-0748362
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
4646 E. Van Buren Street, Suite 400 Phoenix, Arizona	85008
(Address of principal executive offices)	(zip code)

(480) 894-6311

(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, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

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

At April 24, 2015, there were outstanding 45,832,303 shares of the registrant’s common stock, par value $.01.

MOBILE MINI, INC.

INDEX TO FORM 10-Q FILING

FOR THE QUARTER ENDED MARCH 31, 2015

	PAGE
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements
Condensed Consolidated Balance Sheets March 31, 2015 (unaudited) and December 31, 2014		3
Condensed Consolidated Statements of Operations (unaudited) Three Months Ended March 31, 2015 and March  31, 2014		4
Condensed Consolidated Statements of Comprehensive (Loss) Income (unaudited) Three Months Ended March  31, 2015 and March 31, 2014		4
Condensed Consolidated Statements of Cash Flows (unaudited) Three Months Ended March 31, 2015 and March  31, 2014		5
Notes to Condensed Consolidated Financial Statements (unaudited)		6
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations		25
Item 3. Quantitative and Qualitative Disclosures About Market Risk		34
Item 4. Controls and Procedures		34
PART II. OTHER INFORMATION
Item 1a. Risk Factors		35
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds		35
Item 6. Exhibits		36

2

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

MOBILE MINI, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands except par value data)

	March 31, 2015			December 31, 2014
	(unaudited)			(audited)
ASSETS
Cash and cash equivalents	$	3,048		$	3,739
Receivables, net of allowance for doubtful accounts of $3,307 and $2,442 at March 31, 2015 and December 31, 2014, respectively		79,004			81,031
Inventories		16,518			16,736
Rental fleet, net		1,019,663			1,087,056
Property, plant and equipment, net		116,735			113,175
Deposits and prepaid expenses		7,501			8,586
Deferred financing costs, net and other assets		8,173			8,858
Intangibles, net		76,965			78,385
Goodwill		703,337			705,608
Total assets	$	2,030,944		$	2,103,174
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable	$	30,465		$	22,933
Accrued liabilities		64,590			63,727
Lines of credit		701,381			705,518
Obligations under capital leases		26,270			24,918
Senior Notes		200,000			200,000
Deferred income taxes		213,365			231,547
Total liabilities		1,236,071			1,248,643
Commitments and contingencies
Stockholders’ equity:
Preferred stock $.01 par value, 20,000 shares authorized, none issued		—			—
Common stock $.01 par value, 95,000 shares authorized, 49,087 issued and 45,835 outstanding at March 31, 2015 and 49,015 issued and 46,157 outstanding at December 31, 2014		491			490
Additional paid-in capital		572,364			569,083
Retained earnings		344,625			380,504
Accumulated other comprehensive loss		(41,647	)		(29,870	)
Treasury stock, at cost, 3,252 and 2,858 shares at March 31, 2015 and December 31, 2014, respectively		(80,960	)		(65,676	)
Total stockholders’ equity		794,873			854,531
Total liabilities and stockholders’ equity	$	2,030,944		$	2,103,174

See accompanying notes to condensed consolidated financial statements (unaudited).

3

MOBILE MINI, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands except per share data)

(Unaudited)

	Three Months Ended March 31
	2015			2014
Revenues:
Rental	$	121,028		$	94,080
Sales		6,724			7,866
Other		4,877			458
Total revenues		132,629			102,404
Costs and expenses:
Rental, selling and general expenses		83,982			68,356
Cost of sales		4,197			5,553
Restructuring expenses		483			585
Asset impairment charge, net		64,726			283
Depreciation and amortization		15,539			9,145
Total costs and expenses		168,927			83,922
(Loss) income from operations		(36,298	)		18,482
Other expense:
Interest expense		(9,059	)		(6,987	)
Foreign currency exchange		—			(1	)
(Loss) income before income tax (benefit) provision		(45,357	)		11,494
Income tax (benefit) provision		(18,031	)		4,054
Net (loss) income	$	(27,326	)	$	7,440
(Loss) earnings per share:
Basic	$	(0.60	)	$	0.16
Diluted		(0.60	)		0.16
Weighted average number of common and common share equivalents outstanding:
Basic		45,484			46,148
Diluted		45,484			46,837
Cash dividends declared per share	$	0.19		$	0.17

MOBILE MINI, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME

(In thousands)

(Unaudited)

	Three Months Ended March 31
	2015			2014
Net (loss) income	$	(27,326	)	$	7,440
Foreign currency translation adjustment		(11,777	)		1,180
Comprehensive (loss) income	$	(39,103	)	$	8,620

See accompanying notes to condensed consolidated financial statements (unaudited).

4

MOBILE MINI, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Three Months Ended March 31,
	2015			2014
Cash Flows from Operating Activities:
Net (loss) income	$	(27,326	)	$	7,440
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge, net		64,726			283
Provision for doubtful accounts		1,169			547
Amortization of deferred financing costs		789			703
Amortization of long-term liabilities		25			41
Share-based compensation expense		3,250			4,164
Depreciation and amortization		15,539			9,145
Gain on sale of rental fleet units		(1,972	)		(1,711	)
Loss on disposal of property, plant and equipment		335			72
Deferred income taxes		(18,233	)		3,954
Foreign currency loss		—			1
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables		(636	)		778
Inventories		157			228
Deposits and prepaid expenses		446			(1,276	)
Other assets and intangibles		9			(5	)
Accounts payable		1,033			3,061
Accrued liabilities		(839	)		(613	)
Net cash provided by operating activities		38,472			26,812
Cash Flows from Investing Activities:
Cash paid for businesses acquired, net of cash acquired		(1,200	)		(4,217	)
Additions to rental fleet, excluding acquisitions		(10,480	)		(4,078	)
Proceeds from sale of rental fleet units		4,842			5,627
Additions to property, plant and equipment, excluding acquisitions		(4,241	)		(2,628	)
Proceeds from sale of property, plant and equipment		607			908
Net cash used in investing activities		(10,472	)		(4,388	)
Cash Flows from Financing Activities:
Net repayments under lines of credit		(4,137	)		(16,307	)
Deferred financing costs		(100	)		—
Principal payments on capital lease obligations		(849	)		(367	)
Issuance of common stock		32			1,949
Dividend payments		(8,509	)		(7,849	)
Purchase of treasury stock		(15,284	)		(407	)
Net cash used in financing activities		(28,847	)		(22,981	)
Effect of exchange rate changes on cash		156			(132	)
Net decrease in cash		(691	)		(689	)
Cash and cash equivalents at beginning of period		3,739			1,256
Cash and cash equivalents at end of period	$	3,048		$	567
Supplemental Disclosure of Cash Flow Information:
Equipment acquired through capital lease obligations	$	2,201		$	1,983
Capital expenditures accrued or payable		9,624			1,246

See accompanying notes to condensed consolidated financial statements (unaudited).

5

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

(1) Mobile Mini, Organization and Description of Business

Mobile Mini, Inc., a Delaware corporation, is a leading provider of portable storage and specialty containment solutions. In these notes, the terms “Mobile Mini” and the “Company” refer to Mobile Mini, Inc. In December 2014, the Company acquired Gulf Tanks Holdings, Inc. (“GTH”), the parent company of Houston, Texas-based Evergreen Tank Solutions (“ETS”). The transaction, referred to as the “ETS Acquisition,” closed on December 10, 2014.

At March 31, 2015, Mobile Mini has a fleet of portable storage units operating throughout the U.S., Canada and the U.K. The Company has a diversified customer base for its portable storage products, including large and small retailers, construction companies, medical centers, schools, utilities, distributors, the military, hotels, restaurants, entertainment complexes and households. These customers use the products for a wide variety of applications, including the storage of retail and manufacturing inventory, construction materials and equipment, and documents and records. The ETS Acquisition resulted in a fleet of specialty containment products, including liquid and solid containment units, serving a specialty sector in the industry. Specialty products are rented primarily to chemical, refinery, oil and natural gas drilling, mining and environmental service customers. The operating results of ETS are included in the three month period ended March 31, 2015.

Basis of Presentation and Consolidation

The consolidated financial statements include the accounts of Mobile Mini and its wholly owned subsidiaries. The Company does not have any subsidiaries in which it does not own 100% of the outstanding stock. All significant intercompany balances and transactions have been eliminated. The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applicable to interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management of Mobile Mini, Inc., all adjustments (which include normal recurring adjustments) necessary to present fairly the financial position, results of operations, and cash flows for all periods presented have been made. The results of operations for the three months ended March 31, 2015 and 2014 are not necessarily indicative of the results to be expected for the full year.

These condensed consolidated financial statements should be read in conjunction with the Company’s December 31, 2014 audited consolidated financial statements and accompanying notes thereto, which are included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on February 27, 2015.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and the notes to those statements. Actual results could differ from those estimates. The most significant estimates included within the financial statements are the allowance for doubtful accounts, the estimated useful lives and residual values on the rental fleet, property, plant and equipment, goodwill and other asset impairments and certain accrued liabilities.

(2) Recent Accounting Pronouncements

Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. In April 2014, the Financial Accounting Standards Board (“FASB”) issued the accounting guidance on reporting discontinued operations and disclosures of disposals of components of an entity. The new guidance raises the threshold for a disposal to qualify as a discontinued operation and requires new disclosures of both discontinued operations and certain other disposals that do not meet the definition of a discontinued operation. The guidance is effective for fiscal years beginning after December 15, 2014. The Company will apply this guidance prospectively to transactions occurring after December 31, 2014.

6

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

Revenue from Contracts with Customers. In May 2014, FASB issued the accounting standard on revenue from contracts with customers. The standard provides a single model for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The standard requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of goods or services. The standard is effective for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted. The revenue recognition standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the impact, if any, of the adoption of the standard to its financial statements and related disclosures. The Company has not yet selected a transition method nor determined the effect of the standard on its ongoing financial reporting.

Simplifying the Presentation of Debt Issuance Costs. In April 2015, FASB issued accounting guidance on the presentation of debt issuance costs in the balance sheet. This standard requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by this guidance. The Company will apply this guidance prospectively beginning in the fiscal year ended December 31, 2017. The application of this guidance will result in a reclassification of debt financing costs from other assets to a reduction of the specific debt liability, and will not affect the Company’s statement of operations or cash flow. As of March 31, 2015, the Company’s debt financing costs, net of accumulated amortization is $8.0 million.

(3) Fair Value Measurements

The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the Company adopted the suggested accounting guidance for the three levels of inputs that may be used to measure fair value:     

Level 1 —	Observable inputs such as quoted prices in active markets for identical assets or liabilities;
Level 2 —	Observable inputs, other than Level 1 inputs in active markets, that are observable either directly or indirectly; and
Level 3 —	Unobservable inputs for which there is little or no market data, which require the reporting entity to develop its own assumptions.

At March 31, 2015 and December 31, 2014, the Company did not have any financial instruments required to be recorded at fair value on a recurring basis.

The carrying amounts of cash, receivables, accounts payable and accrued liabilities approximate fair values based on their short-term nature. The fair values of the Company’s revolving credit facility and capital leases are estimated using discounted cash flow analyses, based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements. Based on the borrowing rates currently available to the Company for bank loans with similar terms and average maturities, the fair value of the Company’s revolving credit facility debt and capital leases at March 31, 2015 and December 31, 2014 approximated their respective book values and are considered Level 2 in the fair value hierarchy.

The fair value of the Company’s $200.0 million aggregate principal amount of 7.875% senior notes due 2020 (the “2020 Notes” or the “Senior Notes”) is based on their latest sales price at the end of each period obtained from a third-party institution and is considered Level 2 in the fair value hierarchy, as there is not an active market for these notes.

The carrying value and the fair value of the Company’s Senior Notes are as follows:

	March 31, 2015		December 31, 2014
	(In thousands)
Carrying value	$	200,000	$	200,000
Fair value		211,000		206,000

7

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

(4) (Loss) Earnings Per Share

Basic (loss) earnings per share (“EPS”) is calculated by dividing net (loss) income by the weighted average number of common shares outstanding during the period. Diluted EPS is calculated under the treasury stock method. Potential common shares included nonvested share-awards, which is subject to risk of forfeiture, and incremental shares of common stock issuable upon the exercise of stock options.

The following table is a reconciliation of net (loss) income and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted EPS for the three months ended March 31:

	Three Months Ended March 31,
	2015			2014
	(In thousands, except per share data)
Numerator:
Net (loss) income	$	(27,326	)	$	7,440
Basic EPS Denominator:
Common shares outstanding beginning of year		45,814			46,084
Weighted shares issued (repurchased) during the period		(330	)		64
Total weighted average shares outstanding		45,484			46,148
Diluted EPS Denominator:
Common shares outstanding beginning of year		45,814			46,084
Net weighted shares issued (repurchased) during the period		(330	)		64
Dilutive effect of stock options and nonvested share awards during the period (1)		—			689
Total weighted average shares outstanding		45,484			46,837
(Loss) earnings per share:
Basic	$	(0.60	)	$	0.16
Diluted		(0.60	)		0.16

(1) Common stock equivalents of approximately 570,000 were excluded from the calculation of diluted earnings per share for the quarter ending March 31, 2015 because their inclusion would reduce the net loss per share.

Basic weighted average number of common shares outstanding does not include nonvested share-awards of 0.4 million and 0.5 million shares as of March 31, 2015 and 2014, respectively.

The following table represents the number of stock options and nonvested share-awards that were issued or outstanding but excluded in calculating diluted EPS because their effect would have been anti-dilutive for the quarters ended March 31:

	Three Months Ended March 31,
	2015		2014
	(In thousands)
Stock options		1,108		641
Nonvested share-awards		—		—
Total		1,108		641

8

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

(5) Impairment of North American Wood Mobile Offices

Mobile Mini’s business strategy is to invest in high return, low maintenance, long-lived assets. Wood mobile offices require more maintenance and upkeep than Mobile Mini’s stainless steel ground level offices and containers, resulting in lower margins as compared to other portable storage products, as well as the newly-acquired specialty containment products. During March 2015, the Company entered into discussions regarding the possible sale of Mobile Mini’s wood mobile offices within its North American Portable Storage segment. The discussions indicated that the fleet might be sold at an amount below carrying value. (See additional discussion regarding the divestiture of the wood mobile offices in Note 18.)

Mobile Mini reviews long-lived assets such as rental fleet, property, plant and equipment, and intangibles, for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may be impaired. Based upon the events described above, the Company conducted a review for impairment for these particular long-lived assets as of March 31, 2015. The review included assumptions of cash flows considering the likelihood of possible outcomes that existed as of the date of the review, including assigning probabilities to the outcomes. Management estimated fair market value for the wood mobile offices based upon purchase price discussions. Based on this review, management determined that the assets were impaired as of March 31, 2015 and an impairment loss, was recognized in the amount by which the carrying amount of the asset group exceeded the estimated fair value as follows:

	March 31, 2015
	(In thousands)
Estimated fair market value	$	92,000
Net book value:
Wood mobile offices in rental fleet		155,558
Ancillary items in property, plant and equipment		1,168
Impairment loss	$	(64,726	)

(6) Acquisition

In the three months ended March 31, 2015, Mobile Mini completed one acquisition of a portable storage business. This acquisition expanded the Company’s existing operations in the Glasgow, Scotland market. The accompanying consolidated financial statements include the operations of the acquired business from the date of acquisition. The aggregate purchase price for the assets acquired were recorded based on their estimated fair values at the date of the acquisition. The Company has not disclosed the pro-forma impact of the acquisition on operations as it was immaterial to the Company’s financial position in the aggregate.

The components of the purchase price and net assets acquired during the three months ended March 31, 2015 are as follows (in thousands):

Net Assets Acquired:
Rental fleet	$	991
Intangible assets:
Customer relationships		57
Non-compete agreements		24
Goodwill		128
Total purchase price	$	1,200

(7) Inventories

Inventories are valued at the lower of cost (principally on a standard cost basis which approximates the first-in, first-out (“FIFO”) method) or market. Market is the lower of replacement cost or net realizable value.

Raw materials principally consist of raw steel, wood, glass, paint, vinyl and other assembly components used in manufacturing and remanufacturing processes, and to a lesser extent, parts used for internal maintenance, and ancillary items held for sale in our specialty containment segment. Work-in-process primarily represents partially assembled units pre-sold or for use as fleet. Finished portable storage units primarily represent purchased or assembled containers held in inventory until the container is either sold as is, remanufactured and sold, or remanufactured and deployed as rental fleet.

9

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

Inventories at March 31, 2015 and December 31, 2014 consisted of the following:

	March 31, 2015		December 31, 2014
	(In thousands)
Raw materials and supplies	$	14,569	$	14,241
Work-in-process		212		201
Finished portable storage units		1,737		2,294
Inventories	$	16,518	$	16,736

(8) Rental Fleet

Rental fleet is capitalized at cost and depreciated over the estimated useful life of the unit using the straight-line method. Rental fleet is depreciated whether or not it is out on rent. Capitalized cost of rental fleet includes the price paid to acquire the unit and freight charges to the location when the unit is first placed in service, and when applicable, the cost of manufacturing or remanufacturing, which includes the cost of customizing units. Ordinary repair and maintenance costs are charged to operations as incurred.

Management periodically reviews depreciable lives and residual values against various factors, including the results of its lenders’ independent appraisal of rental fleet, practices of competitors in comparable industries, profit margins achieved on sales of depreciated units and rental rates obtained on older units. See Note 5 for information regarding the impairment of wood mobile offices during the quarter ended March 31, 2015.

Appraisals on our portable storage fleet are conducted on a regular basis by an independent appraiser selected by our lenders. Based on the values assigned in the most recent appraisal as of September 30, 2014, our portable storage rental fleet net liquidation value was approximately $1.0 billion as of March 31, 2015. In addition, an appraisal of our specialty product fleet was conducted as of December 2014 in conjunction with the ETS Acquisition. Based upon the values assigned in this appraisal, our specialty product rental fleet net liquidation value was approximately $90.7 million as of March 31, 2015. These appraisals were conducted by AccuVal Associates, Incorporated and are used to calculate our available borrowings under our Credit Agreement, as defined in Note 11.

The Company’s depreciation expense related to its rental fleet for the three months ended March 31, 2015 and 2014 was $9.2 million and $5.3 million, respectively. At March 31, 2015 and December 31, 2014, all of the Company’s rental fleet units were pledged as collateral under the Credit Agreement.

10

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

Rental fleet consisted of the following at March 31, 2015 and December 31, 2014:

	Residual Value as Percentage of Original Cost (1)			Useful Life in Years	March 31, 2015			December 31, 2014
					(In thousands)
Portable Storage:
Steel storage containers		55	%	30	$	602,360		$	604,547
Ground level offices		55	%	30		330,891			329,565
Wood mobile offices		50	%	20		143,894			208,529
Other						5,230			5,633
Total						1,082,375			1,148,274
Accumulated depreciation						(186,209	)		(182,437	)
Total portable storage fleet, net					$	896,166		$	965,837
Specialty Containment:
Steel tanks				25	$	52,031		$	50,843
Roll-off boxes				15 - 20		23,247			19,820
Stainless steel tank trailers				25		8,189			7,667
Vacuum boxes				20		23,287			23,283
De-watering boxes				20		4,271			3,898
Pumps and filtration equipment				7		11,655			11,510
Other						5,954			5,468
Total						128,634			122,489
Accumulated depreciation						(5,137	)		(1,270	)
Total specialty containment fleet, net					$	123,497		$	121,219
Total rental fleet, net					$	1,019,663		$	1,087,056

(1) Specialty containment fleet has been assigned zero residual value.

(9) Property, Plant and Equipment

Property, plant and equipment are stated at cost, net of accumulated depreciation. Depreciation is provided using the straight-line method over the assets’ estimated useful lives. The Company’s depreciation expense related to property, plant and equipment for the three months ended March 31, 2015 and 2014 was $4.9 million and $3.5 million, respectively. Normal repairs and maintenance to property, plant and equipment are expensed as incurred. When property or equipment is retired or sold, the net book value of the asset, reduced by any proceeds, is charged to gain or loss on the disposal of property, plant and equipment and is included in rental, selling and general expenses in the Consolidated Statements of Operations. See Note 5 for information regarding the impairment of ancillary equipment related to wood mobile offices during the quarter ended March 31, 2015.

Property, plant and equipment at March 31, 2015 and December 31, 2014 consisted of the following:

	Residual Value as Percentage of Original Cost	Useful Life in Years	March 31, 2015			December 31, 2014
			(In thousands)
Land			$	10,848		$	10,920
Vehicles and machinery	0 - 55%	5 - 30		114,860			114,150
Buildings and improvements (1)	0 - 25	3 - 30		19,489			19,365
Office fixtures and equipment	0	3 - 5		35,198			33,942
Property, plant and equipment				180,395			178,377
Accumulated depreciation				(63,660	)		(65,202	)
Property, plant and equipment, net			$	116,735		$	113,175

(1) Improvements made to leased properties are amortized over the lesser of the estimated remaining life or the remaining term of the respective lease.

11

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

(10) Goodwill and Intangibles

For acquired businesses, the Company records assets acquired and liabilities assumed at their estimated fair values on the respective acquisition dates. Based on these values, the excess purchase prices over the fair value of the net assets acquired is recorded as goodwill. Estimated fair values of acquired assets is provisional and could change as additional information is received. During the current quarter, primarily due to further analysis of the assets acquired in the ETS acquisition, the associated goodwill was adjusted upward by $0.9 million.

The following table shows the activity and balances related to goodwill from January 1, 2015 to March 31, 2015:

	(In thousands)
Balance at January 1, 2015	$	705,608
Acquisition		128
Foreign currency		(3,318	)
Adjustments		919
Balance at March 31, 2015	$	703,337

Intangible assets are amortized over the estimated useful life of the asset utilizing a method which reflects the estimated pattern in which the economic benefits will be consumed. Customer relationships and certain trade names and trademarks, are amortized using an accelerated method while other intangibles are amortized using the straight-line method.

The following table reflects balances related to intangible assets for the periods presented:

		March 31, 2015							December 31, 2014
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
		(In thousands)
Customer relationships	11 - 20	$	91,642	$	(21,294	)	$	70,348	$	91,990	$	(20,484	)	$	71,506
Trade names/trademarks	1 - 5		6,027		(1,078	)		4,949		6,065		(919	)		5,146
Non-compete agreements	2 - 5		1,796		(167	)		1,629		1,772		(78	)		1,694
Other	1 - 19		60		(21	)		39		61		(22	)		39
Total		$	99,525	$	(22,560	)	$	76,965	$	99,888	$	(21,503	)	$	78,385

Amortization expense for amortizable intangibles was approximately $1.5 million and $0.3 million for the three-month periods ended March 31, 2015 and 2014, respectively. Based on the carrying value at March 31, 2015, future amortization of intangible assets is expected to be as follows for the years ended December 31 (in thousands):

2015 (remaining)	$	4,387
2016		5,931
2017		5,921
2018		5,973
2019		6,011
Thereafter		48,742
Total	$	76,965

(11) Lines of Credit

The Company has a $1.0 billion ABL Credit Agreement with Deutsche Bank AG New York Branch and other lenders party thereto (the “Credit Agreement”). The Credit Agreement provides for a five-year, revolving credit facility and all amounts outstanding under the Credit Agreement are due on February 22, 2017. The obligations of Mobile Mini and its subsidiary guarantors under the Credit Agreement are secured by a blanket lien on substantially all of its assets.

Amounts borrowed under the Credit Agreement and repaid or prepaid during the term may be reborrowed. Outstanding amounts under the Credit Agreement bear interest at the Company’s option at either: (i) LIBOR plus a defined margin, or (ii) the Agent bank’s prime rate plus a margin. The applicable margin for each type of loan is based on an availability-based pricing grid and ranges from 1.75% to 2.25% for LIBOR loans and 0.75% to 1.25% for base rate loans at each measurement date. As of March 31, 2015, the applicable margins are 2.00% for LIBOR loans and 1.00% for base rate loans.

12

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

Availability of borrowings under the Credit Agreement is subject to a borrowing base calculation based upon a valuation of the Company’s eligible accounts receivable, eligible container fleet (including containers held for sale, work-in-process and raw materials) and machinery and equipment, each multiplied by an applicable advance rate or limit. The rental fleet is appraised at least once annually by a third-party appraisal firm and up to 90% of the net orderly liquidation value, as defined in the Credit Agreement, is included in the borrowing base to determine how much the Company may borrow under the Credit Agreement.

The Credit Agreement provides for U.K. borrowings, which are, at the Company’s option, denominated in either Pounds Sterling or Euros, by its U.K. subsidiary based upon a U.K. borrowing base; Canadian borrowings, which are denominated in Canadian dollars, by its Canadian subsidiary based upon a Canadian borrowing base; and U.S. borrowings, which are denominated in U.S. dollars, by the Company based upon a U.S. borrowing base along with any Canadian assets not included in the Canadian subsidiary.

