Mobile Mini (MINI) 10-K 5 Feb 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2017	Jan. 26, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	MINI
Entity Registrant Name	MOBILE MINI INC
Entity Central Index Key	911,109
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		44,371,428
Entity Public Float			$ 1.3

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents		$ 13,451	$ 4,137
Receivables, net of allowance for doubtful accounts of $6,250 and $4,886 at December 31, 2017 and December 31, 2016, respectively		111,562	99,175
Inventories		15,671	15,412
Rental fleet, net		989,154	950,065
Property, plant and equipment, net		157,304	149,197
Other assets		15,334	14,930
Intangibles, net		62,024	68,420
Goodwill	[1]	708,907	703,558
Total assets		2,073,407	2,004,894
Liabilities:
Accounts payable		26,955	27,388
Accrued liabilities		78,084	64,126
Lines of credit		634,285	641,160
Obligations under capital leases		52,791	50,704
Senior notes, net of deferred financing costs of $4,150 and $4,788 at December 31, 2017 and December 31, 2016, respectively		245,850	245,212
Deferred income taxes		173,754	240,690
Total liabilities		1,211,719	1,269,280
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, 49,658 issued and 44,380 outstanding at December 31, 2017 and 49,292 issued and 44,295 outstanding at December 31, 2016		497	493
Additional paid-in capital		605,369	592,071
Retained earnings		463,322	362,896
Accumulated other comprehensive loss		(60,334)	(81,047)
Treasury stock, at cost, 5,278 and 4,997 shares at December 31, 2017 and December 31, 2016, respectively		(147,166)	(138,799)
Total stockholders' equity		861,688	735,614
Total liabilities and stockholders' equity		$ 2,073,407	$ 2,004,894
[1]	Includes accumulated amortization of $2.0 million and accumulated impairment of $12.5 million.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Receivables, allowance for doubtful accounts	$ 6,250	$ 4,886
Deferred financing costs	$ 8,354
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	95,000,000	95,000,000
Common stock, issued	49,658,000	49,292,000
Common stock, outstanding	44,380,000	44,295,000
Treasury stock, shares	5,278,000	4,997,000
Senior Notes
Deferred financing costs	$ 4,150	$ 4,788

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
Rental	$ 138,537	$ 127,695	$ 117,851	$ 114,742	$ 124,170	$ 121,784	$ 116,773	$ 117,356		$ 498,825	$ 480,083	$ 494,715
Sales										32,440	26,499	29,953
Other										2,284	2,040	6,109
Total revenues	146,696	136,636	126,690	123,527	130,387	128,853	124,849	124,533		533,549	508,622	530,777
Costs and expenses:
Rental, selling and general expenses										336,438	309,294	326,252
Cost of sales										21,001	16,471	19,671
Restructuring expenses									$ 13,700	2,886	6,020	20,798
Asset impairment charge and loss on divestiture, net												66,128
Depreciation and amortization										63,372	63,734	60,344
Total costs and expenses										423,697	395,519	493,193
Income from operations	36,995	26,812	22,152	23,893	34,700	26,667	25,541	26,195		109,852	113,103	37,584
Other income (expense):
Interest income										25	2	1
Interest expense										(35,728)	(32,726)	(35,900)
Debt extinguishment expense											(9,192)
Deferred financing costs write-off											(2,271)	(931)
Foreign currency exchange										(25)	(18)	(2)
Income from operations before income tax (benefit) provision										74,124	68,898	752
Income tax (benefit) provision										(48,104)	21,650	(4,822)
Net income	$ 92,071	$ 11,228	$ 8,777	$ 10,152	$ 19,469	$ 12,709	$ 4,072	$ 10,998		$ 122,228	$ 47,248	$ 5,574
Earnings per share:
Basic	$ 2.09	$ 0.25	$ 0.20	$ 0.23	$ 0.44	$ 0.29	$ 0.09	$ 0.25		$ 2.77	$ 1.07	$ 0.12
Diluted	$ 2.07	$ 0.25	$ 0.20	$ 0.23	$ 0.44	$ 0.29	$ 0.09	$ 0.25		$ 2.76	$ 1.06	$ 0.12
Weighted average number of common and common share equivalents outstanding
Basic										44,055	44,145	44,953
Diluted										44,254	44,390	45,460
Cash dividends declared per share										$ 0.91	$ 0.82	$ 0.75

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 92,071	$ 11,228	$ 8,777	$ 10,152	$ 19,469	$ 12,709	$ 4,072	$ 10,998	$ 122,228	$ 47,248	$ 5,574
Other comprehensive income (loss):
Foreign currency translation adjustment, net of income tax provision (benefit) of $30, $106 and ($184) in 2017, 2016 and 2015, respectively									20,713	(36,885)	(14,292)
Other comprehensive income (loss)									20,713	(36,885)	(14,292)
Comprehensive income (loss)									$ 142,941	$ 10,363	$ (8,718)

CONSOLIDATED STATEMENTS OF COM6

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Foreign currency translation adjustment, income tax provision (benefit)	$ 30	$ 106	$ (184)

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance at Dec. 31, 2014	$ 854,531	$ 490	$ 569,083	$ 380,504	$ (29,870)	$ (65,676)
Beginning Balance (Shares) at Dec. 31, 2014		46,157				2,858
Net income	5,574			5,574
Common stock dividends declared	(33,816)			(33,816)
Other comprehensive income (loss)	(14,292)				(14,292)
Exercise of stock options	$ 1,703		1,703
Exercise of stock options (Shares)	62	62
Tax shortfall on equity award transactions	$ (166)		(166)
Purchase of treasury stock	(61,833)					$ (61,833)
Purchase of treasury stock (Shares)		(1,693)				1,693
Restricted stock grants, net	1	$ 1
Restricted stock grants (Shares)		68
Share-based compensation	13,827		13,827
Ending Balance at Dec. 31, 2015	765,529	$ 491	584,447	352,262	(44,162)	$ (127,509)
Ending Balance (Shares) at Dec. 31, 2015		44,594				4,551
Net income	47,248			47,248
Common stock dividends declared	(36,614)			(36,614)
Other comprehensive income (loss)	(36,885)				(36,885)
Exercise of stock options	$ 468	$ 1	467
Exercise of stock options (Shares)	17	17
Tax shortfall on equity award transactions	$ (242)		(242)
Purchase of treasury stock	(11,290)					$ (11,290)
Purchase of treasury stock (Shares)		(446)				446
Restricted stock grants, net	1	$ 1
Restricted stock grants (Shares)		130
Share-based compensation	7,399		7,399
Ending Balance at Dec. 31, 2016	735,614	$ 493	592,071	362,896	(81,047)	$ (138,799)
Ending Balance (Shares) at Dec. 31, 2016		44,295				4,997
Net income	122,228			122,228
Common stock dividends declared	(40,214)			(40,214)
Other comprehensive income (loss)	20,713				20,713
Exercise of stock options	$ 5,800	$ 3	5,797
Exercise of stock options (Shares)	233	233
Purchase of treasury stock	$ (8,367)					$ (8,367)
Purchase of treasury stock (Shares)		(281)				281
Restricted stock grants, net		$ 1	(1)
Restricted stock grants (Shares)		133
Share-based compensation	7,373		7,373
Cumulative effect of adoption of accounting pronouncement	18,541		129	18,412
Ending Balance at Dec. 31, 2017	$ 861,688	$ 497	$ 605,369	$ 463,322	$ (60,334)	$ (147,166)
Ending Balance (Shares) at Dec. 31, 2017		44,380				5,278

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities:
Net income	$ 122,228	$ 47,248	$ 5,574
Adjustments to reconcile net income to net cash provided by operating activities:
Debt extinguishment expense		9,192
Deferred financing costs write-off		2,271	931
Asset impairment charge and loss on divestiture, net			66,128
Non-cash restructuring expense, excluding share-based compensation			12,411
Provision for doubtful accounts	5,037	6,162	3,705
Amortization of deferred financing costs	2,060	1,976	3,131
Amortization of long-term liabilities	130	116	101
Share-based compensation expense	7,373	7,399	13,827
Depreciation and amortization	63,372	63,734	60,344
Gain on sale of rental fleet	(5,657)	(5,472)	(6,402)
Loss on disposal of property, plant and equipment	517	1,285	2,188
Deferred income taxes	(49,980)	21,634	(5,629)
Tax shortfall on equity award transactions		(242)	(166)
Foreign currency transaction loss	25	18	2
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables	(15,677)	(27,321)	(4,184)
Inventories	(90)	598	945
Other assets	(635)	60	(855)
Accounts payable	(4,985)	239	4,605
Accrued liabilities	11,928	7,347	(3,842)
Net cash provided by operating activities	135,646	136,244	152,814
Cash Flows from Investing Activities:
Proceeds from wood mobile office divestiture, net			83,280
Cash paid for businesses acquired, net of cash acquired		(16,565)	(18,525)
Additions to rental fleet, excluding acquisitions	(63,688)	(57,372)	(74,732)
Proceeds from sale of rental fleet	12,953	13,679	16,865
Additions to property, plant and equipment, excluding acquisitions	(20,122)	(30,659)	(31,163)
Proceeds from sale of property, plant and equipment	851	2,764	9,860
Net cash used in investing activities	(70,006)	(88,153)	(14,415)
Cash Flows from Financing Activities:
Net repayments under lines of credit	(6,875)	(26,548)	(37,810)
Proceeds from issuance of 5.875% senior notes due 2024		250,000
Redemption of 7.875% senior notes due 2020		(200,000)
Debt extinguishment expense		(9,192)
Deferred financing costs	(12)	(5,369)	(4,683)
Principal payments on capital lease obligations	(7,418)	(6,520)	(4,253)
Issuance of common stock	5,800	468	1,703
Dividend payments	(40,171)	(36,402)	(33,700)
Purchase of treasury stock	(8,367)	(11,290)	(61,833)
Net cash used in financing activities	(57,043)	(44,853)	(140,576)
Effect of exchange rate changes on cash	717	(714)	51
Net increase (decrease) in cash	9,314	2,524	(2,126)
Cash and cash equivalents at beginning of year	4,137	1,613	3,739
Cash and cash equivalents at end of year	13,451	4,137	1,613
Supplemental Disclosure of Cash Flow Information:
Cash paid during the year for interest	35,029	21,546	32,372
Cash paid during the year for income and franchise taxes	2,607	1,772	4,935
Equipment and other acquired through capital lease obligations	9,501	18,951	17,638
Capital expenditures accrued or payable	$ 7,270	$ 3,230	$ 4,210

CONSOLIDATED STATEMENTS OF CAS9

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017	May 09, 2016
Senior Notes 5.875 Percent Due 2024
Debt instrument interest rate	5.875%	5.875%
Debt instrument due year	2,024
Senior Notes 7.875 Percent Due 2020
Debt instrument interest rate	7.875%		7.875%
Debt instrument due year	2,020

Mobile Mini, Organization and D

Mobile Mini, Organization and Description of Business	12 Months Ended
	Dec. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [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,” the “Company,” “we,” “us,” and “our” refer to Mobile Mini, Inc. At December 31, 2017, we have a fleet of portable storage and office units operating throughout the U.S., Canada and the U.K. serving a diversified customer base, including construction companies, large and small retailers, medical centers, schools, utilities, distributors, the military, hotels, restaurants, entertainment complexes and households. These customers use our products for a wide variety of applications, including the storage of construction materials and equipment, retail and manufacturing inventory, documents and records and other goods. We also have a fleet of specialty containment products, concentrated in the Gulf Coast region of the U.S., including liquid and solid containment units, serving a specialty sector in the industry. Specialty products are leased primarily to chemical, refinery, oil and natural gas drilling, mining and environmental service customers. Basis of Presentation and Consolidation The consolidated financial statements include the accounts of Mobile Mini and our wholly owned subsidiaries. We do not have any subsidiaries in which we do not own 100% of the outstanding stock. All significant intercompany balances and transactions have been eliminated. Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“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. Significant estimates affect the calculation of depreciation and amortization, the calculation of the allowance for doubtful accounts, the analysis of goodwill and long-lived assets for potential impairment and certain accrued liabilities.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	(2) Summary of Significant Accounting Policies Cash Equivalents We consider all highly liquid instruments with insignificant interest rate risk and with maturities of three months or less at purchase to be cash equivalents. Receivables and Allowance for Doubtful Accounts Receivables are stated net of an allowance for doubtful accounts. We estimate the amount of customer receivables that are uncollectible and record an estimated provision for bad debts through a charge to operations. The provision is based on historical collection experience and evaluation of past-due accounts. Specific accounts are written off against the allowance when management determines the account is uncollectible. We require a security deposit on most leased office units to cover the cost of damages or unpaid balances, if any. Our provision for doubtful accounts was less than 1.5% of total revenues in the years ended December 31, 2017, 2016 and 2015. The information presented in the table below reflects the activity in the allowance for doubtful accounts during the periods presented. For the Years Ended December 31, 2017 2016 2015 (In thousands) Balance at beginning of year $ 4,886 $ 2,162 $ 1,636 Provision charged to expense 5,037 6,162 3,705 Write-offs and other (3,673 ) (3,438 ) (3,179 ) Balance at end of year $ 6,250 $ 4,886 $ 2,162 Concentration of Credit Risk Financial instruments which potentially expose us to concentrations of credit risk consist primarily of receivables. Concentration of credit risk with respect to receivables is limited due to our large number of customers spread over a broad geographic area in many industry sectors. We typically have the right to repossess rented portable storage units, including any customer goods contained in the unit, following non-payment of rent. Receivables related to sold units are generally secured by the product sold to the customer. Our largest customer accounted for approximately 4.5% of our consolidated rental revenue for the year ended December 31, 2017, and 16.7% of our total receivables at December 31, 2017. These receivables generally fluctuate throughout the year depending upon seasonal demand but are typically higher at year end following the seasonal holiday business. Inventories Inventories are valued at the lower of cost (principally on a standard cost basis which approximates the first-in, first-out method) or net realizable value. Raw materials and supplies principally consist of raw steel, 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 Tank & Pump Solutions segment. Work-in-process primarily represents partially assembled units. Finished 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 December 31 consisted of the following: 2017 2016 (In thousands) Raw materials and supplies $ 11,732 $ 12,908 Work-in-process 50 31 Finished units 3,889 2,473 Inventories $ 15,671 $ 15,412 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. We periodically review depreciable lives and residual values against various factors, including the results of our lenders’ independent appraisal of our rental fleet, practices of our competitors in comparable industries and profit margins achieved on sales of depreciated units. Property, Plant and Equipment Property, plant and equipment are stated at cost, net of accumulated depreciation and amortization. Depreciation is recorded using the straight-line method over the assets’ estimated useful lives. Our depreciation expense related to property, plant and equipment for 2017, 2016 and 2015 was $25.9 million, $25.1 million and $20.2 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 Income. Property, plant and equipment at December 31 consisted of the following: Residual Value as Percentage of Original Cost Useful Life in Years 2017 2016 (In thousands) Land $ 2,970 $ 3,789 Vehicles and machinery 0 - 55% 5 - 30 151,937 131,584 Buildings and improvements (1) 0 - 25 3 - 30 25,079 22,750 Furniture, office and computer equipment 0 3 - 10 73,416 63,969 Property, plant and equipment 253,402 222,092 Accumulated depreciation and amortization (96,098 ) (72,895 ) Property, plant and equipment, net $ 157,304 $ 149,197 (1) Improvements made to leased properties are depreciated over the lesser of the estimated useful life or the remaining term of the respective lease Capitalized Software Development Costs We capitalize qualifying computer software costs incurred during the application development stage for internally developed software. Additionally, we capitalize qualifying costs incurred for upgrades and enhancements that result in additional functionality to existing software. Costs related to preliminary project planning activities, post-implementation activities, maintenance and minor modifications are expensed as incurred. Internal-use software is amortized on a straight line basis over its estimated useful life. Capitalized software development costs are included in property, plant and equipment in the Consolidated Balance Sheet. As of December 31, 2017 and 2016, we had $39.5 million and $35.0 million, respectively, of capitalized software, net of accumulated depreciation, included in property, plant and equipment. Deferred Financing Costs Deferred financing costs are included in other assets in the Consolidated Balance Sheets and consist of the costs of obtaining long-term financing. These costs are amortized over the term of the related debt, using the straight-line method, which approximates the effective interest method. Amortization expense for deferred financing costs was approximately $2.1 million, $2.0 million and $3.1 million in 2017, 2016 and 2015, respectively. As of December 31, 2017, $4.2 million and $4.2 million of the total $8.4 million unamortized deferred financing costs, related to the 2024 Notes and the Credit Agreement, respectively. The annual amortization of deferred financing costs is expected to be as follows (in thousands): 2018 $ 2,060 2019 2,060 2020 2,000 2021 638 2022 638 Thereafter 958 Total $ 8,354 Goodwill For acquired businesses, we record 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. Of the $708.9 million total goodwill at December 31, 2017, $468.8 million related to the North America Storage Solutions segment, $58.9 million related to the U.K. Storage Solutions segment and $181.2 million related to the Tank & Pump Solutions segment. Reporting units are consistent with segments. Goodwill impairment testing requires judgment, including: the identification of the reporting units; determination of the fair value of each reporting unit; the assignment of assets, liabilities and goodwill to each reporting unit; estimates and assumptions regarding future cash flows and discount rates; and an assumption regarding the form of the transaction in which the reporting unit would be acquired by a market participant. Management assesses potential impairment of goodwill on an annual basis at December 31, or whenever events or changes in circumstances indicate that the carrying value may not be recoverable. We have determined that the reporting units are consistent with our identified segments. Some factors management considers important which could indicate an impairment review include the following: • significant under-performance relative to historical, expected or projected future operating results; • significant changes in the manner of our use of the acquired assets or the strategy for the overall business; • market capitalization relative to net book value; and • significant negative industry or general economic trends. Management may choose to assess qualitative factors to determine if it is more-likely-than-not that goodwill might be impaired and whether or not to perform the two-step goodwill impairment test. When we review goodwill for impairment utilizing a two-step process, the first step of the impairment test requires a comparison of the fair value of each of our reporting unit’s net assets to the respective carrying value of net assets. If the carrying value of a reporting unit’s net assets is less than its fair value, no indication of impairment exists and a second step is not performed. If the carrying amount of a reporting unit’s net assets is higher than its fair value, there is an indication that an impairment may exist and a second step must be performed. If the second step is necessary, management is required to determine the implied fair value of the goodwill and compare it to the carrying value of the goodwill. The fair value of the reporting units would be assigned to the respective assets and liabilities of each reporting unit as if the reporting units had been acquired in separate and individual business combinations and the fair value of the reporting units was the price paid to acquire the reporting units. The excess of the fair value of the reporting units over the amounts assigned to their respective assets and liabilities is the implied fair value of goodwill. If the carrying amount of the reporting unit’s goodwill is greater than the implied fair value of its goodwill, an impairment loss must be recognized for the difference. When assessing the fair value of the reporting units under the two-step impairment test, management considers both the market approach and the income approach. Under the market approach, the fair value of the reporting unit is based on quoted market prices of companies comparable to the reporting unit being valued. Under the income approach, the fair value of the reporting unit is based on the present value of estimated cash flows. The income approach is dependent on a number of significant management assumptions, including estimated future revenue growth rates and discount rates. Other estimates relate to tax payments, operating margins and capital expenditures. Each approach is given equal weight in arriving at the fair value of the reporting unit. As of December 31, 2017 and 2016, management assessed qualitative factors and determined it is more likely than not each of the reporting unit’s assigned goodwill had estimated fair values greater than the respective reporting unit’s individual net asset carrying values; therefore, the two step impairment test was not performed. In connection with our goodwill impairment test that was conducted as of December 31, 2015, we chose to perform the first step of the goodwill impairment test for each of our reporting units. Our goodwill impairment testing as of this date indicated that both of our Storage Solutions reporting units and our Tank & Pump Solutions reporting unit had estimated fair values which substantially exceeded their respective carrying amounts. The second step of the impairment test was not required for any of the reporting units. The following table shows the activity and balances related to goodwill from January 1, 2016 to December 31, 2017: (In thousands) Balance at January 1, 2016 (1) $ 706,387 Acquisitions 6,449 Adjustments 1,071 Foreign currency (2) (10,349 ) Balance at December 31, 2016 (1) 703,558 Acquisitions — Adjustments 18 Foreign currency (2) 5,331 Balance at December 31, 2017 (1) $ 708,907 (1) Includes accumulated amortization of $2.0 million and accumulated impairment of $12.5 million. (2) Represents foreign currency translation adjustments related to the U.K. portable storage reporting unit. Intangibles 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 are amortized based on the estimated attrition rates of the underlying customer base, other intangibles are amortized using the straight-line method. The following table reflects balances related to intangible assets for the years ended December 31: 2017 2016 Estimated Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) Customer relationships 15 - 20 $ 93,235 $ (34,660 ) $ 58,575 $ 92,515 $ (28,729 ) $ 63,786 Trade names/trademarks 5 - 10 5,954 (3,312 ) 2,642 5,892 (2,364 ) 3,528 Non-compete agreements 5 1,890 (1,114 ) 776 1,886 (813 ) 1,073 Other 20 60 (29 ) 31 59 (26 ) 33 Total $ 101,139 $ (39,115 ) $ 62,024 $ 100,352 $ (31,932 ) $ 68,420 Amortization expense for amortizable intangibles was approximately $6.5 million, $6.4 million and $6.0 million in 2017, 2016 and 2015, respectively. See information regarding intangibles acquired in conjunction with company acquisitions in Note 3. Based on the carrying value at December 31, 2017, future amortization of intangible assets is expected to be as follows for the years ended December 31 (in thousands): 2018 $ 6,485 2019 6,271 2020 5,147 2021 4,909 2022 4,608 Thereafter 34,604 Total $ 62,024 Impairment of Long-Lived Assets (Other than Goodwill) Our rental fleet, property, plant and equipment, and finite-lived intangibles are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may be impaired. (See potential impairment indicators under “Goodwill” above). If this review indicates the carrying value of these assets will not be recoverable, as measured based on estimated undiscounted cash flows over their remaining life, the carrying amount would be adjusted to fair value. The cash flow estimates contain management’s best estimates using appropriate and customary assumptions and projections at the time of evaluation. During the first quarter of 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 and we conducted a review for impairment for these long-lived assets as of March 31, 2015. Based on this review, an impairment loss was recorded in the quarter ended March 31, 2015. The total impairment of the wood mobile offices was $64.6 million during 2015. See additional discussion regarding the impairment and the divestiture of the wood mobile offices in Note 4. There were no indicators of further impairment at December 31, 2017 or at December 31, 2016. Purchase Accounting We account for acquisitions under the acquisition method. Under the acquisition method of accounting, we record assets acquired and liabilities assumed at their estimated fair market value on the date of acquisition. Goodwill is measured as the excess of the fair value of the consideration transferred over the fair value of the identifiable net assets. Estimated fair values of acquired assets and liabilities is provisional and could change as additional information is received. We finalize valuations as soon as practicable, but not later than one-year from the acquisition date. Any subsequent changes to purchase price allocations results in a corresponding adjustment to goodwill. The determination of the fair value of intangible assets requires the use of significant judgment with regard to (i) the fair value; and (ii) whether such intangibles are amortizable or non-amortizable and, if amortizable, the period and the method by which the intangible asset will be amortized. We estimate the fair value of acquisition-related intangible assets principally based on projections of cash flows that will arise from identifiable intangible assets of acquired businesses. The projected cash flows are discounted to determine the present value of the assets at the dates of acquisition. Revenue Recognition Rental revenue is generated from the direct rental of our fleet to our customers, including ancillary revenue such as fleet delivery and pickup. We enter into contracts with our customers to rent equipment based on a monthly rate for our Storage Solutions fleet and a daily, weekly or monthly rate for our Tank & Pump Solutions fleet. Revenues from renting are recognized ratably over the rental period. The rental continues until cancelled by the customer or the Company. Customers may utilize our equipment delivery and pick-up services in conjunction with the rental of equipment, but it is not required. Revenue pursuant to the pick up or delivery of a rented unit is recognized in rental revenue upon completion of the service. When customers are billed in advance, we defer recognition of revenue and record unearned rental revenue at the end of the period. If equipment is returned prior to the end of the contractually obligated period, the excess, if any, between the amount the customer is contractually required to pay, over the cumulative amount of revenue recognized to date, is recognized as incremental revenue upon return. Sales revenue is primarily generated by the sale of new and used units, and to a lesser extent, parts and supplies sold to Tank & Pump Solutions customers. We recognize revenues from sales of units upon delivery when the risk of loss passes, the price is fixed and determinable and collectability is reasonably assured. We sell our units pursuant to sales contracts stating the fixed sales price. Cost of Sales Cost of sales in our consolidated statements of income includes the costs for units we sell, and to a lesser extent the costs of parts and supplies sold to Tank & Pump Solutions customers. Similar costs associated with units that we rent are capitalized in the balance sheet under “Rental fleet”. Advertising Costs Advertising expense was $4.0 million, $3.9 million and $4.1 million in 2017, 2016 and 2015, respectively. The balance of prepaid advertising costs, which are never amortized more than twelve months, was less than $0.1 million at both December 31, 2017 and 2016. Income Taxes In preparing our consolidated financial statements, we recognize income taxes in each of the jurisdictions in which we operate. For each jurisdiction, we estimate the actual amount of taxes currently payable or receivable as well as deferred tax assets and liabilities attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is provided for those deferred tax assets for which it is more likely than not that the related benefits will not be realized. In determining the amount of the valuation allowance, we consider estimated future taxable income as well as feasible tax planning strategies in each jurisdiction. If we determine that we will not realize all or a portion of our deferred tax assets, we will increase our valuation allowance with a charge to income tax expense. Conversely, if we determine that we will ultimately be able to realize all or a portion of the related benefits for which a valuation allowance has been provided, all or a portion of the related valuation allowance will be reduced with a credit to income tax expense. We record uncertain tax positions using a two-step process, whereby (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. The Company recognizes interest and penalties related to unrecognized tax benefits within the interest expense line and rental, selling and general expenses line, respectively, in the accompanying Consolidated Statements of Income. Accrued interest and penalties are included within the related liability lines in the Consolidated Balance Sheets. We have recorded certain income tax effects for the impact of the Tax Cuts and Jobs Act (the “Tax Act”) which was enacted on December 22, 2017 in those situations where we have all information necessary. Additionally, we have recorded a provisional effect where we could reasonably estimate the effect of the Tax Act. We will finalize the provisional amounts within one year from the date of enactment. See additional information regarding income taxes in Note 7. Earnings per Share Basic earnings per share (“EPS”) is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Restricted stock awards are subject to the risk of forfeiture and are not included in the calculation of basic weighted average number of common shares outstanding until vested. Diluted EPS is calculated under the treasury stock method. Potential common shares included restricted common stock and incremental shares of common stock issuable upon the exercise of stock options. The following table is a reconciliation of net income and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted EPS for the years ended December 31: For the Years Ended December 31, 2017 2016 2015 (In thousands, except per share data) Numerator: Net income $ 122,228 $ 47,248 $ 5,574 Denominator: Weighted average shares outstanding - basic 44,055 44,145 44,953 Dilutive effect of share-based awards 199 245 507 Weighted average shares outstanding - diluted 44,254 44,390 45,460 Earnings per share: Basic $ 2.77 $ 1.07 $ 0.12 Diluted 2.76 1.06 0.12 The following table represents the number of stock options and restricted stock awards that were issued or outstanding but excluded in calculating diluted EPS because their effect would have been anti-dilutive, or the underlying performance criteria has not been met, for the years ended December 31: For the Years Ended December 31, 2017 2016 2015 (In thousands) Stock options 2,078 2,076 1,135 Restricted stock awards 2 5 1 Total 2,080 2,081 1,136 Fair Value Measurements Fair value is 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 determined by assumptions that market participants would use in pricing an asset or liability. We categorize each of our fair value measurements in one of the following three levels based on the lowest level of input that is significant to the fair value measurement: 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 December 31, 2017 and 2016, we did not have any financial instruments required to be recorded at fair value on a recurring basis. The carrying amounts of cash, cash equivalents, receivables, accounts payable and accrued liabilities approximate fair values based on their short-term nature. The fair values of our revolving credit facility and capital leases are estimated using discounted cash flow analyses, based on our current incremental borrowing rates for similar types of borrowing arrangements. Based on the borrowing rates currently available to us for bank loans with similar terms and average maturities, the fair value of our revolving credit facility debt and capital leases, which are measured using Level 2 inputs, at December 31, 2017 and 2016 approximated their respective book values. The fair value of our $250 million aggregate principal amount of 5.875% senior notes due July 1, 2024 (the “Senior Notes” or “2024 Notes”) is based on their latest sales price at the end of each period obtained from a third-party institution and is Level 2 in the fair value hierarchy as there is not an active market for these Senior Notes. The Senior Notes are presented on the balance sheet net of debt issuance costs. The gross carrying value and the fair value of the Senior Notes are as follows: 2017 2016 (In thousands) Carrying value $ 250,000 $ 250,000 Fair value 262,500 258,750 Derivatives In the normal course of business, our operations are exposed to fluctuations in interest rates. We have in the past, and may again in the future, address a portion of these risks through a controlled program of risk management that includes the use of derivative financial instruments. The objective of controlling these risks is to limit the impact of fluctuations in interest rates on earnings. At December 31, 2017 and 2016, we did not have any derivative financial instruments. Share-Based Compensation We calculate the fair value of stock options using the Black-Scholes-Merton option pricing valuation model, which incorporates various assumptions including volatility, expected life and risk-free interest rates. The fair value of restricted stock awards is estimated as the closing price of our common stock on the date of grant. Compensation related to service-based awards are recognized on a straight-line basis over the vesting period, which is generally three to five years. Compensation expense related to performance-based awards is recognized over the implicit service period of the award based on management’s estimate of the probability of the performance criteria being satisfied, adjusted at each balance sheet date. Expense related to performance-based awards that have multiple vesting dates, is recognized using the accelerated attribution approach, whereby each vesting tranche is treated as a separate award for purposes of determining the implicit service period. Share based compensation expense is reduced for forfeitures when they occur. Foreign Currency Translation and Transactions For our non-U.S. operations, the local currency is the functional currency. All assets and liabilities are translated into U.S. dollars at period-end exchange rates and all income statement amounts are translated at the average exchange rate for each month within the year. Impact of Recently Issued Accounting Standards Tax Reform. During December 2017, the Financial Accounting Standards Board (the “FASB”) released Staff Accounting Bulletin No. 118 (the “Bulletin”) which provides accounting guidance regarding accounting for income taxes for the reporting period that includes the enactment of the Tax Act. The Bulletin provides guidance in those situations where the accounting for certain income tax effects of the Tax Act will be incomplete by the time financial statements are issued for the reporting period that includes the enactment date. For those elements of the Tax Act that cannot be reasonably estimated, no effect will be recorded. The staff has provided in the Bulletin that in situations where the accounting is incomplete for certain effects of the Tax Act, a measurement period which begins in the reporting period that includes the enactment of the Tax Act and ends when the entity has obtained, prepared and analyzed the information needed in order to complete the accounting requirements. The measurement period shall not exceed one year from enactment. Please refer to the significant accounting policies for income taxes above in this footnote, as well as Note 7 for additional information. Share-Based Compensation – Modifications . In May 2017, the FASB issued a standard which clarifies what constitutes a modification of a share-based payment award. This standard is effective for annual and interim periods beginning after December 15, 2017. We will implement this standard on January 1, 2018 and apply the guidance prospectively to modifications after that date. Business Combinations . In January 2017, the FASB issued a standard which clarifies the definition of a business and provides a new framework for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This standard is effective for annual and interim periods beginning after December 15, 2017. We will implement this standard on January 1, 2018 and will apply the guidance prospectively to future transactions. Intangibles – Goodwill and Other. In January 2017, the FASB issued a standard requiring an entity to no longer perform a hypothetical purchase price allocation to measure goodwill impairment. Instead, impairment will be measured using the difference between the carrying amount and the fair value of the reporting unit. This standard is effective for annual and interim periods beginning after December 15, 2019. Entities may early adopt the guidance for goodwill impairment tests with measurement dates after January 1, 2017. We have not determined an adoption date and do not expect the adoption of this standard to have a material effect on our consolidated financial statements. Share-Based Compensation. In March 2016, the FASB issued a standard intended to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. We implemented this standard on January 1, 2017. This standard eliminates the requirement that excess tax benefits be realized before companies can recognize them. As a result, utilizing the modified retrospective method, we recorded a cumulative-effect adjustment for previously unrecognized excess tax benefits of $18.5 million in the opening balance sheet for 2017, with an offsetting increase to retained earnings. In addition, the standard allows us to make a policy election to either continue to reduce share-based compensation expense for forfeitures in future periods, or to recognize forfeitures as they occur. We have chosen to record forfeitures as they occur and recorded an immaterial adjustment to reflect a cumulative-effect adjustment to the opening balance sheet for 2017 to reflect the difference between the fair value estimate of awards historically expected to be forfeited and the fair value estimate of awards actually forfeited. This standard also requires all excess tax benefits and tax deficiencies associated with the exercise of stock options and vesting of restricted stock to be recorded as income tax expense or benefit. Increases and decreases in the aggregate intrinsic value (or negative value) of such activity could introduce volatility in our effective tax rate. The remaining provisions of the new guidance did not have a material effect on our consolidated financial statements. Leases . In February 2016, the FASB issued a standard on lease accounting requiring a lessee to recognize assets and liabilities on the balance sheet for leases with lease terms greater than 12 months. This standard is effective for annual and interim periods beginning after December 15, 2018. Early adoption is permitted and the standard requires the use of a modified retrospective transition method. While we are continuing to evaluate all potential impacts of the standard, we do not believe the accounting for our contractual rental revenue will be materially affected by the adoption of this standard. We anticipate the lessee accounting for operating leases under the standard will have a material effect on our statement of financial position and are in the process of evalu

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Acquisitions	(3) Acquisitions 2016 Acquisitions During the year ended December 31, 2016, we completed three acquisitions of portable storage businesses. One acquisition expanded our business in Dallas, Texas. The other two were in the United Kingdom. The accompanying consolidated financial statements include the operations of the acquired businesses from the dates of acquisition. The aggregate purchase price for the assets acquired were recorded based on their estimated fair values at the date of the acquisitions. We have not disclosed the pro-forma impact of the acquisitions on operations as they were immaterial to our financial position or results of operations in the aggregate. The components of the purchase price and net assets acquired during the year ended December 31, 2016 (as adjusted in 2017) are as follows (in thousands): Net Assets Acquired: Cash $ 1,562 Rental fleet 10,054 Property, plant and equipment 285 Intangible assets: Customer relationships 1,616 Non-compete agreements 50 Goodwill 6,467 Other assets 1,218 Other liabilities (3,125 ) Total $ 18,127 Total, less cash acquired $ 16,565 2015 Acquisitions During the year ended December 31, 2015, we completed two acquisitions of portable storage businesses. These acquisitions expanded our existing operations in the Glasgow, Scotland market, and further strengthened our positions in Knoxville and Chattanooga, Tennessee. The accompanying consolidated financial statements include the operations of the acquired businesses from the dates of acquisition. The aggregate purchase price for the assets acquired were recorded based on their estimated fair values at the date of the acquisitions. We have not disclosed the pro-forma impact of the acquisitions on operations as they were immaterial to our financial position or results of operations in the aggregate. The components of the purchase price and net assets acquired during the year ended December 31, 2015 (as adjusted in 2016) are as follows (in thousands): Net Assets Acquired: Rental fleet $ 11,057 Property, plant and equipment 157 Intangible assets: Customer relationships 759 Non-compete agreements 74 Goodwill 6,443 Other assets 316 Other liabilities (281 ) Total $ 18,525 We did not make any acquisitions during the year ended December 31, 2017.

Impairment and Divestiture of N

Impairment and Divestiture of North American Wood Mobile Offices	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Impairment and Divestiture of North American Wood Mobile Offices	(4) Impairment and Divestiture of North American Wood Mobile Offices 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 steel containers and steel ground level offices, resulting in lower margins as compared to our other Storage Solutions products and our Tank & Pump Solutions 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. Based upon the events described above, we 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 these 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. On April 16, 2015, we entered into a definitive agreement to sell our wood mobile offices within the North American portable storage segment for a cash price of $92.0 million, less associated deferred revenue and customer deposits of $6.8 million. The net assets were reclassified to held for sale as of that date. The transaction closed on May 15, 2015 and we recorded a net loss. For the twelve months ended December 31, 2015, the following amounts were recorded for the impairment and divestiture of the wood mobile office fleet: (In thousands) Estimated fair market value $ 92,000 Net book value: Wood mobile offices in rental fleet 155,429 Ancillary items in property, plant and equipment 1,201 Impairment loss $ (64,630 ) Sale price $ 92,000 Book value of divested assets after impairment 92,000 Selling expenses 1,498 Net loss on sale of wood mobile offices $ (1,498 ) Asset impairment charge and loss on divestiture, net $ (66,128 ) We also entered into a transition services agreement with the purchaser, whereby we agreed to provide short-term direct services such as transportation and maintenance for the wood mobile offices on behalf of the purchaser, as well as house units on our leased properties and provide certain administrative services such as billing and cash collection during 2015. The revenue related to this agreement is included in other revenue, and the expenses for providing these services are included in rental, selling and general expenses.

Rental Fleet

Rental Fleet	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Rental Fleet	(5) Rental Fleet Depreciation expense related to our rental fleet for 2017, 2016 and 2015 was $31.0 million, $32.3 million and $34.1 million, respectively. At December 31, 2017 and 2016, all rental fleet units were pledged as collateral under the Credit Agreement. Appraisals on our rental fleet are required by our lenders on a regular basis. The appraisal typically reports no difference in the value of the unit due to the age or length of time it has been in our fleet. Based in part upon our lender’s third-party appraiser who evaluated our fleet as of September 30, 2017, management estimates that the net orderly liquidation appraisal value as of December 31, 2017 was approximately $1.1 billion. Our net book value for this fleet as of December 31, 2017 was $989.2 million. Rental fleet at December 31 consisted of the following: Residual Value as Percentage of Original Cost (1) Useful Life in Years 2017 2016 (In thousands) Storage Solutions: Steel storage containers 55% 30 $ 655,553 $ 625,094 Steel ground level offices 55% 30 374,836 347,574 Other 8,290 4,430 Total 1,038,679 977,098 Accumulated depreciation (168,112 ) (151,238 ) Total Storage Solutions fleet, net $ 870,567 $ 825,860 Tank & Pump Solutions: Steel tanks 25 $ 64,254 $ 61,955 Roll-off boxes 15 - 20 29,897 28,743 Stainless steel tank trailers 25 28,871 29,150 Vacuum boxes 20 12,700 11,512 De-watering boxes 20 6,361 5,429 Pumps and filtration equipment 7 12,680 13,690 Other 7,088 6,150 Total 161,851 156,629 Accumulated depreciation (43,264 ) (32,424 ) Total Tank & Pump Solutions fleet, net $ 118,587 $ 124,205 Total rental fleet, net $ 989,154 $ 950,065 (1) Tank & Pump Solutions fleet has been assigned zero residual value.

Debt

Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Debt	(6) Debt Lines of Credit On December 14, 2015, we entered into the Credit Agreement with Deutsche Bank AG New York Branch, as administrative agent, and other lenders party thereto. The Credit Agreement provides for a five-year, $1.0 billion first lien senior secured revolving credit facility maturing on or before the earlier of (i) December 14, 2020 and (ii) the date that is 90 days prior to the final maturity date of the Senior Notes, if such Senior Notes remain outstanding on such date. The Credit Agreement also provides for the issuance of irrevocable standby letters of credit by U.S.-based lenders in amounts totaling up to $50.0 million, by U.K.-based lenders in amounts totaling up to $20.0 million, and by Canadian-based lenders in amounts totaling up to $20.0 million. The obligations of Mobile Mini and its subsidiary guarantors under the Credit Agreement are secured by a blanket lien on substantially all of our 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 our option at either: (i) the London interbank offered rate (“LIBOR”) plus an applicable margin (“LIBOR Loans”), or (ii) the prime rate plus an applicable margin (“Base Rate Loans”). The applicable margin for each type of loan is based on an availability-based pricing grid and ranges from 1.25% to 1.75% for LIBOR Loans and 0.25% to 0.75% for Base Rate Loans at each measurement date. As of December 31, 2017, the applicable margins are 1.50% for LIBOR Loans and 0.50% 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’s or its subsidiaries’ assets, (ii) repurchase or pay dividends or make certain other restricted payments on capital stock and certain other securities, or prepay certain indebtedness, (iii) incur additional indebtedness or engage in certain other types of financing transactions, and (iv) make acquisitions or other investments. In addition, we must comply with a minimum fixed charge coverage ratio of 1.00 to 1.00 as of the last day of each quarter, upon the minimum availability amount under the Credit Agreement falling below the greater of (y) $90 million and (z) 10% of the lesser of the then total revolving loan commitment and aggregate borrowing base. As of December 31, 2017, we were in compliance with the minimum borrowing availability threshold set forth in the Credit Agreement and, therefore, are not subject to any financial maintenance covenants. The weighted average interest rate under the lines of credit was approximately 2.6% in 2017 and 2.1% in 2016. The average outstanding balance was approximately $637.9 million and $652.0 million during 2017 and 2016, respectively. At December 31, 2017, the Company had approximately $634.3 million of borrowings outstanding and $361.4 million of additional borrowing availability under the Credit Agreement, based upon borrowing base calculations as of such date. Senior Notes On May 9, 2016, we issued $250.0 million aggregate principal amount of the 2024 Notes at an initial offering price of 100% of their face value. The net proceeds from the sale of the 2024 Notes were used to (i) redeem all $200.0 million aggregate principal amount of our outstanding 7.875% senior notes due December 1, 2020 (the “2020 Notes”) at a redemption price of 103.938% of the principal amount thereof plus accrued and unpaid interest to, but not including, the redemption date of June 8, 2016, (ii) repay a portion of the indebtedness outstanding under our asset-based revolving credit facility, and (iii) pay fees and expenses related to the offering of the 2024 Notes. As a result of the redemption of the 2020 Notes during 2016, we recognized $9.2 million in debt extinguishment expense, consisting of $7.9 million in debt redemption premiums and $1.3 million in contractually required interest above the amount payable prior to the redemption. Additionally, we wrote off $2.3 million of previously deferred costs associated with the 2020 Notes that had not yet been amortized. The 2024 Notes bear interest at a rate of 5.875% per year, accruing from May 9, 2016, have an eight-year term and mature on July 1, 2024. The 2024 Notes are senior unsecured obligations of the Company and are unconditionally guaranteed on a senior unsecured basis by certain of our existing and future domestic subsidiaries. Obligations Under Capital Leases At December 31, 2017 and 2016, obligations under capital leases for certain real property, transportation, technology and office related equipment were $52.8 million and $50.7 million, respectively. Certain of the lease agreements provide us with a purchase option at the end of the lease term. The leases have been capitalized using interest rates primarily ranging from approximately 1.7% to 3.5% and are secured by the property and equipment under lease. Assets recorded under capital lease obligations totaled approximately $71.6 million as of December 31, 2017 and $62.6 million as of December 31, 2016. Related accumulated amortization totaled approximately $25.4 million as of December 31, 2017 and $16.0 million as of December 31, 2016. The assets acquired under capital leases and related accumulated amortization are included in property, plant and equipment, net, in the Consolidated Balance Sheets. The related amortization is included in depreciation and amortization expense in the Consolidated Statements of Income. Future minimum capital lease payments at December 31, 2017 are as follows (in thousands): 2018 $ 9,316 2019 9,364 2020 10,449 2021 9,981 2022 8,483 Thereafter 9,086 Total 56,679 Amount representing interest (3,888 ) Present value of minimum lease payments $ 52,791 Future Debt Obligations The scheduled maturity for debt obligations for balances outstanding at December 31, 2017 are as follows: Lines of Credit Senior Notes Capital Lease Obligations Total (In thousands) 2018 $ — $ — $ 8,143 $ 8,143 2019 — — 8,393 8,393 2020 634,285 — 9,690 643,975 2021 — — 9,462 9,462 2022 — — 8,182 8,182 Thereafter — 250,000 8,921 258,921 Total $ 634,285 $ 250,000 $ 52,791 $ 937,076