The Credit Agreement also contains customary negative covenants, including covenants that restrict the Company’s ability to, among other things: (i) allow certain liens to attach to the Company or its subsidiary assets; (ii) repurchase or pay dividends or make certain other restricted payments on capital stock and certain other securities, prepay certain indebtedness or make acquisitions or other investments subject to Payment Conditions (as defined in the Credit Agreement); and (iii) incur additional indebtedness or engage in certain other types of financing transactions. Payment Conditions allow restricted payments and acquisitions to occur without financial covenants as long as the Company has $250.0 million of pro forma excess borrowing availability under the Credit Agreement. The Company must also comply with specified financial maintenance covenants and affirmative covenants only if the Company falls below $100.0 million of borrowing availability levels with set permitted values for the Debt Ratio and Fixed Charge Coverage Ratio (as defined in the Credit Agreement). The Company was in compliance with the terms of the Credit Agreement as of March 31, 2015, and was above the minimum borrowing availability threshold and therefore not subject to any financial maintenance covenants.

(12) Income Taxes

The Company files U.S. Federal tax returns, U.S. state tax returns and foreign tax returns. The Company has identified its U.S. Federal tax return as its “major” tax jurisdiction. For the U.S. Federal return, its tax years for 2011, 2012 and 2013 are subject to tax examination by the U.S. Internal Revenue Service through September 15, 2015, 2016 and 2017, respectively. The Company does not anticipate that the total amount of unrecognized tax benefit related to any particular tax position will change significantly within the next 12 months.

The Company uses a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement.

The Company’s policy for recording interest and penalties associated with audits is to record such items as a component of income before taxes. Penalties and associated interest costs, if any, are recorded in rental, selling and general expenses in its Condensed Consolidated Statements of Operations.

(13) Share-based Compensation

The Company has historically awarded stock options and nonvested share-awards for employees and non-employee directors as a means of attracting and retaining quality personnel and to align employee performance with stockholder value. Stock option plans are approved by the Company’s stockholders and administered by the compensation committee of the board of directors (“Board”). The current plan allows for a variety of equity programs designed to provide flexibility in implementing equity and cash awards, including incentive stock options, nonqualified stock options, nonvested share-awards, restricted stock units, stock appreciation rights, performance stock, performance units and other share-based awards. Participants may be granted any one of the equity awards or any combination. The Company does not award stock options with an exercise price below the market price of the underlying securities on the date of award. As of March 31, 2015, 2.5 million shares remain available for future grants. Generally stock options have contractual terms of ten years.

For both the quarters ended March 31, 2015 and 2014, all share-based compensation is included in rental, selling and general expenses. As of March 31, 2015, total unrecognized compensation cost related to stock option awards was approximately $10.1 million and the related weighted-average period over which it is expected to be recognized is approximately 1.7 years. As of March 31, 2015, the unrecognized compensation cost related to nonvested share-awards was approximately $9.9 million, which is expected to be recognized over a weighted-average period of approximately 2.6 years.

13

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

Stock options. The fair value of each stock option award is estimated on the date of the grant using the Black-Scholes option pricing model which requires the input of assumptions. Management estimates the risk-free interest rate based on the U.S. Treasury security rate in effect at the time of the grant. The expected life of the options, volatility and dividend rates are estimated based on the Company’s historical data. The following are the key assumptions used for options granted during the three month periods ended March 31:

	2015	2014
Risk-free interest rate	1.3% - 1.5%		1.5	%
Expected life of the options (years)	5		5
Expected stock price volatility	35.6% - 35.7%		38.4	%
Expected dividend rate	1.8% - 2.0%		1.6	%

The following table summarizes stock option activity for the three months ended March 31, 2015 (share amounts in thousands):

	Number of Shares			Weighted Average Exercise Price
Options outstanding, beginning of period		2,649		$	32.33
Granted		363			42.80
Canceled/Expired		(16	)		45.72
Exercised		(1	)		25.43
Options outstanding, end of period		2,995			33.53

A summary of stock options outstanding as of March 31, 2015, is as follows:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Terms		Aggregate Intrinsic Value
	(In thousands)				(In years)		(In thousands)
Outstanding		2,995	$	33.53		8.11	$	28,595
Vested and expected to vest		2,887		33.28		8.07		28,242
Exercisable		1,659		30.80		7.68		19,997

The aggregate intrinsic value of options exercised during the three months ended March 31, 2015, was approximately $23,000 and the weighted average fair value of stock options granted was $8.42.

Nonvested share-awards. The fair value of nonvested share-awards is estimated as the closing price of Mobile Mini’s common stock on the date of grant. A summary of nonvested share-awards activity is as follows (share amounts in thousands):

	Shares			Weighted Average Grant Date Fair Value
Nonvested at beginning of period		343		$	27.99
Awarded		81			37.22
Released		(29	)		34.78
Forfeited		(11	)		24.14
Nonvested at end of period		384			29.57

The total fair value of nonvested share-awards that vested during the three months ended March 31, 2015 was $1.0 million.

14

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

(14) Restructuring Costs

The Company’s restructuring costs in the three month periods ended March 31, 2015 and 2014, include the following actions to align its business operations, some of which were begun in previous periods: the termination of the consumer initiative program in the third quarter of 2012, the sale of the Company’s Belfast, North Ireland location in the second quarter of 2014, the realignment of the Company’s corporate organization, field management and sales force structures in North America throughout 2014, and additional field restructuring in 2015 to facilitate the integration of ETS. The accrued restructuring obligations as of March 31, 2015 were related to the Company’s operations in North America.

The following table details accrued restructuring obligations (included in accrued liabilities in the Consolidated Balance Sheets) and related activity for the year ended December 31, 2014 and the three-month period ended March 31, 2015.

	Severance and Benefits			Lease Abandonment Costs			Other Costs			Total
	(In thousands)
Accrued obligations as of January 1, 2014	$	613		$	1,063		$	—		$	1,676
Restructuring expense		1,826			318			1,398			3,542
Settlement of obligations		(1,998	)		(705	)		(1,398	)		(4,101	)
Accrued obligations as of December 31, 2014		441			676			—			1,117
Restructuring expense		464			19			—			483
Settlement of obligations		(157	)		(61	)		—			(218	)
Accrued obligations as of March 31, 2015	$	748		$	634		$	—		$	1,382

The majority of accrued obligations are expected to be paid out through the year 2015, with the exception of a lease that will continue into the first quarter of 2019.

The following amounts are included in restructuring expense for the periods indicated:

	Three Months Ended March 31,
	2015		2014
	(In thousands)
Severance and benefits	$	464	$	340
Lease abandonment costs		19		139
Other costs (1)		—		106
Restructuring expenses	$	483	$	585

(1) Other costs for 2014 include the sale of the Company’s Belfast, Northern Ireland location.

(15) Commitments and Contingencies

Mobile Mini is a party to various claims and litigation in the normal course of business. Management’s current estimated range of liability related to various claims and pending litigation is based on claims for which management can determine that it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Because of the uncertainties related to both the probability of incurred and possible range of loss on pending claims and litigation, management must use considerable judgment in making a reasonable determination of the liability that could result from an unfavorable outcome. As additional information becomes available estimates will be revised as appropriate. Management does not anticipate the resolution of such matters known at this time will have a material adverse effect on our business or consolidated financial position.

(16) Stockholders’ Equity

Dividends

On January 21, 2015, the board of directors authorized and declared a cash dividend to all the Company’s common stockholders of $0.187 per share of common stock, paid on March 19, 2015 to stockholders of record as of the close of business on March 5, 2015. Each future quarterly dividend payment is subject to review and approval by the Board. In addition, the Company’s Credit Agreement contains restrictions on the declaration and payment of dividends.

15

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

Treasury stock

On November 6, 2013, the Board approved a share repurchase program authorizing up to $125.0 million of the Company’s outstanding shares of common stock to be repurchased. The shares may be repurchased from time to time in the open market or in privately negotiated transactions. The share repurchases are subject to prevailing market conditions and other considerations. The share repurchase program does not have an expiration date and may be suspended or terminated at any time by the Board. All shares repurchased are held in treasury.

During the three months ended March 31, 2015, the Company purchased approximately 387,000 shares of its common stock at a cost of $15.0 million under the authorized share repurchase program, and approximately $85.0 million is available for repurchase as of March 31, 2015. In addition, the Company withheld approximately 7,000 shares of stock from employees, for an approximate value of $276,000, upon vesting of share awards to satisfy minimum tax withholding obligations. These shares were not acquired pursuant to the share repurchase program.

(17) Segment Reporting

Prior to the ETS Acquisition, the Company’s operations were comprised of two reportable segments: North America and the U.K., both of which offer portable storage solutions. Discrete financial data on each of the Company’s products is not available and it would be impractical to collect and maintain financial data in such a manner. As a result of the ETS Acquisition, the Company established a new specialty containment reporting segment. Operations related to ETS are included in Mobile Mini’s consolidated results for the three months ended March 31, 2015.

The results for each segment are reviewed discretely by senior management. Within their segment, locations generally have similar economic characteristics covering all products rented or sold, including customer base, sales personnel, advertising, yard facilities, general and administrative costs and field operations management.

All of the Company’s locations operate in their local currency and, although the Company is exposed to foreign exchange rate fluctuation in foreign markets where the Company rents and sells its products, the Company does not believe such exposure will have a significant impact on its results of operations.

The following tables set forth certain information regarding each of the Company’s segments for the three month periods ended March 31, 2015 and 2014.

	For the Three Months Ended March 31, 2015
	Portable Storage
	North America			United Kingdom		Total			Specialty Containment		Consolidated
	(In thousands)
Revenues:
Rental	$	78,984		$	20,020	$	99,004		$	22,024	$	121,028
Sales		4,983			979		5,962			762		6,724
Other		1,439			90		1,529			3,348		4,877
Total revenues		85,406			21,089		106,495			26,134		132,629
Costs and expenses:
Rental, selling and general expenses		53,580			13,652		67,232			16,750		83,982
Cost of sales		3,122			742		3,864			333		4,197
Restructuring expenses		217			—		217			266		483
Asset impairment charge, net		64,726			—		64,726			—		64,726
Depreciation and amortization		7,890			1,576		9,466			6,073		15,539
Total costs and expenses		129,535			15,970		145,505			23,422		168,927
(Loss) income from operations	$	(44,129	)	$	5,119	$	(39,010	)	$	2,712	$	(36,298	)
Interest expense, net of interest income	$	6,149		$	218	$	6,367		$	2,692	$	9,059
Income tax (benefit) provision		(18,998	)		959		(18,039	)		8		(18,031	)

16

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

	For the Three Months Ended March 31, 2014
	Portable Storage
	North America		United Kingdom		Total		Specialty Containment		Consolidated
	(In thousands)
Revenues:
Rental	$	75,483	$	18,597	$	94,080	$	—	$	94,080
Sales		6,578		1,288		7,866		—		7,866
Other		354		104		458		—		458
Total revenues		82,415		19,989		102,404		—		102,404
Costs and expenses:
Rental, selling and general expenses		54,707		13,649		68,356		—		68,356
Cost of sales		4,590		963		5,553		—		5,553
Restructuring expenses		397		188		585		—		585
Asset impairment charge, net		159		124		283		—		283
Depreciation and amortization		7,418		1,727		9,145		—		9,145
Total costs and expenses		67,271		16,651		83,922		—		83,922
Income from operations	$	15,144	$	3,338	$	18,482	$	—	$	18,482
Interest expense, net of interest income	$	6,717	$	270	$	6,987	$	—	$	6,987
Income tax provision		3,299		755		4,054		—		4,054

The previous schedules include revenues in the U.S. of $110.5 million and $81.1 million for the three month periods ended March 31, 2015 and 2014, respectively.

Assets related to the Company’s segments include the following:

	Portable Storage
	North America		United Kingdom		Total		Specialty Containment		Consolidated
	(In thousands)
As of March 31, 2015:
Goodwill	$	458,852	$	61,634	$	520,486	$	182,851	$	703,337
Intangibles		1,912		618		2,530		74,435		76,965
Rental Fleet		755,434		140,732		896,166		123,497		1,019,663
Property Plant and Equipment		87,153		15,511		102,664		14,071		116,735
As of December 31, 2014:
Goodwill	$	459,234	$	64,402	$	523,636	$	181,972	$	705,608
Intangibles		2,119		651		2,770		75,615		78,385
Rental Fleet		825,158		140,679		965,837		121,219		1,087,056
Property Plant and Equipment		82,514		16,488		99,002		14,173		113,175

The previous schedules include assets in the U.S. of $1.7 billion as of March 31, 2015 and December 31, 2014.

(18) Subsequent Events

Divestiture of North American wood mobile office fleet

On April 16, 2015 the Company entered into a definitive agreement to sell its wood mobile offices within its North American Portable Storage segment for a cash price of $92.0 million. See Note 5 for information regarding the $64.7 million impairment related to these assets recorded during the quarter ended March 31, 2015. The transaction is expected to be completed in May 2015, at which time the Company expects to recognize approximately $2 million of divestiture-related expenses. Cash received will be net of approximately $6.6 million of deferred revenue related to these products.

17

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

Increase to treasury stock repurchase program.

On April 17, 2015, Mobile Mini’s Board approved a $50 million increase in the current share repurchase program to $175 million. Through April 30, 2015, the Company has repurchased $40.0 million of shares under this program and approximately $135.0 million is available for repurchase as of April 30, 2015.

Declaration of quarterly dividend

On April 29, 2015, the Company’s Board authorized and declared a quarterly dividend to all the Company’s common stockholders of $0.187 per share of common stock, payable on June 3, 2015 to all stockholders of record as of the close of business on May 20, 2015.

18

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

(19) Condensed Consolidating Financial Information

The following tables reflect the condensed consolidating financial information of the Company’s subsidiary guarantors of the Senior Notes and its non-guarantor subsidiaries. Separate financial statements of the subsidiary guarantors are not presented because the guarantee by each 100% owned subsidiary guarantor is full and unconditional, joint and several, subject to customary exceptions, and management has determined that such information is not material to investors.

MOBILE MINI, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

As of March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
ASSETS
Cash and cash equivalents	$	1,980		$	1,068		$	—		$	3,048
Receivables, net		60,310			18,694			—			79,004
Inventories		15,447			1,071			—			16,518
Rental fleet, net		868,049			151,614			—			1,019,663
Property, plant and equipment, net		100,180			16,555			—			116,735
Deposits and prepaid expenses		6,442			1,059			—			7,501
Deferred financing costs, net and other assets		8,173			—			—			8,173
Intangibles, net		76,259			706			—			76,965
Goodwill		636,863			66,474			—			703,337
Intercompany receivables		144,313			33,670			(177,983	)		—
Total assets	$	1,918,016		$	290,911		$	(177,983	)	$	2,030,944
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable	$	20,531		$	9,934		$	—		$	30,465
Accrued liabilities		57,658			6,932			—			64,590
Lines of credit		697,533			3,848			—			701,381
Obligations under capital leases		26,133			137			—			26,270
Senior Notes		200,000			—			—			200,000
Deferred income taxes		195,840			17,525			—			213,365
Intercompany payables		—			92			(92	)		—
Total liabilities		1,197,695			38,468			(92	)		1,236,071
Commitments and contingencies
Stockholders’ equity:
Common stock		491			18,388			(18,388	)		491
Additional paid-in capital		572,364			160,347			(160,347	)		572,364
Retained earnings		228,426			115,355			844			344,625
Accumulated other comprehensive loss		—			(41,647	)		—			(41,647	)
Treasury stock, at cost		(80,960	)		—			—			(80,960	)
Total stockholders’ equity		720,321			252,443			(177,891	)		794,873
Total liabilities and stockholders’ equity	$	1,918,016		$	290,911		$	(177,983	)	$	2,030,944

19

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

MOBILE MINI, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

As of December 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
ASSETS
Cash and cash equivalents	$	2,977		$	762		$	—		$	3,739
Receivables, net		62,033			18,998			—			81,031
Inventories		15,371			1,365			—			16,736
Rental fleet, net		934,433			152,623			—			1,087,056
Property, plant and equipment, net		95,509			17,666			—			113,175
Deposits and prepaid expenses		7,375			1,211			—			8,586
Deferred financing costs, net and other assets		8,858			—			—			8,858
Intangibles, net		77,629			756			—			78,385
Goodwill		635,943			69,665			—			705,608
Intercompany receivables		145,018			33,971			(178,989	)		—
Total assets	$	1,985,146		$	297,017		$	(178,989	)	$	2,103,174
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable	$	14,803		$	8,130		$	—		$	22,933
Accrued liabilities		56,104			7,623			—			63,727
Lines of credit		702,135			3,383			—			705,518
Obligations under capital leases		24,760			158			—			24,918
Senior Notes		200,000			—			—			200,000
Deferred income taxes		215,184			17,367			(1,004	)		231,547
Intercompany payables		—			94			(94	)		—
Total liabilities		1,212,986			36,755			(1,098	)		1,248,643
Commitments and contingencies
Stockholders’ equity:
Common stock		490			18,388			(18,388	)		490
Additional paid-in capital		569,083			160,347			(160,347	)		569,083
Retained earnings		268,263			111,397			844			380,504
Accumulated other comprehensive loss		—			(29,870	)		—			(29,870	)
Treasury stock, at cost		(65,676	)		—			—			(65,676	)
Total stockholders’ equity		772,160			260,262			(177,891	)		854,531
Total liabilities and stockholders’ equity	$	1,985,146		$	297,017		$	(178,989	)	$	2,103,174

20

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Rental	$	100,018		$	21,010		$	—		$	121,028
Sales		5,669			1,055			—			6,724
Other		4,787			90			—			4,877
Total revenues		110,474			22,155			—			132,629
Costs and expenses:
Rental, selling and general expenses		69,610			14,372			—			83,982
Cost of sales		3,401			796			—			4,197
Restructuring expenses		483			—			—			483
Asset impairment charge		64,726			—			—			64,726
Depreciation and amortization		13,848			1,691			—			15,539
Total costs and expenses		152,068			16,859			—			168,927
(Loss) income from operations		(41,594	)		5,296			—			(36,298	)
Other income (expense):
Interest income		2,662			—			(2,662	)		—
Interest expense		(11,343	)		(378	)		2,662			(9,059	)
(Loss) income before income tax provision		(50,275	)		4,918			—			(45,357	)
Income tax (benefit) provision		(18,991	)		960			—			(18,031	)
Net (loss) income	$	(31,284	)	$	3,958		$	—		$	(27,326	)

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE (LOSS) INCOME

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations		Consolidated
Net (loss) income	$	(31,284	)	$	3,958		$	—	$	(27,326	)
Foreign currency translation adjustment		—			(11,777	)		—		(11,777	)
Comprehensive loss	$	(31,284	)	$	(7,819	)	$	—	$	(39,103	)

21

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

Three Months Ended March 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Rental	$	74,268		$	19,812		$	—		$	94,080
Sales		6,527			1,339			—			7,866
Other		351			107			—			458
Total revenues		81,146			21,258			—			102,404
Costs and expenses:
Cost of sales		4,552			1,001			—			5,553
Rental, selling and general expenses		53,708			14,648			—			68,356
Restructuring expenses		397			188			—			585
Asset impairment charge, net		136			147			—			283
Depreciation and amortization		7,277			1,868			—			9,145
Total costs and expenses		66,070			17,852			—			83,922
Income from operations		15,076			3,406			—			18,482
Other income (expense):
Interest income		30			—			(30	)		—
Interest expense		(6,599	)		(418	)		30			(6,987	)
Foreign currency exchange		—			(1	)		—			(1	)
Income before income tax provision		8,507			2,987			—			11,494
Income tax provision		3,299			755			—			4,054
Net income	$	5,208		$	2,232		$	—		$	7,440

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

Three Months Ended March 31, 2014

(In thousands)

	Guarantors		Non- Guarantors		Eliminations		Consolidated
Net income	$	5,208	$	2,232	$	—	$	7,440
Foreign currency translation adjustment		—		1,180		—		1,180
Comprehensive income	$	5,208	$	3,412	$	—	$	8,620

22

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Net income	$	(31,284	)	$	3,958		$	—		$	(27,326	)
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge		64,726			—			—			64,726
Provision for doubtful accounts		947			222			—			1,169
Amortization of deferred financing costs		775			14			—			789
Amortization of long-term liabilities		25			—			—			25
Share-based compensation expense		3,160			90			—			3,250
Depreciation and amortization		13,848			1,691			—			15,539
Gain on sale of rental fleet units		(1,826	)		(146	)		—			(1,972	)
Loss on disposal of property, plant and equipment		219			116			—			335
Deferred income taxes		(19,192	)		959			—			(18,233	)
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables		188			(824	)		—			(636	)
Inventories		(75	)		232			—			157
Deposits and prepaid expenses		348			98			—			446
Other assets and intangibles		9			—			—			9
Accounts payable		751			282			—			1,033
Accrued liabilities		(467	)		(372	)		—			(839	)
Intercompany		683			(844	)		161			—
Net cash provided by operating activities		32,835			5,476			161			38,472
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired		—			(1,200	)		—			(1,200	)
Additions to rental fleet		(5,745	)		(4,735	)		—			(10,480	)
Proceeds from sale of rental fleet units		4,268			574			—			4,842
Additions to property, plant and equipment		(3,307	)		(934	)		—			(4,241	)
Proceeds from sale of property, plant and equipment		243			364			—			607
Net cash used in investing activities		(4,541	)		(5,931	)		—			(10,472	)
Cash Flows from Financing Activities:
Net borrowings (repayments) under lines of credit		(4,602	)		619			(154	)		(4,137	)
Deferred financing costs		(100	)		—			—			(100	)
Principal payments on capital lease obligations		(828	)		(14	)		(7	)		(849	)
Issuance of common stock		32			—			—			32
Dividend payments		(8,509	)		—			—			(8,509	)
Purchase of treasury stock		(15,284	)		—			—			(15,284	)
Net cash (used in) provided by financing activities		(29,291	)		605			(161	)		(28,847	)
Effect of exchange rate changes on cash		—			156			—			156
Net (decrease) increase in cash		(997	)		306			—			(691	)
Cash and cash equivalents at beginning of period		2,977			762			—			3,739
Cash and cash equivalents at end of period	$	1,980		$	1,068		$	—		$	3,048

23

MOBILE MINI, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) - Continued

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

Three Months Ended March 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations		Consolidated
Cash Flows from Operating Activities:
Net income	$	5,208		$	2,232		$	—	$	7,440
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge, net		136			147			—		283
Provision for doubtful accounts		453			94			—		547
Amortization of deferred financing costs		687			16			—		703
Amortization of long-term liabilities		40			1			—		41
Share-based compensation expense		3,963			201			—		4,164
Depreciation and amortization		7,277			1,868			—		9,145
Gain on sale of rental fleet units		(1,500	)		(211	)		—		(1,711	)
Loss on disposal of property, plant and equipment		48			24			—		72
Deferred income taxes		3,201			753			—		3,954
Foreign currency loss		—			1			—		1
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables		1,404			(626	)		—		778
Inventories		285			(57	)		—		228
Deposits and prepaid expenses		(1,416	)		140			—		(1,276	)
Other assets and intangibles		(178	)		173			—		(5	)
Accounts payable		1,123			1,938			—		3,061
Accrued liabilities		(350	)		(263	)		—		(613	)
Intercompany		756			(756	)		—		—
Net cash provided by operating activities		21,137			5,675			—		26,812
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired		(4,217	)		—			—		(4,217	)
Additions to rental fleet		(1,834	)		(2,244	)		—		(4,078	)
Proceeds from sale of rental fleet units		4,781			846			—		5,627
Additions to property, plant and equipment		(2,393	)		(235	)		—		(2,628	)
Proceeds from sale of property, plant and equipment		708			200			—		908
Net cash used in investing activities		(2,955	)		(1,433	)		—		(4,388	)
Cash Flows from Financing Activities:
Net repayments under lines of credit		(10,773	)		(5,534	)		—		(16,307	)
Principal payments on capital lease obligations		(367	)		—			—		(367	)
Issuance of common stock		1,949			—			—		1,949
Dividend payments		(7,849	)		—			—		(7,849	)
Purchase of treasury stock		(407	)		—			—		(407	)
Net cash used in financing activities		(17,447	)		(5,534	)		—		(22,981	)
Effect of exchange rate changes on cash		—			(132	)		—		(132	)
Net increase (decrease) in cash		735			(1,424	)		—		(689	)
Cash and cash equivalents at beginning of period		(190	)		1,446			—		1,256
Cash and cash equivalents at end of period	$	545		$	22		$	—	$	567

24

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

The following discussion of our financial condition and results of operations should be read together with our December 31, 2014 consolidated financial statements and the accompanying notes thereto which are included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”). This discussion contains forward-looking statements. Forward-looking statements are based on current expectations and assumptions that involve risks and uncertainties. Our actual results may differ materially from those anticipated in our forward-looking statements. The tables and information in this “Management’s Discussion and Analysis of Financial Conditions and Results of Operations” section were derived from exact numbers and may have immaterial rounding differences.