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	(7) Income Taxes As a result of the Tax Act, we remeasured our net deferred tax liabilities and recognized a net benefit of $77.6 million. In addition, based on information currently available to us, we recorded a provisional income tax expense of $3.1 million related to the deemed repatriation of foreign earnings. Because we previously asserted permanent reinvestment, we did not have a deferred tax liability related to our foreign earnings. It is our intent to continue to permanently reinvest such earnings. We will continue to obtain and analyze information related to the deemed repatriation of foreign earnings associated with historical ownership and financial information, including depreciation estimates, and will finalize the provision within one year of the enactment date. Additionally, there is currently uncertainty as to what portions if any of the Tax Act will be adopted by the U.S. state and local taxing authorities. Income (loss) before taxes from continuing operations for the years ended December 31 consisted of the following: For the Years Ended December 31, 2017 2016 2015 (In thousands) U.S. $ 52,609 $ 45,430 $ (23,750 ) Foreign 21,515 23,468 24,502 Total $ 74,124 $ 68,898 $ 752 The provision for income taxes from continuing operations for the years ended December 31 consisted of the following: For the Years Ended December 31, 2017 2016 2015 (In thousands) Current: U.S. federal $ — $ (1,124 ) $ 1,124 State 990 1,093 326 Foreign 886 — — Total current 1,876 (31 ) 1,450 Deferred U.S. federal (59,257 ) 16,628 (8,549 ) State 7,000 1,215 (1,190 ) Foreign 2,277 3,838 3,467 Total deferred (49,980 ) 21,681 (6,272 ) Total (benefit) provision for income taxes $ (48,104 ) $ 21,650 $ (4,822 ) A reconciliation of the U.S. federal statutory rate to our effective tax rate for the years ended December 31 is as follows: For the Years Ended December 31, 2017 2016 2015 U.S. federal statutory rate 35.0 % 35.0 % 35.0 % State taxes, net of federal benefit 4.5 1.6 (222.4 ) Nondeductible expenses and other 0.1 1.1 128.1 U.S. mandatory repatriation 4.2 — — Adjustment of net deferred tax liability for enacted tax rate change (104.7 ) 0.2 (97.6 ) Foreign rate differential (4.0 ) (6.5 ) (484.3 ) Effective tax rate (64.9 ) % 31.4 % (641.2 ) % The effective income tax (benefit) rate of (64.9%) for the year ended December 31, 2017 was primarily impacted by the accounting for the U.S. tax reform enacted on December 22, 2017 which reduced the federal income tax rate from 35% to 21%. The company recognized a net benefit of $77.6 million related to the remeasurement of its net deferred tax liabilities for this rate change, affecting the rate by (104.7%). Additionally, the company recorded a provisional expense of $3.1 million for the mandatory repatriation of foreign earnings, affecting the rate by 4.2%. Our effective income tax rates in the years ended December 31, 2016 and 2015 were affected by enacted rate changes to the U.K. income tax rate from 20% to 18% during 2015, and from 18% to 17% during 2016. The changes in the U.K. income tax rate resulted in a $0.9 million benefit and a $1.4 million benefit during the years ended December 31, 2016 and December 31, 2015, respectively. The 2015 effective tax rate was further affected by the losses in North America driven by asset impairment and restructuring expenses. The components of the net deferred tax liability at December 31 are approximately as follows: 2017 2016 (In thousands) Deferred tax assets: Net operating loss carryforwards $ 44,228 $ 71,126 Deferred revenue and expenses 8,435 11,050 Accrued compensation and other benefits 4,118 2,465 Allowance for doubtful accounts 1,532 2,026 Equity compensation 7,092 10,937 Capital leases 12,999 18,984 Other 1,456 513 Total deferred tax assets 79,860 117,101 Valuation allowance (1,126 ) (1,126 ) Net deferred tax assets 78,734 115,975 Deferred tax liabilities Fixed assets (218,605 ) (309,010 ) Intangibles and goodwill (33,165 ) (46,585 ) Other (718 ) (1,070 ) Total deferred tax liabilities (252,488 ) (356,665 ) Net deferred tax liabilities $ (173,754 ) $ (240,690 ) A net deferred tax liability of approximately $19.3 million and $18.5 million related to our U.K. operations has been combined with the net deferred tax liabilities of our U.S. operations in the Consolidated Balance Sheets at December 31, 2017 and 2016, respectively. At December 31, 2017, we had U.S. federal net operating loss carryforwards on our federal tax return of approximately $206.4 million, which expire if unused from 2028 to 2034. At December 31, 2017, we had net operating loss carryforwards on the various states’ tax returns in which we operate totaling $114.2 million, which expire if unused from 2018 to 2036. Management evaluates the ability to realize our deferred tax assets on a quarterly basis and adjusts the amount of our valuation allowance if necessary. Over the past three years, we have generated $122.2 million of federal taxable income. Management currently believes that the ability to generate adequate future taxable income through operations and the reversal of taxable temporary differences are adequate to recover the unreserved portion of these deferred tax assets. For income tax purposes, deductible compensation related to share-based awards is based on the value of the award when realized, which may be different than the compensation expense recognized by us in our financial statements, which is based on the award value on the date of grant. The difference between the value of the award upon grant, and the value of the award when ultimately realized, creates either additional tax expense or benefit. As our stock is publicly traded, it is possible that we have undergone a change in ownership for federal income tax purposes, which can limit the amount of net operating loss currently available as a deduction. We have determined that even if such an ownership change has occurred, it would not impair the realization of the deferred tax asset resulting from the federal net operating loss carryover. We paid income and franchise taxes of approximately $2.6 million in 2017, $1.8 million in 2016 and $4.9 million in 2015. These amounts are lower than the recorded expense in the years due to net operating loss carryforwards and general business credit utilization. We are subject to taxation in the U.S. federal jurisdiction, as well as various U.S. state and foreign jurisdictions. We have identified our U.S. federal tax return as our “major” tax jurisdiction. As of December 31, 2017, we are no longer subject to examination by U.S. federal tax authorities for years prior to 2014, to examination for any U.S. state taxing authority prior to 2012, or to examination for any foreign jurisdictions prior to 2013. All subsequent periods remain open to examination. Uncertain tax positions are recognized and measured using a two-step approach. 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 process, 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. As of December 31, 2017, we had approximately $14.1 million of gross unrecognized tax benefits, of which, none would affect our effective tax rate if recognized. A reconciliation of the beginning and ending balance of unrecognized tax benefits is as follows: 2017 2016 (In thousands) Beginning balance $ 5,874 $ — Additions based on tax positions related to the current year — — Additions for tax positions of prior years 8,266 5,874 Ending balance $ 14,140 $ 5,874 Of the amount of unrecognized tax benefits outstanding at December 31, 2017, all of the amount is expected to reverse within the next twelve months. Our policy for recording interest and penalties associated with uncertain tax positions 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 our Consolidated Statements of Income.

Transactions with Related Perso

Transactions with Related Persons	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Transactions with Related Persons	(8) Transactions with Related Persons With the ETS Acquisition, we acquired its wholly owned subsidiary, Water Movers, which has two real property leases with an entity partly owned by Michael Watts, a member of our board of directors (“Board”). These leases began in 2013, prior to the ETS Acquisition, and expire in 2023. Rental payments under these leases are currently approximately $18,000 per month. Any future renewals of these leases will be approved by the Board as related party transactions. Mr. Watts is also an investor in a digital marketing and strategy company with which Mobile Mini conducts business. During 2017, Mobile Mini made approximately $0.7 million in payments to this company. There was no payable due at December 31, 2017. Prior to becoming Senior Vice President – Chief Human Resources Officer on November 30, 2017, Mark Krivoruchka was president and owner of a management consultant company that provided human resources consulting and staffing services to Mobile Mini. For the year ended December 31, 2017, Mobile Mini expensed approximately $1.0 million related to this agreement, including reimbursement for expenses incurred. As of December 31, 2017 Mobile Mini owed the consulting company $0.6 million.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	(9) Share-Based Compensation We have historically awarded stock options and restricted stock 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 our stockholders and administered by the compensation committee of the 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, restricted stock awards, restricted stock units, stock appreciation rights, performance stock, performance units and other stock-based awards. Participants may be granted any one of the equity awards or any combination. We do not award stock options with an exercise price below the market price of the underlying securities on the date of award. As of December 31, 2017, 1.8 million shares are available for future grants assuming performance-based options vest at their target amounts. Generally stock options have contractual terms of ten years. Service-based awards. We grant share-based compensation awards that vest over time subject to the employee rendering service over the vesting period. The majority of the service–based awards vest in equal annual installments over a period of three to four years. The expense for service-based awards is expensed ratably over the full service period of the grant. Performance-based awards . All stock options granted in 2017 and 2016 vest contingently over a three-year period upon the achievement of certain performance criteria related to the operating performance of the Company. Participants may earn from 50% to 200% of the target options awarded assuming at least minimum targets are achieved, and depending on actual results. If minimum targets are not achieved no options are vested. Options which are not vested in any given year are forfeited, but the subsequent years are not affected. Expense related to performance-based awards that have multiple vesting dates, is recognized using the accelerated attribution approach, whereby each vesting tranche is treated as a separate award for purposes of determining the implicit service period. The accelerated attribution approach results in a higher expense during the earlier years of vesting. Non-employee director awards . Each non-employee director serving on the Board receives an automatic award of shares of Mobile Mini’s common stock annually. These awards vest 100% when granted. For each of the years ended December 31, 2017, 2016 and 2015, $0.8 million of expense was recognized related to these grants. Share-based compensation expense . The following table summarizes our share-based compensation for the years ended December 31: For the Years Ended December 31, 2017 2016 2015 (In thousands) Share-based compensation expense included in: Rental, selling and general expenses $ 7,255 $ 7,220 $ 12,277 Restructuring expenses 118 179 1,550 Total share-based compensation $ 7,373 $ 7,399 $ 13,827 As of December 31, 2017, total unrecognized compensation cost related to stock option awards was approximately $2.1 million and the related weighted-average period over which it is expected to be recognized is approximately 0.9 years. As of December 31, 2017, the unrecognized compensation cost related to restricted stock awards was approximately $5.3 million, which is expected to be recognized over a weighted-average period of approximately 2.4 years. Stock options . The fair value of each stock option award is estimated on the date of the grant using the Black-Scholes-Merton option pricing model which requires the input of assumptions. We estimate 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 our historical data. The following are the key assumptions used for the period noted: 2017 2016 2015 Risk-free interest rate 1.7% - 2.1% 1.1% - 1.5% 1.3% - 1.7% Expected life of the options (years) 5.0 5.0 5.0 Expected stock price volatility 32.9% - 35.3% - 35.3% - Expected dividend rate 2.5% - 3.1% 2.2% - 3.1% 1.8% - 2.1% The following table summarizes stock option activity for the years ended December 31 (share amounts in thousands): 2017 2016 2015 Number of Shares Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price Options outstanding, beginning of year 3,292 $ 32.06 2,870 $ 33.40 2,649 $ 32.33 Granted 462 32.44 594 26.54 381 42.80 Canceled/Expired (352 ) 33.43 (155 ) 36.07 (98 ) 44.60 Exercised (233 ) 24.88 (17 ) 28.50 (62 ) 27.56 Options outstanding, end of year 3,169 32.49 3,292 32.06 2,870 33.40 Options exercisable, end of year 2,429 2,508 1,643 The stock options granted in 2017 and 2016 are performance-based and are shown in the table at the target award. The actual amount of shares that ultimately vest depends on achievement of performance criteria. As of December 31, 2017, approximately 0.7 million unvested performance-based stock options are included in the table above. The targets are set at the time of grant. For both 2017 and 2016, vesting conditions were related to the Company’s return on capital employed. Due to actual performance exceeding targets, the shares granted in 2017 that contingently vest based upon 2017 performance criteria will vest above target. As a result, in the first quarter of 2018, in addition to the target options included in the table above, we expect approximately 0.1 million shares will vest. Shares granted in 2016 and contingently vesting based upon 2017 criteria did not achieve the minimum vesting target criteria, which will result in the forfeiture of 0.1 million shares in the first quarter of 2018. A summary of stock options outstanding as of December 31, 2017, 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 3,169 $ 32.49 6.11 $ 11,568 Exercisable 2,429 32.84 5.36 8,554 The aggregate intrinsic value of options exercised during the period ended December 31, 2017, 2016 and 2015 was $1.6 million, $0.1 million and $0.8 million, respectively. The weighted average fair value of stock options granted was $8.23, $6.64 and $8.43 for the years ended December 31, 2017, 2016 and 2015, respectively. Restricted Stock Awards . The fair value of restricted stock awards is estimated as the closing price of our common stock on the date of grant. A summary of restricted stock activity is as follows (share amounts in thousands): Shares Weighted Average Grant Date Fair Value Restricted stock awards at January 1, 2015 343 $ 27.99 Awarded 107 37.17 Released (169 ) 28.22 Forfeited (39 ) 25.07 Restricted stock awards at December 31, 2015 242 31.70 Awarded 172 27.39 Released (130 ) 29.75 Forfeited (41 ) 28.36 Restricted stock awards at December 31, 2016 243 30.27 Awarded 163 32.25 Released (142 ) 30.39 Forfeited (30 ) 31.53 Restricted stock awards at December 31, 2017 234 31.42 The total fair value of restricted stock awards that vested in 2017, 2016 and 2015 were $4.3 million, $3.8 million and $4.8 million, respectively. As of December 31, 2017, all of the restricted stock awards outstanding vest over time subject to the employee rendering service over the vesting period.

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Benefit Plans	(10) Benefit Plans In the U.S. we sponsor 401(k) retirement plans designed to provide tax-deferred retirement benefits to employees in accordance with the provisions of Section 401(k) of the Internal Revenue Code. We also sponsor defined contribution programs in the U.K., and have a Registered Retirement Savings Plan regulated by Canadian law. Under the U.S. and Canadian plans we match a percentage of the participants’ contributions up to a specified amount. Under the U.K. plan, we contribute a percentage of each participant’s annual salary to the plan and, depending on the plan, employees may also be required to contribute a percentage of their annual salary into the plan. For the U.S. plans Company matches vest over a period of five years, while Company matches for U.K. and Canadian employees are immediately vested. Company contributions to all these benefit plans totaled approximately $0.9 million, $0.9 million and $1.1 million in 2017, 2016 and 2015, respectively. In each of the three years ending December 31, 2017, 2016 and 2015, we incurred approximately $34,000, $32,000 and $51,000, respectively, for administrative costs for these programs.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	(11) Commitments and Contingencies Operating Leases We lease our corporate offices and other properties and operating equipment from third parties under noncancelable operating leases. Rent expense under these agreements was approximately $23.9 million, $22.3 million and $22.7 million for the years ended December 31, 2017, 2016 and 2015, respectively. As of December 31, 2017, contractual commitments associated with lease obligations are as follows: Operating Lease Commitments Restructuring Related Lease Commitments Total (In thousands) 2018 $ 17,664 $ 307 $ 17,971 2019 14,794 26 14,820 2020 12,516 — 12,516 2021 10,369 — 10,369 2022 9,016 — 9,016 Thereafter 24,603 — 24,603 Total $ 88,962 $ 333 $ 89,295 Future minimum lease payments under restructured non-cancelable operating leases as of December 31, 2017, are included in accrued liabilities in the Consolidated Balance Sheet. See Note 13 for a further discussion on restructuring related commitments. Insurance Reserves We maintain insurance coverage for our operations and employees with appropriate aggregate, per occurrence and deductible limits as we reasonably determine is necessary or prudent considering current operations and historical experience. The majority of these coverages have large deductible programs which allow for potential improved cash flow benefits based on our loss control efforts, while guarantying a maximum premium liability. Our employee group health insurance program is a self-insured program with individual and aggregate stop loss limits. The insurance provider is responsible for funding all claims in excess of the calculated monthly maximum liability. This calculation is based on a variety of factors including the number of employees enrolled in the plan. Actual results may vary from estimates based on our actual experience at the end of the plan policy periods based on the carrier’s loss predictions and our historical claims data. We expense the deductible portion of the individual claims. However, we generally do not know the full amount of our exposure to a deductible in connection with any particular claim during the fiscal period in which the claim is incurred and for which we must make an accrual for the deductible expense. We make these accruals based on a combination of the claims development experience of our staff and our insurance companies, and, at year end, the accrual is reviewed and adjusted, in part, based on an independent actuarial review of historical loss data and using certain actuarial assumptions followed in the insurance industry. A high degree of judgment is required in developing these estimates of amounts to be accrued, as well as in connection with the underlying assumptions. In addition, our assumptions will change as our loss experience is developed. All of these factors have the potential for significantly impacting the amounts previously reserved in respect of anticipated deductible expenses and we may be required in the future to increase or decrease amounts previously accrued. Our worker’s compensation, auto and general liability insurance are purchased under large deductible programs. Our current per incident deductibles are: worker’s compensation $250,000, auto $500,000 and general liability $50,000. Under our various insurance programs, we have collective reserves recorded in accrued liabilities of $3.9 million and $4.2 million at December 31, 2017 and 2016, respectively. In connection with the issuance of our insurance policies, we have provided our various insurance carriers approximately $4.3 million in letters of credit as of December 31, 2017. General Litigation We are a party to various claims and litigation in the normal course of business. Our current estimated range of liability related to various claims and pending litigation is based on claims for which our 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 reasonable determination of the liability that could result from an unfavorable outcome. As additional information becomes available, we will assess the potential liability related to our pending litigation and revise our estimates. Such revisions in our estimates of the potential liability could materially impact our results of operation. We do not anticipate the resolution of such matters known at this time will have a material adverse effect on our business or consolidated financial position.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Stockholders' Equity	(12) Stockholders’ Equity Dividends During the twelve months ended December 31, 2017 we paid cash dividends of $0.91 per share for a total of $40.2 million. Each future quarterly dividend payment is subject to review and approval by the Board. In addition, our Credit Agreement contains restrictions on the declaration and payment of dividends. Declaration Date Payment Date Record Date (close of business) Dividend Amount Per Share of Common Stock January 31, 2017 March 15, 2017 March 1, 2017 $ 0.227 April 26, 2017 May 31, 2017 May 17, 2017 0.227 July 18, 2017 August 30, 2017 August 16, 2017 0.227 October 18, 2017 November 29, 2017 November 15, 2017 0.227 Treasury stock On November 6, 2013, the Board approved a share repurchase program authorizing up to $125.0 million of our outstanding shares of common stock to be repurchased. On April 17, 2015, the Board authorized up to an additional $50.0 million of our outstanding shares of common stock to be repurchased, for a total of $175.0 million under the share repurchase program. 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. The following table presents share repurchase activities during the years ended December 31, 2017, 2016 and 2015 information (In thousands, except per share data): For the Years Ended December 31, 2017 2016 2015 Shares repurchased under share repurchase program: Number of shares repurchased 248 429 1,671 Aggregate purchase price $ 7,338 $ 10,815 $ 61,023 Average price per repurchased share (1) $ 29.58 $ 25.20 $ 36.51 Other shares repurchased (2) Number of shares repurchased 34 16 21 Aggregate purchase price $ 1,024 $ 467 $ 777 Average price per repurchased share (1) $ 30.40 $ 29.41 $ 36.21 (1) The weighted average price paid per share of common stock does not include the cost of commissions. (2) 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. Approximately $70.8 million is available for repurchase under our authorized repurchase program as of December 31, 2017.

Restructuring Costs

Restructuring Costs	12 Months Ended
	Dec. 31, 2017
Restructuring And Related Activities [Abstract]
Restructuring Costs	(13) Restructuring Costs We have undergone restructuring actions to align our business operations. The restructuring costs in 2017 resulted primarily to the continuation of projects initiated in prior years. Integration of ETS into the existing Mobile Mini infrastructure For the twelve months ended December 31, 2017, 2016 and 2015, we recognized $1.3 million, $2.0 million, and $19.7 million, respectively, in expenses related to activities associated with the integration of ETS into the existing Mobile Mini infrastructure. The integration has included such activities as: • Combining Storage Solutions and Tank & Pump Solutions locations in markets where both lines of business are present, • Expanding either line of business to new geographies where we maintain a presence in the other, • Eliminating duplicative or redundant positions at both the corporate level and in operations, and • Determining the appropriate processes, including the alignment of sales leadership with operational leadership, and eliminating infrastructure that does not function optimally in the new environment. As part of the integration process, in 2015, as the Company was finalizing locations in Southern California for combined Storage Solutions and Tank & Pump Solutions equipment operations, we determined that certain of our current locations in Southern California would either not be optimal or available to accommodate efficient operations and provide desired proximity to our combined customer base. To accommodate the needs of the planned combined operations, the Company is leasing new property, exiting certain properties and has abandoned approximately 5,000 units of the portable storage fleet in Southern California at the legacy yards. This abandonment resulted in $13.7 million of restructuring expense in the fourth quarter of 2015, representing the write-down of this fleet to zero value. Other costs related to performance of the integration included $0.2 million, $0.5 million and $4.6 million for severance and benefits, for the years ended December 31, 2017, 2016 and 2015, respectively. Included in the severance and benefits for the years ended December 31, 2016 and 2015 was $0.2 million and $1.6 million of share-based compensation, respectively. In 2015, we also recognized $1.4 million for the write-off and loss on sale of property, plant and equipment, related to the integration. Other restructuring We recognized $0.9 million, $3.3 million and $0.8 million during the twelve months ended December 31, 2017, 2016 and 2015, respectively, related to the abandonment of yards, or portions of yards, as well as related fleet and other costs due to our move away from the wood mobile office business. The remaining costs in each year related largely to divisional and corporate departmental restructurings. The following table details accrued restructuring obligations (included in accrued liabilities in the Consolidated Balance Sheets) and related activity for the years ended December 31, 2017, 2016 and 2015: Fleet and Property, Plant and Equipment Abandonment Costs Severance and Benefits Lease Abandonment Costs Other Costs Total (In thousands) Accrued obligations as of January 1, 2015 $ — $ 441 $ 676 $ — $ 1,117 Restructuring expense 15,274 4,846 600 78 20,798 Settlement of obligations (15,274 ) (4,042 ) (781 ) (76 ) (20,173 ) Accrued obligations as of December 31, 2015 — 1,245 495 2 1,742 Restructuring expense 109 1,006 3,453 1,452 6,020 Settlement of obligations (109 ) (1,856 ) (3,580 ) (1,454 ) (6,999 ) Accrued obligations as of December 31, 2016 — 395 368 — 763 Restructuring expense — 931 900 1,055 2,886 Settlement of obligations — (787 ) (1,086 ) (1,019 ) (2,892 ) Accrued obligations as of December 31, 2017 $ — $ 539 $ 182 $ 36 $ 757 The following amounts are included in restructuring expense for the years ended December 31: 2017 2016 2015 (In thousands) Fleet and property, plant and equipment abandonment costs $ — $ 109 $ 15,274 Severance and benefits 931 1,006 4,846 Lease abandonment costs 900 3,453 600 Other costs 1,055 1,452 78 Restructuring expenses $ 2,886 $ 6,020 $ 20,798 We expect to recognize less than $500,000 in restructuring expenses related to these restructurings in 2018.

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Segment Reporting	(14) Segment Reporting Our operations are comprised of three reportable segments: Storage Solutions North America, Storage Solutions United Kingdom and Tank & Pump Solutions. Discrete financial data on each of our products is not available and it would be impractical to collect and maintain financial data in such a manner. The results for each segment are reviewed discretely by our chief operating decision maker. We operate in the U.S., U.K. and Canada. All of our locations operate in their local currency and, although we are exposed to foreign exchange rate fluctuation in foreign markets where we rent and sell our products, we do not believe such exposure will have a significant impact on our results of operations. Revenues recognized by our U.S. locations were $444.7 million, $424.4 million and $438.4 million for the twelve months ended December 31, 2017, 2016 and 2015, respectively. The following tables set forth certain information regarding each of our reportable segments for the years ended December 31, 2017, 2016 and 2015: For the Year Ended December 31, 2017 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 329,248 $ 77,342 $ 406,590 $ 92,235 $ 498,825 Sales 19,016 7,973 26,989 5,451 32,440 Other 1,430 445 1,875 409 2,284 Total revenues 349,694 85,760 435,454 98,095 533,549 Costs and expenses: Rental, selling and general expenses 217,718 50,295 268,013 68,425 336,438 Cost of sales 11,534 6,396 17,930 3,071 21,001 Restructuring expenses 2,674 — 2,674 212 2,886 Depreciation and amortization 31,735 7,057 38,792 24,580 63,372 Total costs and expenses 263,661 63,748 327,409 96,288 423,697 Income from operations $ 86,033 $ 22,012 $ 108,045 $ 1,807 $ 109,852 Interest expense, net of interest income $ 24,385 $ 501 $ 24,886 $ 10,817 $ 35,703 Income tax (benefit) provision (52,886 ) 2,045 (50,841 ) 2,737 (48,104 ) Capital expenditures for additions to rental fleet, excluding acquisitions 45,043 11,405 56,448 7,240 63,688 For the Year Ended December 31, 2016 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 309,221 $ 77,924 $ 387,145 $ 92,938 $ 480,083 Sales 18,852 2,724 21,576 4,923 26,499 Other 1,530 310 1,840 200 2,040 Total revenues 329,603 80,958 410,561 98,061 508,622 Costs and expenses: Rental, selling and general expenses 197,440 48,096 245,536 63,758 309,294 Cost of sales 11,248 2,071 13,319 3,152 16,471 Restructuring expenses 5,419 — 5,419 601 6,020 Depreciation and amortization 28,722 6,787 35,509 28,225 63,734 Total costs and expenses 242,829 56,954 299,783 95,736 395,519 Income from operations $ 86,774 $ 24,004 $ 110,778 $ 2,325 $ 113,103 Interest expense, net of interest income $ 20,920 $ 536 $ 21,456 $ 11,268 $ 32,724 Income tax provision (benefit) 22,687 2,921 25,608 (3,958 ) 21,650 Capital expenditures for additions to rental fleet, excluding acquisitions 32,270 10,851 43,121 14,251 57,372 For the Year Ended December 31, 2015 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 310,864 $ 84,227 $ 395,091 $ 99,624 $ 494,715 Sales 18,833 3,554 22,387 7,566 29,953 Other 5,697 340 6,037 72 6,109 Total revenues 335,394 88,121 423,515 107,262 530,777 Costs and expenses: Rental, selling and general expenses 210,323 53,423 263,746 62,506 326,252 Cost of sales 11,852 2,728 14,580 5,091 19,671 Restructuring expenses 17,790 — 17,790 3,008 20,798 Asset impairment charge, net 66,128 — 66,128 — 66,128 Depreciation and amortization 28,200 6,628 34,828 25,516 60,344 Total costs and expenses 334,293 62,779 397,072 96,121 493,193 Income from operations $ 1,101 $ 25,342 $ 26,443 $ 11,141 $ 37,584 Interest expense, net of interest income $ 24,249 $ 876 $ 25,125 $ 10,774 $ 35,899 Income tax (benefit) provision (8,639 ) 3,369 (5,270 ) 448 (4,822 ) Capital expenditures for additions to rental fleet, excluding acquisitions 28,532 22,154 50,686 24,046 74,732 Assets related to our reportable segments include the following: Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) As of December 31, 2017: Goodwill $ 468,785 $ 58,906 $ 527,691 $ 181,216 $ 708,907 Intangibles, net 1,314 642 1,956 60,068 62,024 Rental fleet, net 714,154 156,413 870,567 118,587 989,154 As of December 31, 2016: Goodwill $ 468,464 $ 53,878 $ 522,342 $ 181,216 $ 703,558 Intangibles, net 1,959 899 2,858 65,562 68,420 Rental fleet, net 688,477 137,383 825,860 124,205 950,065 Included in the Consolidated Balance Sheets are long-lived assets other than property, plant and equipment in the U.S. of $1.5 billion as of both December 31, 2017 and 2016.

Selected Consolidated Quarterly

Selected Consolidated Quarterly Financial Data	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Selected Consolidated Quarterly Financial Data	(15) Selected Consolidated Quarterly Financial Data (unaudited) The following table sets forth certain unaudited selected consolidated financial information for each of the four quarters in the years ended December 31, 2017 and 2016. In management’s opinion, this unaudited consolidated quarterly selected information has been prepared on the same basis as the audited consolidated financial statements and includes all necessary adjustments, consisting only of normal recurring adjustments, which management considers necessary for a fair presentation when read in conjunction with the Consolidated Financial Statements and notes. We believe these comparisons of consolidated quarterly selected financial data are not necessarily indicative of future performance. Quarterly EPS may not total to the fiscal year EPS due to the weighted average number of shares outstanding at the end of each period reported and rounding. First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) 2017 Rental revenue $ 114,742 $ 117,851 $ 127,695 $ 138,537 Total revenues 123,527 126,690 136,636 146,696 Income from operations 23,893 22,152 26,812 36,995 Net income 10,152 8,777 11,228 92,071 Earnings per share: Basic 0.23 0.20 0.25 2.09 Diluted 0.23 0.20 0.25 2.07 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) 2016 Rental revenue $ 117,356 $ 116,773 $ 121,784 $ 124,170 Total revenues 124,533 124,849 128,853 130,387 Income from operations 26,195 25,541 26,667 34,700 Net income 10,998 4,072 12,709 19,469 Earnings per share: Basic 0.25 0.09 0.29 0.44 Diluted 0.25 0.09 0.29 0.44

Condensed Consolidating Financi

Condensed Consolidating Financial Information for Guarantors	12 Months Ended
	Dec. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Condensed Consolidating Financial Information for Guarantors	(16) Condensed Consolidating Financial Information for Guarantors The following tables reflect the condensed consolidating financial information of our subsidiary guarantors of the Senior Notes and our 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 customer exceptions, and management has determined that such information is not material to investors. CONDENSED CONSOLIDATING BALANCE SHEETS As of December 31, 2017 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated ASSETS Cash and cash equivalents $ 803 $ 12,648 $ — $ 13,451 Receivables, net 91,624 19,938 — 111,562 Inventories 13,471 2,200 — 15,671 Rental fleet, net 823,997 165,157 — 989,154 Property, plant and equipment, net 133,919 23,385 — 157,304 Other assets 13,324 2,010 — 15,334 Intangibles, net 61,360 664 — 62,024 Goodwill 645,126 63,781 — 708,907 Intercompany receivables 145,855 4,806 (150,661 ) — Total assets $ 1,929,479 $ 294,589 $ (150,661 ) $ 2,073,407 LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities: Accounts payable $ 21,004 $ 5,951 $ — $ 26,955 Accrued liabilities 71,298 6,786 — 78,084 Lines of credit 634,285 — — 634,285 Obligations under capital leases 52,648 143 — 52,791 Senior Notes 245,850 — — 245,850 Deferred income taxes 153,345 20,409 — 173,754 Intercompany payables 1,437 1,225 (2,662 ) — Total liabilities 1,179,867 34,514 (2,662 ) 1,211,719 Commitments and contingencies Stockholders' equity: Common stock 497 — — 497 Additional paid-in capital 605,369 147,999 (147,999 ) 605,369 Retained earnings 290,912 172,410 — 463,322 Accumulated other comprehensive loss — (60,334 ) — (60,334 ) Treasury stock, at cost (147,166 ) — — (147,166 ) Total stockholders' equity 749,612 260,075 (147,999 ) 861,688 Total liabilities and stockholders' equity $ 1,929,479 $ 294,589 $ (150,661 ) $ 2,073,407 CONDENSED CONSOLIDATING BALANCE SHEETS As of December 31, 2016 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated ASSETS Cash and cash equivalents $ 1,260 $ 2,877 $ — $ 4,137 Receivables, net 80,476 18,699 — 99,175 Inventories 14,526 886 — 15,412 Rental fleet, net 803,553 146,512 — 950,065 Property, plant and equipment, net 129,458 19,739 — 149,197 Other assets 13,189 1,741 — 14,930 Intangibles, net 67,487 933 — 68,420 Goodwill 645,126 58,432 — 703,558 Intercompany receivables 146,016 4,513 (150,529 ) — Total assets $ 1,901,091 $ 254,332 $ (150,529 ) $ 2,004,894 LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities: Accounts payable $ 20,218 $ 7,170 $ — $ 27,388 Accrued liabilities 57,025 7,101 — 64,126 Lines of credit 640,975 185 — 641,160 Obligations under capital leases 50,507 197 — 50,704 Senior Notes 245,212 — — 245,212 Deferred income taxes 224,212 16,478 — 240,690 Intercompany payables 384 2,146 (2,530 ) — Total liabilities 1,238,533 33,277 (2,530 ) 1,269,280 Commitments and contingencies Stockholders' equity: Common stock 493 — — 493 Additional paid-in capital 592,071 147,999 (147,999 ) 592,071 Retained earnings 208,793 154,103 — 362,896 Accumulated other comprehensive loss — (81,047 ) — (81,047 ) Treasury stock, at cost (138,799 ) — — (138,799 ) Total stockholders' equity 662,558 221,055 (147,999 ) 735,614 Total liabilities and stockholders' equity $ 1,901,091 $ 254,332 $ (150,529 ) $ 2,004,894 CONDENSED CONSOLIDATING STATEMENTS OF INCOME For the Year Ended December 31, 2017 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 418,590 $ 80,235 $ — $ 498,825 Sales 24,265 8,175 — 32,440 Other 1,829 455 — 2,284 Total revenues 444,684 88,865 — 533,549 Costs and expenses: Rental, selling and general expenses 283,490 52,948 — 336,438 Cost of sales 14,464 6,537 — 21,001 Restructuring expenses 2,886 — — 2,886 Depreciation and amortization 55,976 7,396 — 63,372 Total costs and expenses 356,816 66,881 — 423,697 Income from operations 87,868 21,984 — 109,852 Other income (expense): Interest income 10,616 9 (10,600 ) 25 Interest expense (45,819 ) (509 ) 10,600 (35,728 ) Foreign currency exchange — (25 ) — (25 ) Income before income tax provision 52,665 21,459 — 74,124 Income tax (benefit) provision (51,256 ) 3,152 (48,104 ) Net income $ 103,921 $ 18,307 $ — $ 122,228 CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2017 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net income $ 103,921 $ 18,307 $ — $ 122,228 Other comprehensive income: Foreign currency translation adjustment, net of income tax provision of $30 — 20,713 — 20,713 Other comprehensive income — 20,713 — 20,713 Comprehensive income $ 103,921 $ 39,020 $ — $ 142,941 CONDENSED CONSOLIDATING STATEMENTS OF INCOME For the Year Ended December 31, 2016 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 399,200 $ 80,883 $ — $ 480,083 Sales 23,509 2,990 — 26,499 Other 1,718 322 — 2,040 Total revenues 424,427 84,195 — 508,622 Costs and expenses: Rental, selling and general expenses 258,799 50,495 — 309,294 Cost of sales 14,228 2,243 — 16,471 Restructuring expenses 6,015 5 — 6,020 Depreciation and amortization 56,548 7,186 — 63,734 Total costs and expenses 335,590 59,929 — 395,519 Income from operations 88,837 24,266 — 113,103 Other income (expense): Interest income 10,613 2 (10,613 ) 2 Interest expense (42,662 ) (677 ) 10,613 (32,726 ) Debt extinguishment expense (9,192 ) — — (9,192 ) Deferred financing costs write-off (2,271 ) — — (2,271 ) Foreign currency exchange — (18 ) — (18 ) Income before income tax provision 45,325 23,573 — 68,898 Income tax provision 18,729 2,921 21,650 Net income $ 26,596 $ 20,652 $ — $ 47,248 CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2016 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net income $ 26,596 $ 20,652 $ — $ 47,248 Other comprehensive loss: Foreign currency translation adjustment, net of income tax provision of $106 — (36,885 ) — (36,885 ) Other comprehensive loss — (36,885 ) — (36,885 ) Comprehensive income (loss) $ 26,596 $ (16,233 ) $ — $ 10,363 CONDENSED CONSOLIDATING STATEMENTS OF INCOME For the Year Ended December 31, 2015 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 406,434 $ 88,281 $ — $ 494,715 Sales 26,157 3,796 — 29,953 Other 5,764 345 — 6,109 Total revenues 438,355 92,422 — 530,777 Costs and expenses: Rental, selling and general expenses 269,893 56,359 — 326,252 Cost of sales 16,781 2,890 — 19,671 Restructuring expenses 20,798 — — 20,798 Asset impairment charge and loss on divestiture, net 66,110 18 — 66,128 Depreciation and amortization 53,260 7,084 — 60,344 Total costs and expenses 426,842 66,351 — 493,193 Income from operations 11,513 26,071 — 37,584 Other income (expense): Interest income 10,640 — (10,639 ) 1 Interest expense (45,016 ) (1,523 ) 10,639 (35,900 ) Deferred financing costs write-off (931 ) — — (931 ) Foreign currency exchange — (2 ) — (2 ) (Loss) income from continuing operations before income tax (benefit) provision (23,794 ) 24,546 — 752 Income tax (benefit) provision (8,191 ) 3,369 — (4,822 ) Net (loss) income $ (15,603 ) $ 21,177 $ — $ 5,574 CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2015 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net (loss) income $ (15,603 ) $ 21,177 $ — $ 5,574 Other comprehensive loss: Foreign currency translation adjustment, net of income tax benefit of $184 — (14,292 ) — (14,292 ) Other comprehensive loss — (14,292 ) — (14,292 ) Comprehensive (loss) income $ (15,603 ) $ 6,885 $ — $ (8,718 ) CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2017 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash Flows from Operating Activities: Net income $ 103,921 $ 18,307 $ — $ 122,228 Adjustments to reconcile net income to net cash provided by operating activities: Provision for doubtful accounts 4,446 591 — 5,037 Amortization of deferred financing costs 2,060 — — 2,060 Amortization of long-term liabilities 130 — — 130 Share-based compensation expense 7,083 290 — 7,373 Depreciation and amortization 55,976 7,396 — 63,372 Gain on sale of rental fleet (5,319 ) (338 ) — (5,657 ) Loss on disposal of property, plant and equipment 140 377 — 517 Deferred income taxes (52,248 ) 2,268 — (49,980 ) Foreign currency transaction loss — 25 — 25 Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables (15,595 ) (82 ) — (15,677 ) Inventories 1,056 (1,146 ) — (90 ) Other assets (578 ) (57 ) — (635 ) Accounts payable (2,939 ) (2,046 ) — (4,985 ) Accrued liabilities 12,917 (989 ) — 11,928 Intercompany 503 (503 ) — — Net cash provided by operating activities 111,553 24,093 — 135,646 Cash Flows from Investing Activities: Additions to rental fleet, excluding acquisitions (52,115 ) (11,573 ) — (63,688 ) Proceeds from sale of rental fleet 11,432 1,521 — 12,953 Additions to property, plant and equipment, excluding acquisitions (14,672 ) (5,450 ) — (20,122 ) Proceeds from sale of property, plant and equipment 149 702 — 851 Net cash used in investing activities (55,206 ) (14,800 ) — (70,006 ) Cash Flows from Financing Activities: Net repayments under lines of credit (6,690 ) (185 ) — (6,875 ) Deferred financing costs (12 ) — — (12 ) Principal payments on capital lease obligations (7,364 ) (54 ) — (7,418 ) Issuance of common stock 5,800 — — 5,800 Dividend payments (40,171 ) — — (40,171 ) Purchase of treasury stock (8,367 ) — — (8,367 ) Net cash used in financing activities (56,804 ) (239 ) — (57,043 ) Effect of exchange rate changes on cash — 717 — 717 Net (decrease) increase in cash (457 ) 9,771 — 9,314 Cash and cash equivalents at beginning of year 1,260 2,877 — 4,137 Cash and cash equivalents at end of year $ 803 $ 12,648 $ — $ 13,451 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2016 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash Flows from Operating Activities: Net income $ 26,596 $ 20,652 $ — $ 47,248 Adjustments to reconcile net income to net cash provided by operating activities: Debt extinguishment expense 9,192 — — 9,192 Deferred financing costs write-off 2,271 — — 2,271 Provision for doubtful accounts 5,498 664 — 6,162 Amortization of deferred financing costs 1,968 8 — 1,976 Amortization of long-term liabilities 116 — — 116 Share-based compensation expense 7,126 273 — 7,399 Depreciation and amortization 56,548 7,186 — 63,734 Gain on sale of rental fleet (5,014 ) (458 ) — (5,472 ) Loss on disposal of property, plant and equipment 1,131 154 — 1,285 Deferred income taxes 18,713 2,921 — 21,634 Tax shortfall on equity award transactions (242 ) — — (242 ) Foreign currency transaction loss — 18 — 18 Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables (23,543 ) (3,778 ) — (27,321 ) Inventories (302 ) 900 — 598 Other assets 105 (45 ) — 60 Accounts payable (930 ) 1,169 — 239 Accrued liabilities 7,227 120 — 7,347 Intercompany 776 (776 ) — — Net cash provided by operating activities 107,236 29,008 — 136,244 Cash Flows from Investing Activities: Cash paid for businesses acquired, net of cash acquired (9,206 ) (7,359 ) — (16,565 ) Additions to rental fleet, excluding acquisitions (46,471 ) (10,901 ) — (57,372 ) Proceeds from sale of rental fleet 11,976 1,703 — 13,679 Additions to property, plant and equipment, excluding acquisitions (22,402 ) (8,257 ) — (30,659 ) Proceeds from sale of property, plant and equipment 2,053 711 — 2,764 Net cash used in investing activities (64,050 ) (24,103 ) — (88,153 ) Cash Flows from Financing Activities: Net repayments under lines of credit (24,775 ) (1,773 ) — (26,548 ) Proceeds from issuance of 5.875% senior notes due 2024 250,000 — — 250,000 Redemption of 7.875% senior notes due 2020 (200,000 ) — — (200,000 ) Debt extinguishment expense (9,192 ) — — (9,192 ) Deferred financing costs (5,369 ) — — (5,369 ) Principal payments on capital lease obligations (6,399 ) (121 ) — (6,520 ) Issuance of common stock 468 — — 468 Dividend payments (36,402 ) — — (36,402 ) Purchase of treasury stock (11,290 ) — — (11,290 ) Net cash used in financing activities (42,959 ) (1,894 ) — (44,853 ) Effect of exchange rate changes on cash — (714 ) — (714 ) Net increase in cash 227 2,297 — 2,524 Cash and cash equivalents at beginning of year 1,033 580 — 1,613 Cash and cash equivalents at end of year $ 1,260 $ 2,877 $ — $ 4,137 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash Flows from Operating Activities: Net (loss) income (15,603 ) 21,177 — $ 5,574 Adjustments to reconcile net (loss) income to net cash provided by operating activities: Deferred financing costs write-off 931 — — 931 Asset impairment charge and loss on divestiture, net 66,110 18 66,128 Non-cash restructuring expense, excluding share-based compensation 12,411 — — 12,411 Provision for doubtful accounts 3,065 640 — 3,705 Amortization of deferred financing costs 3,073 58 — 3,131 Amortization of long-term liabilities 99 2 — 101 Share-based compensation expense 13,426 401 — 13,827 Depreciation and amortization 53,260 7,084 — 60,344 Gain on sale of rental fleet (5,934 ) (468 ) — (6,402 ) Loss on disposal of property, plant and equipment 1,873 315 — 2,188 Deferred income taxes (8,832 ) 3,203 — (5,629 ) Tax shortfall on equity award transactions (166 ) — — (166 ) Foreign currency transaction loss — 2 — 2 Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables (3,345 ) (839 ) — (4,184 ) Inventories 1,032 (87 ) — 945 Other assets (2 ) (853 ) — (855 ) Accounts payable 6,156 (1,551 ) — 4,605 Accrued liabilities (3,823 ) (19 ) — (3,842 ) Intercompany 1,305 (1,305 ) — — Net cash provided by operating activities 125,036 27,778 — 152,814 Cash Flows from Investing Activities: Proceeds from wood mobile office divestiture, net 83,252 28 — 83,280 Cash paid for businesses acquired, net of cash acquired (17,325 ) (1,200 ) — (18,525 ) Additions to rental fleet, excluding acquisitions (52,366 ) (22,366 ) — (74,732 ) Proceeds from sale of rental fleet 14,777 2,088 — 16,865 Additions to property, plant and equipment, excluding acquisitions (25,231 ) (5,932 ) — (31,163 ) Proceeds from sale of property, plant and equipment 8,985 875 — 9,860 Net cash provided by (used in) investing activities 12,092 (26,507 ) — (14,415 ) Cash Flows from Financing Activities: Net repayments under lines of credit (36,386 ) (1,424 ) — (37,810 ) Deferred financing costs (4,683 ) — (4,683 ) Principal payments on capital lease obligations (4,173 ) (80 ) — (4,253 ) Issuance of common stock 1,703 — — 1,703 Dividend payments (33,700 ) — — (33,700 ) Purchase of treasury stock (61,833 ) — — (61,833 ) Net cash used in financing activities (139,072 ) (1,504 ) — (140,576 ) Effect of exchange rate changes on cash — 51 — 51 Net decrease in cash (1,944 ) (182 ) — (2,126 ) Cash and cash equivalents at beginning of year 2,977 762 — 3,739 Cash and cash equivalents at end of year $ 1,033 $ 580 $ — $ 1,613

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	(17) Subsequent Events On January 31, 2018, the Board authorized and declared a cash dividend to all our common stockholders of $0.250 per share of common stock, payable on March 14, 2018 to stockholders of record as of the close of business February 28, 2018. Each future quarterly dividend payment is subject to review and approval by the Board.