Overview

Executive Summary

We are the world’s leading provider of portable storage solutions, maintaining a strong leadership position in virtually all markets served. Our mission is to be the leader in portable storage solutions to customers throughout North America and the U.K. and specialty containment solutions in the U.S. We are committed to providing our customers with superior service and access to a high-quality and diverse fleet. In managing our business, we focus on renting rather than selling our units, with rental revenues representing approximately 91.3% of our total revenues for the three months ended March 31, 2015. We believe this strategy is highly attractive and provides predictable, recurring revenue. Additionally, our assets have long useful lives, and low maintenance costs. We also sell new and used units, and provide delivery, installation and other ancillary products and value-added services.

On December 10, 2014 we completed the acquisition of Evergreen Tank Solutions, the ETS Acquisition. ETS is the third largest provider of specialty containment solutions in the U.S. and the leading provider in the Gulf Coast region. ETS will continue to operate as a separate subsidiary of ours under the ETS name (as will its own subsidiary, Water Movers), and its operations are included in our results of operations for the three months ended March 31, 2015.

Our business strategy is to invest in high return, low maintenance, long-lived assets. Wood mobile offices require more maintenance and upkeep than Mobile Mini’s stainless steel ground level offices and containers, resulting in lower margins as compared to other portable storage products, as well as the newly-acquired specialty containment products. During March 2015, we entered into discussions regarding the possible sale of our wood mobile offices within our North American Portable Storage segment. The discussions indicated that the fleet might be sold at an amount below carrying value. We conducted a review for impairment for these long-lived assets as of March 31, 2015. Based on this review, management determined that the assets were impaired as of March 31, 2015 and an impairment loss of $64.7 million was recorded in the current quarter. See additional discussion regarding the impairment and the divestiture of the wood mobile offices in Note 5 and Note 18 to the accompanying condensed consolidated financial statements.

As of March 31, 2015, we operate our portable storage business from 134 locations throughout North America and in the U.K., and have a portable storage fleet of approximately 213,800 units. Our recently acquired specialty containment business serves customers through 24 locations with a fleet of approximately 10,800 units.

Accounting and Operating Overview

Our principal operating revenues and expenses are:

Revenues:

• Rental revenues include all rent and ancillary revenues we receive for our rental fleet.

• Sales revenues consists primarily of sales of new and used portable storage products.

Costs and expenses:

• Rental, selling and general expenses contain, among other expenses, payroll and payroll-related costs including share-based compensation and commissions for our sales team, fleet transportation and fuel costs, repair and maintenance costs for our rental fleet and transportation equipment, real estate lease expense, insurance costs, and general corporate expenses.

• Cost of sales is the net book value of the units that were sold during the reported period and includes both our cost to buy, transport, remanufacture and modify used containers and our cost to manufacture portable storage units and other structures.

• Depreciation and amortization includes depreciation on our rental fleet, our property, plant and equipment, and amortization of definite-lived intangible assets

Our principal asset is our rental fleet, which is capitalized at cost and depreciated over the estimated useful life of the unit using the straight-line method. Rental fleet is depreciated whether or not it is out on rent. Capitalized cost of rental fleet includes the price paid to acquire the unit and freight charges to the location when the unit is first placed in service, and when applicable, the cost of manufacturing or remanufacturing, which includes the cost of customizing units. Ordinary repair and maintenance costs are charged to operations as incurred.

25

The table below outlines the composition of our portable storage rental fleet at March 31, 2015:

	Rental Fleet			Number of Units		Percentage of Units
	(In thousands)
Steel storage containers	$	602,360			173,700		81	%
Ground level offices		330,891			28,555		14
Wood mobile offices		143,894			9,451		4
Other		5,230			2,060		1
Portable storage rental fleet		1,082,375			213,766		100	%
Accumulated depreciation		(186,209	)
Portable storage rental fleet, net	$	896,166

The tables below outline the composition of our specialty containment rental fleet at March 31 2015:

	Rental Fleet			Number of Units		Percentage of Units
	(In thousands)
Steel tanks	$	52,031			2,854		26	%
Roll-off boxes		23,247			4,819		45
Vacuum boxes		8,189			1,005		9
Stainless steel tank trailers		23,287			577		5
Dewatering boxes		4,271			591		6
Pumps and filtration equipment		11,655			964		9
Other		5,954			n/a
Specialty containment rental fleet		128,634			10,810		100	%
Accumulated depreciation		(5,137	)
Specialty containment rental fleet, net	$	123,497

We are a capital-intensive business. Therefore in addition to focusing on measurements calculated in accordance with generally accepted accounting principles in the U.S. (“GAAP”), we focus on EBITDA, Adjusted EBITDA, and free cash flow to measure our operating results. EBITDA, Adjusted EBITDA and the resultant margins, as well as free cash flow are non-GAAP financial measures. As such, we include in this Quarterly Report on Form 10-Q reconciliations to their most directly comparable GAAP financial measures. These reconciliations and a description of the limitations of these measures are included below in this report.

Non-GAAP Data and Reconciliations

EBITDA and Adjusted EBITDA. EBITDA eliminates the effect of financing transactions that we enter into and is defined as net income before discontinued operation, net of tax (if applicable), interest expense, income taxes, depreciation and amortization, and debt restructuring or extinguishment expense (if applicable), including any write-off of deferred financing costs. Adjusted EBITDA further excludes certain non-cash expenses, such as share-based compensation, as well as transactions that management believes are not indicative of our ongoing business. Because EBITDA and Adjusted EBITDA, as defined, exclude some but not all items that affect our cash flow from operating activities, they may not be comparable to similarly titled performance measures presented by other companies.

We present EBITDA and Adjusted EBITDA because we believe they provide useful information regarding our ability to meet our future debt payment requirements, capital expenditures and working capital requirements and that they provide an overall evaluation of our financial condition. EBITDA and Adjusted EBITDA have certain limitations as analytical tools and should not be used as substitutes for net income, cash flows from operations, or other consolidated income or cash flow data prepared in accordance with GAAP.

26

Reconciliation of EBITDA to net cash provided by operating activities, the most directly comparable GAAP measure, is as follows:

	Three Months Ended March 31,
	2015			2014
	(In thousands)
EBITDA	$	(20,759	)	$	27,626
Interest paid		(4,190	)		(2,160	)
Income and franchise taxes paid		(273	)		(89	)
Share-based compensation expense		3,250			4,164
Asset impairment charge, net		64,726			283
Gain on sale of rental fleet units		(1,972	)		(1,711	)
Loss on disposal of property, plant and equipment		335			72
Change in certain assets and liabilities, net of effect of businesses acquired:
Receivables		533			1,325
Inventories		157			228
Deposits and prepaid expenses		446			(1,276	)
Other assets and intangibles		9			(5	)
Accounts payable and accrued liabilities		(3,790	)		(1,645	)
Net cash provided by operating activities	$	38,472		$	26,812

Reconciliation of net income to EBITDA and Adjusted EBITDA is as follows:

	Three Months Ended March 31,
	2015			2014
	(In thousands)
Net income	$	(27,326	)	$	7,440
Interest expense		9,059			6,987
Income tax (benefit) provision		(18,031	)		4,054
Depreciation and amortization		15,539			9,145
EBITDA		(20,759	)		27,626
Share-based compensation expense (1)		3,250			4,164
Restructuring expenses (2)		483			585
Acquisition expenses (3)		1,002			6
Asset impairment charge, net (4)		64,726			283
Sales tax refund included in other revenue (5)		(1,176	)		—
Adjusted EBITDA	$	47,526		$	32,664
EBITDA margin		(15.7	)%		27.0	%
Adjusted EBITDA margin (5)		36.2			31.9

(1) Share-based compensation represents non-cash compensation expense associated with the granting of equity instruments.

(2) Restructuring costs include the following actions to align our business operations, some of which were begun in previous periods: the termination of the consumer initiative program in the third quarter of 2012, the sale of our Belfast, North Ireland location in the second quarter of 2014, the realignment of the Company’s corporate organization, field management and sales force structures in North America throughout 2014, and additional field restructuring in 2015 to facilitate the integration of ETS.

(3) Acquisition expenses represent activity costs as described.

(4) In 2015, asset impairment costs represent the impairment of wood mobile offices in connection with the divestiture of these assets. In 2014, the asset impairment costs represent the additional loss upon completion of sale (offset by gains upon completion of sale) of assets that were written down to fair value in the second quarter of 2013.

(5) Revenue associated with a sales tax refund recorded in the current quarter that is not indicative of our ongoing business. This revenue was also excluded in the calculation of the adjusted EBITDA margin.

27

Free Cash Flow. Free cash flow is defined as net cash provided by operating activities, minus or plus, net cash used in or provided by investing activities, excluding acquisitions and certain transactions. Free cash flow is a non-GAAP financial measure and is not intended to replace net cash provided by operating activities, the most directly comparable financial measure prepared in accordance with GAAP. We present free cash flow because we believe it provides useful information regarding our liquidity and ability to meet our short-term obligations. In particular, free cash flow indicates the amount of cash available after capital expenditures for, among other things, investments in our existing business, debt service obligations, payment of authorized quarterly dividends, repurchase of our common stock and strategic small acquisitions.

Reconciliation of net cash provided by operating activities to free cash flow is as follows:

	Three Months Ended March 31,
	2015			2014
	(In thousands)
Net cash provided by operating activities	$	38,472		$	26,812
Additions to rental fleet		(10,480	)		(4,078	)
Proceeds from sale of rental fleet units		4,842			5,627
Additions to property, plant and equipment		(4,241	)		(2,628	)
Proceeds from sale of property, plant and equipment		607			908
Net capital proceeds (expenditures)		(9,272	)		(171	)
Free cash flow	$	29,200		$	26,641

28

RESULTS OF OPERATIONS

Three Months Ended March 31, 2015, Compared to Three Months Ended March 31, 2014

	Three Months Ended March 31,						Percent of Revenue Three Months Ended March 31,						Increase (Decrease) 2015 versus 2014
	2015			2014			2015			2014
	(In thousands, except percentages)
Revenues:
Rental	$	121,028		$	94,080			91.3	%		91.9	%	$	26,948		28.6	%
Sales		6,724			7,866			5.1			7.7			(1,142	)	(14.5	)
Other		4,877			458			3.7			0.4			4,419		964.8
Total revenues		132,629			102,404			100.0			100.0			30,225		29.5
Costs and expenses:
Rental, selling and general expenses		83,982			68,356			63.3			66.8			15,626		22.9
Cost of sales		4,197			5,553			3.2			5.4			(1,356	)	(24.4	)
Restructuring expenses		483			585			0.4			0.6			(102	)	(17.4	)
Asset impairment charge, net		64,726			283			48.8			0.3			64,443		n/a
Depreciation and amortization		15,539			9,145			11.7			8.9			6,394		69.9
Total costs and expenses		168,927			83,922			127.4			82.0			85,005		101.3
(Loss) income from operations		(36,298	)		18,482			(27.4	)		18.0			(54,780	)	(296.4	)
Other income (expense):
Interest expense		(9,059	)		(6,987	)		(6.8	)		(6.8	)		(2,072	)	29.7
Foreign currency exchange		—			(1	)		—			—			1
(Loss) income before income tax (benefit) provision		(45,357	)		11,494			(34.1	)		11.2			(56,851	)
Income tax (benefit) provision		(18,031	)		4,054			(13.6	)		4.0			(22,085	)
Net (loss) income	$	(27,326	)	$	7,440			(20.5	)%		7.3	%	$	(34,766	)
	Three Months Ended March 31,						Percent of Revenue Three Months Ended March 31,						Increase (Decrease) 2015 versus 2014
	2015			2014			2015			2014
	(In thousands, except percentages)
EBITDA	$	(20,759	)	$	27,626			(15.7	)%		27.0	%	$	(48,385	)	(175.1	)%
Adjusted EBITDA (1)		47,526			32,664			36.2			31.9			14,862		45.5
Free Cash Flow		29,200			26,641			22.0			26.0			2,559		9.6

(1) The calculation of adjusted EBITDA as a percent of revenue for the three months ended March 31, 2015, includes a reduction to revenues of $1.2 million related to a sales tax refund, which is not indicative of our ongoing business. See “Non-GAAP Data and Reconciliations” earlier in this document.

Revenues. The following table depicts revenue by type of business for the three month periods ended March 31:

	Portable Storage									Specialty Containment
	2015		2014		Increase (Decrease) 2015 versus 2014					2015
	(In thousands, except percentages)
Revenues:
Rental	$	99,004	$	94,080	$	4,924		5.2	%	$	22,024
Sales		5,962		7,866		(1,904	)	(24.2	)		762
Other		1,529		458		1,071		233.8			3,348
Total revenues	$	106,495	$	102,404	$	4,091		4.0		$	26,134

Total revenues for the quarter ended March 31, 2015 increased $30.2 million, or 29.5%, to $132.6 million, compared to $102.4 million for the same period in 2014. Of this increase, $26.1 million is due to the acquired specialty containment business and $4.1 million is due to portable storage. Rental revenues as a percentage of total revenues was 91.3%, compared to 91.9% in the prior-year quarter. Rental revenues for the quarter ended March 31, 2015 increased $26.9 million, or 28.6%, to $121.0 million, compared to $94.1 million for the same period in 2014. Specialty containment rental revenue accounted for $22.0 million of this increase, while portable storage rental revenue increased to $99.0 million, from $94.1 million in the prior-year quarter.

29

Within the portable storage business, the $4.9 million, or 5.2% increase in rental revenues, was driven by increased rates and higher trucking and ancillary revenues. As a result of the 6.2% increase in rate, yield (rental revenues divided by average units on rent) increased 4.9% as compared to the prior-year quarter.

Revenue from the sales of portable storage and office units for the quarter ended March 31, 2015 decreased $1.9 million, or 24.2%, to $6.0 million, compared to $7.9 million in the same period in 2014. Revenue from specialty containment sales was $0.8 million for the quarter ended March 31, 2015. We focus on rental revenues; as such, in general, sales of units from our fleet occur due to a particular customer need, or due to having fleet in excess of demand at a particular location.

Costs and expenses. The following table depicts costs and expenses by type of business for the three month periods ended March 31:

	Portable Storage Three Months Ended March 31,									Specialty Containment
	2015		2014		Increase (Decrease) 2015 versus 2014					2015
	(In thousands, except percentages)
Costs and Expenses
Rental, selling and general expenses	$	67,232	$	68,356	$	(1,124	)	(1.6	)%	$	16,750
Cost of sales		3,864		5,553		(1,689	)	(30.4	)		333
Restructuring expenses		217		585		(368	)	(62.9	)		266
Asset impairment charge, net		64,726		283		64,443		n/a			—
Depreciation and amortization		9,466		9,145		321		3.5			6,073
Total costs and expenses	$	145,505	$	83,922	$	61,583		73.4		$	23,422

Within the portable storage business, rental, selling and general expenses decreased $1.1 million, or 1.6%; and as a percentage of total portable storage revenues decreased to 63.1% from 66.8% in the three months ended March 2015 and 2014, respectively. Excluding the $1.2 million sales tax refund from revenues, and $1.0 of acquisition-related expenses, selling and general expenses were 62.9% of total portable storage revenues.

Within the portable storage business, payroll-related expenses decreased $1.1 million, primarily due to lower share-based compensation expense. Fleet freight and fuel, and fleet repairs and maintenance, decreased $1.9 million and $1.8 million, respectively, due to the renewed focus in the prior-year on bringing our fleet to rent-ready condition, and positioning the fleet in areas where the utilization is the highest. Maintaining and positioning our fleet remains a focus in the current quarter, however the expense is beginning to approach more normal levels. Repairs and maintenance on our portable storage rental fleet as a percentage of rental revenue was 4.7%, compared to 6.9% in the prior-year quarter.

Also within the portable storage business, rental, selling and general expenses increases include acquisition-related expenses of $1.0 million, as well as an increase in professional fees, and service contracts, including telephone, of $2.0 million due to upgraded technology, network and telephone systems, increased marketing research, and non-capitalizable expenses associated with our enterprise resource planning (“ERP”) implementation. Specialty containment rental, selling and general expense was $16.8 million for the quarter, or 64.0% of total revenues.

Cost of sales is the cost related to our sales revenue only. Within the portable storage business, cost of sales was $3.9 million and $5.6 million in the quarters ended March 31, 2015 and 2014, respectively. Portable storage sales revenue, less cost of sales (sales profit), was $2.1 million and $2.3 million for the three month periods ended March 31, 2015 and 2014, respectively. Sales profit expressed as a percentage of sales revenue (sales profit margin), was 35.2% in the current quarter and 29.4% in the prior-year quarter. Cost of sales related to our specialty containment products was $0.3 million in the current quarter. Specialty product sales profit and profit margin were $0.4 million and 56.3% in the current quarter.

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Restructuring costs in the three month periods ended March 31, 2015 and 2014, include the following actions to align our business operations, some of which were begun in previous periods: the termination of the consumer initiative program in the third quarter of 2012, the sale of our Belfast, North Ireland location in the second quarter of 2014, the realignment of the Company’s corporate organization, field management and sales force structures in North America throughout 2014, and additional field restructuring in 2015 to facilitate the integration of ETS.

As discussed above, impairment charges of $64.7 million for the three months ended March 31, 2015 relate to our wood mobile offices in our North American portable storage segment. We concluded the assets were impaired after a review, which resulted from discussions with a potential buyer regarding the sale of these assets. The discussions indicated the fleet might be sold at an amount below carrying value. See additional discussion regarding the impairment and pending sale of the wood mobile office assets in Note 5 and Note 18. Asset impairment charges, net of recoveries, were $0.3 million for the three months ended March 31, 2014 and relate to a 2013 assessment of the rental fleet resulting in a non-cash impairment charge on long-lived assets. As these assets have been sold or otherwise disposed of, additional adjustments have been made to the impairment charge resulting in total asset impairment charges, net of recoveries.

Depreciation and amortization expense increased $6.4 million for the three months ended March 31, 2015, as compared to the prior-year quarter, of which $6.1 million relates to the specialty containment business.

Adjusted EBITDA. Adjusted EBITDA increased $14.9 million, or 45.5%, to $47.5 million, compared to $32.7 million in the prior-year period. Of this increase, $5.5 million related to our portable storage business and $9.3 million related to our specialty containment business. Adjusted EBITDA margins were 36.2% and 31.9% for the quarters ended March 31, 2015 and 2014, respectively. Adjusted EBITDA margins for the current-year quarter were 36.3% for our portable storage business, and 35.7% for specialty containment.

Interest Expense. Interest expense increased $2.1 million, or 29.7%, to $9.1 million in 2015. In December 2014 we borrowed funds under our Credit Agreement to facilitate the ETS Acquisition. Our average debt outstanding in the current-year quarter was $930.6 million as compared to $515.7 million in the prior-year quarter. The weighted average interest rate on our debt was 3.5% and 4.8% for the three months ended March 31, 2015 and 2014, respectively, excluding the amortizations of debt issuance and other costs. Taking into account the amortization of debt issuance costs, the weighted average interest rate was 3.9% and 5.4% for the three month periods ended March 31, 2015 and 2014, respectively. The decrease in the average interest rate is primarily due to the increase of our lower rate variable debt, the line of credit, as a percentage of our overall debt.

(Benefit) Provision for income taxes. During the current quarter, we had an $18.0 million benefit for income taxes, due to a pre-tax loss of $45.4 million, driven by the asset impairment charge discussed previously. In the prior-year quarter we had a $4.1 million provision for tax on pre-tax income of $11.5 million. Our effective income tax rate increased to 39.8% for three months ended March 31, 2015, compared to 35.3% for the prior-year period. The rate increase is primarily due to the magnitude of the loss in North America, which has a higher income tax rate.

Net (loss) income. Primarily due to the $64.7 million impairment loss and the other income statement activity discussed above, we had a net loss of $27.3 million for the three months ended March 31, 2015, compared to net income of $7.4 million in the prior-year quarter.

LIQUIDITY AND CAPITAL RESOURCES

Ours is a capital-intensive business that requires us to acquire assets before they generate revenues, cash flow and earnings. The assets that we rent to customers have very long useful lives and require relatively little maintenance expenditures. Most of the capital we have deployed in our rental business historically has been used to expand our operations geographically, to increase the number of units available for rent at our existing locations, and to add to the mix of products we offer. During recent years, our operations have generated annual cash flow that exceeds our pre-tax earnings, particularly due to cash flow from operations and the deferral of income taxes caused by accelerated depreciation of our fixed assets in our tax return filings. Our free cash flow has been positive, even after capital net expenditures, for the past five years. This positive cash flow trend continued for the three-month period ended March 31, 2015. In addition to cash flow generated by operations, our principal current source of liquidity is our Credit Agreement described below.

Revolving Credit Facility. On February 22, 2012, we entered into a $900.0 million Credit Agreement with Deutsche Bank AG New York Branch and other lenders party thereto. On December 10, 2014, we amended our Credit Agreement to increase the credit facility to $1.0 billion. The Credit Agreement provides for a five-year, revolving credit facility and matures on February 22, 2017. The obligations of us and our subsidiary guarantors under the Credit Agreement are secured by a blanket lien on substantially all of our assets. We funded the December 10, 2014 ETS Acquisition with funds drawn on our Credit Agreement. At March 31, 2015, we had $701 million of borrowings outstanding and $291 million of additional borrowing availability under the Credit Agreement. We were in compliance with the terms of the Credit Agreement as of March 31, 2015 and were above the minimum borrowing availability threshold and therefore not subject to any financial maintenance covenants.

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Amounts borrowed under the Credit Agreement and repaid or prepaid during the term may be reborrowed. Outstanding amounts under the Credit Agreement bear interest at our option at either: (i) LIBOR plus a defined margin, or (ii) the Agent bank’s prime rate plus a margin. The applicable margin for each type of loan is based on an availability-based pricing grid and ranges from 1.75% to 2.25% for LIBOR loans and 0.75% to 1.25% for base rate loans at each measurement date. Based on the pricing grid at March 31, 2015, the applicable margins are 2.00% for LIBOR loans and 1.00% for base rate loans and will be remeasured at the end of the next measurement date, which is within 10 days following the end of each fiscal quarter.

Availability of borrowings under the Credit Agreement is subject to a borrowing base calculation based upon a valuation of our eligible accounts receivable, eligible container fleet (including containers held for sale, work-in-process and raw materials) and machinery and equipment, each multiplied by an applicable advance rate or limit. The rental fleet is appraised at least once annually by a third-party appraisal firm and up to 90% of the net orderly liquidation value, as defined in the Credit Agreement, is included in the borrowing base to determine how much we may borrow under the Credit Agreement. We do not expect the impairment, or the divestiture, of the wood mobile offices to have a material effect on our available borrowings, as the calculated borrowing base currently exceeds the maximum eligibility.

The Credit Agreement provides for U.K. borrowings, which are, at our option, denominated in either Pounds Sterling or Euros, by our U.K. subsidiary based upon a U.K. borrowing base; Canadian borrowings, which are denominated in Canadian dollars, by our Canadian subsidiary based upon a Canadian borrowing base; and U.S. borrowings, which are denominated in U.S. dollars, based upon a U.S. borrowing base along with any Canadian assets not included in the Canadian subsidiary.

The Credit Agreement also contains customary negative covenants, including covenants that restrict our ability to, among other things: (i) allow certain liens to attach to the Company or its subsidiary assets; (ii) repurchase or pay dividends or make certain other restricted payments on capital stock and certain other securities, prepay certain indebtedness or make acquisitions or other investments subject to Payment Conditions (as defined in the Credit Agreement); and (iii) incur additional indebtedness or engage in certain other types of financing transactions. Payment Conditions allow restricted payments and acquisitions to occur without financial covenants as long as we have $250.0 million of pro forma excess borrowing availability under the Credit Agreement. We must also comply with specified financial maintenance covenants and affirmative covenants only if we fall below $100.0 million of borrowing availability levels.

We believe our cash provided by operating activities will provide for our normal capital needs for the next twelve months. If not, we have sufficient borrowings available under our Credit Agreement to meet any additional funding requirements. We monitor the financial strength of our lenders on an ongoing basis using publicly-available information. Based upon that information, we do not presently believe that there is a likelihood that any of our lenders will be unable to honor their respective commitments under the Credit Agreement. Free cash flow was $29.2 million and $26.6 million for the three month periods ended March 31, 2015 and March 31, 2014, respectively.

Senior Notes. At March 31, 2015, we had outstanding $200.0 million aggregate principal amount of 7.875% senior notes due 2020 (the “2020 Notes” or the “Senior Notes”). Interest on the 2020 Notes is payable semiannually in arrears on June 1 and December 1 of each year.