Mobile Mini, Organization and27

Mobile Mini, Organization and Description of Business (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation The consolidated financial statements include the accounts of Mobile Mini and our wholly owned subsidiaries. We do not have any subsidiaries in which we do not own 100% of the outstanding stock. All significant intercompany balances and transactions have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“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. Significant estimates affect the calculation of depreciation and amortization, the calculation of the allowance for doubtful accounts, the analysis of goodwill and long-lived assets for potential impairment and certain accrued liabilities.
Cash Equivalents	Cash Equivalents We consider all highly liquid instruments with insignificant interest rate risk and with maturities of three months or less at purchase to be cash equivalents.
Receivables and Allowance for Doubtful Accounts	Receivables and Allowance for Doubtful Accounts Receivables are stated net of an allowance for doubtful accounts. We estimate the amount of customer receivables that are uncollectible and record an estimated provision for bad debts through a charge to operations. The provision is based on historical collection experience and evaluation of past-due accounts. Specific accounts are written off against the allowance when management determines the account is uncollectible. We require a security deposit on most leased office units to cover the cost of damages or unpaid balances, if any. Our provision for doubtful accounts was less than 1.5% of total revenues in the years ended December 31, 2017, 2016 and 2015. The information presented in the table below reflects the activity in the allowance for doubtful accounts during the periods presented. For the Years Ended December 31, 2017 2016 2015 (In thousands) Balance at beginning of year $ 4,886 $ 2,162 $ 1,636 Provision charged to expense 5,037 6,162 3,705 Write-offs and other (3,673 ) (3,438 ) (3,179 ) Balance at end of year $ 6,250 $ 4,886 $ 2,162
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments which potentially expose us to concentrations of credit risk consist primarily of receivables. Concentration of credit risk with respect to receivables is limited due to our large number of customers spread over a broad geographic area in many industry sectors. We typically have the right to repossess rented portable storage units, including any customer goods contained in the unit, following non-payment of rent. Receivables related to sold units are generally secured by the product sold to the customer. Our largest customer accounted for approximately 4.5% of our consolidated rental revenue for the year ended December 31, 2017, and 16.7% of our total receivables at December 31, 2017. These receivables generally fluctuate throughout the year depending upon seasonal demand but are typically higher at year end following the seasonal holiday business.
Inventories	Inventories Inventories are valued at the lower of cost (principally on a standard cost basis which approximates the first-in, first-out method) or net realizable value. Raw materials and supplies principally consist of raw steel, 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 Tank & Pump Solutions segment. Work-in-process primarily represents partially assembled units. Finished 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 December 31 consisted of the following: 2017 2016 (In thousands) Raw materials and supplies $ 11,732 $ 12,908 Work-in-process 50 31 Finished units 3,889 2,473 Inventories $ 15,671 $ 15,412
Rental fleet	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. We periodically review depreciable lives and residual values against various factors, including the results of our lenders’ independent appraisal of our rental fleet, practices of our competitors in comparable industries and profit margins achieved on sales of depreciated units.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at cost, net of accumulated depreciation and amortization. Depreciation is recorded using the straight-line method over the assets’ estimated useful lives. Our depreciation expense related to property, plant and equipment for 2017, 2016 and 2015 was $25.9 million, $25.1 million and $20.2 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 Income. Property, plant and equipment at December 31 consisted of the following: Residual Value as Percentage of Original Cost Useful Life in Years 2017 2016 (In thousands) Land $ 2,970 $ 3,789 Vehicles and machinery 0 - 55% 5 - 30 151,937 131,584 Buildings and improvements (1) 0 - 25 3 - 30 25,079 22,750 Furniture, office and computer equipment 0 3 - 10 73,416 63,969 Property, plant and equipment 253,402 222,092 Accumulated depreciation and amortization (96,098 ) (72,895 ) Property, plant and equipment, net $ 157,304 $ 149,197 (1) Improvements made to leased properties are depreciated over the lesser of the estimated useful life or the remaining term of the respective lease
Capitalized Software Development Costs	Capitalized Software Development Costs We capitalize qualifying computer software costs incurred during the application development stage for internally developed software. Additionally, we capitalize qualifying costs incurred for upgrades and enhancements that result in additional functionality to existing software. Costs related to preliminary project planning activities, post-implementation activities, maintenance and minor modifications are expensed as incurred. Internal-use software is amortized on a straight line basis over its estimated useful life. Capitalized software development costs are included in property, plant and equipment in the Consolidated Balance Sheet. As of December 31, 2017 and 2016, we had $39.5 million and $35.0 million, respectively, of capitalized software, net of accumulated depreciation, included in property, plant and equipment.
Deferred Financing Costs	Deferred Financing Costs Deferred financing costs are included in other assets in the Consolidated Balance Sheets and consist of the costs of obtaining long-term financing. These costs are amortized over the term of the related debt, using the straight-line method, which approximates the effective interest method. Amortization expense for deferred financing costs was approximately $2.1 million, $2.0 million and $3.1 million in 2017, 2016 and 2015, respectively. As of December 31, 2017, $4.2 million and $4.2 million of the total $8.4 million unamortized deferred financing costs, related to the 2024 Notes and the Credit Agreement, respectively. The annual amortization of deferred financing costs is expected to be as follows (in thousands): 2018 $ 2,060 2019 2,060 2020 2,000 2021 638 2022 638 Thereafter 958 Total $ 8,354
Goodwill	Goodwill For acquired businesses, we record 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. Of the $708.9 million total goodwill at December 31, 2017, $468.8 million related to the North America Storage Solutions segment, $58.9 million related to the U.K. Storage Solutions segment and $181.2 million related to the Tank & Pump Solutions segment. Reporting units are consistent with segments. Goodwill impairment testing requires judgment, including: the identification of the reporting units; determination of the fair value of each reporting unit; the assignment of assets, liabilities and goodwill to each reporting unit; estimates and assumptions regarding future cash flows and discount rates; and an assumption regarding the form of the transaction in which the reporting unit would be acquired by a market participant. Management assesses potential impairment of goodwill on an annual basis at December 31, or whenever events or changes in circumstances indicate that the carrying value may not be recoverable. We have determined that the reporting units are consistent with our identified segments. Some factors management considers important which could indicate an impairment review include the following: • significant under-performance relative to historical, expected or projected future operating results; • significant changes in the manner of our use of the acquired assets or the strategy for the overall business; • market capitalization relative to net book value; and • significant negative industry or general economic trends. Management may choose to assess qualitative factors to determine if it is more-likely-than-not that goodwill might be impaired and whether or not to perform the two-step goodwill impairment test. When we review goodwill for impairment utilizing a two-step process, the first step of the impairment test requires a comparison of the fair value of each of our reporting unit’s net assets to the respective carrying value of net assets. If the carrying value of a reporting unit’s net assets is less than its fair value, no indication of impairment exists and a second step is not performed. If the carrying amount of a reporting unit’s net assets is higher than its fair value, there is an indication that an impairment may exist and a second step must be performed. If the second step is necessary, management is required to determine the implied fair value of the goodwill and compare it to the carrying value of the goodwill. The fair value of the reporting units would be assigned to the respective assets and liabilities of each reporting unit as if the reporting units had been acquired in separate and individual business combinations and the fair value of the reporting units was the price paid to acquire the reporting units. The excess of the fair value of the reporting units over the amounts assigned to their respective assets and liabilities is the implied fair value of goodwill. If the carrying amount of the reporting unit’s goodwill is greater than the implied fair value of its goodwill, an impairment loss must be recognized for the difference. When assessing the fair value of the reporting units under the two-step impairment test, management considers both the market approach and the income approach. Under the market approach, the fair value of the reporting unit is based on quoted market prices of companies comparable to the reporting unit being valued. Under the income approach, the fair value of the reporting unit is based on the present value of estimated cash flows. The income approach is dependent on a number of significant management assumptions, including estimated future revenue growth rates and discount rates. Other estimates relate to tax payments, operating margins and capital expenditures. Each approach is given equal weight in arriving at the fair value of the reporting unit. As of December 31, 2017 and 2016, management assessed qualitative factors and determined it is more likely than not each of the reporting unit’s assigned goodwill had estimated fair values greater than the respective reporting unit’s individual net asset carrying values; therefore, the two step impairment test was not performed. In connection with our goodwill impairment test that was conducted as of December 31, 2015, we chose to perform the first step of the goodwill impairment test for each of our reporting units. Our goodwill impairment testing as of this date indicated that both of our Storage Solutions reporting units and our Tank & Pump Solutions reporting unit had estimated fair values which substantially exceeded their respective carrying amounts. The second step of the impairment test was not required for any of the reporting units. The following table shows the activity and balances related to goodwill from January 1, 2016 to December 31, 2017: (In thousands) Balance at January 1, 2016 (1) $ 706,387 Acquisitions 6,449 Adjustments 1,071 Foreign currency (2) (10,349 ) Balance at December 31, 2016 (1) 703,558 Acquisitions — Adjustments 18 Foreign currency (2) 5,331 Balance at December 31, 2017 (1) $ 708,907 (1) Includes accumulated amortization of $2.0 million and accumulated impairment of $12.5 million. (2) Represents foreign currency translation adjustments related to the U.K. portable storage reporting unit.
Intangibles	Intangibles 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 are amortized based on the estimated attrition rates of the underlying customer base, other intangibles are amortized using the straight-line method. The following table reflects balances related to intangible assets for the years ended December 31: 2017 2016 Estimated Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) Customer relationships 15 - 20 $ 93,235 $ (34,660 ) $ 58,575 $ 92,515 $ (28,729 ) $ 63,786 Trade names/trademarks 5 - 10 5,954 (3,312 ) 2,642 5,892 (2,364 ) 3,528 Non-compete agreements 5 1,890 (1,114 ) 776 1,886 (813 ) 1,073 Other 20 60 (29 ) 31 59 (26 ) 33 Total $ 101,139 $ (39,115 ) $ 62,024 $ 100,352 $ (31,932 ) $ 68,420 Amortization expense for amortizable intangibles was approximately $6.5 million, $6.4 million and $6.0 million in 2017, 2016 and 2015, respectively. See information regarding intangibles acquired in conjunction with company acquisitions in Note 3. Based on the carrying value at December 31, 2017, future amortization of intangible assets is expected to be as follows for the years ended December 31 (in thousands): 2018 $ 6,485 2019 6,271 2020 5,147 2021 4,909 2022 4,608 Thereafter 34,604 Total $ 62,024
Impairment of Long-Lived Assets (Other than Goodwill)	Impairment of Long-Lived Assets (Other than Goodwill) Our rental fleet, property, plant and equipment, and finite-lived intangibles are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may be impaired. (See potential impairment indicators under “Goodwill” above). If this review indicates the carrying value of these assets will not be recoverable, as measured based on estimated undiscounted cash flows over their remaining life, the carrying amount would be adjusted to fair value. The cash flow estimates contain management’s best estimates using appropriate and customary assumptions and projections at the time of evaluation. During the first quarter of 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 and we conducted a review for impairment for these long-lived assets as of March 31, 2015. Based on this review, an impairment loss was recorded in the quarter ended March 31, 2015. The total impairment of the wood mobile offices was $64.6 million during 2015. See additional discussion regarding the impairment and the divestiture of the wood mobile offices in Note 4. There were no indicators of further impairment at December 31, 2017 or at December 31, 2016.
Purchase Accounting	Purchase Accounting We account for acquisitions under the acquisition method. Under the acquisition method of accounting, we record assets acquired and liabilities assumed at their estimated fair market value on the date of acquisition. Goodwill is measured as the excess of the fair value of the consideration transferred over the fair value of the identifiable net assets. Estimated fair values of acquired assets and liabilities is provisional and could change as additional information is received. We finalize valuations as soon as practicable, but not later than one-year from the acquisition date. Any subsequent changes to purchase price allocations results in a corresponding adjustment to goodwill. The determination of the fair value of intangible assets requires the use of significant judgment with regard to (i) the fair value; and (ii) whether such intangibles are amortizable or non-amortizable and, if amortizable, the period and the method by which the intangible asset will be amortized. We estimate the fair value of acquisition-related intangible assets principally based on projections of cash flows that will arise from identifiable intangible assets of acquired businesses. The projected cash flows are discounted to determine the present value of the assets at the dates of acquisition.
Revenue Recognition	Revenue Recognition Rental revenue is generated from the direct rental of our fleet to our customers, including ancillary revenue such as fleet delivery and pickup. We enter into contracts with our customers to rent equipment based on a monthly rate for our Storage Solutions fleet and a daily, weekly or monthly rate for our Tank & Pump Solutions fleet. Revenues from renting are recognized ratably over the rental period. The rental continues until cancelled by the customer or the Company. Customers may utilize our equipment delivery and pick-up services in conjunction with the rental of equipment, but it is not required. Revenue pursuant to the pick up or delivery of a rented unit is recognized in rental revenue upon completion of the service. When customers are billed in advance, we defer recognition of revenue and record unearned rental revenue at the end of the period. If equipment is returned prior to the end of the contractually obligated period, the excess, if any, between the amount the customer is contractually required to pay, over the cumulative amount of revenue recognized to date, is recognized as incremental revenue upon return. Sales revenue is primarily generated by the sale of new and used units, and to a lesser extent, parts and supplies sold to Tank & Pump Solutions customers. We recognize revenues from sales of units upon delivery when the risk of loss passes, the price is fixed and determinable and collectability is reasonably assured. We sell our units pursuant to sales contracts stating the fixed sales price.
Cost of Sales	Cost of Sales Cost of sales in our consolidated statements of income includes the costs for units we sell, and to a lesser extent the costs of parts and supplies sold to Tank & Pump Solutions customers. Similar costs associated with units that we rent are capitalized in the balance sheet under “Rental fleet”.
Advertising Costs	Advertising Costs Advertising expense was $4.0 million, $3.9 million and $4.1 million in 2017, 2016 and 2015, respectively. The balance of prepaid advertising costs, which are never amortized more than twelve months, was less than $0.1 million at both December 31, 2017 and 2016.
Income Taxes	Income Taxes In preparing our consolidated financial statements, we recognize income taxes in each of the jurisdictions in which we operate. For each jurisdiction, we estimate the actual amount of taxes currently payable or receivable as well as deferred tax assets and liabilities attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is provided for those deferred tax assets for which it is more likely than not that the related benefits will not be realized. In determining the amount of the valuation allowance, we consider estimated future taxable income as well as feasible tax planning strategies in each jurisdiction. If we determine that we will not realize all or a portion of our deferred tax assets, we will increase our valuation allowance with a charge to income tax expense. Conversely, if we determine that we will ultimately be able to realize all or a portion of the related benefits for which a valuation allowance has been provided, all or a portion of the related valuation allowance will be reduced with a credit to income tax expense. We record uncertain tax positions using a two-step process, whereby (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. The Company recognizes interest and penalties related to unrecognized tax benefits within the interest expense line and rental, selling and general expenses line, respectively, in the accompanying Consolidated Statements of Income. Accrued interest and penalties are included within the related liability lines in the Consolidated Balance Sheets. We have recorded certain income tax effects for the impact of the Tax Cuts and Jobs Act (the “Tax Act”) which was enacted on December 22, 2017 in those situations where we have all information necessary. Additionally, we have recorded a provisional effect where we could reasonably estimate the effect of the Tax Act. We will finalize the provisional amounts within one year from the date of enactment. See additional information regarding income taxes in Note 7.
Earnings per Share	Earnings per Share Basic earnings per share (“EPS”) is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Restricted stock awards are subject to the risk of forfeiture and are not included in the calculation of basic weighted average number of common shares outstanding until vested. Diluted EPS is calculated under the treasury stock method. Potential common shares included restricted common stock and incremental shares of common stock issuable upon the exercise of stock options. The following table is a reconciliation of net income and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted EPS for the years ended December 31: For the Years Ended December 31, 2017 2016 2015 (In thousands, except per share data) Numerator: Net income $ 122,228 $ 47,248 $ 5,574 Denominator: Weighted average shares outstanding - basic 44,055 44,145 44,953 Dilutive effect of share-based awards 199 245 507 Weighted average shares outstanding - diluted 44,254 44,390 45,460 Earnings per share: Basic $ 2.77 $ 1.07 $ 0.12 Diluted 2.76 1.06 0.12 The following table represents the number of stock options and restricted stock awards that were issued or outstanding but excluded in calculating diluted EPS because their effect would have been anti-dilutive, or the underlying performance criteria has not been met, for the years ended December 31: For the Years Ended December 31, 2017 2016 2015 (In thousands) Stock options 2,078 2,076 1,135 Restricted stock awards 2 5 1 Total 2,080 2,081 1,136
Fair Value Measurements	Fair Value Measurements Fair value is 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 determined by assumptions that market participants would use in pricing an asset or liability. We categorize each of our fair value measurements in one of the following three levels based on the lowest level of input that is significant to the fair value measurement: 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 December 31, 2017 and 2016, we did not have any financial instruments required to be recorded at fair value on a recurring basis. The carrying amounts of cash, cash equivalents, receivables, accounts payable and accrued liabilities approximate fair values based on their short-term nature. The fair values of our revolving credit facility and capital leases are estimated using discounted cash flow analyses, based on our current incremental borrowing rates for similar types of borrowing arrangements. Based on the borrowing rates currently available to us for bank loans with similar terms and average maturities, the fair value of our revolving credit facility debt and capital leases, which are measured using Level 2 inputs, at December 31, 2017 and 2016 approximated their respective book values. The fair value of our $250 million aggregate principal amount of 5.875% senior notes due July 1, 2024 (the “Senior Notes” or “2024 Notes”) is based on their latest sales price at the end of each period obtained from a third-party institution and is Level 2 in the fair value hierarchy as there is not an active market for these Senior Notes. The Senior Notes are presented on the balance sheet net of debt issuance costs. The gross carrying value and the fair value of the Senior Notes are as follows: 2017 2016 (In thousands) Carrying value $ 250,000 $ 250,000 Fair value 262,500 258,750
Derivatives	Derivatives In the normal course of business, our operations are exposed to fluctuations in interest rates. We have in the past, and may again in the future, address a portion of these risks through a controlled program of risk management that includes the use of derivative financial instruments. The objective of controlling these risks is to limit the impact of fluctuations in interest rates on earnings. At December 31, 2017 and 2016, we did not have any derivative financial instruments.
Share-Based Compensation	Share-Based Compensation We calculate the fair value of stock options using the Black-Scholes-Merton option pricing valuation model, which incorporates various assumptions including volatility, expected life and risk-free interest rates. The fair value of restricted stock awards is estimated as the closing price of our common stock on the date of grant. Compensation related to service-based awards are recognized on a straight-line basis over the vesting period, which is generally three to five years. Compensation expense related to performance-based awards is recognized over the implicit service period of the award based on management’s estimate of the probability of the performance criteria being satisfied, adjusted at each balance sheet date. Expense related to performance-based awards that have multiple vesting dates, is recognized using the accelerated attribution approach, whereby each vesting tranche is treated as a separate award for purposes of determining the implicit service period. Share based compensation expense is reduced for forfeitures when they occur.
Foreign Currency Translation and Transactions	Foreign Currency Translation and Transactions For our non-U.S. operations, the local currency is the functional currency. All assets and liabilities are translated into U.S. dollars at period-end exchange rates and all income statement amounts are translated at the average exchange rate for each month within the year.
Impact of Recently Issued Accounting Standards	Impact of Recently Issued Accounting Standards Tax Reform. During December 2017, the Financial Accounting Standards Board (the “FASB”) released Staff Accounting Bulletin No. 118 (the “Bulletin”) which provides accounting guidance regarding accounting for income taxes for the reporting period that includes the enactment of the Tax Act. The Bulletin provides guidance in those situations where the accounting for certain income tax effects of the Tax Act will be incomplete by the time financial statements are issued for the reporting period that includes the enactment date. For those elements of the Tax Act that cannot be reasonably estimated, no effect will be recorded. The staff has provided in the Bulletin that in situations where the accounting is incomplete for certain effects of the Tax Act, a measurement period which begins in the reporting period that includes the enactment of the Tax Act and ends when the entity has obtained, prepared and analyzed the information needed in order to complete the accounting requirements. The measurement period shall not exceed one year from enactment. Please refer to the significant accounting policies for income taxes above in this footnote, as well as Note 7 for additional information. Share-Based Compensation – Modifications . In May 2017, the FASB issued a standard which clarifies what constitutes a modification of a share-based payment award. This standard is effective for annual and interim periods beginning after December 15, 2017. We will implement this standard on January 1, 2018 and apply the guidance prospectively to modifications after that date. Business Combinations . In January 2017, the FASB issued a standard which clarifies the definition of a business and provides a new framework for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This standard is effective for annual and interim periods beginning after December 15, 2017. We will implement this standard on January 1, 2018 and will apply the guidance prospectively to future transactions. Intangibles – Goodwill and Other. In January 2017, the FASB issued a standard requiring an entity to no longer perform a hypothetical purchase price allocation to measure goodwill impairment. Instead, impairment will be measured using the difference between the carrying amount and the fair value of the reporting unit. This standard is effective for annual and interim periods beginning after December 15, 2019. Entities may early adopt the guidance for goodwill impairment tests with measurement dates after January 1, 2017. We have not determined an adoption date and do not expect the adoption of this standard to have a material effect on our consolidated financial statements. Share-Based Compensation. In March 2016, the FASB issued a standard intended to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. We implemented this standard on January 1, 2017. This standard eliminates the requirement that excess tax benefits be realized before companies can recognize them. As a result, utilizing the modified retrospective method, we recorded a cumulative-effect adjustment for previously unrecognized excess tax benefits of $18.5 million in the opening balance sheet for 2017, with an offsetting increase to retained earnings. In addition, the standard allows us to make a policy election to either continue to reduce share-based compensation expense for forfeitures in future periods, or to recognize forfeitures as they occur. We have chosen to record forfeitures as they occur and recorded an immaterial adjustment to reflect a cumulative-effect adjustment to the opening balance sheet for 2017 to reflect the difference between the fair value estimate of awards historically expected to be forfeited and the fair value estimate of awards actually forfeited. This standard also requires all excess tax benefits and tax deficiencies associated with the exercise of stock options and vesting of restricted stock to be recorded as income tax expense or benefit. Increases and decreases in the aggregate intrinsic value (or negative value) of such activity could introduce volatility in our effective tax rate. The remaining provisions of the new guidance did not have a material effect on our consolidated financial statements. Leases . In February 2016, the FASB issued a standard on lease accounting requiring a lessee to recognize assets and liabilities on the balance sheet for leases with lease terms greater than 12 months. This standard is effective for annual and interim periods beginning after December 15, 2018. Early adoption is permitted and the standard requires the use of a modified retrospective transition method. While we are continuing to evaluate all potential impacts of the standard, we do not believe the accounting for our contractual rental revenue will be materially affected by the adoption of this standard. We anticipate the lessee accounting for operating leases under the standard will have a material effect on our statement of financial position and are in the process of evaluating our portfolio of leases. Additionally, this standard requires expanded disclosures regarding information about the nature of our leases including, among other things, a general description of our leases, lease expense by type of lease, variable lease payments, the weighted-average remaining lease term and the weighted-average discount rate. Revenue from Contracts with Customers. In May 2014, the FASB issued an 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 and is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted for the annual and interim periods beginning after December 15, 2016, but not prior to that time. The revenue recognition standard permits the use of either the retrospective or cumulative effect transition method. We will adopt this standard on January 1, 2018. The majority of our revenue, as it relates to contractual rental revenue, is excluded from the scope of this standard, and the accounting for the remaining revenue streams will not be materially affected. Accordingly, we do not anticipate that the adoption of this standard will have a material impact on our consolidated financial statements. This standard also requires expanded disclosure related to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. We will utilize the modified retrospective adoption and recognize the cumulative effect of initially applying the standard. We are finalizing our analysis but at this time do not expect a cumulative adjustment to the opening balance of retained earnings at the date of initial application. Future periodic filings will include expanded disclosure as required, including disaggregation of revenue.
Income Tax Uncertainties, Policy	Uncertain tax positions are recognized and measured using a two-step approach. 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 process, 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	Our operations are comprised of three reportable segments: Storage Solutions North America, Storage Solutions United Kingdom and Tank & Pump Solutions. Discrete financial data on each of our products is not available and it would be impractical to collect and maintain financial data in such a manner. The results for each segment are reviewed discretely by our chief operating decision maker. We operate in the U.S., U.K. and Canada. All of our locations operate in their local currency and, although we are exposed to foreign exchange rate fluctuation in foreign markets where we rent and sell our products, we do not believe such exposure will have a significant impact on our results of operations. Revenues recognized by our U.S. locations were $444.7 million, $424.4 million and $438.4 million for the twelve months ended December 31, 2017, 2016 and 2015, respectively.

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Schedule of Allowance for Doubtful Accounts	The information presented in the table below reflects the activity in the allowance for doubtful accounts during the periods presented. For the Years Ended December 31, 2017 2016 2015 (In thousands) Balance at beginning of year $ 4,886 $ 2,162 $ 1,636 Provision charged to expense 5,037 6,162 3,705 Write-offs and other (3,673 ) (3,438 ) (3,179 ) Balance at end of year $ 6,250 $ 4,886 $ 2,162
Inventories	Inventories at December 31 consisted of the following: 2017 2016 (In thousands) Raw materials and supplies $ 11,732 $ 12,908 Work-in-process 50 31 Finished units 3,889 2,473 Inventories $ 15,671 $ 15,412
Property, Plant and Equipment	Property, plant and equipment at December 31 consisted of the following: Residual Value as Percentage of Original Cost Useful Life in Years 2017 2016 (In thousands) Land $ 2,970 $ 3,789 Vehicles and machinery 0 - 55% 5 - 30 151,937 131,584 Buildings and improvements (1) 0 - 25 3 - 30 25,079 22,750 Furniture, office and computer equipment 0 3 - 10 73,416 63,969 Property, plant and equipment 253,402 222,092 Accumulated depreciation and amortization (96,098 ) (72,895 ) Property, plant and equipment, net $ 157,304 $ 149,197 (1) Improvements made to leased properties are depreciated over the lesser of the estimated useful life or the remaining term of the respective lease
Schedule of Expected Annual Amortization of Deferred Financing Cost	The annual amortization of deferred financing costs is expected to be as follows (in thousands): 2018 $ 2,060 2019 2,060 2020 2,000 2021 638 2022 638 Thereafter 958 Total $ 8,354
Activity and Balances Relating to Goodwill	The following table shows the activity and balances related to goodwill from January 1, 2016 to December 31, 2017: (In thousands) Balance at January 1, 2016 (1) $ 706,387 Acquisitions 6,449 Adjustments 1,071 Foreign currency (2) (10,349 ) Balance at December 31, 2016 (1) 703,558 Acquisitions — Adjustments 18 Foreign currency (2) 5,331 Balance at December 31, 2017 (1) $ 708,907 (1) Includes accumulated amortization of $2.0 million and accumulated impairment of $12.5 million. (2) Represents foreign currency translation adjustments related to the U.K. portable storage reporting unit.
Balances Related to Intangible Assets	The following table reflects balances related to intangible assets for the years ended December 31: 2017 2016 Estimated Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) Customer relationships 15 - 20 $ 93,235 $ (34,660 ) $ 58,575 $ 92,515 $ (28,729 ) $ 63,786 Trade names/trademarks 5 - 10 5,954 (3,312 ) 2,642 5,892 (2,364 ) 3,528 Non-compete agreements 5 1,890 (1,114 ) 776 1,886 (813 ) 1,073 Other 20 60 (29 ) 31 59 (26 ) 33 Total $ 101,139 $ (39,115 ) $ 62,024 $ 100,352 $ (31,932 ) $ 68,420
Schedule of Expected Future Amortization of Intangible Assets	Based on the carrying value at December 31, 2017, future amortization of intangible assets is expected to be as follows for the years ended December 31 (in thousands): 2018 $ 6,485 2019 6,271 2020 5,147 2021 4,909 2022 4,608 Thereafter 34,604 Total $ 62,024
Reconciliation of Net 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 income and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted EPS for the years ended December 31: For the Years Ended December 31, 2017 2016 2015 (In thousands, except per share data) Numerator: Net income $ 122,228 $ 47,248 $ 5,574 Denominator: Weighted average shares outstanding - basic 44,055 44,145 44,953 Dilutive effect of share-based awards 199 245 507 Weighted average shares outstanding - diluted 44,254 44,390 45,460 Earnings per share: Basic $ 2.77 $ 1.07 $ 0.12 Diluted 2.76 1.06 0.12
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 restricted stock awards that were issued or outstanding but excluded in calculating diluted EPS because their effect would have been anti-dilutive, or the underlying performance criteria has not been met, for the years ended December 31: For the Years Ended December 31, 2017 2016 2015 (In thousands) Stock options 2,078 2,076 1,135 Restricted stock awards 2 5 1 Total 2,080 2,081 1,136
Gross Carrying and Fair Value of Senior Notes	The Senior Notes are presented on the balance sheet net of debt issuance costs. The gross carrying value and the fair value of the Senior Notes are as follows: 2017 2016 (In thousands) Carrying value $ 250,000 $ 250,000 Fair value 262,500 258,750

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2017
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 year ended December 31, 2016 (as adjusted in 2017) are as follows (in thousands): Net Assets Acquired: Cash $ 1,562 Rental fleet 10,054 Property, plant and equipment 285 Intangible assets: Customer relationships 1,616 Non-compete agreements 50 Goodwill 6,467 Other assets 1,218 Other liabilities (3,125 ) Total $ 18,127 Total, less cash acquired $ 16,565 The components of the purchase price and net assets acquired during the year ended December 31, 2015 (as adjusted in 2016) are as follows (in thousands): Net Assets Acquired: Rental fleet $ 11,057 Property, plant and equipment 157 Intangible assets: Customer relationships 759 Non-compete agreements 74 Goodwill 6,443 Other assets 316 Other liabilities (281 ) Total $ 18,525

Impairment and Divestiture of30

Impairment and Divestiture of North American Wood Mobile Offices (Tables)	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Schedule of Impairment and Divestiture	For the twelve months ended December 31, 2015, the following amounts were recorded for the impairment and divestiture of the wood mobile office fleet: (In thousands) Estimated fair market value $ 92,000 Net book value: Wood mobile offices in rental fleet 155,429 Ancillary items in property, plant and equipment 1,201 Impairment loss $ (64,630 ) Sale price $ 92,000 Book value of divested assets after impairment 92,000 Selling expenses 1,498 Net loss on sale of wood mobile offices $ (1,498 ) Asset impairment charge and loss on divestiture, net $ (66,128 )

Rental Fleet (Tables)

Rental Fleet (Tables)	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Rental Fleet	Rental fleet at December 31 consisted of the following: Residual Value as Percentage of Original Cost (1) Useful Life in Years 2017 2016 (In thousands) Storage Solutions: Steel storage containers 55% 30 $ 655,553 $ 625,094 Steel ground level offices 55% 30 374,836 347,574 Other 8,290 4,430 Total 1,038,679 977,098 Accumulated depreciation (168,112 ) (151,238 ) Total Storage Solutions fleet, net $ 870,567 $ 825,860 Tank & Pump Solutions: Steel tanks 25 $ 64,254 $ 61,955 Roll-off boxes 15 - 20 29,897 28,743 Stainless steel tank trailers 25 28,871 29,150 Vacuum boxes 20 12,700 11,512 De-watering boxes 20 6,361 5,429 Pumps and filtration equipment 7 12,680 13,690 Other 7,088 6,150 Total 161,851 156,629 Accumulated depreciation (43,264 ) (32,424 ) Total Tank & Pump Solutions fleet, net $ 118,587 $ 124,205 Total rental fleet, net $ 989,154 $ 950,065 (1) Tank & Pump Solutions fleet has been assigned zero residual value.

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Future Minimum Capital Lease Payments	Future minimum capital lease payments at December 31, 2017 are as follows (in thousands): 2018 $ 9,316 2019 9,364 2020 10,449 2021 9,981 2022 8,483 Thereafter 9,086 Total 56,679 Amount representing interest (3,888 ) Present value of minimum lease payments $ 52,791
Scheduled Maturity for Debt Obligations	The scheduled maturity for debt obligations for balances outstanding at December 31, 2017 are as follows: Lines of Credit Senior Notes Capital Lease Obligations Total (In thousands) 2018 $ — $ — $ 8,143 $ 8,143 2019 — — 8,393 8,393 2020 634,285 — 9,690 643,975 2021 — — 9,462 9,462 2022 — — 8,182 8,182 Thereafter — 250,000 8,921 258,921 Total $ 634,285 $ 250,000 $ 52,791 $ 937,076

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income (Loss) Before Taxes from Continuing Operations	Income (loss) before taxes from continuing operations for the years ended December 31 consisted of the following: For the Years Ended December 31, 2017 2016 2015 (In thousands) U.S. $ 52,609 $ 45,430 $ (23,750 ) Foreign 21,515 23,468 24,502 Total $ 74,124 $ 68,898 $ 752
Provision for Income Taxes from Continuing Operations	The provision for income taxes from continuing operations for the years ended December 31 consisted of the following: For the Years Ended December 31, 2017 2016 2015 (In thousands) Current: U.S. federal $ — $ (1,124 ) $ 1,124 State 990 1,093 326 Foreign 886 — — Total current 1,876 (31 ) 1,450 Deferred U.S. federal (59,257 ) 16,628 (8,549 ) State 7,000 1,215 (1,190 ) Foreign 2,277 3,838 3,467 Total deferred (49,980 ) 21,681 (6,272 ) Total (benefit) provision for income taxes $ (48,104 ) $ 21,650 $ (4,822 )
Reconciliation of U.S. Federal Statutory Rate to Effective Tax Rate	A reconciliation of the U.S. federal statutory rate to our effective tax rate for the years ended December 31 is as follows: For the Years Ended December 31, 2017 2016 2015 U.S. federal statutory rate 35.0 % 35.0 % 35.0 % State taxes, net of federal benefit 4.5 1.6 (222.4 ) Nondeductible expenses and other 0.1 1.1 128.1 U.S. mandatory repatriation 4.2 — — Adjustment of net deferred tax liability for enacted tax rate change (104.7 ) 0.2 (97.6 ) Foreign rate differential (4.0 ) (6.5 ) (484.3 ) Effective tax rate (64.9 ) % 31.4 % (641.2 ) %
Net Deferred Tax Liability	The components of the net deferred tax liability at December 31 are approximately as follows: 2017 2016 (In thousands) Deferred tax assets: Net operating loss carryforwards $ 44,228 $ 71,126 Deferred revenue and expenses 8,435 11,050 Accrued compensation and other benefits 4,118 2,465 Allowance for doubtful accounts 1,532 2,026 Equity compensation 7,092 10,937 Capital leases 12,999 18,984 Other 1,456 513 Total deferred tax assets 79,860 117,101 Valuation allowance (1,126 ) (1,126 ) Net deferred tax assets 78,734 115,975 Deferred tax liabilities Fixed assets (218,605 ) (309,010 ) Intangibles and goodwill (33,165 ) (46,585 ) Other (718 ) (1,070 ) Total deferred tax liabilities (252,488 ) (356,665 ) Net deferred tax liabilities $ (173,754 ) $ (240,690 )
Summary of Reconciliation of Unrecognized Tax Benefits	A reconciliation of the beginning and ending balance of unrecognized tax benefits is as follows: 2017 2016 (In thousands) Beginning balance $ 5,874 $ — Additions based on tax positions related to the current year — — Additions for tax positions of prior years 8,266 5,874 Ending balance $ 14,140 $ 5,874

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Share-Based Compensation Expense	The following table summarizes our share-based compensation for the years ended December 31: For the Years Ended December 31, 2017 2016 2015 (In thousands) Share-based compensation expense included in: Rental, selling and general expenses $ 7,255 $ 7,220 $ 12,277 Restructuring expenses 118 179 1,550 Total share-based compensation $ 7,373 $ 7,399 $ 13,827
Key Assumptions Used to Estimate Fair Value of Stock Options Granted	The following are the key assumptions used for the period noted: 2017 2016 2015 Risk-free interest rate 1.7% - 2.1% 1.1% - 1.5% 1.3% - 1.7% Expected life of the options (years) 5.0 5.0 5.0 Expected stock price volatility 32.9% - 35.3% - 35.3% - Expected dividend rate 2.5% - 3.1% 2.2% - 3.1% 1.8% - 2.1%
Stock Option Activity	The following table summarizes stock option activity for the years ended December 31 (share amounts in thousands): 2017 2016 2015 Number of Shares Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price Options outstanding, beginning of year 3,292 $ 32.06 2,870 $ 33.40 2,649 $ 32.33 Granted 462 32.44 594 26.54 381 42.80 Canceled/Expired (352 ) 33.43 (155 ) 36.07 (98 ) 44.60 Exercised (233 ) 24.88 (17 ) 28.50 (62 ) 27.56 Options outstanding, end of year 3,169 32.49 3,292 32.06 2,870 33.40 Options exercisable, end of year 2,429 2,508 1,643
Fully Vested Stock Options and Stock Options Expected to Vest	A summary of stock options outstanding as of December 31, 2017, 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 3,169 $ 32.49 6.11 $ 11,568 Exercisable 2,429 32.84 5.36 8,554
Restricted Stock Activity	A summary of restricted stock activity is as follows (share amounts in thousands): Shares Weighted Average Grant Date Fair Value Restricted stock awards at January 1, 2015 343 $ 27.99 Awarded 107 37.17 Released (169 ) 28.22 Forfeited (39 ) 25.07 Restricted stock awards at December 31, 2015 242 31.70 Awarded 172 27.39 Released (130 ) 29.75 Forfeited (41 ) 28.36 Restricted stock awards at December 31, 2016 243 30.27 Awarded 163 32.25 Released (142 ) 30.39 Forfeited (30 ) 31.53 Restricted stock awards at December 31, 2017 234 31.42

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Contractual Commitments Associated with Lease Obligations	As of December 31, 2017, contractual commitments associated with lease obligations are as follows: Operating Lease Commitments Restructuring Related Lease Commitments Total (In thousands) 2018 $ 17,664 $ 307 $ 17,971 2019 14,794 26 14,820 2020 12,516 — 12,516 2021 10,369 — 10,369 2022 9,016 — 9,016 Thereafter 24,603 — 24,603 Total $ 88,962 $ 333 $ 89,295

Stockholders' Equity (Table)

Stockholders' Equity (Table)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Schedule of Dividends Authorized and Declared Cash Dividends to Common Stockholders	During the twelve months ended December 31, 2017 we paid cash dividends of $0.91 per share for a total of $40.2 million. Each future quarterly dividend payment is subject to review and approval by the Board. In addition, our Credit Agreement contains restrictions on the declaration and payment of dividends. Declaration Date Payment Date Record Date (close of business) Dividend Amount Per Share of Common Stock January 31, 2017 March 15, 2017 March 1, 2017 $ 0.227 April 26, 2017 May 31, 2017 May 17, 2017 0.227 July 18, 2017 August 30, 2017 August 16, 2017 0.227 October 18, 2017 November 29, 2017 November 15, 2017 0.227
Schedule of Share Repurchase Activities	The following table presents share repurchase activities during the years ended December 31, 2017, 2016 and 2015 information (In thousands, except per share data): For the Years Ended December 31, 2017 2016 2015 Shares repurchased under share repurchase program: Number of shares repurchased 248 429 1,671 Aggregate purchase price $ 7,338 $ 10,815 $ 61,023 Average price per repurchased share (1) $ 29.58 $ 25.20 $ 36.51 Other shares repurchased (2) Number of shares repurchased 34 16 21 Aggregate purchase price $ 1,024 $ 467 $ 777 Average price per repurchased share (1) $ 30.40 $ 29.41 $ 36.21 (1) The weighted average price paid per share of common stock does not include the cost of commissions. (2) 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.