Operating Activities. Net cash provided by operating activities was $38.5 million in the three months ended March 31, 2015, compared to $26.8 million in the same period in the prior year, an increase of $11.7 million. Although the current period reflects a net loss of $27.3 million, compared to net income of $7.4 million in the comparable quarter in the prior-year period, the difference is due primarily to non-cash items. Non-cash items in the current year include, a $64.7 million asset impairment charge, $18.2 million of deferred tax benefit, $15.5 million in depreciation and amortization and $3.3 million of share-based compensation expense. Non-cash items in the prior year include $4.0 million in deferred tax expense, $9.1 million of depreciation and amortization, $4.2 million of share-based compensation.

Excluding the net non-cash income statement items of $65.6 million in the current-year quarter and $17.2 million in the prior-year quarter, cash generated by net income increased to $38.3 million, from $24.6 million in the prior year quarter. The increase is due primarily to the recently acquired business associated with the specialty containment business, as well as increased margins in the portable storage business. The change in working capital accounts was $0.2 million in the 2015 quarter and $2.2 million in the 2014 quarter, due to normal operating fluctuations.

Investing Activities. Net cash used in investing activities was $10.5 million for the three months ended March 31, 2015, compared to $4.4 million for the same period in 2014. Cash paid for businesses acquired was $1.2 million in the current-year period and $4.2 million in the prior-year period. Capital expenditures for our rental fleet were $10.5 million, and proceeds from sale of rental fleet units were $4.8 million for the three months ended March 31, 2015, compared to capital expenditures of $4.1 million and proceeds of $5.6 million for the same period in 2014. Of the $10.5 million in capital expenditures for the rental fleet, $4.7 million are related to our U.K. business and $3.1 million were specialty containment fleet expenditures.

Financing Activities. Net cash used in financing activities during the three months ended March 31, 2015 was $28.8 million, compared to $23.0 million for the same period in 2014. We used our free cash flow to paydown $4.1 million on our lines of credit, to purchase $15.3 million of treasury shares and pay $8.5 million in dividends. In the prior year, payments of $16.3 million on our line of credit and $7.8 million in dividends, were partially offset by $1.9 million received in conjunction with the exercise of stock options.

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CONTRACTUAL OBLIGATIONS AND COMMITMENTS

Our contractual obligations primarily consist of our outstanding balance under the Credit Agreement, $200.0 million aggregate principal amount of the Senior Notes and obligations under capital leases. We also have operating lease commitments for: (i) real estate properties for the majority of our locations with remaining lease terms typically ranging from one to five years, (ii) delivery, transportation and yard equipment, typically under a five-year lease with purchase options at the end of the lease term at a stated or fair market value price, and (iii) office related equipment.

At March 31, 2015, primarily in connection with securing our insurance policies, we have provided certain insurance carriers and others with approximately $7.5 million in letters of credit. We currently do not have any obligations under purchase agreements or commitments.

OFF-BALANCE SHEET TRANSACTIONS

We do not maintain any off-balance sheet transactions, arrangements, obligations or other relationships with unconsolidated entities or others that are reasonably likely to have a material current or future effect on our financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources.

SEASONALITY

Demand from our portable storage customers is somewhat seasonal. Construction customers typically reflect higher demand during months with more temperate weather, while demand for our portable storage units by large retailers is stronger from September through December because these retailers need to store more inventories for the holiday season. Our retail customers usually return these rented units to us in December and early in the following year. In the specialty containment business, demand from customers is typically higher in the middle of the year from March to October, driven by the timing of customer maintenance projects. The demand for rental of our pumps, may also impacted by weather, specifically when temperatures drop below freezing.

CRITICAL ACCOUNTING POLICIES, ESTIMATES AND JUDGMENTS

A comprehensive discussion of our critical accounting policies and management estimates and significant accounting policies are included in the Management’s Discussion and Analysis of Financial Conditions and Results of Operations and in Note 2 in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014.

There have been no significant changes in our critical accounting policies, estimates and judgments during the three-month period ended March 31, 2015.

RECENT ACCOUNTING PRONOUNCEMENTS

For discussions of the adoption and potential impacts of recently issued accounting standards, refer to Note 2, “Recent Accounting Pronouncements.”

CAUTIONARY STATEMENTS REGARDING FORWARD-LOOKING STATEMENTS

This section and other sections of this report contain forward-looking information about our financial results and estimates and our business prospects that involve substantial risks and uncertainties. From time to time, we also may provide oral or written forward-looking statements in other materials we release to the public. Forward-looking statements are expressions of our current expectations or forecasts of future events. You can identify these statements by the fact that they do not relate strictly to historic or current facts. They include words such as “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe,” “will,” and other words and terms of similar meaning in connection with any discussion of future operating or financial performance. In particular, these include statements relating to future actions, future performance or results, expenses, the outcome of contingencies, such as legal proceedings, and financial results. Factors that could cause actual results to differ materially from projected results include, without limitation:

• our ability to increase revenue and control operating costs;

• our ability to raise or maintain rental rates;

• an economic slowdown in the U.S. and/or the U.K. that affects any significant portion of our customer base, or the geographic regions where we operate in those countries;

• our ability to leverage and protect our information technology systems;

• changes in the supply and cost of the raw materials we use in refurbishing or remanufacturing storage units;

• competitive developments affecting our industry, including pricing pressures;

• the timing, effectiveness and number of new markets we enter;

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• our ability to cross-sell our portable storage and specialty containment products,

• our ability to integrate ETS, or other acquisitions and achieve the expected benefits therefrom;

• our ability to execute the divestiture of the wood mobile offices and achieve the expected benefits from the divestiture;

• our ability to obtain borrowings under our Credit Agreement or additional debt or equity financing on acceptable terms;

• our ability to develop a new scalable enterprise resource platform; and

• our ability to utilize our tax assets.

We cannot guarantee that any forward-looking statement will be realized, although we believe we have been prudent in our plans and assumptions. Achievement of future results is subject to risks, uncertainties and inaccurate assumptions. Should known or unknown risks or uncertainties materialize, or should underlying assumptions prove inaccurate, actual results could vary materially from past results and those anticipated, estimated or projected. We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

In addition to the information set forth in this report, you should carefully consider the factors discussed in our Annual Report on Form 10-K for the year ended December  31, 2014, under the heading “Risk Factors”.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk. As of March 31, 2015, we had $701.4 million of indebtedness under our Credit Agreement, which bears interest at variable rates. The average interest rate applicable to our Credit Agreement was 2.17% for the three months ended March 31, 2015. Based upon the average amount of our variable rate debt outstanding during the three months ended March 31, 2015, our annual interest expense would increase by approximately $7.0 million for each one percentage point increase in the interest rate of our lines of credit.

Impact of Foreign Currency Rate Changes. We currently have operations outside the U.S. and we bill those customers primarily in their local currency, which is subject to foreign currency rate changes. Our operations in Canada are billed in the Canadian Dollar, operations in the U.K. are billed in Pound Sterling. We are exposed to foreign exchange rate fluctuations as the financial results of our non-U.S. operations are translated into U.S. Dollars. The impact of foreign currency rate changes has historically been insignificant with our Canadian operations, but we have more exposure to volatility with our U.K. operations. In order to help minimize our exchange rate gain and loss volatility, we finance our European entities through our Credit Agreement, which allows us, at our option, to borrow funds locally in Pound Sterling or Euros denominated debt.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures.

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended). Based on that evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that, as of the end of the period covered by this quarterly report on Form 10-Q, the Company’s disclosure controls and procedures were effective such that the information relating to the Company required to be disclosed in our SEC reports (i) is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and (ii) is accumulated and communicated to the Company’s management, including our Chief Executive Officer and our Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Controls.

There were no changes in our internal control over financial reporting that have occurred during the fiscal quarter covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1A. RISK FACTORS

We refer you to documents filed by us with the SEC, specifically “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014, which identify important risk factors that could materially affect our business, financial condition and future results. We also refer you to the factors and cautionary language set forth in the section entitled “Cautionary Statements Regarding Forward-looking Statements” in “Item 2. Management’s Discussion and Analysis of Financial Conditions and Results of Operations” of this quarterly report on Form 10-Q. This Quarterly Report on Form 10-Q, including the accompanying condensed consolidated financial statements and related notes, should be read in conjunction with such risks and other factors for a full understanding of our operations and financial condition. The risks described in our Form 10-K and herein are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition or operating results. The risk factors included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014 have not materially changed.

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

The table below summarizes the information about purchases of our common stock during the quarterly period ended March 31, 2015:

Period	Total Number of Shares Purchased (1)		Average Price Paid per Share (2)		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (3)		Approximate Dollar Value of Shares That May Yet be Purchased Under the Plans or Programs (3)
January 2015		386,867	$	38.77		386,867	$	85,013
February 2015		6,231		41.38		—		85,013
March 2015		438		42.04		—		85,013
Total		393,536				386,867

(1) Shares not purchased as part of a publicly announced plan or program represent shares withheld from employees to satisfy minimum tax withholding obligations upon the vesting of restricted stock.

(2) The weighted average price paid per share of common stock does not include the cost of commissions.

(3) In November 2013, the Company’s Board approved a share repurchase program authorizing up to $125.0 million of the Company’s outstanding shares of common stock to be repurchased. The shares may be repurchased from time to time in the open market or in privately negotiated transactions. The share repurchase program does not have an expiration date and may be suspended or terminated at any time by the Board.

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ITEM 6. EXHIBITS [TBU]

Number	Description
23.2*	Consent of Independent Valuation Firm
31.1*	Certification of Chief Executive Officer pursuant to Item 601(b)(31) of Regulation S-K
31.2*	Certification of Chief Financial Officer pursuant to Item 601(b)(31) of Regulation S-K
32.1**	Certification of Chief Executive Officer and Chief Financial Officer pursuant to item 601(b)(32) of Regulation S-K
101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema Document
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*	XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase Document

* Filed herewith.

** Furnished herewith.

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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.

	MOBILE MINI, INC.
Date: April 30, 2015	/s/ Mark E. Funk
	Mark E. Funk
	Chief Financial Officer

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EX-23.2

Exhibit 23.2

CONSENT OF INDEPENDENT VALUATION FIRM

We consent to the inclusion in Mobile Mini, Inc.’s Quarterly Report on Form 10-Q for the period ended March 31, 2015 of references to our Valuation Reports relating to the estimation of either or both the fair market value and the orderly liquidation value of the company’s portable storage rental fleet appraised as of September 30, 2014, and the Valuation Reports relating to the estimation of either or both the fair market value and the orderly liquidation value of the company’s specialty containment rental fleet appraised as of December 10, 2014, and to references to our firm’s name therein.

AccuVal Associates, Incorporated

/s/ William R. Corwin

William R. Corwin, CEA

Senior Manager

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Erik Olsson, certify that:

1. I have reviewed this report on Form 10-Q of Mobile Mini, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of 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 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; and

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

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

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

Date: April 30, 2015	/s/ Erik Olsson
	Erik Olsson
	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Mark E. Funk, certify that:

1. I have reviewed this report on Form 10-Q of Mobile Mini, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of 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 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; and

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

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

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

Date: April 30, 2015	/s/ Mark E. Funk
	Mark E. Funk
	Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Mobile Mini, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2015, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Erik Olsson, Chief Executive Officer of the Company, and Mark E. Funk, Chief Financial Officer of the Company, each certify, to the best of his knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

Date: April 30, 2015	/s/ Erik Olsson
	Erik Olsson
	Chief Executive Officer
Date: April 30, 2015	/s/ Mark E. Funk
	Mark E. Funk
	Chief Financial Officer

This certification accompanies this Report on Form 10-Q pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by such Act, be deemed filed by Mobile Mini, Inc. for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that Mobile Mini, Inc. specifically incorporates it by reference.

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

XML

Mobile Mini, Organization and Description of Business - Additional Information (Detail)	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Percentage of ownership owned	100.00%

XML

Property, Plant and Equipment - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 4.9	$ 3.5

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Acquisition - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015 Entity
Business Combinations [Abstract]
Number of business acquired	1

XML

Segment Reporting - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Segment	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Number of reportable segments	2
Revenues	$ 132,629	$ 102,404
Assets	2,030,944		2,103,174
United States
Segment Reporting Information [Line Items]
Revenues	110,500	81,100
Assets	$ 1,700,000		$ 1,700,000

XML

Property, Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Land	10,848		$ 10,920
Vehicles and machinery	114,860		114,150
Buildings and improvements	19,489	[1]	19,365	[1]
Office fixtures and equipment	35,198		33,942
Property, plant and equipment	180,395		178,377
Accumulated depreciation	(63,660)		(65,202)
Property, plant and equipment, net	116,735		$ 113,175
Vehicles and machinery | Minimum
Property, Plant and Equipment [Line Items]
Residual Value as Percentage of Original Cost	0.00%
Estimated useful life in years	5 years
Vehicles and machinery | Maximum
Property, Plant and Equipment [Line Items]
Residual Value as Percentage of Original Cost	55.00%
Estimated useful life in years	30 years
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Residual Value as Percentage of Original Cost	0.00%	[1]
Estimated useful life in years	3 years	[1]
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Residual Value as Percentage of Original Cost	25.00%	[1]
Estimated useful life in years	30 years	[1]
Office fixtures and equipment
Property, Plant and Equipment [Line Items]
Residual Value as Percentage of Original Cost	0.00%
Office fixtures and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life in years	3 years
Office fixtures and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life in years	5 years
Land
Property, Plant and Equipment [Line Items]
Residual Value as Percentage of Original Cost	0.00%

[1] Improvements made to leased properties are amortized over the lesser of the estimated remaining life or the remaining term of the respective lease.

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Condensed Consolidating Statements of Cash Flows (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities:
Net income	$ (27,326,000)	$ 7,440,000
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge	64,726,000	283,000
Provision for doubtful accounts	1,169,000	547,000
Amortization of deferred financing costs	789,000	703,000
Amortization of long-term liabilities	25,000	41,000
Share-based compensation expense	3,250,000	4,164,000
Depreciation and amortization	15,539,000	9,145,000
Gain on sale of rental fleet units	(1,972,000)	(1,711,000)
Loss on disposal of property, plant and equipment	335,000	72,000
Deferred income taxes	(18,233,000)	3,954,000
Foreign currency loss		1,000
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables	(636,000)	778,000
Inventories	157,000	228,000
Deposits and prepaid expenses	446,000	(1,276,000)
Other assets and intangibles	9,000	(5,000)
Accounts payable	1,033,000	3,061,000
Accrued liabilities	(839,000)	(613,000)
Net cash provided by operating activities	38,472,000	26,812,000
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired	(1,200,000)	(4,217,000)
Additions to rental fleet	(10,480,000)	(4,078,000)
Proceeds from sale of rental fleet units	4,842,000	5,627,000
Additions to property, plant and equipment	(4,241,000)	(2,628,000)
Proceeds from sale of property, plant and equipment	607,000	908,000
Net cash used in investing activities	(10,472,000)	(4,388,000)
Cash Flows from Financing Activities:
Net borrowings (repayments) under lines of credit	(4,137,000)	(16,307,000)
Deferred financing costs	(100,000)
Principal payments on capital lease obligations	(849,000)	(367,000)
Issuance of common stock	32,000	1,949,000
Dividend payments	(8,509,000)	(7,849,000)
Purchase of treasury stock	(15,284,000)	(407,000)
Net cash (used in) provided by financing activities	(28,847,000)	(22,981,000)
Effect of exchange rate changes on cash	156,000	(132,000)
Net (decrease) increase in cash	(691,000)	(689,000)
Cash and cash equivalents at beginning of period	3,739,000	1,256,000
Cash and cash equivalents at end of period	3,048,000	567,000
Eliminations
Changes in certain assets and liabilities, net of effect of businesses acquired:
Intercompany	161,000
Net cash provided by operating activities	161,000
Cash Flows from Financing Activities:
Net borrowings (repayments) under lines of credit	(154,000)
Principal payments on capital lease obligations	(7,000)
Net cash (used in) provided by financing activities	(161,000)
Guarantors
Cash Flows from Operating Activities:
Net income	(31,284,000)	5,208,000
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge	64,726,000	136,000
Provision for doubtful accounts	947,000	453,000
Amortization of deferred financing costs	775,000	687,000
Amortization of long-term liabilities	25,000	40,000
Share-based compensation expense	3,160,000	3,963,000
Depreciation and amortization	13,848,000	7,277,000
Gain on sale of rental fleet units	(1,826,000)	(1,500,000)
Loss on disposal of property, plant and equipment	219,000	48,000
Deferred income taxes	(19,192,000)	3,201,000
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables	188,000	1,404,000
Inventories	(75,000)	285,000
Deposits and prepaid expenses	348,000	(1,416,000)
Other assets and intangibles	9,000	(178,000)
Accounts payable	751,000	1,123,000
Accrued liabilities	(467,000)	(350,000)
Intercompany	683,000	756,000
Net cash provided by operating activities	32,835,000	21,137,000
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired		(4,217,000)
Additions to rental fleet	(5,745,000)	(1,834,000)
Proceeds from sale of rental fleet units	4,268,000	4,781,000
Additions to property, plant and equipment	(3,307,000)	(2,393,000)
Proceeds from sale of property, plant and equipment	243,000	708,000
Net cash used in investing activities	(4,541,000)	(2,955,000)
Cash Flows from Financing Activities:
Net borrowings (repayments) under lines of credit	(4,602,000)	(10,773,000)
Deferred financing costs	(100,000)
Principal payments on capital lease obligations	(828,000)	(367,000)
Issuance of common stock	32,000	1,949,000
Dividend payments	(8,509,000)	(7,849,000)
Purchase of treasury stock	(15,284,000)	(407,000)
Net cash (used in) provided by financing activities	(29,291,000)	(17,447,000)
Net (decrease) increase in cash	(997,000)	735,000
Cash and cash equivalents at beginning of period	2,977,000	(190,000)
Cash and cash equivalents at end of period	1,980,000	545,000
Non-Guarantors
Cash Flows from Operating Activities:
Net income	3,958,000	2,232,000
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge		147,000
Provision for doubtful accounts	222,000	94,000
Amortization of deferred financing costs	14,000	16,000
Amortization of long-term liabilities		1,000
Share-based compensation expense	90,000	201,000
Depreciation and amortization	1,691,000	1,868,000
Gain on sale of rental fleet units	(146,000)	(211,000)
Loss on disposal of property, plant and equipment	116,000	24,000
Deferred income taxes	959,000	753,000
Foreign currency loss		1,000
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables	(824,000)	(626,000)
Inventories	232,000	(57,000)
Deposits and prepaid expenses	98,000	140,000
Other assets and intangibles		173,000
Accounts payable	282,000	1,938,000
Accrued liabilities	(372,000)	(263,000)
Intercompany	(844,000)	(756,000)
Net cash provided by operating activities	5,476,000	5,675,000
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired	(1,200,000)
Additions to rental fleet	(4,735,000)	(2,244,000)
Proceeds from sale of rental fleet units	574,000	846,000
Additions to property, plant and equipment	(934,000)	(235,000)
Proceeds from sale of property, plant and equipment	364,000	200,000
Net cash used in investing activities	(5,931,000)	(1,433,000)
Cash Flows from Financing Activities:
Net borrowings (repayments) under lines of credit	619,000	(5,534,000)
Principal payments on capital lease obligations	(14,000)
Net cash (used in) provided by financing activities	605,000	(5,534,000)
Effect of exchange rate changes on cash	156,000	(132,000)
Net (decrease) increase in cash	306,000	(1,424,000)
Cash and cash equivalents at beginning of period	762,000	1,446,000
Cash and cash equivalents at end of period	$ 1,068,000	$ 22,000

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Number of Stock Options and Nonvested Share-Awards that were Issued or Outstanding but were Excluded in Calculating Diluted Earnings Per Share Because their Effect would have been Anti-Dilutive (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of dilutive EPS	1,108,000	641,000
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of dilutive EPS	1,108,000	641,000

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Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment at March 31, 2015 and December 31, 2014 consisted of the following:

	Residual Value as Percentage of Original Cost	Useful Life in Years	March 31, 2015			December 31, 2014
			(In thousands)
Land			$	10,848		$	10,920
Vehicles and machinery	0 - 55%	5 - 30		114,860			114,150
Buildings and improvements (1)	0 - 25	3 - 30		19,489			19,365
Office fixtures and equipment	0	3 - 5		35,198			33,942
Property, plant and equipment				180,395			178,377
Accumulated depreciation				(63,660	)		(65,202	)
Property, plant and equipment, net			$	116,735		$	113,175

(1) Improvements made to leased properties are amortized over the lesser of the estimated remaining life or the remaining term of the respective lease.

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Subsequent Events - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Apr. 29, 2015	Apr. 16, 2015	Jan. 21, 2015	Dec. 31, 2014	Nov. 06, 2013	Apr. 30, 2015	Apr. 17, 2015
Subsequent Event [Line Items]
Proceeds from sale of rental fleet units	$ 4,842,000	$ 5,627,000
Impairment loss	64,726,000	283,000
Stock repurchase program, current amount							125,000,000
Treasury stock, at cost	80,960,000					65,676,000
Dividend payable					$ 0.187
Dividend payable date	Mar. 19, 2015
Stockholder of record date	Mar. 05, 2015
Subsequent Event
Subsequent Event [Line Items]
Increased value of shares under stock repurchase program									50,000,000
Stock repurchase program, current amount									175,000,000
Amount available for repurchase under stock repurchase program								135,000,000
Dividend payable			$ 0.187
Dividend payable date			Jun. 03, 2015
Stockholder of record date			May 20, 2015
Subsequent Event | Share Repurchase Program
Subsequent Event [Line Items]
Treasury stock, at cost								40,000,000
Wood mobile offices
Subsequent Event [Line Items]
Definitive agreement date	Apr. 16, 2015
Impairment loss	64,726,000
Expected timing of transaction	The transaction is expected to be completed in May 2015
Wood mobile offices | Subsequent Event | Scenario Plan
Subsequent Event [Line Items]
Proceeds from sale of rental fleet units				92,000,000
Divestiture-related expenses				2,000,000
Deferred revenue				$ 6,600,000

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Activity and Balances Relating to Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill Beginning Balance	$ 705,608
Acquisition	128
Foreign currency	(3,318)
Adjustments	919
Goodwill Ending Balance	$ 703,337

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Condensed Consolidating Statements of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Revenues:
Rental	$ 121,028	$ 94,080
Sales	6,724	7,866
Other	4,877	458
Total revenues	132,629	102,404
Costs and expenses:
Cost of sales	4,197	5,553
Rental, selling and general expenses	83,982	68,356
Restructuring expenses	483	585	3,542
Asset impairment charge, net	64,726	283
Depreciation and amortization	15,539	9,145
Total costs and expenses	168,927	83,922
(Loss) income from operations	(36,298)	18,482
Other income (expense):
Interest expense	(9,059)	(6,987)
Foreign currency exchange		(1)
(Loss) income before income tax (benefit) provision	(45,357)	11,494
Income tax (benefit) provision	(18,031)	4,054
Net (loss) income	(27,326)	7,440
Eliminations
Other income (expense):
Interest income	(2,662)	(30)
Interest expense	2,662	30
Guarantors
Revenues:
Rental	100,018	74,268
Sales	5,669	6,527
Other	4,787	351
Total revenues	110,474	81,146
Costs and expenses:
Cost of sales	3,401	4,552
Rental, selling and general expenses	69,610	53,708
Restructuring expenses	483	397
Asset impairment charge, net	64,726	136
Depreciation and amortization	13,848	7,277
Total costs and expenses	152,068	66,070
(Loss) income from operations	(41,594)	15,076
Other income (expense):
Interest income	2,662	30
Interest expense	(11,343)	(6,599)
(Loss) income before income tax (benefit) provision	(50,275)	8,507
Income tax (benefit) provision	(18,991)	3,299
Net (loss) income	(31,284)	5,208
Non-Guarantors
Revenues:
Rental	21,010	19,812
Sales	1,055	1,339
Other	90	107
Total revenues	22,155	21,258
Costs and expenses:
Cost of sales	796	1,001
Rental, selling and general expenses	14,372	14,648
Restructuring expenses		188
Asset impairment charge, net		147
Depreciation and amortization	1,691	1,868
Total costs and expenses	16,859	17,852
(Loss) income from operations	5,296	3,406
Other income (expense):
Interest expense	(378)	(418)
Foreign currency exchange		(1)
(Loss) income before income tax (benefit) provision	4,918	2,987
Income tax (benefit) provision	960	755
Net (loss) income	$ 3,958	$ 2,232

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Condensed Consolidating Statements of Comprehensive (Loss) Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Statement of Income Captions [Line Items]
Net (loss) income	$ (27,326)	$ 7,440
Foreign currency translation adjustment	(11,777)	1,180
Comprehensive (loss) income	(39,103)	8,620
Guarantors
Condensed Statement of Income Captions [Line Items]
Net (loss) income	(31,284)	5,208
Comprehensive (loss) income	(31,284)	5,208
Non-Guarantors
Condensed Statement of Income Captions [Line Items]
Net (loss) income	3,958	2,232
Foreign currency translation adjustment	(11,777)	1,180
Comprehensive (loss) income	$ (7,819)	$ 3,412

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Segment Reporting (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Revenues:
Rental	$ 121,028	$ 94,080
Sales	6,724	7,866
Other	4,877	458
Total revenues	132,629	102,404
Costs and expenses:
Rental, selling and general expenses	83,982	68,356
Cost of sales	4,197	5,553
Restructuring expenses	483	585	3,542
Asset impairment charge, net	64,726	283
Depreciation and amortization	15,539	9,145
Total costs and expenses	168,927	83,922
(Loss) income from operations	(36,298)	18,482
Interest expense, net of interest income	9,059	6,987
Income tax (benefit) provision	(18,031)	4,054
Portable Storage
Revenues:
Rental	99,004	94,080
Sales	5,962	7,866
Other	1,529	458
Total revenues	106,495	102,404
Costs and expenses:
Rental, selling and general expenses	67,232	68,356
Cost of sales	3,864	5,553
Restructuring expenses	217	585
Asset impairment charge, net	64,726	283
Depreciation and amortization	9,466	9,145
Total costs and expenses	145,505	83,922
(Loss) income from operations	(39,010)	18,482
Interest expense, net of interest income	6,367	6,987
Income tax (benefit) provision	(18,039)	4,054
Portable Storage | North America
Revenues:
Rental	78,984	75,483
Sales	4,983	6,578
Other	1,439	354
Total revenues	85,406	82,415
Costs and expenses:
Rental, selling and general expenses	53,580	54,707
Cost of sales	3,122	4,590
Restructuring expenses	217	397
Asset impairment charge, net	64,726	159
Depreciation and amortization	7,890	7,418
Total costs and expenses	129,535	67,271
(Loss) income from operations	(44,129)	15,144
Interest expense, net of interest income	6,149	6,717
Income tax (benefit) provision	(18,998)	3,299
Portable Storage | United Kingdom
Revenues:
Rental	20,020	18,597
Sales	979	1,288
Other	90	104
Total revenues	21,089	19,989
Costs and expenses:
Rental, selling and general expenses	13,652	13,649
Cost of sales	742	963
Restructuring expenses		188
Asset impairment charge, net		124
Depreciation and amortization	1,576	1,727
Total costs and expenses	15,970	16,651
(Loss) income from operations	5,119	3,338
Interest expense, net of interest income	218	270
Income tax (benefit) provision	959	755
Specialty Containment
Revenues:
Rental	22,024
Sales	762
Other	3,348
Total revenues	26,134
Costs and expenses:
Rental, selling and general expenses	16,750
Cost of sales	333
Restructuring expenses	266
Depreciation and amortization	6,073
Total costs and expenses	23,422
(Loss) income from operations	2,712
Interest expense, net of interest income	2,692
Income tax (benefit) provision	$ 8

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Condensed Consolidating Financial Information

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Condensed Consolidating Financial Information

(19) Condensed Consolidating Financial Information

The following tables reflect the condensed consolidating financial information of the Company’s subsidiary guarantors of the Senior Notes and its non-guarantor subsidiaries. Separate financial statements of the subsidiary guarantors are not presented because the guarantee by each 100% owned subsidiary guarantor is full and unconditional, joint and several, subject to customary exceptions, and management has determined that such information is not material to investors.