Restructuring Costs (Tables)

Restructuring Costs (Tables)	12 Months Ended
	Dec. 31, 2017
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 years ended December 31, 2017, 2016 and 2015: Fleet and Property, Plant and Equipment Abandonment Costs Severance and Benefits Lease Abandonment Costs Other Costs Total (In thousands) Accrued obligations as of January 1, 2015 $ — $ 441 $ 676 $ — $ 1,117 Restructuring expense 15,274 4,846 600 78 20,798 Settlement of obligations (15,274 ) (4,042 ) (781 ) (76 ) (20,173 ) Accrued obligations as of December 31, 2015 — 1,245 495 2 1,742 Restructuring expense 109 1,006 3,453 1,452 6,020 Settlement of obligations (109 ) (1,856 ) (3,580 ) (1,454 ) (6,999 ) Accrued obligations as of December 31, 2016 — 395 368 — 763 Restructuring expense — 931 900 1,055 2,886 Settlement of obligations — (787 ) (1,086 ) (1,019 ) (2,892 ) Accrued obligations as of December 31, 2017 $ — $ 539 $ 182 $ 36 $ 757
Restructuring Expense	The following amounts are included in restructuring expense for the years ended December 31: 2017 2016 2015 (In thousands) Fleet and property, plant and equipment abandonment costs $ — $ 109 $ 15,274 Severance and benefits 931 1,006 4,846 Lease abandonment costs 900 3,453 600 Other costs 1,055 1,452 78 Restructuring expenses $ 2,886 $ 6,020 $ 20,798

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Segment Reporting	The following tables set forth certain information regarding each of our reportable segments for the years ended December 31, 2017, 2016 and 2015: For the Year Ended December 31, 2017 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 329,248 $ 77,342 $ 406,590 $ 92,235 $ 498,825 Sales 19,016 7,973 26,989 5,451 32,440 Other 1,430 445 1,875 409 2,284 Total revenues 349,694 85,760 435,454 98,095 533,549 Costs and expenses: Rental, selling and general expenses 217,718 50,295 268,013 68,425 336,438 Cost of sales 11,534 6,396 17,930 3,071 21,001 Restructuring expenses 2,674 — 2,674 212 2,886 Depreciation and amortization 31,735 7,057 38,792 24,580 63,372 Total costs and expenses 263,661 63,748 327,409 96,288 423,697 Income from operations $ 86,033 $ 22,012 $ 108,045 $ 1,807 $ 109,852 Interest expense, net of interest income $ 24,385 $ 501 $ 24,886 $ 10,817 $ 35,703 Income tax (benefit) provision (52,886 ) 2,045 (50,841 ) 2,737 (48,104 ) Capital expenditures for additions to rental fleet, excluding acquisitions 45,043 11,405 56,448 7,240 63,688 For the Year Ended December 31, 2016 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 309,221 $ 77,924 $ 387,145 $ 92,938 $ 480,083 Sales 18,852 2,724 21,576 4,923 26,499 Other 1,530 310 1,840 200 2,040 Total revenues 329,603 80,958 410,561 98,061 508,622 Costs and expenses: Rental, selling and general expenses 197,440 48,096 245,536 63,758 309,294 Cost of sales 11,248 2,071 13,319 3,152 16,471 Restructuring expenses 5,419 — 5,419 601 6,020 Depreciation and amortization 28,722 6,787 35,509 28,225 63,734 Total costs and expenses 242,829 56,954 299,783 95,736 395,519 Income from operations $ 86,774 $ 24,004 $ 110,778 $ 2,325 $ 113,103 Interest expense, net of interest income $ 20,920 $ 536 $ 21,456 $ 11,268 $ 32,724 Income tax provision (benefit) 22,687 2,921 25,608 (3,958 ) 21,650 Capital expenditures for additions to rental fleet, excluding acquisitions 32,270 10,851 43,121 14,251 57,372 For the Year Ended December 31, 2015 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 310,864 $ 84,227 $ 395,091 $ 99,624 $ 494,715 Sales 18,833 3,554 22,387 7,566 29,953 Other 5,697 340 6,037 72 6,109 Total revenues 335,394 88,121 423,515 107,262 530,777 Costs and expenses: Rental, selling and general expenses 210,323 53,423 263,746 62,506 326,252 Cost of sales 11,852 2,728 14,580 5,091 19,671 Restructuring expenses 17,790 — 17,790 3,008 20,798 Asset impairment charge, net 66,128 — 66,128 — 66,128 Depreciation and amortization 28,200 6,628 34,828 25,516 60,344 Total costs and expenses 334,293 62,779 397,072 96,121 493,193 Income from operations $ 1,101 $ 25,342 $ 26,443 $ 11,141 $ 37,584 Interest expense, net of interest income $ 24,249 $ 876 $ 25,125 $ 10,774 $ 35,899 Income tax (benefit) provision (8,639 ) 3,369 (5,270 ) 448 (4,822 ) Capital expenditures for additions to rental fleet, excluding acquisitions 28,532 22,154 50,686 24,046 74,732
Assets Segments	Assets related to our reportable segments include the following: Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) As of December 31, 2017: Goodwill $ 468,785 $ 58,906 $ 527,691 $ 181,216 $ 708,907 Intangibles, net 1,314 642 1,956 60,068 62,024 Rental fleet, net 714,154 156,413 870,567 118,587 989,154 As of December 31, 2016: Goodwill $ 468,464 $ 53,878 $ 522,342 $ 181,216 $ 703,558 Intangibles, net 1,959 899 2,858 65,562 68,420 Rental fleet, net 688,477 137,383 825,860 124,205 950,065

Selected Consolidated Quarter39

Selected Consolidated Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Unaudited Selected Consolidated Financial Information	Quarterly EPS may not total to the fiscal year EPS due to the weighted average number of shares outstanding at the end of each period reported and rounding. First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) 2017 Rental revenue $ 114,742 $ 117,851 $ 127,695 $ 138,537 Total revenues 123,527 126,690 136,636 146,696 Income from operations 23,893 22,152 26,812 36,995 Net income 10,152 8,777 11,228 92,071 Earnings per share: Basic 0.23 0.20 0.25 2.09 Diluted 0.23 0.20 0.25 2.07 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) 2016 Rental revenue $ 117,356 $ 116,773 $ 121,784 $ 124,170 Total revenues 124,533 124,849 128,853 130,387 Income from operations 26,195 25,541 26,667 34,700 Net income 10,998 4,072 12,709 19,469 Earnings per share: Basic 0.25 0.09 0.29 0.44 Diluted 0.25 0.09 0.29 0.44

Condensed Consolidating Finan40

Condensed Consolidating Financial Information for Guarantors (Tables)	12 Months Ended
	Dec. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Condensed Consolidating Balance Sheets	The following tables reflect the condensed consolidating financial information of our subsidiary guarantors of the Senior Notes and our 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 customer exceptions, and management has determined that such information is not material to investors. CONDENSED CONSOLIDATING BALANCE SHEETS As of December 31, 2017 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated ASSETS Cash and cash equivalents $ 803 $ 12,648 $ — $ 13,451 Receivables, net 91,624 19,938 — 111,562 Inventories 13,471 2,200 — 15,671 Rental fleet, net 823,997 165,157 — 989,154 Property, plant and equipment, net 133,919 23,385 — 157,304 Other assets 13,324 2,010 — 15,334 Intangibles, net 61,360 664 — 62,024 Goodwill 645,126 63,781 — 708,907 Intercompany receivables 145,855 4,806 (150,661 ) — Total assets $ 1,929,479 $ 294,589 $ (150,661 ) $ 2,073,407 LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities: Accounts payable $ 21,004 $ 5,951 $ — $ 26,955 Accrued liabilities 71,298 6,786 — 78,084 Lines of credit 634,285 — — 634,285 Obligations under capital leases 52,648 143 — 52,791 Senior Notes 245,850 — — 245,850 Deferred income taxes 153,345 20,409 — 173,754 Intercompany payables 1,437 1,225 (2,662 ) — Total liabilities 1,179,867 34,514 (2,662 ) 1,211,719 Commitments and contingencies Stockholders' equity: Common stock 497 — — 497 Additional paid-in capital 605,369 147,999 (147,999 ) 605,369 Retained earnings 290,912 172,410 — 463,322 Accumulated other comprehensive loss — (60,334 ) — (60,334 ) Treasury stock, at cost (147,166 ) — — (147,166 ) Total stockholders' equity 749,612 260,075 (147,999 ) 861,688 Total liabilities and stockholders' equity $ 1,929,479 $ 294,589 $ (150,661 ) $ 2,073,407 CONDENSED CONSOLIDATING BALANCE SHEETS As of December 31, 2016 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated ASSETS Cash and cash equivalents $ 1,260 $ 2,877 $ — $ 4,137 Receivables, net 80,476 18,699 — 99,175 Inventories 14,526 886 — 15,412 Rental fleet, net 803,553 146,512 — 950,065 Property, plant and equipment, net 129,458 19,739 — 149,197 Other assets 13,189 1,741 — 14,930 Intangibles, net 67,487 933 — 68,420 Goodwill 645,126 58,432 — 703,558 Intercompany receivables 146,016 4,513 (150,529 ) — Total assets $ 1,901,091 $ 254,332 $ (150,529 ) $ 2,004,894 LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities: Accounts payable $ 20,218 $ 7,170 $ — $ 27,388 Accrued liabilities 57,025 7,101 — 64,126 Lines of credit 640,975 185 — 641,160 Obligations under capital leases 50,507 197 — 50,704 Senior Notes 245,212 — — 245,212 Deferred income taxes 224,212 16,478 — 240,690 Intercompany payables 384 2,146 (2,530 ) — Total liabilities 1,238,533 33,277 (2,530 ) 1,269,280 Commitments and contingencies Stockholders' equity: Common stock 493 — — 493 Additional paid-in capital 592,071 147,999 (147,999 ) 592,071 Retained earnings 208,793 154,103 — 362,896 Accumulated other comprehensive loss — (81,047 ) — (81,047 ) Treasury stock, at cost (138,799 ) — — (138,799 ) Total stockholders' equity 662,558 221,055 (147,999 ) 735,614 Total liabilities and stockholders' equity $ 1,901,091 $ 254,332 $ (150,529 ) $ 2,004,894
Condensed Consolidating Statements of Income	CONDENSED CONSOLIDATING STATEMENTS OF INCOME For the Year Ended December 31, 2017 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 418,590 $ 80,235 $ — $ 498,825 Sales 24,265 8,175 — 32,440 Other 1,829 455 — 2,284 Total revenues 444,684 88,865 — 533,549 Costs and expenses: Rental, selling and general expenses 283,490 52,948 — 336,438 Cost of sales 14,464 6,537 — 21,001 Restructuring expenses 2,886 — — 2,886 Depreciation and amortization 55,976 7,396 — 63,372 Total costs and expenses 356,816 66,881 — 423,697 Income from operations 87,868 21,984 — 109,852 Other income (expense): Interest income 10,616 9 (10,600 ) 25 Interest expense (45,819 ) (509 ) 10,600 (35,728 ) Foreign currency exchange — (25 ) — (25 ) Income before income tax provision 52,665 21,459 — 74,124 Income tax (benefit) provision (51,256 ) 3,152 (48,104 ) Net income $ 103,921 $ 18,307 $ — $ 122,228 CONDENSED CONSOLIDATING STATEMENTS OF INCOME For the Year Ended December 31, 2016 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 399,200 $ 80,883 $ — $ 480,083 Sales 23,509 2,990 — 26,499 Other 1,718 322 — 2,040 Total revenues 424,427 84,195 — 508,622 Costs and expenses: Rental, selling and general expenses 258,799 50,495 — 309,294 Cost of sales 14,228 2,243 — 16,471 Restructuring expenses 6,015 5 — 6,020 Depreciation and amortization 56,548 7,186 — 63,734 Total costs and expenses 335,590 59,929 — 395,519 Income from operations 88,837 24,266 — 113,103 Other income (expense): Interest income 10,613 2 (10,613 ) 2 Interest expense (42,662 ) (677 ) 10,613 (32,726 ) Debt extinguishment expense (9,192 ) — — (9,192 ) Deferred financing costs write-off (2,271 ) — — (2,271 ) Foreign currency exchange — (18 ) — (18 ) Income before income tax provision 45,325 23,573 — 68,898 Income tax provision 18,729 2,921 21,650 Net income $ 26,596 $ 20,652 $ — $ 47,248 CONDENSED CONSOLIDATING STATEMENTS OF INCOME For the Year Ended December 31, 2015 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 406,434 $ 88,281 $ — $ 494,715 Sales 26,157 3,796 — 29,953 Other 5,764 345 — 6,109 Total revenues 438,355 92,422 — 530,777 Costs and expenses: Rental, selling and general expenses 269,893 56,359 — 326,252 Cost of sales 16,781 2,890 — 19,671 Restructuring expenses 20,798 — — 20,798 Asset impairment charge and loss on divestiture, net 66,110 18 — 66,128 Depreciation and amortization 53,260 7,084 — 60,344 Total costs and expenses 426,842 66,351 — 493,193 Income from operations 11,513 26,071 — 37,584 Other income (expense): Interest income 10,640 — (10,639 ) 1 Interest expense (45,016 ) (1,523 ) 10,639 (35,900 ) Deferred financing costs write-off (931 ) — — (931 ) Foreign currency exchange — (2 ) — (2 ) (Loss) income from continuing operations before income tax (benefit) provision (23,794 ) 24,546 — 752 Income tax (benefit) provision (8,191 ) 3,369 — (4,822 ) Net (loss) income $ (15,603 ) $ 21,177 $ — $ 5,574
Condensed Consolidating Statements of Comprehensive Income (Loss)	CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2017 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net income $ 103,921 $ 18,307 $ — $ 122,228 Other comprehensive income: Foreign currency translation adjustment, net of income tax provision of $30 — 20,713 — 20,713 Other comprehensive income — 20,713 — 20,713 Comprehensive income $ 103,921 $ 39,020 $ — $ 142,941 CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2016 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net income $ 26,596 $ 20,652 $ — $ 47,248 Other comprehensive loss: Foreign currency translation adjustment, net of income tax provision of $106 — (36,885 ) — (36,885 ) Other comprehensive loss — (36,885 ) — (36,885 ) Comprehensive income (loss) $ 26,596 $ (16,233 ) $ — $ 10,363 CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2015 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net (loss) income $ (15,603 ) $ 21,177 $ — $ 5,574 Other comprehensive loss: Foreign currency translation adjustment, net of income tax benefit of $184 — (14,292 ) — (14,292 ) Other comprehensive loss — (14,292 ) — (14,292 ) Comprehensive (loss) income $ (15,603 ) $ 6,885 $ — $ (8,718 )
Condensed Consolidating Statements of Cash Flows	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2017 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash Flows from Operating Activities: Net income $ 103,921 $ 18,307 $ — $ 122,228 Adjustments to reconcile net income to net cash provided by operating activities: Provision for doubtful accounts 4,446 591 — 5,037 Amortization of deferred financing costs 2,060 — — 2,060 Amortization of long-term liabilities 130 — — 130 Share-based compensation expense 7,083 290 — 7,373 Depreciation and amortization 55,976 7,396 — 63,372 Gain on sale of rental fleet (5,319 ) (338 ) — (5,657 ) Loss on disposal of property, plant and equipment 140 377 — 517 Deferred income taxes (52,248 ) 2,268 — (49,980 ) Foreign currency transaction loss — 25 — 25 Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables (15,595 ) (82 ) — (15,677 ) Inventories 1,056 (1,146 ) — (90 ) Other assets (578 ) (57 ) — (635 ) Accounts payable (2,939 ) (2,046 ) — (4,985 ) Accrued liabilities 12,917 (989 ) — 11,928 Intercompany 503 (503 ) — — Net cash provided by operating activities 111,553 24,093 — 135,646 Cash Flows from Investing Activities: Additions to rental fleet, excluding acquisitions (52,115 ) (11,573 ) — (63,688 ) Proceeds from sale of rental fleet 11,432 1,521 — 12,953 Additions to property, plant and equipment, excluding acquisitions (14,672 ) (5,450 ) — (20,122 ) Proceeds from sale of property, plant and equipment 149 702 — 851 Net cash used in investing activities (55,206 ) (14,800 ) — (70,006 ) Cash Flows from Financing Activities: Net repayments under lines of credit (6,690 ) (185 ) — (6,875 ) Deferred financing costs (12 ) — — (12 ) Principal payments on capital lease obligations (7,364 ) (54 ) — (7,418 ) Issuance of common stock 5,800 — — 5,800 Dividend payments (40,171 ) — — (40,171 ) Purchase of treasury stock (8,367 ) — — (8,367 ) Net cash used in financing activities (56,804 ) (239 ) — (57,043 ) Effect of exchange rate changes on cash — 717 — 717 Net (decrease) increase in cash (457 ) 9,771 — 9,314 Cash and cash equivalents at beginning of year 1,260 2,877 — 4,137 Cash and cash equivalents at end of year $ 803 $ 12,648 $ — $ 13,451 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2016 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash Flows from Operating Activities: Net income $ 26,596 $ 20,652 $ — $ 47,248 Adjustments to reconcile net income to net cash provided by operating activities: Debt extinguishment expense 9,192 — — 9,192 Deferred financing costs write-off 2,271 — — 2,271 Provision for doubtful accounts 5,498 664 — 6,162 Amortization of deferred financing costs 1,968 8 — 1,976 Amortization of long-term liabilities 116 — — 116 Share-based compensation expense 7,126 273 — 7,399 Depreciation and amortization 56,548 7,186 — 63,734 Gain on sale of rental fleet (5,014 ) (458 ) — (5,472 ) Loss on disposal of property, plant and equipment 1,131 154 — 1,285 Deferred income taxes 18,713 2,921 — 21,634 Tax shortfall on equity award transactions (242 ) — — (242 ) Foreign currency transaction loss — 18 — 18 Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables (23,543 ) (3,778 ) — (27,321 ) Inventories (302 ) 900 — 598 Other assets 105 (45 ) — 60 Accounts payable (930 ) 1,169 — 239 Accrued liabilities 7,227 120 — 7,347 Intercompany 776 (776 ) — — Net cash provided by operating activities 107,236 29,008 — 136,244 Cash Flows from Investing Activities: Cash paid for businesses acquired, net of cash acquired (9,206 ) (7,359 ) — (16,565 ) Additions to rental fleet, excluding acquisitions (46,471 ) (10,901 ) — (57,372 ) Proceeds from sale of rental fleet 11,976 1,703 — 13,679 Additions to property, plant and equipment, excluding acquisitions (22,402 ) (8,257 ) — (30,659 ) Proceeds from sale of property, plant and equipment 2,053 711 — 2,764 Net cash used in investing activities (64,050 ) (24,103 ) — (88,153 ) Cash Flows from Financing Activities: Net repayments under lines of credit (24,775 ) (1,773 ) — (26,548 ) Proceeds from issuance of 5.875% senior notes due 2024 250,000 — — 250,000 Redemption of 7.875% senior notes due 2020 (200,000 ) — — (200,000 ) Debt extinguishment expense (9,192 ) — — (9,192 ) Deferred financing costs (5,369 ) — — (5,369 ) Principal payments on capital lease obligations (6,399 ) (121 ) — (6,520 ) Issuance of common stock 468 — — 468 Dividend payments (36,402 ) — — (36,402 ) Purchase of treasury stock (11,290 ) — — (11,290 ) Net cash used in financing activities (42,959 ) (1,894 ) — (44,853 ) Effect of exchange rate changes on cash — (714 ) — (714 ) Net increase in cash 227 2,297 — 2,524 Cash and cash equivalents at beginning of year 1,033 580 — 1,613 Cash and cash equivalents at end of year $ 1,260 $ 2,877 $ — $ 4,137 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash Flows from Operating Activities: Net (loss) income (15,603 ) 21,177 — $ 5,574 Adjustments to reconcile net (loss) income to net cash provided by operating activities: Deferred financing costs write-off 931 — — 931 Asset impairment charge and loss on divestiture, net 66,110 18 66,128 Non-cash restructuring expense, excluding share-based compensation 12,411 — — 12,411 Provision for doubtful accounts 3,065 640 — 3,705 Amortization of deferred financing costs 3,073 58 — 3,131 Amortization of long-term liabilities 99 2 — 101 Share-based compensation expense 13,426 401 — 13,827 Depreciation and amortization 53,260 7,084 — 60,344 Gain on sale of rental fleet (5,934 ) (468 ) — (6,402 ) Loss on disposal of property, plant and equipment 1,873 315 — 2,188 Deferred income taxes (8,832 ) 3,203 — (5,629 ) Tax shortfall on equity award transactions (166 ) — — (166 ) Foreign currency transaction loss — 2 — 2 Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables (3,345 ) (839 ) — (4,184 ) Inventories 1,032 (87 ) — 945 Other assets (2 ) (853 ) — (855 ) Accounts payable 6,156 (1,551 ) — 4,605 Accrued liabilities (3,823 ) (19 ) — (3,842 ) Intercompany 1,305 (1,305 ) — — Net cash provided by operating activities 125,036 27,778 — 152,814 Cash Flows from Investing Activities: Proceeds from wood mobile office divestiture, net 83,252 28 — 83,280 Cash paid for businesses acquired, net of cash acquired (17,325 ) (1,200 ) — (18,525 ) Additions to rental fleet, excluding acquisitions (52,366 ) (22,366 ) — (74,732 ) Proceeds from sale of rental fleet 14,777 2,088 — 16,865 Additions to property, plant and equipment, excluding acquisitions (25,231 ) (5,932 ) — (31,163 ) Proceeds from sale of property, plant and equipment 8,985 875 — 9,860 Net cash provided by (used in) investing activities 12,092 (26,507 ) — (14,415 ) Cash Flows from Financing Activities: Net repayments under lines of credit (36,386 ) (1,424 ) — (37,810 ) Deferred financing costs (4,683 ) — (4,683 ) Principal payments on capital lease obligations (4,173 ) (80 ) — (4,253 ) Issuance of common stock 1,703 — — 1,703 Dividend payments (33,700 ) — — (33,700 ) Purchase of treasury stock (61,833 ) — — (61,833 ) Net cash used in financing activities (139,072 ) (1,504 ) — (140,576 ) Effect of exchange rate changes on cash — 51 — 51 Net decrease in cash (1,944 ) (182 ) — (2,126 ) Cash and cash equivalents at beginning of year 2,977 762 — 3,739 Cash and cash equivalents at end of year $ 1,033 $ 580 $ — $ 1,613

Mobile Mini, Organization and41

Mobile Mini, Organization and Description of Business - Additional Information (Detail)	Dec. 31, 2017	Dec. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Percentage of ownership owned	100.00%	100.00%

Summary of Significant Accoun42

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	May 09, 2016
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Customer accounts percentage description		Our largest customer accounted for approximately 4.5% of our consolidated rental revenue for the year ended December 31, 2017, and 16.7% of our total receivables at December 31, 2017
Depreciation expense		$ 25,900,000	$ 25,100,000	$ 20,200,000
Capitalized software development costs		39,500,000	35,000,000
Deferred financing costs		8,354,000
Goodwill	[1]	708,907,000	703,558,000	706,387,000
Amortization of all other intangibles		6,500,000	6,400,000	6,000,000
Prepaid advertising costs		100,000	100,000
Advertising expense		$ 4,000,000	3,900,000	4,100,000
Senior notes fair value basis for measurement, description		The fair value of our $250 million aggregate principal amount of 5.875% senior notes due July 1, 2024 (the “Senior Notes” or “2024 Notes”) is based on their latest sales price at the end of each period obtained from a third-party institution and is Level 2 in the fair value hierarchy as there is not an active market for these Senior Notes.
March 2016 | Retained Earnings (Deficit)
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle, effect of adoption, quantification		$ 18,500,000
Wood mobile offices
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Impairment charge of long-lived asset to be sold				64,600,000
Storage Solutions
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Goodwill		527,691,000	522,342,000
Storage Solutions | North America
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Goodwill		468,785,000	468,464,000
Storage Solutions | United Kingdom
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Goodwill		58,906,000	53,878,000
Tank & Pump Solutions Segment
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Goodwill		181,216,000	$ 181,216,000
$1.0 billion ABL Credit Agreement
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Unamortized deferred financing cost		4,200,000
Senior Notes 5.875 Percent Due 2024
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Unamortized deferred financing cost		4,200,000
Senior notes, face amount		$ 250,000,000			$ 250,000,000
Debt instrument interest rate		5.875%	5.875%
Senior notes due, date		Jul. 1, 2024
Deferred financing costs
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Amortization of deferred financing costs		$ 2,100,000	$ 2,000,000	$ 3,100,000
Accounts Receivable | Customer Concentration Risk
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage		1.50%	1.50%	1.50%
Accounts Receivable | Credit Concentration Risk
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage		16.70%
Rental Revenue | Credit Concentration Risk
Description Of Business Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage		4.50%
[1]	Includes accumulated amortization of $2.0 million and accumulated impairment of $12.5 million.