MOBILE MINI, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

As of March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
ASSETS
Cash and cash equivalents	$	1,980		$	1,068		$	—		$	3,048
Receivables, net		60,310			18,694			—			79,004
Inventories		15,447			1,071			—			16,518
Rental fleet, net		868,049			151,614			—			1,019,663
Property, plant and equipment, net		100,180			16,555			—			116,735
Deposits and prepaid expenses		6,442			1,059			—			7,501
Deferred financing costs, net and other assets		8,173			—			—			8,173
Intangibles, net		76,259			706			—			76,965
Goodwill		636,863			66,474			—			703,337
Intercompany receivables		144,313			33,670			(177,983	)		—
Total assets	$	1,918,016		$	290,911		$	(177,983	)	$	2,030,944
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable	$	20,531		$	9,934		$	—		$	30,465
Accrued liabilities		57,658			6,932			—			64,590
Lines of credit		697,533			3,848			—			701,381
Obligations under capital leases		26,133			137			—			26,270
Senior Notes		200,000			—			—			200,000
Deferred income taxes		195,840			17,525			—			213,365
Intercompany payables		—			92			(92	)		—
Total liabilities		1,197,695			38,468			(92	)		1,236,071
Commitments and contingencies
Stockholders’ equity:
Common stock		491			18,388			(18,388	)		491
Additional paid-in capital		572,364			160,347			(160,347	)		572,364
Retained earnings		228,426			115,355			844			344,625
Accumulated other comprehensive loss		—			(41,647	)		—			(41,647	)
Treasury stock, at cost		(80,960	)		—			—			(80,960	)
Total stockholders’ equity		720,321			252,443			(177,891	)		794,873
Total liabilities and stockholders’ equity	$	1,918,016		$	290,911		$	(177,983	)	$	2,030,944

MOBILE MINI, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

As of December 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
ASSETS
Cash and cash equivalents	$	2,977		$	762		$	—		$	3,739
Receivables, net		62,033			18,998			—			81,031
Inventories		15,371			1,365			—			16,736
Rental fleet, net		934,433			152,623			—			1,087,056
Property, plant and equipment, net		95,509			17,666			—			113,175
Deposits and prepaid expenses		7,375			1,211			—			8,586
Deferred financing costs, net and other assets		8,858			—			—			8,858
Intangibles, net		77,629			756			—			78,385
Goodwill		635,943			69,665			—			705,608
Intercompany receivables		145,018			33,971			(178,989	)		—
Total assets	$	1,985,146		$	297,017		$	(178,989	)	$	2,103,174
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable	$	14,803		$	8,130		$	—		$	22,933
Accrued liabilities		56,104			7,623			—			63,727
Lines of credit		702,135			3,383			—			705,518
Obligations under capital leases		24,760			158			—			24,918
Senior Notes		200,000			—			—			200,000
Deferred income taxes		215,184			17,367			(1,004	)		231,547
Intercompany payables		—			94			(94	)		—
Total liabilities		1,212,986			36,755			(1,098	)		1,248,643
Commitments and contingencies
Stockholders’ equity:
Common stock		490			18,388			(18,388	)		490
Additional paid-in capital		569,083			160,347			(160,347	)		569,083
Retained earnings		268,263			111,397			844			380,504
Accumulated other comprehensive loss		—			(29,870	)		—			(29,870	)
Treasury stock, at cost		(65,676	)		—			—			(65,676	)
Total stockholders’ equity		772,160			260,262			(177,891	)		854,531
Total liabilities and stockholders’ equity	$	1,985,146		$	297,017		$	(178,989	)	$	2,103,174

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Rental	$	100,018		$	21,010		$	—		$	121,028
Sales		5,669			1,055			—			6,724
Other		4,787			90			—			4,877
Total revenues		110,474			22,155			—			132,629
Costs and expenses:
Rental, selling and general expenses		69,610			14,372			—			83,982
Cost of sales		3,401			796			—			4,197
Restructuring expenses		483			—			—			483
Asset impairment charge		64,726			—			—			64,726
Depreciation and amortization		13,848			1,691			—			15,539
Total costs and expenses		152,068			16,859			—			168,927
(Loss) income from operations		(41,594	)		5,296			—			(36,298	)
Other income (expense):
Interest income		2,662			—			(2,662	)		—
Interest expense		(11,343	)		(378	)		2,662			(9,059	)
(Loss) income before income tax provision		(50,275	)		4,918			—			(45,357	)
Income tax (benefit) provision		(18,991	)		960			—			(18,031	)
Net (loss) income	$	(31,284	)	$	3,958		$	—		$	(27,326	)

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE (LOSS) INCOME

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations		Consolidated
Net (loss) income	$	(31,284	)	$	3,958		$	—	$	(27,326	)
Foreign currency translation adjustment		—			(11,777	)		—		(11,777	)
Comprehensive loss	$	(31,284	)	$	(7,819	)	$	—	$	(39,103	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

Three Months Ended March 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Rental	$	74,268		$	19,812		$	—		$	94,080
Sales		6,527			1,339			—			7,866
Other		351			107			—			458
Total revenues		81,146			21,258			—			102,404
Costs and expenses:
Cost of sales		4,552			1,001			—			5,553
Rental, selling and general expenses		53,708			14,648			—			68,356
Restructuring expenses		397			188			—			585
Asset impairment charge, net		136			147			—			283
Depreciation and amortization		7,277			1,868			—			9,145
Total costs and expenses		66,070			17,852			—			83,922
Income from operations		15,076			3,406			—			18,482
Other income (expense):
Interest income		30			—			(30	)		—
Interest expense		(6,599	)		(418	)		30			(6,987	)
Foreign currency exchange		—			(1	)		—			(1	)
Income before income tax provision		8,507			2,987			—			11,494
Income tax provision		3,299			755			—			4,054
Net income	$	5,208		$	2,232		$	—		$	7,440

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

Three Months Ended March 31, 2014

(In thousands)

	Guarantors		Non- Guarantors		Eliminations		Consolidated
Net income	$	5,208	$	2,232	$	—	$	7,440
Foreign currency translation adjustment		—		1,180		—		1,180
Comprehensive income	$	5,208	$	3,412	$	—	$	8,620

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Net income	$	(31,284	)	$	3,958		$	—		$	(27,326	)
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge		64,726			—			—			64,726
Provision for doubtful accounts		947			222			—			1,169
Amortization of deferred financing costs		775			14			—			789
Amortization of long-term liabilities		25			—			—			25
Share-based compensation expense		3,160			90			—			3,250
Depreciation and amortization		13,848			1,691			—			15,539
Gain on sale of rental fleet units		(1,826	)		(146	)		—			(1,972	)
Loss on disposal of property, plant and equipment		219			116			—			335
Deferred income taxes		(19,192	)		959			—			(18,233	)
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables		188			(824	)		—			(636	)
Inventories		(75	)		232			—			157
Deposits and prepaid expenses		348			98			—			446
Other assets and intangibles		9			—			—			9
Accounts payable		751			282			—			1,033
Accrued liabilities		(467	)		(372	)		—			(839	)
Intercompany		683			(844	)		161			—
Net cash provided by operating activities		32,835			5,476			161			38,472
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired		—			(1,200	)		—			(1,200	)
Additions to rental fleet		(5,745	)		(4,735	)		—			(10,480	)
Proceeds from sale of rental fleet units		4,268			574			—			4,842
Additions to property, plant and equipment		(3,307	)		(934	)		—			(4,241	)
Proceeds from sale of property, plant and equipment		243			364			—			607
Net cash used in investing activities		(4,541	)		(5,931	)		—			(10,472	)
Cash Flows from Financing Activities:
Net borrowings (repayments) under lines of credit		(4,602	)		619			(154	)		(4,137	)
Deferred financing costs		(100	)		—			—			(100	)
Principal payments on capital lease obligations		(828	)		(14	)		(7	)		(849	)
Issuance of common stock		32			—			—			32
Dividend payments		(8,509	)		—			—			(8,509	)
Purchase of treasury stock		(15,284	)		—			—			(15,284	)
Net cash (used in) provided by financing activities		(29,291	)		605			(161	)		(28,847	)
Effect of exchange rate changes on cash		—			156			—			156
Net (decrease) increase in cash		(997	)		306			—			(691	)
Cash and cash equivalents at beginning of period		2,977			762			—			3,739
Cash and cash equivalents at end of period	$	1,980		$	1,068		$	—		$	3,048

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

Three Months Ended March 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations		Consolidated
Cash Flows from Operating Activities:
Net income	$	5,208		$	2,232		$	—	$	7,440
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge, net		136			147			—		283
Provision for doubtful accounts		453			94			—		547
Amortization of deferred financing costs		687			16			—		703
Amortization of long-term liabilities		40			1			—		41
Share-based compensation expense		3,963			201			—		4,164
Depreciation and amortization		7,277			1,868			—		9,145
Gain on sale of rental fleet units		(1,500	)		(211	)		—		(1,711	)
Loss on disposal of property, plant and equipment		48			24			—		72
Deferred income taxes		3,201			753			—		3,954
Foreign currency loss		—			1			—		1
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables		1,404			(626	)		—		778
Inventories		285			(57	)		—		228
Deposits and prepaid expenses		(1,416	)		140			—		(1,276	)
Other assets and intangibles		(178	)		173			—		(5	)
Accounts payable		1,123			1,938			—		3,061
Accrued liabilities		(350	)		(263	)		—		(613	)
Intercompany		756			(756	)		—		—
Net cash provided by operating activities		21,137			5,675			—		26,812
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired		(4,217	)		—			—		(4,217	)
Additions to rental fleet		(1,834	)		(2,244	)		—		(4,078	)
Proceeds from sale of rental fleet units		4,781			846			—		5,627
Additions to property, plant and equipment		(2,393	)		(235	)		—		(2,628	)
Proceeds from sale of property, plant and equipment		708			200			—		908
Net cash used in investing activities		(2,955	)		(1,433	)		—		(4,388	)
Cash Flows from Financing Activities:
Net repayments under lines of credit		(10,773	)		(5,534	)		—		(16,307	)
Principal payments on capital lease obligations		(367	)		—			—		(367	)
Issuance of common stock		1,949			—			—		1,949
Dividend payments		(7,849	)		—			—		(7,849	)
Purchase of treasury stock		(407	)		—			—		(407	)
Net cash used in financing activities		(17,447	)		(5,534	)		—		(22,981	)
Effect of exchange rate changes on cash		—			(132	)		—		(132	)
Net increase (decrease) in cash		735			(1,424	)		—		(689	)
Cash and cash equivalents at beginning of period		(190	)		1,446			—		1,256
Cash and cash equivalents at end of period	$	545		$	22		$	—	$	567

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Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 14,569	$ 14,241
Work-in-process	212	201
Finished portable storage units	1,737	2,294
Inventories	$ 16,518	$ 16,736

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Carrying and Fair Value of Senior Notes (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Carrying value	$ 200,000	$ 200,000
Senior Notes 7.875 Percent Due 2020
Debt Instrument [Line Items]
Carrying value	200,000	200,000
Fair value	$ 211,000	$ 206,000

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Condensed Consolidating Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 3,048	$ 3,739	$ 567	$ 1,256
Receivables, net	79,004	81,031
Inventories	16,518	16,736
Rental fleet, net	1,019,663	1,087,056
Property, plant and equipment, net	116,735	113,175
Deposits and prepaid expenses	7,501	8,586
Deferred financing costs, net and other assets	8,173	8,858
Intangibles, net	76,965	78,385
Goodwill	703,337	705,608
Total assets	2,030,944	2,103,174
Liabilities:
Accounts payable	30,465	22,933
Accrued liabilities	64,590	63,727
Lines of credit	701,381	705,518
Obligations under capital leases	26,270	24,918
Senior Notes	200,000	200,000
Deferred income taxes	213,365	231,547
Total liabilities	1,236,071	1,248,643
Commitments and contingencies
Stockholders' equity:
Common stock	491	490
Additional paid-in capital	572,364	569,083
Retained earnings	344,625	380,504
Accumulated other comprehensive loss	(41,647)	(29,870)
Treasury stock, at cost	(80,960)	(65,676)
Total stockholders' equity	794,873	854,531
Total liabilities and stockholders' equity	2,030,944	2,103,174
Eliminations
ASSETS
Intercompany receivables	(177,983)	(178,989)
Total assets	(177,983)	(178,989)
Liabilities:
Deferred income taxes		(1,004)
Intercompany payables	(92)	(94)
Total liabilities	(92)	(1,098)
Commitments and contingencies
Stockholders' equity:
Common stock	(18,388)	(18,388)
Additional paid-in capital	(160,347)	(160,347)
Retained earnings	844	844
Total stockholders' equity	(177,891)	(177,891)
Total liabilities and stockholders' equity	(177,983)	(178,989)
Guarantors
ASSETS
Cash and cash equivalents	1,980	2,977	545	(190)
Receivables, net	60,310	62,033
Inventories	15,447	15,371
Rental fleet, net	868,049	934,433
Property, plant and equipment, net	100,180	95,509
Deposits and prepaid expenses	6,442	7,375
Deferred financing costs, net and other assets	8,173	8,858
Intangibles, net	76,259	77,629
Goodwill	636,863	635,943
Intercompany receivables	144,313	145,018
Total assets	1,918,016	1,985,146
Liabilities:
Accounts payable	20,531	14,803
Accrued liabilities	57,658	56,104
Lines of credit	697,533	702,135
Obligations under capital leases	26,133	24,760
Senior Notes	200,000	200,000
Deferred income taxes	195,840	215,184
Total liabilities	1,197,695	1,212,986
Commitments and contingencies
Stockholders' equity:
Common stock	491	490
Additional paid-in capital	572,364	569,083
Retained earnings	228,426	268,263
Treasury stock, at cost	(80,960)	(65,676)
Total stockholders' equity	720,321	772,160
Total liabilities and stockholders' equity	1,918,016	1,985,146
Non-Guarantors
ASSETS
Cash and cash equivalents	1,068	762	22	1,446
Receivables, net	18,694	18,998
Inventories	1,071	1,365
Rental fleet, net	151,614	152,623
Property, plant and equipment, net	16,555	17,666
Deposits and prepaid expenses	1,059	1,211
Intangibles, net	706	756
Goodwill	66,474	69,665
Intercompany receivables	33,670	33,971
Total assets	290,911	297,017
Liabilities:
Accounts payable	9,934	8,130
Accrued liabilities	6,932	7,623
Lines of credit	3,848	3,383
Obligations under capital leases	137	158
Deferred income taxes	17,525	17,367
Intercompany payables	92	94
Total liabilities	38,468	36,755
Commitments and contingencies
Stockholders' equity:
Common stock	18,388	18,388
Additional paid-in capital	160,347	160,347
Retained earnings	115,355	111,397
Accumulated other comprehensive loss	(41,647)	(29,870)
Total stockholders' equity	252,443	260,262
Total liabilities and stockholders' equity	$ 290,911	$ 297,017

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Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Segment Reporting

The following tables set forth certain information regarding each of the Company’s segments for the three month periods ended March 31, 2015 and 2014.

	For the Three Months Ended March 31, 2015
	Portable Storage
	North America			United Kingdom		Total			Specialty Containment		Consolidated
	(In thousands)
Revenues:
Rental	$	78,984		$	20,020	$	99,004		$	22,024	$	121,028
Sales		4,983			979		5,962			762		6,724
Other		1,439			90		1,529			3,348		4,877
Total revenues		85,406			21,089		106,495			26,134		132,629
Costs and expenses:
Rental, selling and general expenses		53,580			13,652		67,232			16,750		83,982
Cost of sales		3,122			742		3,864			333		4,197
Restructuring expenses		217			—		217			266		483
Asset impairment charge, net		64,726			—		64,726			—		64,726
Depreciation and amortization		7,890			1,576		9,466			6,073		15,539
Total costs and expenses		129,535			15,970		145,505			23,422		168,927
(Loss) income from operations	$	(44,129	)	$	5,119	$	(39,010	)	$	2,712	$	(36,298	)
Interest expense, net of interest income	$	6,149		$	218	$	6,367		$	2,692	$	9,059
Income tax (benefit) provision		(18,998	)		959		(18,039	)		8		(18,031	)

	For the Three Months Ended March 31, 2014
	Portable Storage
	North America		United Kingdom		Total		Specialty Containment		Consolidated
	(In thousands)
Revenues:
Rental	$	75,483	$	18,597	$	94,080	$	—	$	94,080
Sales		6,578		1,288		7,866		—		7,866
Other		354		104		458		—		458
Total revenues		82,415		19,989		102,404		—		102,404
Costs and expenses:
Rental, selling and general expenses		54,707		13,649		68,356		—		68,356
Cost of sales		4,590		963		5,553		—		5,553
Restructuring expenses		397		188		585		—		585
Asset impairment charge, net		159		124		283		—		283
Depreciation and amortization		7,418		1,727		9,145		—		9,145
Total costs and expenses		67,271		16,651		83,922		—		83,922
Income from operations	$	15,144	$	3,338	$	18,482	$	—	$	18,482
Interest expense, net of interest income	$	6,717	$	270	$	6,987	$	—	$	6,987
Income tax provision		3,299		755		4,054		—		4,054

Assets Segments

Assets related to the Company’s segments include the following:

	Portable Storage
	North America		United Kingdom		Total		Specialty Containment		Consolidated
	(In thousands)
As of March 31, 2015:
Goodwill	$	458,852	$	61,634	$	520,486	$	182,851	$	703,337
Intangibles		1,912		618		2,530		74,435		76,965
Rental Fleet		755,434		140,732		896,166		123,497		1,019,663
Property Plant and Equipment		87,153		15,511		102,664		14,071		116,735
As of December 31, 2014:
Goodwill	$	459,234	$	64,402	$	523,636	$	181,972	$	705,608
Intangibles		2,119		651		2,770		75,615		78,385
Rental Fleet		825,158		140,679		965,837		121,219		1,087,056
Property Plant and Equipment		82,514		16,488		99,002		14,173		113,175

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Rental Fleet (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Property Subject to or Available for Operating Lease [Line Items]
Total fleet, net	$ 1,019,663		$ 1,087,056
Portable Storage
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross	1,082,375		1,148,274
Accumulated depreciation	(186,209)		(182,437)
Total fleet, net	896,166		965,837
Portable Storage | Steel storage containers
Property Subject to or Available for Operating Lease [Line Items]
Residual Value as Percentage of Original Cost	55.00%	[1]
Useful Life in Years	30 years
Rental fleet, gross	602,360		604,547
Portable Storage | Ground level offices
Property Subject to or Available for Operating Lease [Line Items]
Residual Value as Percentage of Original Cost	55.00%	[1]
Useful Life in Years	30 years
Rental fleet, gross	330,891		329,565
Portable Storage | Wood mobile offices
Property Subject to or Available for Operating Lease [Line Items]
Residual Value as Percentage of Original Cost	50.00%	[1]
Useful Life in Years	20 years
Rental fleet, gross	143,894		208,529
Portable Storage | Other
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross	5,230		5,633
Specialty Containment
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross	128,634		122,489
Accumulated depreciation	(5,137)		(1,270)
Total fleet, net	123,497		121,219
Specialty Containment | Other
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross	5,954		5,468
Specialty Containment | Steel tanks
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years	25 years
Rental fleet, gross	52,031		50,843
Specialty Containment | Roll-off boxes
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross	23,247		19,820
Specialty Containment | Roll-off boxes | Minimum
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years	15 years
Specialty Containment | Roll-off boxes | Maximum
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years	20 years
Specialty Containment | Stainless steel tank trailers
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years	25 years
Rental fleet, gross	8,189		7,667
Specialty Containment | Vacuum Boxes
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years	20 years
Rental fleet, gross	23,287		23,283
Specialty Containment | De-watering boxes
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years	20 years
Rental fleet, gross	4,271		3,898
Specialty Containment | Pumps and filtration equipment
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years	7 years
Rental fleet, gross	$ 11,655		$ 11,510

[1] Specialty containment fleet has been assigned zero residual value.

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Accrued Restructuring Obligations and Related Activity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Accrued obligations, beginning balance	$ 1,117	$ 1,676		$ 1,676
Restructuring expense	483	585		3,542
Settlement of obligations	(218)			(4,101)
Accrued obligations, ending balance	1,382			1,117
Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Accrued obligations, beginning balance	441	613		613
Restructuring expense	464	340		1,826
Settlement of obligations	(157)			(1,998)
Accrued obligations, ending balance	748			441
Lease Abandonment Costs
Restructuring Cost and Reserve [Line Items]
Accrued obligations, beginning balance	676	1,063		1,063
Restructuring expense	19	139		318
Settlement of obligations	(61)			(705)
Accrued obligations, ending balance	634			676
Other Costs
Restructuring Cost and Reserve [Line Items]
Accrued obligations, beginning balance
Restructuring expense		106	[1]	1,398
Settlement of obligations				(1,398)
Accrued obligations, ending balance

[1] Other costs for 2014 include the sale of the Company's Belfast, Northern Ireland location.

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Income Taxes - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
Income Taxes [Line Items]
Tax year subject to tax examination for U.S. Federal return	For the U.S. Federal return, its tax years for 2011, 2012 and 2013 are subject to tax examination by the U.S. Internal Revenue Service through September 15, 2015, 2016 and 2017, respectively. The Company does not anticipate that the total amount of unrecognized tax benefit related to any particular tax position will change significantly within the next 12 months.
Internal Revenue Service (IRS) | Tax Year 2011
Income Taxes [Line Items]
U.S. Federal return, tax year subject to examination	2011
Internal Revenue Service (IRS) | Tax Year 2012
Income Taxes [Line Items]
U.S. Federal return, tax year subject to examination	2012
Internal Revenue Service (IRS) | Tax Year 2013
Income Taxes [Line Items]
U.S. Federal return, tax year subject to examination	2013
Minimum
Income Taxes [Line Items]
Step two threshold to quantify uncertain tax position	50.00%

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Schedule of Assets Impaired and Impairment Loss Recognized (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Long Lived Assets Held-for-sale [Line Items]
Estimated fair market value	$ 92,000
Property, plant and equipment, net	116,735		113,175
Impairment loss	(64,726)	(283)
Wood mobile offices in rental fleet
Long Lived Assets Held-for-sale [Line Items]
Property, plant and equipment, net	155,558
Ancillary items in property, plant and equipment
Long Lived Assets Held-for-sale [Line Items]
Property, plant and equipment, net	$ 1,168

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Fair Value Measurements

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements

(3) Fair Value Measurements

The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the Company adopted the suggested accounting guidance for the three levels of inputs that may be used to measure fair value:     

Level 1 —	Observable inputs such as quoted prices in active markets for identical assets or liabilities;
Level 2 —	Observable inputs, other than Level 1 inputs in active markets, that are observable either directly or indirectly; and
Level 3 —	Unobservable inputs for which there is little or no market data, which require the reporting entity to develop its own assumptions.

At March 31, 2015 and December 31, 2014, the Company did not have any financial instruments required to be recorded at fair value on a recurring basis.

The carrying amounts of cash, receivables, accounts payable and accrued liabilities approximate fair values based on their short-term nature. The fair values of the Company’s revolving credit facility and capital leases are estimated using discounted cash flow analyses, based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements. Based on the borrowing rates currently available to the Company for bank loans with similar terms and average maturities, the fair value of the Company’s revolving credit facility debt and capital leases at March 31, 2015 and December 31, 2014 approximated their respective book values and are considered Level 2 in the fair value hierarchy.

The fair value of the Company’s $200.0 million aggregate principal amount of 7.875% senior notes due 2020 (the “2020 Notes” or the “Senior Notes”) is based on their latest sales price at the end of each period obtained from a third-party institution and is considered Level 2 in the fair value hierarchy, as there is not an active market for these notes.

The carrying value and the fair value of the Company’s Senior Notes are as follows:

	March 31, 2015		December 31, 2014
	(In thousands)
Carrying value	$	200,000	$	200,000
Fair value		211,000		206,000

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Share-based Compensation - Additional Information (Detail) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share available for future grants	2.5
Stock options contractual terms	8 years 1 month 10 days
Aggregate intrinsic value of options exercised	$ 23,000
Weighted average fair value of stock options granted	$ 8.42
Fair value of share-awards vested	1,000,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	10,100,000
Weighted average recognition period (years)	1 year 8 months 12 days
Nonvested share-awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 9,900,000
Weighted average recognition period (years)	2 years 7 months 6 days

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Reconciliation of Net (loss) Income and Weighted-Average Shares of Common Stock Outstanding for Purposes of Calculating Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Net (loss) income	$ (27,326)	$ 7,440
Basic EPS Denominator:
Common shares outstanding beginning of year	45,814	46,084
Weighted shares issued (repurchased) during the period	(330)	64
Total weighted average shares outstanding	45,484	46,148
Diluted EPS Denominator:
Common shares outstanding beginning of year	45,814	46,084
Net weighted shares issued (repurchased) during the period	(330)	64
Dilutive effect of stock options and nonvested share awards during the period		689	[1]
Total weighted average shares outstanding	45,484	46,837
(Loss) earnings per share:
Basic	$ (0.60)	$ 0.16
Diluted	$ (0.60)	$ 0.16

[1] Common stock equivalents of approximately 570,000 were excluded from the calculation of diluted earnings per share for the quarter ending March 31, 2015 because their inclusion would reduce the net loss per share.

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Impairment of North American Wood Mobile Offices (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Assets Impaired and Impairment Loss Recognized

Based on this review, management determined that the assets were impaired as of March 31, 2015 and an impairment loss, was recognized in the amount by which the carrying amount of the asset group exceeded the estimated fair value as follows:

	March 31, 2015
	(In thousands)
Estimated fair market value	$	92,000
Net book value:
Wood mobile offices in rental fleet		155,558
Ancillary items in property, plant and equipment		1,168
Impairment loss	$	(64,726	)

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(Loss) Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Reconciliation of Net (Loss) Income and Weighted-Average Shares of Common Stock Outstanding for Purposes of Calculating Basic and Diluted Earnings Per Share

The following table is a reconciliation of net (loss) income and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted EPS for the three months ended March 31:

	Three Months Ended March 31,
	2015			2014
	(In thousands, except per share data)
Numerator:
Net (loss) income	$	(27,326	)	$	7,440
Basic EPS Denominator:
Common shares outstanding beginning of year		45,814			46,084
Weighted shares issued (repurchased) during the period		(330	)		64
Total weighted average shares outstanding		45,484			46,148
Diluted EPS Denominator:
Common shares outstanding beginning of year		45,814			46,084
Net weighted shares issued (repurchased) during the period		(330	)		64
Dilutive effect of stock options and nonvested share awards during the period (1)		—			689
Total weighted average shares outstanding		45,484			46,837
(Loss) earnings per share:
Basic	$	(0.60	)	$	0.16
Diluted		(0.60	)		0.16

(1) Common stock equivalents of approximately 570,000 were excluded from the calculation of diluted earnings per share for the quarter ending March 31, 2015 because their inclusion would reduce the net loss per share.

Number of Stock Options and Nonvested Share-Awards that were Issued or Outstanding but were Excluded in Calculating Diluted Earnings Per Share Because their Effect would have been Anti-Dilutive

The following table represents the number of stock options and nonvested share-awards that were issued or outstanding but excluded in calculating diluted EPS because their effect would have been anti-dilutive for the quarters ended March 31:

	Three Months Ended March 31,
	2015		2014
	(In thousands)
Stock options		1,108		641
Nonvested share-awards		—		—
Total		1,108		641

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Goodwill and Intangibles - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Adjustments	$ 919,000
Amortization of all other intangibles	$ 1,500,000	$ 300,000

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Reconciliation of Net (loss) Income and Weighted-Average Shares of Common Stock Outstanding for Purposes of Calculating Basic and Diluted Earnings Per Share (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share Disclosure [Line Items]
Common stock equivalents excluded from the calculation of diluted earnings per share	1,108,000	641,000
Common Stock Equivalents
Earnings Per Share Disclosure [Line Items]
Common stock equivalents excluded from the calculation of diluted earnings per share	570,000

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Acquisition (Tables)

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Schedule of Components of Purchase Price and Net Assets Acquired

The components of the purchase price and net assets acquired during the three months ended March 31, 2015 are as follows (in thousands):

Net Assets Acquired:
Rental fleet	$	991
Intangible assets:
Customer relationships		57
Non-compete agreements		24
Goodwill		128
Total purchase price	$	1,200

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Inventories (Tables)

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Inventories

Inventories at March 31, 2015 and December 31, 2014 consisted of the following:

	March 31, 2015		December 31, 2014
	(In thousands)
Raw materials and supplies	$	14,569	$	14,241
Work-in-process		212		201
Finished portable storage units		1,737		2,294
Inventories	$	16,518	$	16,736

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Recent Accounting Pronouncements

3 Months Ended

Mar. 31, 2015

Accounting Changes and Error Corrections [Abstract]

Recent Accounting Pronouncements

(2) Recent Accounting Pronouncements

Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. In April 2014, the Financial Accounting Standards Board (“FASB”) issued the accounting guidance on reporting discontinued operations and disclosures of disposals of components of an entity. The new guidance raises the threshold for a disposal to qualify as a discontinued operation and requires new disclosures of both discontinued operations and certain other disposals that do not meet the definition of a discontinued operation. The guidance is effective for fiscal years beginning after December 15, 2014. The Company will apply this guidance prospectively to transactions occurring after December 31, 2014.

Revenue from Contracts with Customers. In May 2014, FASB issued the accounting standard on revenue from contracts with customers. The standard provides a single model for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The standard requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of goods or services. The standard is effective for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted. The revenue recognition standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the impact, if any, of the adoption of the standard to its financial statements and related disclosures. The Company has not yet selected a transition method nor determined the effect of the standard on its ongoing financial reporting.

Simplifying the Presentation of Debt Issuance Costs. In April 2015, FASB issued accounting guidance on the presentation of debt issuance costs in the balance sheet. This standard requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by this guidance. The Company will apply this guidance prospectively beginning in the fiscal year ended December 31, 2017. The application of this guidance will result in a reclassification of debt financing costs from other assets to a reduction of the specific debt liability, and will not affect the Company’s statement of operations or cash flow. As of March 31, 2015, the Company’s debt financing costs, net of accumulated amortization is $8.0 million.

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Rental Fleet (Tables)

3 Months Ended

Mar. 31, 2015

Text Block [Abstract]

Rental Fleet

Rental fleet consisted of the following at March 31, 2015 and December 31, 2014:

	Residual Value as Percentage of Original Cost (1)			Useful Life in Years	March 31, 2015			December 31, 2014
					(In thousands)
Portable Storage:
Steel storage containers		55	%	30	$	602,360		$	604,547
Ground level offices		55	%	30		330,891			329,565
Wood mobile offices		50	%	20		143,894			208,529
Other						5,230			5,633
Total						1,082,375			1,148,274
Accumulated depreciation						(186,209	)		(182,437	)
Total portable storage fleet, net					$	896,166		$	965,837
Specialty Containment:
Steel tanks				25	$	52,031		$	50,843
Roll-off boxes				15 - 20		23,247			19,820
Stainless steel tank trailers				25		8,189			7,667
Vacuum boxes				20		23,287			23,283
De-watering boxes				20		4,271			3,898
Pumps and filtration equipment				7		11,655			11,510
Other						5,954			5,468
Total						128,634			122,489
Accumulated depreciation						(5,137	)		(1,270	)
Total specialty containment fleet, net					$	123,497		$	121,219
Total rental fleet, net					$	1,019,663		$	1,087,056

(1) Specialty containment fleet has been assigned zero residual value.

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Recent Accounting Pronouncements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Deferred Costs [Abstract]
Debt financing costs, net of accumulated amortization	$ 8.0

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Rental Fleet (Parenthetical) (Detail) (Specialty Containment, USD $)	Mar. 31, 2015
Specialty Containment
Property Subject to or Available for Operating Lease [Line Items]
Residual value	$ 0

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Assets Segments (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	$ 703,337	$ 705,608
Intangibles	76,965	78,385
Rental Fleet	1,019,663	1,087,056
Property Plant and Equipment	116,735	113,175
Portable Storage
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	520,486	523,636
Intangibles	2,530	2,770
Rental Fleet	896,166	965,837
Property Plant and Equipment	102,664	99,002
Portable Storage | North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	458,852	459,234
Intangibles	1,912	2,119
Rental Fleet	755,434	825,158
Property Plant and Equipment	87,153	82,514
Portable Storage | United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	61,634	64,402
Intangibles	618	651
Rental Fleet	140,732	140,679
Property Plant and Equipment	15,511	16,488
Specialty Containment
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	182,851	181,972
Intangibles	74,435	75,615
Rental Fleet	123,497	121,219
Property Plant and Equipment	$ 14,071	$ 14,173

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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents	$ 3,048	$ 3,739
Receivables, net of allowance for doubtful accounts of $3,307 and $2,442 at March 31, 2015 and December 31, 2014, respectively	79,004	81,031
Inventories	16,518	16,736
Rental fleet, net	1,019,663	1,087,056
Property, plant and equipment, net	116,735	113,175
Deposits and prepaid expenses	7,501	8,586
Deferred financing costs, net and other assets	8,173	8,858
Intangibles, net	76,965	78,385
Goodwill	703,337	705,608
Total assets	2,030,944	2,103,174
Liabilities:
Accounts payable	30,465	22,933
Accrued liabilities	64,590	63,727
Lines of credit	701,381	705,518
Obligations under capital leases	26,270	24,918
Senior Notes	200,000	200,000
Deferred income taxes	213,365	231,547
Total liabilities	1,236,071	1,248,643
Commitments and contingencies
Stockholders' equity:
Preferred stock $.01 par value, 20,000 shares authorized, none issued
Common stock $.01 par value, 95,000 shares authorized, 49,087 issued and 45,835 outstanding at March 31, 2015 and 49,015 issued and 46,157 outstanding at December 31, 2014	491	490
Additional paid-in capital	572,364	569,083
Retained earnings	344,625	380,504
Accumulated other comprehensive loss	(41,647)	(29,870)
Treasury stock, at cost, 3,252 and 2,858 shares at March 31, 2015 and December 31, 2014, respectively	(80,960)	(65,676)
Total stockholders' equity	794,873	854,531
Total liabilities and stockholders' equity	$ 2,030,944	$ 2,103,174

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(Loss) Earnings Per Share - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Nonvested share-awards not included in basic weighted average number of common shares outstanding	0.4	0.5

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities:
Net (loss) income	$ (27,326)	$ 7,440
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge, net	64,726	283
Provision for doubtful accounts	1,169	547
Amortization of deferred financing costs	789	703
Amortization of long-term liabilities	25	41
Share-based compensation expense	3,250	4,164
Depreciation and amortization	15,539	9,145
Gain on sale of rental fleet units	(1,972)	(1,711)
Loss on disposal of property, plant and equipment	335	72
Deferred income taxes	(18,233)	3,954
Foreign currency loss		1
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables	(636)	778
Inventories	157	228
Deposits and prepaid expenses	446	(1,276)
Other assets and intangibles	9	(5)
Accounts payable	1,033	3,061
Accrued liabilities	(839)	(613)
Net cash provided by operating activities	38,472	26,812
Cash Flows from Investing Activities:
Cash paid for businesses acquired, net of cash acquired	(1,200)	(4,217)
Additions to rental fleet, excluding acquisitions	(10,480)	(4,078)
Proceeds from sale of rental fleet units	4,842	5,627
Additions to property, plant and equipment, excluding acquisitions	(4,241)	(2,628)
Proceeds from sale of property, plant and equipment	607	908
Net cash used in investing activities	(10,472)	(4,388)
Cash Flows from Financing Activities:
Net repayments under lines of credit	(4,137)	(16,307)
Deferred financing costs	(100)
Principal payments on capital lease obligations	(849)	(367)
Issuance of common stock	32	1,949
Dividend payments	(8,509)	(7,849)
Purchase of treasury stock	(15,284)	(407)
Net cash used in financing activities	(28,847)	(22,981)
Effect of exchange rate changes on cash	156	(132)
Net decrease in cash	(691)	(689)
Cash and cash equivalents at beginning of period	3,739	1,256
Cash and cash equivalents at end of period	3,048	567
Supplemental Disclosure of Cash Flow Information:
Equipment acquired through capital lease obligations	2,201	1,983
Capital expenditures accrued or payable	$ 9,624	$ 1,246

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Schedule of Expected Future Amortization of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2015 (remaining)	$ 4,387
2016	5,931
2017	5,921
2018	5,973
2019	6,011
Thereafter	48,742
Net Carrying Amount	$ 76,965	$ 78,385

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Share-based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Key Assumptions Used to Estimate Fair Value of Stock Options Granted

The following are the key assumptions used for options granted during the three month periods ended March 31:

	2015	2014
Risk-free interest rate	1.3% - 1.5%		1.5	%
Expected life of the options (years)	5		5
Expected stock price volatility	35.6% - 35.7%		38.4	%
Expected dividend rate	1.8% - 2.0%		1.6	%

Stock Option Activity

The following table summarizes stock option activity for the three months ended March 31, 2015 (share amounts in thousands):

	Number of Shares			Weighted Average Exercise Price
Options outstanding, beginning of period		2,649		$	32.33
Granted		363			42.80
Canceled/Expired		(16	)		45.72
Exercised		(1	)		25.43
Options outstanding, end of period		2,995			33.53

Fully Vested Stock Options and Stock Options Expected to Vest

A summary of stock options outstanding as of March 31, 2015, is as follows:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Terms		Aggregate Intrinsic Value
	(In thousands)				(In years)		(In thousands)
Outstanding		2,995	$	33.53		8.11	$	28,595
Vested and expected to vest		2,887		33.28		8.07		28,242
Exercisable		1,659		30.80		7.68		19,997

Nonvested Share-Awards Activity

A summary of nonvested share-awards activity is as follows (share amounts in thousands):

	Shares			Weighted Average Grant Date Fair Value
Nonvested at beginning of period		343		$	27.99
Awarded		81			37.22
Released		(29	)		34.78
Forfeited		(11	)		24.14
Nonvested at end of period		384			29.57

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Fully Vested Stock Options and Stock Options Expected to Vest (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Number of Shares
Outstanding	2,995	2,649
Vested and expected to vest	2,887
Exercisable	1,659
Weighted Average Exercise Price
Outstanding	$ 33.53	$ 32.33
Vested and expected to vest	$ 33.28
Exercisable	$ 30.80
Weighted Average Remaining Contractual Term (In years)
Outstanding	8 years 1 month 10 days
Vested and expected to vest	8 years 26 days
Exercisable	7 years 8 months 5 days
Aggregate Intrinsic Values
Outstanding	$ 28,595
Vested and expected to vest	28,242
Exercisable	$ 19,997

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Stockholders' Equity

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Stockholders' Equity

(16) Stockholders’ Equity

Dividends

On January 21, 2015, the board of directors authorized and declared a cash dividend to all the Company’s common stockholders of $0.187 per share of common stock, paid on March 19, 2015 to stockholders of record as of the close of business on March 5, 2015. Each future quarterly dividend payment is subject to review and approval by the Board. In addition, the Company’s Credit Agreement contains restrictions on the declaration and payment of dividends.

Treasury stock

On November 6, 2013, the Board approved a share repurchase program authorizing up to $125.0 million of the Company’s outstanding shares of common stock to be repurchased. The shares may be repurchased from time to time in the open market or in privately negotiated transactions. The share repurchases are subject to prevailing market conditions and other considerations. The share repurchase program does not have an expiration date and may be suspended or terminated at any time by the Board. All shares repurchased are held in treasury.

During the three months ended March 31, 2015, the Company purchased approximately 387,000 shares of its common stock at a cost of $15.0 million under the authorized share repurchase program, and approximately $85.0 million is available for repurchase as of March 31, 2015. In addition, the Company withheld approximately 7,000 shares of stock from employees, for an approximate value of $276,000, upon vesting of share awards to satisfy minimum tax withholding obligations. These shares were not acquired pursuant to the share repurchase program.

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Restructuring Costs (Tables)

3 Months Ended

Mar. 31, 2015

Restructuring and Related Activities [Abstract]

Accrued Restructuring Obligations and Related Activity

The following table details accrued restructuring obligations (included in accrued liabilities in the Consolidated Balance Sheets) and related activity for the year ended December 31, 2014 and the three-month period ended March 31, 2015.

	Severance and Benefits			Lease Abandonment Costs			Other Costs			Total
	(In thousands)
Accrued obligations as of January 1, 2014	$	613		$	1,063		$	—		$	1,676
Restructuring expense		1,826			318			1,398			3,542
Settlement of obligations		(1,998	)		(705	)		(1,398	)		(4,101	)
Accrued obligations as of December 31, 2014		441			676			—			1,117
Restructuring expense		464			19			—			483
Settlement of obligations		(157	)		(61	)		—			(218	)
Accrued obligations as of March 31, 2015	$	748		$	634		$	—		$	1,382

Restructuring Expense

The following amounts are included in restructuring expense for the periods indicated:

	Three Months Ended March 31,
	2015		2014
	(In thousands)
Severance and benefits	$	464	$	340
Lease abandonment costs		19		139
Other costs (1)		—		106
Restructuring expenses	$	483	$	585

(1) Other costs for 2014 include the sale of the Company’s Belfast, Northern Ireland location.

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Subsequent Events

3 Months Ended

Mar. 31, 2015

Subsequent Events [Abstract]

Subsequent Events

(18) Subsequent Events

Divestiture of North American wood mobile office fleet

On April 16, 2015 the Company entered into a definitive agreement to sell its wood mobile offices within its North American Portable Storage segment for a cash price of $92.0 million. See Note 5 for information regarding the $64.7 million impairment related to these assets recorded during the quarter ended March 31, 2015. The transaction is expected to be completed in May 2015, at which time the Company expects to recognize approximately $2 million of divestiture-related expenses. Cash received will be net of approximately $6.6 million of deferred revenue related to these products.

Increase to treasury stock repurchase program.

On April 17, 2015, Mobile Mini’s Board approved a $50 million increase in the current share repurchase program to $175 million. Through April 30, 2015, the Company has repurchased $40.0 million of shares under this program and approximately $135.0 million is available for repurchase as of April 30, 2015.

Declaration of quarterly dividend

On April 29, 2015, the Company’s Board authorized and declared a quarterly dividend to all the Company’s common stockholders of $0.187 per share of common stock, payable on June 3, 2015 to all stockholders of record as of the close of business on May 20, 2015.

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Restructuring Expenses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 483	$ 585		$ 3,542
Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	464	340		1,826
Lease Abandonment Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	19	139		318
Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		$ 106	[1]	$ 1,398

[1] Other costs for 2014 include the sale of the Company's Belfast, Northern Ireland location.

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Mobile Mini, Organization and Description of Business

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Mobile Mini, Organization and Description of Business

(1) Mobile Mini, Organization and Description of Business

Mobile Mini, Inc., a Delaware corporation, is a leading provider of portable storage and specialty containment solutions. In these notes, the terms “Mobile Mini” and the “Company” refer to Mobile Mini, Inc. In December 2014, the Company acquired Gulf Tanks Holdings, Inc. (“GTH”), the parent company of Houston, Texas-based Evergreen Tank Solutions (“ETS”). The transaction, referred to as the “ETS Acquisition,” closed on December 10, 2014.

At March 31, 2015, Mobile Mini has a fleet of portable storage units operating throughout the U.S., Canada and the U.K. The Company has a diversified customer base for its portable storage products, including large and small retailers, construction companies, medical centers, schools, utilities, distributors, the military, hotels, restaurants, entertainment complexes and households. These customers use the products for a wide variety of applications, including the storage of retail and manufacturing inventory, construction materials and equipment, and documents and records. The ETS Acquisition resulted in a fleet of specialty containment products, including liquid and solid containment units, serving a specialty sector in the industry. Specialty products are rented primarily to chemical, refinery, oil and natural gas drilling, mining and environmental service customers. The operating results of ETS are included in the three month period ended March 31, 2015.

Basis of Presentation and Consolidation

The consolidated financial statements include the accounts of Mobile Mini and its wholly owned subsidiaries. The Company does not have any subsidiaries in which it does not own 100% of the outstanding stock. All significant intercompany balances and transactions have been eliminated. The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applicable to interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management of Mobile Mini, Inc., all adjustments (which include normal recurring adjustments) necessary to present fairly the financial position, results of operations, and cash flows for all periods presented have been made. The results of operations for the three months ended March 31, 2015 and 2014 are not necessarily indicative of the results to be expected for the full year.

These condensed consolidated financial statements should be read in conjunction with the Company’s December 31, 2014 audited consolidated financial statements and accompanying notes thereto, which are included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on February 27, 2015.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and the notes to those statements. Actual results could differ from those estimates. The most significant estimates included within the financial statements are the allowance for doubtful accounts, the estimated useful lives and residual values on the rental fleet, property, plant and equipment, goodwill and other asset impairments and certain accrued liabilities.

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 3,307	$ 2,442
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	20,000	20,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	95,000	95,000
Common stock, issued	49,087	49,015
Common stock, outstanding	45,835	46,157
Treasury stock, shares	3,252	2,858

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Lines of Credit

3 Months Ended

Mar. 31, 2015

Text Block [Abstract]

Lines of Credit

(11) Lines of Credit

The Company has a $1.0 billion ABL Credit Agreement with Deutsche Bank AG New York Branch and other lenders party thereto (the “Credit Agreement”). The Credit Agreement provides for a five-year, revolving credit facility and all amounts outstanding under the Credit Agreement are due on February 22, 2017. The obligations of Mobile Mini and its subsidiary guarantors under the Credit Agreement are secured by a blanket lien on substantially all of its assets.

Amounts borrowed under the Credit Agreement and repaid or prepaid during the term may be reborrowed. Outstanding amounts under the Credit Agreement bear interest at the Company’s option at either: (i) LIBOR plus a defined margin, or (ii) the Agent bank’s prime rate plus a margin. The applicable margin for each type of loan is based on an availability-based pricing grid and ranges from 1.75% to 2.25% for LIBOR loans and 0.75% to 1.25% for base rate loans at each measurement date. As of March 31, 2015, the applicable margins are 2.00% for LIBOR loans and 1.00% for base rate loans.

Availability of borrowings under the Credit Agreement is subject to a borrowing base calculation based upon a valuation of the Company’s eligible accounts receivable, eligible container fleet (including containers held for sale, work-in-process and raw materials) and machinery and equipment, each multiplied by an applicable advance rate or limit. The rental fleet is appraised at least once annually by a third-party appraisal firm and up to 90% of the net orderly liquidation value, as defined in the Credit Agreement, is included in the borrowing base to determine how much the Company may borrow under the Credit Agreement.

The Credit Agreement provides for U.K. borrowings, which are, at the Company’s option, denominated in either Pounds Sterling or Euros, by its U.K. subsidiary based upon a U.K. borrowing base; Canadian borrowings, which are denominated in Canadian dollars, by its Canadian subsidiary based upon a Canadian borrowing base; and U.S. borrowings, which are denominated in U.S. dollars, by the Company based upon a U.S. borrowing base along with any Canadian assets not included in the Canadian subsidiary.

The Credit Agreement also contains customary negative covenants, including covenants that restrict the Company’s ability to, among other things: (i) allow certain liens to attach to the Company or its subsidiary assets; (ii) repurchase or pay dividends or make certain other restricted payments on capital stock and certain other securities, prepay certain indebtedness or make acquisitions or other investments subject to Payment Conditions (as defined in the Credit Agreement); and (iii) incur additional indebtedness or engage in certain other types of financing transactions. Payment Conditions allow restricted payments and acquisitions to occur without financial covenants as long as the Company has $250.0 million of pro forma excess borrowing availability under the Credit Agreement. The Company must also comply with specified financial maintenance covenants and affirmative covenants only if the Company falls below $100.0 million of borrowing availability levels with set permitted values for the Debt Ratio and Fixed Charge Coverage Ratio (as defined in the Credit Agreement). The Company was in compliance with the terms of the Credit Agreement as of March 31, 2015, and was above the minimum borrowing availability threshold and therefore not subject to any financial maintenance covenants.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 24, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	MINI
Entity Registrant Name	MOBILE MINI INC
Entity Central Index Key	0000911109
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		45,832,303

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Income Taxes

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

Income Taxes

(12) Income Taxes

The Company files U.S. Federal tax returns, U.S. state tax returns and foreign tax returns. The Company has identified its U.S. Federal tax return as its “major” tax jurisdiction. For the U.S. Federal return, its tax years for 2011, 2012 and 2013 are subject to tax examination by the U.S. Internal Revenue Service through September 15, 2015, 2016 and 2017, respectively. The Company does not anticipate that the total amount of unrecognized tax benefit related to any particular tax position will change significantly within the next 12 months.

The Company uses a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement.

The Company’s policy for recording interest and penalties associated with audits is to record such items as a component of income before taxes. Penalties and associated interest costs, if any, are recorded in rental, selling and general expenses in its Condensed Consolidated Statements of Operations.

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Rental	$ 121,028	$ 94,080
Sales	6,724	7,866
Other	4,877	458
Total revenues	132,629	102,404
Costs and expenses:
Rental, selling and general expenses	83,982	68,356
Cost of sales	4,197	5,553
Restructuring expenses	483	585
Asset impairment charge, net	64,726	283
Depreciation and amortization	15,539	9,145
Total costs and expenses	168,927	83,922
(Loss) income from operations	(36,298)	18,482
Other expense:
Interest expense	(9,059)	(6,987)
Foreign currency exchange		(1)
(Loss) income before income tax (benefit) provision	(45,357)	11,494
Income tax (benefit) provision	(18,031)	4,054
Net (loss) income	$ (27,326)	$ 7,440
(Loss) earnings per share:
Basic	$ (0.60)	$ 0.16
Diluted	$ (0.60)	$ 0.16
Weighted average number of common and common share equivalents outstanding:
Basic	45,484	46,148
Diluted	45,484	46,837
Cash dividends declared per share	$ 0.19	$ 0.17

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Acquisition

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Acquisition

(6) Acquisition

In the three months ended March 31, 2015, Mobile Mini completed one acquisition of a portable storage business. This acquisition expanded the Company’s existing operations in the Glasgow, Scotland market. The accompanying consolidated financial statements include the operations of the acquired business from the date of acquisition. The aggregate purchase price for the assets acquired were recorded based on their estimated fair values at the date of the acquisition. The Company has not disclosed the pro-forma impact of the acquisition on operations as it was immaterial to the Company’s financial position in the aggregate.

The components of the purchase price and net assets acquired during the three months ended March 31, 2015 are as follows (in thousands):

Net Assets Acquired:
Rental fleet	$	991
Intangible assets:
Customer relationships		57
Non-compete agreements		24
Goodwill		128
Total purchase price	$	1,200

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Impairment of North American Wood Mobile Offices

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Impairment of North American Wood Mobile Offices

(5) Impairment of North American Wood Mobile Offices

Mobile Mini’s business strategy is to invest in high return, low maintenance, long-lived assets. Wood mobile offices require more maintenance and upkeep than Mobile Mini’s stainless steel ground level offices and containers, resulting in lower margins as compared to other portable storage products, as well as the newly-acquired specialty containment products. During March 2015, the Company entered into discussions regarding the possible sale of Mobile Mini’s wood mobile offices within its North American Portable Storage segment. The discussions indicated that the fleet might be sold at an amount below carrying value. (See additional discussion regarding the divestiture of the wood mobile offices in Note 18.)

Mobile Mini reviews long-lived assets such as rental fleet, property, plant and equipment, and intangibles, for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may be impaired. Based upon the events described above, the Company conducted a review for impairment for these particular long-lived assets as of March 31, 2015. The review included assumptions of cash flows considering the likelihood of possible outcomes that existed as of the date of the review, including assigning probabilities to the outcomes. Management estimated fair market value for the wood mobile offices based upon purchase price discussions. Based on this review, management determined that the assets were impaired as of March 31, 2015 and an impairment loss, was recognized in the amount by which the carrying amount of the asset group exceeded the estimated fair value as follows:

	March 31, 2015
	(In thousands)
Estimated fair market value	$	92,000
Net book value:
Wood mobile offices in rental fleet		155,558
Ancillary items in property, plant and equipment		1,168
Impairment loss	$	(64,726	)

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Segment Reporting

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Segment Reporting

(17) Segment Reporting

Prior to the ETS Acquisition, the Company’s operations were comprised of two reportable segments: North America and the U.K., both of which offer portable storage solutions. Discrete financial data on each of the Company’s products is not available and it would be impractical to collect and maintain financial data in such a manner. As a result of the ETS Acquisition, the Company established a new specialty containment reporting segment. Operations related to ETS are included in Mobile Mini’s consolidated results for the three months ended March 31, 2015.

The results for each segment are reviewed discretely by senior management. Within their segment, locations generally have similar economic characteristics covering all products rented or sold, including customer base, sales personnel, advertising, yard facilities, general and administrative costs and field operations management.

All of the Company’s locations operate in their local currency and, although the Company is exposed to foreign exchange rate fluctuation in foreign markets where the Company rents and sells its products, the Company does not believe such exposure will have a significant impact on its results of operations.

The following tables set forth certain information regarding each of the Company’s segments for the three month periods ended March 31, 2015 and 2014.

	For the Three Months Ended March 31, 2015
	Portable Storage
	North America			United Kingdom		Total			Specialty Containment		Consolidated
	(In thousands)
Revenues:
Rental	$	78,984		$	20,020	$	99,004		$	22,024	$	121,028
Sales		4,983			979		5,962			762		6,724
Other		1,439			90		1,529			3,348		4,877
Total revenues		85,406			21,089		106,495			26,134		132,629
Costs and expenses:
Rental, selling and general expenses		53,580			13,652		67,232			16,750		83,982
Cost of sales		3,122			742		3,864			333		4,197
Restructuring expenses		217			—		217			266		483
Asset impairment charge, net		64,726			—		64,726			—		64,726
Depreciation and amortization		7,890			1,576		9,466			6,073		15,539
Total costs and expenses		129,535			15,970		145,505			23,422		168,927
(Loss) income from operations	$	(44,129	)	$	5,119	$	(39,010	)	$	2,712	$	(36,298	)
Interest expense, net of interest income	$	6,149		$	218	$	6,367		$	2,692	$	9,059
Income tax (benefit) provision		(18,998	)		959		(18,039	)		8		(18,031	)

	For the Three Months Ended March 31, 2014
	Portable Storage
	North America		United Kingdom		Total		Specialty Containment		Consolidated
	(In thousands)
Revenues:
Rental	$	75,483	$	18,597	$	94,080	$	—	$	94,080
Sales		6,578		1,288		7,866		—		7,866
Other		354		104		458		—		458
Total revenues		82,415		19,989		102,404		—		102,404
Costs and expenses:
Rental, selling and general expenses		54,707		13,649		68,356		—		68,356
Cost of sales		4,590		963		5,553		—		5,553
Restructuring expenses		397		188		585		—		585
Asset impairment charge, net		159		124		283		—		283
Depreciation and amortization		7,418		1,727		9,145		—		9,145
Total costs and expenses		67,271		16,651		83,922		—		83,922
Income from operations	$	15,144	$	3,338	$	18,482	$	—	$	18,482
Interest expense, net of interest income	$	6,717	$	270	$	6,987	$	—	$	6,987
Income tax provision		3,299		755		4,054		—		4,054

The previous schedules include revenues in the U.S. of $110.5 million and $81.1 million for the three month periods ended March 31, 2015 and 2014, respectively.

Assets related to the Company’s segments include the following:

	Portable Storage
	North America		United Kingdom		Total		Specialty Containment		Consolidated
	(In thousands)
As of March 31, 2015:
Goodwill	$	458,852	$	61,634	$	520,486	$	182,851	$	703,337
Intangibles		1,912		618		2,530		74,435		76,965
Rental Fleet		755,434		140,732		896,166		123,497		1,019,663
Property Plant and Equipment		87,153		15,511		102,664		14,071		116,735
As of December 31, 2014:
Goodwill	$	459,234	$	64,402	$	523,636	$	181,972	$	705,608
Intangibles		2,119		651		2,770		75,615		78,385
Rental Fleet		825,158		140,679		965,837		121,219		1,087,056
Property Plant and Equipment		82,514		16,488		99,002		14,173		113,175

The previous schedules include assets in the U.S. of $1.7 billion as of March 31, 2015 and December 31, 2014.

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Share-based Compensation

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-based Compensation

(13) Share-based Compensation

The Company has historically awarded stock options and nonvested share-awards for employees and non-employee directors as a means of attracting and retaining quality personnel and to align employee performance with stockholder value. Stock option plans are approved by the Company’s stockholders and administered by the compensation committee of the board of directors (“Board”). The current plan allows for a variety of equity programs designed to provide flexibility in implementing equity and cash awards, including incentive stock options, nonqualified stock options, nonvested share-awards, restricted stock units, stock appreciation rights, performance stock, performance units and other share-based awards. Participants may be granted any one of the equity awards or any combination. The Company does not award stock options with an exercise price below the market price of the underlying securities on the date of award. As of March 31, 2015, 2.5 million shares remain available for future grants. Generally stock options have contractual terms of ten years.

For both the quarters ended March 31, 2015 and 2014, all share-based compensation is included in rental, selling and general expenses. As of March 31, 2015, total unrecognized compensation cost related to stock option awards was approximately $10.1 million and the related weighted-average period over which it is expected to be recognized is approximately 1.7 years. As of March 31, 2015, the unrecognized compensation cost related to nonvested share-awards was approximately $9.9 million, which is expected to be recognized over a weighted-average period of approximately 2.6 years.

Stock options. The fair value of each stock option award is estimated on the date of the grant using the Black-Scholes option pricing model which requires the input of assumptions. Management estimates the risk-free interest rate based on the U.S. Treasury security rate in effect at the time of the grant. The expected life of the options, volatility and dividend rates are estimated based on the Company’s historical data. The following are the key assumptions used for options granted during the three month periods ended March 31:

	2015	2014
Risk-free interest rate	1.3% - 1.5%		1.5	%
Expected life of the options (years)	5		5
Expected stock price volatility	35.6% - 35.7%		38.4	%
Expected dividend rate	1.8% - 2.0%		1.6	%

The following table summarizes stock option activity for the three months ended March 31, 2015 (share amounts in thousands):

	Number of Shares			Weighted Average Exercise Price
Options outstanding, beginning of period		2,649		$	32.33
Granted		363			42.80
Canceled/Expired		(16	)		45.72
Exercised		(1	)		25.43
Options outstanding, end of period		2,995			33.53

A summary of stock options outstanding as of March 31, 2015, is as follows:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Terms		Aggregate Intrinsic Value
	(In thousands)				(In years)		(In thousands)
Outstanding		2,995	$	33.53		8.11	$	28,595
Vested and expected to vest		2,887		33.28		8.07		28,242
Exercisable		1,659		30.80		7.68		19,997

The aggregate intrinsic value of options exercised during the three months ended March 31, 2015, was approximately $23,000 and the weighted average fair value of stock options granted was $8.42.

Nonvested share-awards. The fair value of nonvested share-awards is estimated as the closing price of Mobile Mini’s common stock on the date of grant. A summary of nonvested share-awards activity is as follows (share amounts in thousands):

	Shares			Weighted Average Grant Date Fair Value
Nonvested at beginning of period		343		$	27.99
Awarded		81			37.22
Released		(29	)		34.78
Forfeited		(11	)		24.14
Nonvested at end of period		384			29.57

The total fair value of nonvested share-awards that vested during the three months ended March 31, 2015 was $1.0 million.

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Property, Plant and Equipment

3 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

(9) Property, Plant and Equipment

Property, plant and equipment are stated at cost, net of accumulated depreciation. Depreciation is provided using the straight-line method over the assets’ estimated useful lives. The Company’s depreciation expense related to property, plant and equipment for the three months ended March 31, 2015 and 2014 was $4.9 million and $3.5 million, respectively. Normal repairs and maintenance to property, plant and equipment are expensed as incurred. When property or equipment is retired or sold, the net book value of the asset, reduced by any proceeds, is charged to gain or loss on the disposal of property, plant and equipment and is included in rental, selling and general expenses in the Consolidated Statements of Operations. See Note 5 for information regarding the impairment of ancillary equipment related to wood mobile offices during the quarter ended March 31, 2015.

Property, plant and equipment at March 31, 2015 and December 31, 2014 consisted of the following:

	Residual Value as Percentage of Original Cost	Useful Life in Years	March 31, 2015			December 31, 2014
			(In thousands)
Land			$	10,848		$	10,920
Vehicles and machinery	0 - 55%	5 - 30		114,860			114,150
Buildings and improvements (1)	0 - 25	3 - 30		19,489			19,365
Office fixtures and equipment	0	3 - 5		35,198			33,942
Property, plant and equipment				180,395			178,377
Accumulated depreciation				(63,660	)		(65,202	)
Property, plant and equipment, net			$	116,735		$	113,175

(1) Improvements made to leased properties are amortized over the lesser of the estimated remaining life or the remaining term of the respective lease.

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Lines of Credit - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Line of Credit Facility [Line Items]
Line of credit, pro forma excess borrowing availability for restricted payments and acquisitions to occur without financial covenants	$ 250,000,000
Line of credit, minimum borrowing availability for financial maintenance covenants to be applicable	100,000,000
Line of credit, covenant	Payment Conditions allow restricted payments and acquisitions to occur without financial covenants as long as the Company has $250.0 million of pro forma excess borrowing availability under the Credit Agreement.
Maximum
Line of Credit Facility [Line Items]
Percentage of net orderly liquidation value of lease-fleet to be included in determination of borrowing base	90.00%
LIBOR Loans
Line of Credit Facility [Line Items]
Revolving credit facility, margin rate	2.00%
LIBOR Loans | Maximum
Line of Credit Facility [Line Items]
Revolving credit facility, margin rate	2.25%
LIBOR Loans | Minimum
Line of Credit Facility [Line Items]
Revolving credit facility, margin rate	1.75%
Base Rate Loans
Line of Credit Facility [Line Items]
Revolving credit facility, margin rate	1.00%
Base Rate Loans | Maximum
Line of Credit Facility [Line Items]
Revolving credit facility, margin rate	1.25%
Base Rate Loans | Minimum
Line of Credit Facility [Line Items]
Revolving credit facility, margin rate	0.75%
$1.0 billion ABL Credit Agreement
Line of Credit Facility [Line Items]
Credit Agreement, borrowing capacity	$ 1,000,000,000
Credit Agreement, term	5 years
Credit Agreement, maturity date	Feb. 22, 2017

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Inventories

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Inventories

(7) Inventories

Inventories are valued at the lower of cost (principally on a standard cost basis which approximates the first-in, first-out (“FIFO”) method) or market. Market is the lower of replacement cost or net realizable value.

Raw materials principally consist of raw steel, wood, glass, paint, vinyl and other assembly components used in manufacturing and remanufacturing processes, and to a lesser extent, parts used for internal maintenance, and ancillary items held for sale in our specialty containment segment. Work-in-process primarily represents partially assembled units pre-sold or for use as fleet. Finished portable storage units primarily represent purchased or assembled containers held in inventory until the container is either sold as is, remanufactured and sold, or remanufactured and deployed as rental fleet.

Inventories at March 31, 2015 and December 31, 2014 consisted of the following:

	March 31, 2015		December 31, 2014
	(In thousands)
Raw materials and supplies	$	14,569	$	14,241
Work-in-process		212		201
Finished portable storage units		1,737		2,294
Inventories	$	16,518	$	16,736

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Rental Fleet

3 Months Ended

Mar. 31, 2015

Text Block [Abstract]

Rental Fleet

(8) Rental Fleet

Rental fleet is capitalized at cost and depreciated over the estimated useful life of the unit using the straight-line method. Rental fleet is depreciated whether or not it is out on rent. Capitalized cost of rental fleet includes the price paid to acquire the unit and freight charges to the location when the unit is first placed in service, and when applicable, the cost of manufacturing or remanufacturing, which includes the cost of customizing units. Ordinary repair and maintenance costs are charged to operations as incurred.

Management periodically reviews depreciable lives and residual values against various factors, including the results of its lenders’ independent appraisal of rental fleet, practices of competitors in comparable industries, profit margins achieved on sales of depreciated units and rental rates obtained on older units. See Note 5 for information regarding the impairment of wood mobile offices during the quarter ended March 31, 2015.

Appraisals on our portable storage fleet are conducted on a regular basis by an independent appraiser selected by our lenders. Based on the values assigned in the most recent appraisal as of September 30, 2014, our portable storage rental fleet net liquidation value was approximately $1.0 billion as of March 31, 2015. In addition, an appraisal of our specialty product fleet was conducted as of December 2014 in conjunction with the ETS Acquisition. Based upon the values assigned in this appraisal, our specialty product rental fleet net liquidation value was approximately $90.7 million as of March 31, 2015. These appraisals were conducted by AccuVal Associates, Incorporated and are used to calculate our available borrowings under our Credit Agreement, as defined in Note 11.

The Company’s depreciation expense related to its rental fleet for the three months ended March 31, 2015 and 2014 was $9.2 million and $5.3 million, respectively. At March 31, 2015 and December 31, 2014, all of the Company’s rental fleet units were pledged as collateral under the Credit Agreement.

Rental fleet consisted of the following at March 31, 2015 and December 31, 2014:

	Residual Value as Percentage of Original Cost (1)			Useful Life in Years	March 31, 2015			December 31, 2014
					(In thousands)
Portable Storage:
Steel storage containers		55	%	30	$	602,360		$	604,547
Ground level offices		55	%	30		330,891			329,565
Wood mobile offices		50	%	20		143,894			208,529
Other						5,230			5,633
Total						1,082,375			1,148,274
Accumulated depreciation						(186,209	)		(182,437	)
Total portable storage fleet, net					$	896,166		$	965,837
Specialty Containment:
Steel tanks				25	$	52,031		$	50,843
Roll-off boxes				15 - 20		23,247			19,820
Stainless steel tank trailers				25		8,189			7,667
Vacuum boxes				20		23,287			23,283
De-watering boxes				20		4,271			3,898
Pumps and filtration equipment				7		11,655			11,510
Other						5,954			5,468
Total						128,634			122,489
Accumulated depreciation						(5,137	)		(1,270	)
Total specialty containment fleet, net					$	123,497		$	121,219
Total rental fleet, net					$	1,019,663		$	1,087,056

(1) Specialty containment fleet has been assigned zero residual value.

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Goodwill and Intangibles

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangibles

(10) Goodwill and Intangibles

For acquired businesses, the Company records assets acquired and liabilities assumed at their estimated fair values on the respective acquisition dates. Based on these values, the excess purchase prices over the fair value of the net assets acquired is recorded as goodwill. Estimated fair values of acquired assets is provisional and could change as additional information is received. During the current quarter, primarily due to further analysis of the assets acquired in the ETS acquisition, the associated goodwill was adjusted upward by $0.9 million.

The following table shows the activity and balances related to goodwill from January 1, 2015 to March 31, 2015:

	(In thousands)
Balance at January 1, 2015	$	705,608
Acquisition		128
Foreign currency		(3,318	)
Adjustments		919
Balance at March 31, 2015	$	703,337

Intangible assets are amortized over the estimated useful life of the asset utilizing a method which reflects the estimated pattern in which the economic benefits will be consumed. Customer relationships and certain trade names and trademarks, are amortized using an accelerated method while other intangibles are amortized using the straight-line method.

The following table reflects balances related to intangible assets for the periods presented:

		March 31, 2015							December 31, 2014
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
		(In thousands)
Customer relationships	11 - 20	$	91,642	$	(21,294	)	$	70,348	$	91,990	$	(20,484	)	$	71,506
Trade names/trademarks	1 - 5		6,027		(1,078	)		4,949		6,065		(919	)		5,146
Non-compete agreements	2 - 5		1,796		(167	)		1,629		1,772		(78	)		1,694
Other	1 - 19		60		(21	)		39		61		(22	)		39
Total		$	99,525	$	(22,560	)	$	76,965	$	99,888	$	(21,503	)	$	78,385

Amortization expense for amortizable intangibles was approximately $1.5 million and $0.3 million for the three-month periods ended March 31, 2015 and 2014, respectively. Based on the carrying value at March 31, 2015, future amortization of intangible assets is expected to be as follows for the years ended December 31 (in thousands):

2015 (remaining)	$	4,387
2016		5,931
2017		5,921
2018		5,973
2019		6,011
Thereafter		48,742
Total	$	76,965

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Stock Option Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Number of Shares
Options outstanding, beginning of period	2,649
Granted	363
Canceled/Expired	(16)
Exercised	(1)
Options outstanding, end of period	2,995
Weighted Average Exercise Price
Options outstanding, beginning of period	$ 32.33
Granted	$ 42.80
Canceled/Expired	$ 45.72
Exercised	$ 25.43
Options outstanding, end of period	$ 33.53

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Nonvested Share-Awards Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Nonvested Stock Awards, shares
Nonvested at beginning of period, shares	343
Awarded	81
Released	(29)
Forfeited	(11)
Nonvested at end of period, shares	384
Weighted Average Grant Date Fair Value
Nonvested at beginning of period	$ 27.99
Awarded	$ 37.22
Released	$ 34.78
Forfeited	$ 24.14
Nonvested at end of period	$ 29.57

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Key Assumptions Used to Estimate Fair Value of Stock Options Granted (Detail) (Stock options)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		1.50%
Expected life of the options (years)	5 years	5 years
Expected stock price volatility		38.40%
Expected dividend rate		1.60%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.30%
Expected stock price volatility	35.60%
Expected dividend rate	1.80%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.50%
Expected stock price volatility	35.70%
Expected dividend rate	2.00%

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Goodwill and Intangibles (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Activity and Balances Relating to Goodwill

The following table shows the activity and balances related to goodwill from January 1, 2015 to March 31, 2015:

	(In thousands)
Balance at January 1, 2015	$	705,608
Acquisition		128
Foreign currency		(3,318	)
Adjustments		919
Balance at March 31, 2015	$	703,337

Balances Related to Intangible Assets

The following table reflects balances related to intangible assets for the periods presented:

		March 31, 2015							December 31, 2014
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
		(In thousands)
Customer relationships	11 - 20	$	91,642	$	(21,294	)	$	70,348	$	91,990	$	(20,484	)	$	71,506
Trade names/trademarks	1 - 5		6,027		(1,078	)		4,949		6,065		(919	)		5,146
Non-compete agreements	2 - 5		1,796		(167	)		1,629		1,772		(78	)		1,694
Other	1 - 19		60		(21	)		39		61		(22	)		39
Total		$	99,525	$	(22,560	)	$	76,965	$	99,888	$	(21,503	)	$	78,385

Schedule of Expected Future Amortization of Intangible Assets

Based on the carrying value at March 31, 2015, future amortization of intangible assets is expected to be as follows for the years ended December 31 (in thousands):

2015 (remaining)	$	4,387
2016		5,931
2017		5,921
2018		5,973
2019		6,011
Thereafter		48,742
Total	$	76,965

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Rental Fleet - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, net	$ 1,019,663,000		$ 1,087,056,000
Depreciation expense	9,200,000	5,300,000
Portable Storage
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, net	896,166,000		965,837,000
Specialty Containment
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, net	$ 123,497,000		$ 121,219,000

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

(15) Commitments and Contingencies

Mobile Mini is a party to various claims and litigation in the normal course of business. Management’s current estimated range of liability related to various claims and pending litigation is based on claims for which management can determine that it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Because of the uncertainties related to both the probability of incurred and possible range of loss on pending claims and litigation, management must use considerable judgment in making a reasonable determination of the liability that could result from an unfavorable outcome. As additional information becomes available estimates will be revised as appropriate. Management does not anticipate the resolution of such matters known at this time will have a material adverse effect on our business or consolidated financial position.

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Mobile Mini, Organization and Description of Business (Policies)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Basis of Presentation and Consolidation

Basis of Presentation and Consolidation

The consolidated financial statements include the accounts of Mobile Mini and its wholly owned subsidiaries. The Company does not have any subsidiaries in which it does not own 100% of the outstanding stock. All significant intercompany balances and transactions have been eliminated. The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applicable to interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management of Mobile Mini, Inc., all adjustments (which include normal recurring adjustments) necessary to present fairly the financial position, results of operations, and cash flows for all periods presented have been made. The results of operations for the three months ended March 31, 2015 and 2014 are not necessarily indicative of the results to be expected for the full year.

These condensed consolidated financial statements should be read in conjunction with the Company’s December 31, 2014 audited consolidated financial statements and accompanying notes thereto, which are included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on February 27, 2015.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and the notes to those statements. Actual results could differ from those estimates. The most significant estimates included within the financial statements are the allowance for doubtful accounts, the estimated useful lives and residual values on the rental fleet, property, plant and equipment, goodwill and other asset impairments and certain accrued liabilities.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. In April 2014, the Financial Accounting Standards Board (“FASB”) issued the accounting guidance on reporting discontinued operations and disclosures of disposals of components of an entity. The new guidance raises the threshold for a disposal to qualify as a discontinued operation and requires new disclosures of both discontinued operations and certain other disposals that do not meet the definition of a discontinued operation. The guidance is effective for fiscal years beginning after December 15, 2014. The Company will apply this guidance prospectively to transactions occurring after December 31, 2014.

Revenue from Contracts with Customers. In May 2014, FASB issued the accounting standard on revenue from contracts with customers. The standard provides a single model for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The standard requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of goods or services. The standard is effective for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted. The revenue recognition standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the impact, if any, of the adoption of the standard to its financial statements and related disclosures. The Company has not yet selected a transition method nor determined the effect of the standard on its ongoing financial reporting.

Simplifying the Presentation of Debt Issuance Costs. In April 2015, FASB issued accounting guidance on the presentation of debt issuance costs in the balance sheet. This standard requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by this guidance. The Company will apply this guidance prospectively beginning in the fiscal year ended December 31, 2017. The application of this guidance will result in a reclassification of debt financing costs from other assets to a reduction of the specific debt liability, and will not affect the Company’s statement of operations or cash flow. As of March 31, 2015, the Company’s debt financing costs, net of accumulated amortization is $8.0 million.

Fair Value Measurements, Policy

The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the Company adopted the suggested accounting guidance for the three levels of inputs that may be used to measure fair value:     

Level 1 —	Observable inputs such as quoted prices in active markets for identical assets or liabilities;
Level 2 —	Observable inputs, other than Level 1 inputs in active markets, that are observable either directly or indirectly; and
Level 3 —	Unobservable inputs for which there is little or no market data, which require the reporting entity to develop its own assumptions.

Earnings Per Share

Basic (loss) earnings per share (“EPS”) is calculated by dividing net (loss) income by the weighted average number of common shares outstanding during the period. Diluted EPS is calculated under the treasury stock method. Potential common shares included nonvested share-awards, which is subject to risk of forfeiture, and incremental shares of common stock issuable upon the exercise of stock options.

Inventories

Inventories are valued at the lower of cost (principally on a standard cost basis which approximates the first-in, first-out (“FIFO”) method) or market. Market is the lower of replacement cost or net realizable value.

Raw materials principally consist of raw steel, wood, glass, paint, vinyl and other assembly components used in manufacturing and remanufacturing processes, and to a lesser extent, parts used for internal maintenance, and ancillary items held for sale in our specialty containment segment. Work-in-process primarily represents partially assembled units pre-sold or for use as fleet. Finished portable storage units primarily represent purchased or assembled containers held in inventory until the container is either sold as is, remanufactured and sold, or remanufactured and deployed as rental fleet.

Rental Fleet, Policy

Rental fleet is capitalized at cost and depreciated over the estimated useful life of the unit using the straight-line method. Rental fleet is depreciated whether or not it is out on rent. Capitalized cost of rental fleet includes the price paid to acquire the unit and freight charges to the location when the unit is first placed in service, and when applicable, the cost of manufacturing or remanufacturing, which includes the cost of customizing units. Ordinary repair and maintenance costs are charged to operations as incurred.

Management periodically reviews depreciable lives and residual values against various factors, including the results of its lenders’ independent appraisal of rental fleet, practices of competitors in comparable industries, profit margins achieved on sales of depreciated units and rental rates obtained on older units.

Property, Plant and Equipment

Property, plant and equipment are stated at cost, net of accumulated depreciation. Depreciation is provided using the straight-line method over the assets’ estimated useful lives. The Company’s depreciation expense related to property, plant and equipment for the three months ended March 31, 2015 and 2014 was $4.9 million and $3.5 million, respectively. Normal repairs and maintenance to property, plant and equipment are expensed as incurred. When property or equipment is retired or sold, the net book value of the asset, reduced by any proceeds, is charged to gain or loss on the disposal of property, plant and equipment and is included in rental, selling and general expenses in the Consolidated Statements of Operations. See Note 5 for information regarding the impairment of ancillary equipment related to wood mobile offices during the quarter ended March 31, 2015.

Income Tax Uncertainties, Policy

The Company uses a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement.

Segment Reporting, Policy

Prior to the ETS Acquisition, the Company’s operations were comprised of two reportable segments: North America and the U.K., both of which offer portable storage solutions. Discrete financial data on each of the Company’s products is not available and it would be impractical to collect and maintain financial data in such a manner. As a result of the ETS Acquisition, the Company established a new specialty containment reporting segment. Operations related to ETS are included in Mobile Mini’s consolidated results for the three months ended March 31, 2015.

The results for each segment are reviewed discretely by senior management. Within their segment, locations generally have similar economic characteristics covering all products rented or sold, including customer base, sales personnel, advertising, yard facilities, general and administrative costs and field operations management.

All of the Company’s locations operate in their local currency and, although the Company is exposed to foreign exchange rate fluctuation in foreign markets where the Company rents and sells its products, the Company does not believe such exposure will have a significant impact on its results of operations.

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Schedule of Components of Purchase Price and Net Assets Acquired (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Net Assets Acquired:
Rental fleet	$ 991
Intangible assets:
Goodwill	128
Total purchase price	1,200
Customer relationships
Intangible assets:
Intangible assets	57
Non-compete agreements
Intangible assets:
Intangible assets	$ 24

XML

Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes, face amount	$ 200.0
Debt instrument interest rate	7.875%
Debt instrument due year	2020
Senior Notes 7.875 Percent Due 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes fair value basis for measurement, description	The fair value of the Company's $200.0 million aggregate principal amount of 7.875% senior notes due 2020 (the "2020 Notes" or the "Senior Notes") is based on their latest sales price at the end of each period obtained from a third-party institution and is considered Level 2 in the fair value hierarchy, as there is not an active market for these notes.

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (27,326)	$ 7,440
Foreign currency translation adjustment	(11,777)	1,180
Comprehensive (loss) income	$ (39,103)	$ 8,620

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(Loss) Earnings Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

(Loss) Earnings Per Share

(4) (Loss) Earnings Per Share

Basic (loss) earnings per share (“EPS”) is calculated by dividing net (loss) income by the weighted average number of common shares outstanding during the period. Diluted EPS is calculated under the treasury stock method. Potential common shares included nonvested share-awards, which is subject to risk of forfeiture, and incremental shares of common stock issuable upon the exercise of stock options.

The following table is a reconciliation of net (loss) income and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted EPS for the three months ended March 31:

	Three Months Ended March 31,
	2015			2014
	(In thousands, except per share data)
Numerator:
Net (loss) income	$	(27,326	)	$	7,440
Basic EPS Denominator:
Common shares outstanding beginning of year		45,814			46,084
Weighted shares issued (repurchased) during the period		(330	)		64
Total weighted average shares outstanding		45,484			46,148
Diluted EPS Denominator:
Common shares outstanding beginning of year		45,814			46,084
Net weighted shares issued (repurchased) during the period		(330	)		64
Dilutive effect of stock options and nonvested share awards during the period (1)		—			689
Total weighted average shares outstanding		45,484			46,837
(Loss) earnings per share:
Basic	$	(0.60	)	$	0.16
Diluted		(0.60	)		0.16

(1) Common stock equivalents of approximately 570,000 were excluded from the calculation of diluted earnings per share for the quarter ending March 31, 2015 because their inclusion would reduce the net loss per share.

Basic weighted average number of common shares outstanding does not include nonvested share-awards of 0.4 million and 0.5 million shares as of March 31, 2015 and 2014, respectively.

The following table represents the number of stock options and nonvested share-awards that were issued or outstanding but excluded in calculating diluted EPS because their effect would have been anti-dilutive for the quarters ended March 31:

	Three Months Ended March 31,
	2015		2014
	(In thousands)
Stock options		1,108		641
Nonvested share-awards		—		—
Total		1,108		641

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Balances Related to Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	99,525	$ 99,888
Accumulated Amortization	(22,560)	(21,503)
Net Carrying Amount	76,965	78,385
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	91,642	91,990
Accumulated Amortization	(21,294)	(20,484)
Net Carrying Amount	70,348	71,506
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	11 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	20 years
Trade names/trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,027	6,065
Accumulated Amortization	(1,078)	(919)
Net Carrying Amount	4,949	5,146
Trade names/trademarks | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	1 year
Trade names/trademarks | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,796	1,772
Accumulated Amortization	(167)	(78)
Net Carrying Amount	1,629	1,694
Non-compete agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	2 years
Non-compete agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	60	61
Accumulated Amortization	(21)	(22)
Net Carrying Amount	39	$ 39
Other | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	1 year
Other | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	19 years

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Stockholders' Equity - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 21, 2015	Nov. 06, 2013
Equity, Class of Treasury Stock [Line Items]
Dividend payable			$ 0.187
Dividend declared date	Jan. 21, 2015
Dividend payable date	Mar. 19, 2015
Stockholder of record date	Mar. 05, 2015
Share repurchase program authorized amount				$ 125,000,000
Treasury stock value	15,284,000	407,000
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Treasury stock shares acquired	387,000
Treasury stock value	15,000,000
Treasury stock shares available for repurchase	85,000,000
Minimum tax withholding obligations
Equity, Class of Treasury Stock [Line Items]
Treasury stock shares acquired	7,000
Treasury stock value	$ 276,000

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Carrying and Fair Value of Senior Notes

The carrying value and the fair value of the Company’s Senior Notes are as follows:

	March 31, 2015		December 31, 2014
	(In thousands)
Carrying value	$	200,000	$	200,000
Fair value		211,000		206,000

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Condensed Consolidating Financial Information - Additional Information (Detail)	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Percentage of ownership owned	100.00%

XML

Condensed Consolidating Financial Information (Tables)

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Condensed Consolidating Balance Sheets

The following tables reflect the condensed consolidating financial information of the Company’s subsidiary guarantors of the Senior Notes and its non-guarantor subsidiaries. Separate financial statements of the subsidiary guarantors are not presented because the guarantee by each 100% owned subsidiary guarantor is full and unconditional, joint and several, subject to customary exceptions, and management has determined that such information is not material to investors.

MOBILE MINI, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

As of March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
ASSETS
Cash and cash equivalents	$	1,980		$	1,068		$	—		$	3,048
Receivables, net		60,310			18,694			—			79,004
Inventories		15,447			1,071			—			16,518
Rental fleet, net		868,049			151,614			—			1,019,663
Property, plant and equipment, net		100,180			16,555			—			116,735
Deposits and prepaid expenses		6,442			1,059			—			7,501
Deferred financing costs, net and other assets		8,173			—			—			8,173
Intangibles, net		76,259			706			—			76,965
Goodwill		636,863			66,474			—			703,337
Intercompany receivables		144,313			33,670			(177,983	)		—
Total assets	$	1,918,016		$	290,911		$	(177,983	)	$	2,030,944
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable	$	20,531		$	9,934		$	—		$	30,465
Accrued liabilities		57,658			6,932			—			64,590
Lines of credit		697,533			3,848			—			701,381
Obligations under capital leases		26,133			137			—			26,270
Senior Notes		200,000			—			—			200,000
Deferred income taxes		195,840			17,525			—			213,365
Intercompany payables		—			92			(92	)		—
Total liabilities		1,197,695			38,468			(92	)		1,236,071
Commitments and contingencies
Stockholders’ equity:
Common stock		491			18,388			(18,388	)		491
Additional paid-in capital		572,364			160,347			(160,347	)		572,364
Retained earnings		228,426			115,355			844			344,625
Accumulated other comprehensive loss		—			(41,647	)		—			(41,647	)
Treasury stock, at cost		(80,960	)		—			—			(80,960	)
Total stockholders’ equity		720,321			252,443			(177,891	)		794,873
Total liabilities and stockholders’ equity	$	1,918,016		$	290,911		$	(177,983	)	$	2,030,944

MOBILE MINI, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

As of December 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
ASSETS
Cash and cash equivalents	$	2,977		$	762		$	—		$	3,739
Receivables, net		62,033			18,998			—			81,031
Inventories		15,371			1,365			—			16,736
Rental fleet, net		934,433			152,623			—			1,087,056
Property, plant and equipment, net		95,509			17,666			—			113,175
Deposits and prepaid expenses		7,375			1,211			—			8,586
Deferred financing costs, net and other assets		8,858			—			—			8,858
Intangibles, net		77,629			756			—			78,385
Goodwill		635,943			69,665			—			705,608
Intercompany receivables		145,018			33,971			(178,989	)		—
Total assets	$	1,985,146		$	297,017		$	(178,989	)	$	2,103,174
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable	$	14,803		$	8,130		$	—		$	22,933
Accrued liabilities		56,104			7,623			—			63,727
Lines of credit		702,135			3,383			—			705,518
Obligations under capital leases		24,760			158			—			24,918
Senior Notes		200,000			—			—			200,000
Deferred income taxes		215,184			17,367			(1,004	)		231,547
Intercompany payables		—			94			(94	)		—
Total liabilities		1,212,986			36,755			(1,098	)		1,248,643
Commitments and contingencies
Stockholders’ equity:
Common stock		490			18,388			(18,388	)		490
Additional paid-in capital		569,083			160,347			(160,347	)		569,083
Retained earnings		268,263			111,397			844			380,504
Accumulated other comprehensive loss		—			(29,870	)		—			(29,870	)
Treasury stock, at cost		(65,676	)		—			—			(65,676	)
Total stockholders’ equity		772,160			260,262			(177,891	)		854,531
Total liabilities and stockholders’ equity	$	1,985,146		$	297,017		$	(178,989	)	$	2,103,174

Condensed Consolidating Statements of Operations

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Rental	$	100,018		$	21,010		$	—		$	121,028
Sales		5,669			1,055			—			6,724
Other		4,787			90			—			4,877
Total revenues		110,474			22,155			—			132,629
Costs and expenses:
Rental, selling and general expenses		69,610			14,372			—			83,982
Cost of sales		3,401			796			—			4,197
Restructuring expenses		483			—			—			483
Asset impairment charge		64,726			—			—			64,726
Depreciation and amortization		13,848			1,691			—			15,539
Total costs and expenses		152,068			16,859			—			168,927
(Loss) income from operations		(41,594	)		5,296			—			(36,298	)
Other income (expense):
Interest income		2,662			—			(2,662	)		—
Interest expense		(11,343	)		(378	)		2,662			(9,059	)
(Loss) income before income tax provision		(50,275	)		4,918			—			(45,357	)
Income tax (benefit) provision		(18,991	)		960			—			(18,031	)
Net (loss) income	$	(31,284	)	$	3,958		$	—		$	(27,326	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

Three Months Ended March 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Rental	$	74,268		$	19,812		$	—		$	94,080
Sales		6,527			1,339			—			7,866
Other		351			107			—			458
Total revenues		81,146			21,258			—			102,404
Costs and expenses:
Cost of sales		4,552			1,001			—			5,553
Rental, selling and general expenses		53,708			14,648			—			68,356
Restructuring expenses		397			188			—			585
Asset impairment charge, net		136			147			—			283
Depreciation and amortization		7,277			1,868			—			9,145
Total costs and expenses		66,070			17,852			—			83,922
Income from operations		15,076			3,406			—			18,482
Other income (expense):
Interest income		30			—			(30	)		—
Interest expense		(6,599	)		(418	)		30			(6,987	)
Foreign currency exchange		—			(1	)		—			(1	)
Income before income tax provision		8,507			2,987			—			11,494
Income tax provision		3,299			755			—			4,054
Net income	$	5,208		$	2,232		$	—		$	7,440

Condensed Consolidating Statements of Comprehensive (Loss) Income

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE (LOSS) INCOME

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations		Consolidated
Net (loss) income	$	(31,284	)	$	3,958		$	—	$	(27,326	)
Foreign currency translation adjustment		—			(11,777	)		—		(11,777	)
Comprehensive loss	$	(31,284	)	$	(7,819	)	$	—	$	(39,103	)

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

Three Months Ended March 31, 2014

(In thousands)

	Guarantors		Non- Guarantors		Eliminations		Consolidated
Net income	$	5,208	$	2,232	$	—	$	7,440
Foreign currency translation adjustment		—		1,180		—		1,180
Comprehensive income	$	5,208	$	3,412	$	—	$	8,620

Condensed Consolidating Statements of Cash Flows

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

Three Months Ended March 31, 2015

(In thousands)

	Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Net income	$	(31,284	)	$	3,958		$	—		$	(27,326	)
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge		64,726			—			—			64,726
Provision for doubtful accounts		947			222			—			1,169
Amortization of deferred financing costs		775			14			—			789
Amortization of long-term liabilities		25			—			—			25
Share-based compensation expense		3,160			90			—			3,250
Depreciation and amortization		13,848			1,691			—			15,539
Gain on sale of rental fleet units		(1,826	)		(146	)		—			(1,972	)
Loss on disposal of property, plant and equipment		219			116			—			335
Deferred income taxes		(19,192	)		959			—			(18,233	)
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables		188			(824	)		—			(636	)
Inventories		(75	)		232			—			157
Deposits and prepaid expenses		348			98			—			446
Other assets and intangibles		9			—			—			9
Accounts payable		751			282			—			1,033
Accrued liabilities		(467	)		(372	)		—			(839	)
Intercompany		683			(844	)		161			—
Net cash provided by operating activities		32,835			5,476			161			38,472
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired		—			(1,200	)		—			(1,200	)
Additions to rental fleet		(5,745	)		(4,735	)		—			(10,480	)
Proceeds from sale of rental fleet units		4,268			574			—			4,842
Additions to property, plant and equipment		(3,307	)		(934	)		—			(4,241	)
Proceeds from sale of property, plant and equipment		243			364			—			607
Net cash used in investing activities		(4,541	)		(5,931	)		—			(10,472	)
Cash Flows from Financing Activities:
Net borrowings (repayments) under lines of credit		(4,602	)		619			(154	)		(4,137	)
Deferred financing costs		(100	)		—			—			(100	)
Principal payments on capital lease obligations		(828	)		(14	)		(7	)		(849	)
Issuance of common stock		32			—			—			32
Dividend payments		(8,509	)		—			—			(8,509	)
Purchase of treasury stock		(15,284	)		—			—			(15,284	)
Net cash (used in) provided by financing activities		(29,291	)		605			(161	)		(28,847	)
Effect of exchange rate changes on cash		—			156			—			156
Net (decrease) increase in cash		(997	)		306			—			(691	)
Cash and cash equivalents at beginning of period		2,977			762			—			3,739
Cash and cash equivalents at end of period	$	1,980		$	1,068		$	—		$	3,048

MOBILE MINI, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

Three Months Ended March 31, 2014

(In thousands)

	Guarantors			Non- Guarantors			Eliminations		Consolidated
Cash Flows from Operating Activities:
Net income	$	5,208		$	2,232		$	—	$	7,440
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge, net		136			147			—		283
Provision for doubtful accounts		453			94			—		547
Amortization of deferred financing costs		687			16			—		703
Amortization of long-term liabilities		40			1			—		41
Share-based compensation expense		3,963			201			—		4,164
Depreciation and amortization		7,277			1,868			—		9,145
Gain on sale of rental fleet units		(1,500	)		(211	)		—		(1,711	)
Loss on disposal of property, plant and equipment		48			24			—		72
Deferred income taxes		3,201			753			—		3,954
Foreign currency loss		—			1			—		1
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables		1,404			(626	)		—		778
Inventories		285			(57	)		—		228
Deposits and prepaid expenses		(1,416	)		140			—		(1,276	)
Other assets and intangibles		(178	)		173			—		(5	)
Accounts payable		1,123			1,938			—		3,061
Accrued liabilities		(350	)		(263	)		—		(613	)
Intercompany		756			(756	)		—		—
Net cash provided by operating activities		21,137			5,675			—		26,812
Cash Flows from Investing Activities:
Cash paid for businesses, net of cash acquired		(4,217	)		—			—		(4,217	)
Additions to rental fleet		(1,834	)		(2,244	)		—		(4,078	)
Proceeds from sale of rental fleet units		4,781			846			—		5,627
Additions to property, plant and equipment		(2,393	)		(235	)		—		(2,628	)
Proceeds from sale of property, plant and equipment		708			200			—		908
Net cash used in investing activities		(2,955	)		(1,433	)		—		(4,388	)
Cash Flows from Financing Activities:
Net repayments under lines of credit		(10,773	)		(5,534	)		—		(16,307	)
Principal payments on capital lease obligations		(367	)		—			—		(367	)
Issuance of common stock		1,949			—			—		1,949
Dividend payments		(7,849	)		—			—		(7,849	)
Purchase of treasury stock		(407	)		—			—		(407	)
Net cash used in financing activities		(17,447	)		(5,534	)		—		(22,981	)
Effect of exchange rate changes on cash		—			(132	)		—		(132	)
Net increase (decrease) in cash		735			(1,424	)		—		(689	)
Cash and cash equivalents at beginning of period		(190	)		1,446			—		1,256
Cash and cash equivalents at end of period	$	545		$	22		$	—	$	567

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Restructuring Costs

3 Months Ended

Mar. 31, 2015

Restructuring and Related Activities [Abstract]

Restructuring Costs

(14) Restructuring Costs

The Company’s restructuring costs in the three month periods ended March 31, 2015 and 2014, include the following actions to align its business operations, some of which were begun in previous periods: the termination of the consumer initiative program in the third quarter of 2012, the sale of the Company’s Belfast, North Ireland location in the second quarter of 2014, the realignment of the Company’s corporate organization, field management and sales force structures in North America throughout 2014, and additional field restructuring in 2015 to facilitate the integration of ETS. The accrued restructuring obligations as of March 31, 2015 were related to the Company’s operations in North America.

The following table details accrued restructuring obligations (included in accrued liabilities in the Consolidated Balance Sheets) and related activity for the year ended December 31, 2014 and the three-month period ended March 31, 2015.

	Severance and Benefits			Lease Abandonment Costs			Other Costs			Total
	(In thousands)
Accrued obligations as of January 1, 2014	$	613		$	1,063		$	—		$	1,676
Restructuring expense		1,826			318			1,398			3,542
Settlement of obligations		(1,998	)		(705	)		(1,398	)		(4,101	)
Accrued obligations as of December 31, 2014		441			676			—			1,117
Restructuring expense		464			19			—			483
Settlement of obligations		(157	)		(61	)		—			(218	)
Accrued obligations as of March 31, 2015	$	748		$	634		$	—		$	1,382

The majority of accrued obligations are expected to be paid out through the year 2015, with the exception of a lease that will continue into the first quarter of 2019.

The following amounts are included in restructuring expense for the periods indicated:

	Three Months Ended March 31,
	2015		2014
	(In thousands)
Severance and benefits	$	464	$	340
Lease abandonment costs		19		139
Other costs (1)		—		106
Restructuring expenses	$	483	$	585

(1) Other costs for 2014 include the sale of the Company’s Belfast, Northern Ireland location.