Schedule of Allowance for Doubt

Schedule of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Balance at beginning of year	$ 4,886	$ 2,162	$ 1,636
Provision charged to expense	5,037	6,162	3,705
Write-offs and other	(3,673)	(3,438)	(3,179)
Balance at end of year	$ 6,250	$ 4,886	$ 2,162

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 11,732	$ 12,908
Work-in-process	50	31
Finished units	3,889	2,473
Inventories	$ 15,671	$ 15,412

Property, Plant and Equipment (

Property, Plant and Equipment (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment [Line Items]
Land		$ 2,970	$ 3,789
Vehicles and machinery		151,937	131,584
Buildings and improvements	[1]	25,079	22,750
Furniture, office and computer equipment		73,416	63,969
Property, plant and equipment		253,402	222,092
Accumulated depreciation and amortization		(96,098)	(72,895)
Property, plant and equipment, net		$ 157,304	$ 149,197
Vehicles and machinery | Minimum
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost		0.00%
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%
Useful Life in Years		30 years
Buildings and improvements | Minimum
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost	[1]	0.00%
Useful Life in Years	[1]	3 years
Buildings and improvements | Maximum
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost	[1]	25.00%
Useful Life in Years	[1]	30 years
Furniture, office and computer equipment
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost		0.00%
Furniture, office and computer equipment | Minimum
Property Plant And Equipment [Line Items]
Useful Life in Years		3 years
Furniture, office and computer equipment | Maximum
Property Plant And Equipment [Line Items]
Useful Life in Years		10 years
[1]	Improvements made to leased properties are depreciated over the lesser of the estimated useful life or the remaining term of the respective lease

Schedule of Expected Annual Amo

Schedule of Expected Annual Amortization of Deferred Financing Cost (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Accounting Policies [Abstract]
2,018	$ 2,060
2,019	2,060
2,020	2,000
2,021	638
2,022	638
Thereafter	958
Total	$ 8,354

Activity and Balances Relating

Activity and Balances Relating to Goodwill (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill Beginning Balance	[1]	$ 703,558	$ 706,387
Acquisitions			6,449
Adjustments		18	1,071
Foreign currency	[2]	5,331	(10,349)
Goodwill Ending Balance	[1]	$ 708,907	$ 703,558
[1]	Includes accumulated amortization of $2.0 million and accumulated impairment of $12.5 million.
[2]	Represents foreign currency translation adjustments related to the U.K. portable storage reporting unit.

Activity and Balances Relatin48

Activity and Balances Relating to Goodwill (Parenthetical) (Detail) $ in Millions	Dec. 31, 2017USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, accumulated amortization	$ 2
Goodwill, accumulated impairment	$ 12.5

Balances Related to Intangible

Balances Related to Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 101,139	$ 100,352
Accumulated Amortization	(39,115)	(31,932)
Net Carrying Amount	62,024	68,420
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	93,235	92,515
Accumulated Amortization	(34,660)	(28,729)
Net Carrying Amount	$ 58,575	63,786
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	15 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	$ 5,954	5,892
Accumulated Amortization	(3,312)	(2,364)
Net Carrying Amount	$ 2,642	3,528
Trade names/trademarks | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Trade names/trademarks | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Gross Carrying Amount	$ 1,890	1,886
Accumulated Amortization	(1,114)	(813)
Net Carrying Amount	$ 776	1,073
Other
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	20 years
Gross Carrying Amount	$ 60	59
Accumulated Amortization	(29)	(26)
Net Carrying Amount	$ 31	$ 33

Schedule of Expected Future Amo

Schedule of Expected Future Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite Lived Intangible Assets Future Amortization Expense [Abstract]
2,018	$ 6,485
2,019	6,271
2,020	5,147
2,021	4,909
2,022	4,608
Thereafter	34,604
Net Carrying Amount	$ 62,024	$ 68,420

Reconciliation of Net Income an

Reconciliation of Net Income and Weighted-Average Shares of Common Stock Outstanding for Purposes of Calculating Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Numerator:
Net income	$ 92,071	$ 11,228	$ 8,777	$ 10,152	$ 19,469	$ 12,709	$ 4,072	$ 10,998	$ 122,228	$ 47,248	$ 5,574
Denominator:
Weighted average shares outstanding - basic									44,055	44,145	44,953
Dilutive effect of share-based awards									199	245	507
Weighted average shares outstanding - diluted									44,254	44,390	45,460
Earnings per share:
Basic	$ 2.09	$ 0.25	$ 0.20	$ 0.23	$ 0.44	$ 0.29	$ 0.09	$ 0.25	$ 2.77	$ 1.07	$ 0.12
Diluted	$ 2.07	$ 0.25	$ 0.20	$ 0.23	$ 0.44	$ 0.29	$ 0.09	$ 0.25	$ 2.76	$ 1.06	$ 0.12

Number of Stock Options and Res

Number of Stock Options and Restricted Awards that were Issued or Outstanding but were Excluded in Calculating Diluted Earnings Per Share Because their Effect would have been Anti-Dilutive (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of dilutive EPS	2,080	2,081	1,136
Stock options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of dilutive EPS	2,078	2,076	1,135
Restricted stock awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of dilutive EPS	2	5	1

Gross Carrying and Fair Value o

Gross Carrying and Fair Value of Senior Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Carrying value	$ 245,850	$ 245,212
Senior Notes 5.875 Percent Due 2024
Debt Instrument [Line Items]
Carrying value	250,000	250,000
Fair value	$ 262,500	$ 258,750

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - Entity	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Number of business acquired	0
Portable Storage Businesses
Business Acquisition [Line Items]
Number of business acquired		3	2

Schedule of Components of Purch

Schedule of Components of Purchase Price and Net Assets Acquired (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Net Assets Acquired:
Cash	$ 1,562
Rental fleet	10,054	$ 11,057
Property, plant and equipment	285	157
Intangible assets:
Goodwill	6,467	6,443
Other assets	1,218	316
Other liabilities	(3,125)	(281)
Total	18,127	18,525
Total, less cash acquired	16,565	18,525
Customer relationships
Intangible assets:
Intangible assets	1,616	759
Non-compete agreements
Intangible assets:
Intangible assets	$ 50	$ 74

Impairment and Divestiture of56

Impairment and Divestiture of North American Wood Mobile Offices - Additional Information (Detail) - Wood mobile offices - USD ($) $ in Thousands	Apr. 16, 2015	Dec. 31, 2017	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Definitive agreement date		Apr. 16, 2015
Sale price of rental fleet	$ 92,000		$ 92,000
Closing time of transaction		The transaction closed on May 15, 2015
Deferred revenue and customer deposits	$ 6,800

Schedule of Impairment and Dive

Schedule of Impairment and Divestiture (Detail) - USD ($) $ in Thousands	Apr. 16, 2015	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Estimated fair market value		$ 92,000
Rental fleet, net			$ 989,154	$ 950,065
Property, plant and equipment, net			$ 157,304	$ 149,197
Impairment loss		(64,630)
Asset impairment charge and loss on divestiture, net		66,128
Wood mobile offices in rental fleet
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rental fleet, net		155,429
Ancillary items in property, plant and equipment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property, plant and equipment, net		1,201
Wood mobile offices
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale price	$ 92,000	92,000
Book value of divested assets after impairment		92,000
Selling expenses		1,498
Net loss on sale of wood mobile offices		(1,498)
Asset impairment charge and loss on divestiture, net		$ (66,128)

Rental Fleet - Additional Infor

Rental Fleet - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, net	$ 989,154	$ 950,065
Portable Storage
Property Subject to or Available for Operating Lease [Line Items]
Depreciation expense	31,000	$ 32,300	$ 34,100
Net orderly liquidation appraisal value of rental fleet	$ 1,100,000

Rental Fleet (Detail)

Rental Fleet (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Property Subject to or Available for Operating Lease [Line Items]
Total fleet, net		$ 989,154	$ 950,065
Storage Solutions
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		1,038,679	977,098
Accumulated depreciation		(168,112)	(151,238)
Total fleet, net		$ 870,567	825,860
Storage Solutions | Steel storage containers
Property Subject to or Available for Operating Lease [Line Items]
Residual Value as Percentage of Original Cost	[1]	55.00%
Useful Life in Years		30 years
Rental fleet, gross		$ 655,553	625,094
Storage Solutions | Steel ground level offices
Property Subject to or Available for Operating Lease [Line Items]
Residual Value as Percentage of Original Cost	[1]	55.00%
Useful Life in Years		30 years
Rental fleet, gross		$ 374,836	347,574
Storage Solutions | Other
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		8,290	4,430
Tank & Pump Solutions
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		161,851	156,629
Accumulated depreciation		(43,264)	(32,424)
Total fleet, net		$ 118,587	124,205
Tank & Pump Solutions | Steel tanks
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years		25 years
Rental fleet, gross		$ 64,254	61,955
Tank & Pump Solutions | Roll-off boxes
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		$ 29,897	28,743
Tank & Pump Solutions | Roll-off boxes | Minimum
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years		15 years
Tank & Pump Solutions | Roll-off boxes | Maximum
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years		20 years
Tank & Pump Solutions | Stainless steel tank trailers
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years		25 years
Rental fleet, gross		$ 28,871	29,150
Tank & Pump Solutions | Vacuum Boxes
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years		20 years
Rental fleet, gross		$ 12,700	11,512
Tank & Pump Solutions | De-watering boxes
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years		20 years
Rental fleet, gross		$ 6,361	5,429
Tank & Pump Solutions | Pumps and filtration equipment
Property Subject to or Available for Operating Lease [Line Items]
Useful Life in Years		7 years
Rental fleet, gross		$ 12,680	13,690
Tank & Pump Solutions | Other
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		$ 7,088	$ 6,150
[1]	Tank & Pump Solutions fleet has been assigned zero residual value.

Rental Fleet (Parenthetical) (D

Rental Fleet (Parenthetical) (Detail)	Dec. 31, 2017USD ($)
Tank & Pump Solutions
Property Subject to or Available for Operating Lease [Line Items]
Residual value	$ 0

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)	May 09, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 14, 2015
Debt Instrument [Line Items]
Credit Agreement, interest rate terms		Outstanding amounts under the Credit Agreement bear interest at our option at either: (i) the London interbank offered rate (“LIBOR”) plus an applicable margin (“LIBOR Loans”), or (ii) the prime rate plus an applicable margin (“Base Rate Loans”).
Line of credit, covenant		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’s or its subsidiaries’ assets, (ii) repurchase or pay dividends or make certain other restricted payments on capital stock and certain other securities, or prepay certain indebtedness, (iii) incur additional indebtedness or engage in certain other types of financing transactions, and (iv) make acquisitions or other investments.
Line of credit facility, covenant compliance		In addition, we must comply with a minimum fixed charge coverage ratio of 1.00 to 1.00 as of the last day of each quarter, upon the minimum availability amount under the Credit Agreement falling below the greater of (y) $90 million and (z) 10% of the lesser of the then total revolving loan commitment and aggregate borrowing base.
Minimum fixed charges coverage ratio		100.00%
Line of credit, minimum borrowing availability for financial maintenance covenants to be applicable		$ 90,000,000
Applicable percentage of revolving loan commitment and aggregate borrowing base		10.00%
Lines of credit, weighted average interest rate		2.60%	2.10%
Lines of credit, average balance outstanding		$ 637,900,000	$ 652,000,000
Lines of credit		634,285,000	641,160,000
Additional borrowing available under credit agreement		361,400,000
Deferred financing costs write-off			2,271,000	$ 931,000
Obligations under capital leases		52,791,000	50,704,000
Assets recorded under capital lease obligations		71,600,000	62,600,000
Assets recorded under capital lease obligations, accumulated amortization		$ 25,400,000	$ 16,000,000
Maximum
Debt Instrument [Line Items]
Percentage of net orderly liquidation value of rental-fleet to be included in determination of borrowing base		90.00%
Capitalized leases, interest rates		3.50%
Minimum
Debt Instrument [Line Items]
Capitalized leases, interest rates		1.70%
LIBOR Loans
Debt Instrument [Line Items]
Revolving credit facility, margin rate		1.50%
LIBOR Loans | Maximum
Debt Instrument [Line Items]
Revolving credit facility, margin rate		1.75%
LIBOR Loans | Minimum
Debt Instrument [Line Items]
Revolving credit facility, margin rate		1.25%
Base Rate Loans
Debt Instrument [Line Items]
Revolving credit facility, margin rate		0.50%
Base Rate Loans | Maximum
Debt Instrument [Line Items]
Revolving credit facility, margin rate		0.75%
Base Rate Loans | Minimum
Debt Instrument [Line Items]
Revolving credit facility, margin rate		0.25%
$1 billion ABL Credit Agreement
Debt Instrument [Line Items]
Credit Agreement, term		5 years
$1 billion ABL Credit Agreement | First Lien Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Credit Agreement, borrowing capacity					$ 1,000,000,000
Credit Agreement, maturity date		Dec. 14, 2020
U.S. Based Lenders | $1 billion ABL Credit Agreement | Standby Letters of Credit
Debt Instrument [Line Items]
Credit Agreement, borrowing capacity					50,000,000
U.K. Based Lenders | $1 billion ABL Credit Agreement | Standby Letters of Credit
Debt Instrument [Line Items]
Credit Agreement, borrowing capacity					20,000,000
Canadian Based Lenders | $1 billion ABL Credit Agreement | Standby Letters of Credit
Debt Instrument [Line Items]
Credit Agreement, borrowing capacity					$ 20,000,000
Senior Notes 5.875 Percent Due 2024
Debt Instrument [Line Items]
Senior notes, face amount	$ 250,000,000	$ 250,000,000
Offering price percentage of face value	100.00%
Senior notes, interest rate		5.875%	5.875%
Senior notes, maturity term		8 years
Senior notes, maturity date		Jul. 1, 2024
Senior Notes 7.875 Percent Due 2020
Debt Instrument [Line Items]
Redeemed senior notes, face amount	$ 200,000,000
Senior notes, interest rate	7.875%		7.875%
Debt instrument redemption price, percentage	103.938%
Debt instrument, redemption date			Jun. 8, 2016
Debt extinguishment expense			$ 9,200,000
Debt redemption premiums			7,900,000
Interest expense prior to the redemption			1,300,000
Deferred financing costs write-off			$ 2,300,000

Future Minimum Capital Lease Pa

Future Minimum Capital Lease Payments (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Leases [Abstract]
2,018	$ 9,316
2,019	9,364
2,020	10,449
2,021	9,981
2,022	8,483
Thereafter	9,086
Total	56,679
Amount representing interest	(3,888)
Present value of minimum lease payments	$ 52,791	$ 50,704

Scheduled Maturity for Debt Obl

Scheduled Maturity for Debt Obligations (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Debt Instrument [Line Items]
2,018	$ 8,143
2,019	8,393
2,020	643,975
2,021	9,462
2,022	8,182
Thereafter	258,921
Total	937,076
Lines of Credit
Debt Instrument [Line Items]
2,020	634,285
Total	634,285
Senior Notes
Debt Instrument [Line Items]
Thereafter	250,000
Total	250,000
Capital Lease Obligations
Debt Instrument [Line Items]
2,018	8,143
2,019	8,393
2,020	9,690
2,021	9,462
2,022	8,182
Thereafter	8,921
Total	$ 52,791

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	Dec. 22, 2017	Dec. 21, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2017
Income Tax Contingency [Line Items]
Net benefit recognized on deferred tax liabilities as a result of change in tax rate			$ 77,600,000
Provisional income tax expense related to repatriation of foreign earnings			3,100,000
Deferred tax liability on foreign earnings			$ 0				$ 0
Effective income tax rate, percent			(64.90%)	31.40%	(641.20%)
Federal income tax rate			35.00%	35.00%	35.00%
Change in effective tax rate as a result of enacted tax rate change			(104.70%)	0.20%	(97.60%)
Mandatory repatriation of foreign earnings affected tax rate			4.20%
Income tax paid			$ 2,607,000	$ 1,772,000	$ 4,935,000
Tax year subject to tax examination for U.S. Federal return			As of December 31, 2017, we are no longer subject to examination by U.S. federal tax authorities for years prior to 2014, to examination for any U.S. state taxing authority prior to 2012, or to examination for any foreign jurisdictions prior to 2013. All subsequent periods remain open to examination.
Unrecognized excess tax benefits			$ 14,140,000	$ 5,874,000			14,140,000
Maximum
Income Tax Contingency [Line Items]
Unrecognized tax benefits expected to reverse			12 months
Minimum
Income Tax Contingency [Line Items]
Step two threshold to quantify uncertain tax position			50.00%
United Kingdom
Income Tax Contingency [Line Items]
Federal income tax rate				17.00%	18.00%	20.00%
Changes in U.K. income tax rate resulted in tax benefit				$ 900,000	$ 1,400,000
U.S.
Income Tax Contingency [Line Items]
Federal income tax rate	21.00%	35.00%
Net operating loss carryforwards			$ 206,400,000				206,400,000
Federal taxable income							122,200,000
U.S. | Maximum
Income Tax Contingency [Line Items]
Net operating loss carryforwards, expiration year			2,034
U.S. | Minimum
Income Tax Contingency [Line Items]
Net operating loss carryforwards, expiration year			2,028
US and UK
Income Tax Contingency [Line Items]
Net deferred tax liability			$ 19,300,000	$ 18,500,000			19,300,000
State
Income Tax Contingency [Line Items]
Net operating loss carryforwards			$ 114,200,000				$ 114,200,000
State | Maximum
Income Tax Contingency [Line Items]
Net operating loss carryforwards, expiration year			2,036
State | Minimum
Income Tax Contingency [Line Items]
Net operating loss carryforwards, expiration year			2,018

Income (Loss) Before Taxes from

Income (Loss) Before Taxes from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before provision for (benefit from) income taxes	$ 74,124	$ 68,898	$ 752
U.S.
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before provision for (benefit from) income taxes	52,609	45,430	(23,750)
Foreign
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before provision for (benefit from) income taxes	$ 21,515	$ 23,468	$ 24,502

Provision for Income Taxes from

Provision for Income Taxes from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
U.S. federal		$ (1,124)	$ 1,124
State	$ 990	1,093	326
Foreign	886
Total current	1,876	(31)	1,450
Deferred
U.S. federal	(59,257)	16,628	(8,549)
State	7,000	1,215	(1,190)
Foreign	2,277	3,838	3,467
Total deferred	(49,980)	21,681	(6,272)
Total (benefit) provision for income taxes	$ (48,104)	$ 21,650	$ (4,822)

Reconciliation of U.S. Federal

Reconciliation of U.S. Federal Statutory Rate to Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	4.50%	1.60%	(222.40%)
Nondeductible expenses and other	0.10%	1.10%	128.10%
U.S. mandatory repatriation	4.20%
Adjustment of net deferred tax liability for enacted tax rate change	(104.70%)	0.20%	(97.60%)
Foreign rate differential	(4.00%)	(6.50%)	(484.30%)
Effective tax rate	(64.90%)	31.40%	(641.20%)

Net Deferred Tax Liability (Det

Net Deferred Tax Liability (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Net operating loss carryforwards	$ 44,228	$ 71,126
Deferred revenue and expenses	8,435	11,050
Accrued compensation and other benefits	4,118	2,465
Allowance for doubtful accounts	1,532	2,026
Equity compensation	7,092	10,937
Capital leases	12,999	18,984
Other	1,456	513
Total deferred tax assets	79,860	117,101
Valuation allowance	(1,126)	(1,126)
Net deferred tax assets	78,734	115,975
Deferred tax liabilities
Fixed assets	(218,605)	(309,010)
Intangibles and goodwill	(33,165)	(46,585)
Other	(718)	(1,070)
Total deferred tax liabilities	(252,488)	(356,665)
Net deferred tax liabilities	$ (173,754)	$ (240,690)

Summary of Reconciliation of Un

Summary of Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Beginning balance	$ 5,874
Additions for tax positions of prior years	8,266	$ 5,874
Ending balance	$ 14,140	$ 5,874

Transactions with Related Per70

Transactions with Related Persons - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)Property
Digital Marketing and Strategy Company
Related Party Transaction [Line Items]
Payments to related party	$ 700,000
Due/owed to related party	0
Management Consultant Company
Related Party Transaction [Line Items]
Due/owed to related party	600,000
Amount expensed related to agreement, including reimbursement for expenses incurred	1,000,000
Water Movers
Related Party Transaction [Line Items]
Monthly rental payment under leases	$ 18,000
Number of properties | Property	2
Lease expiration year	2,023

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share available for future grants		1,800
Stock options contractual terms		10 years
Forfeiture of shares		352	155	98
Aggregate intrinsic value of options exercised		$ 1.6	$ 0.1	$ 0.8
Weighted average fair value of stock options granted		$ 8.23	$ 6.64	$ 8.43
Fair value of restricted stock awards vested		$ 4.3	$ 3.8	$ 4.8
Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-awards vesting period		3 years
Percentage of awards vested			0.00%
Performance based awards stock options unvested		700
Performance Based Awards | Scenario, Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares expected to vest	100
Forfeiture of shares	100
Non Employee Director Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards vested		100.00%
Share-based compensation expense		$ 0.8	$ 0.8	$ 0.8
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		$ 2.1
Weighted average recognition period (years)		10 months 25 days
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		$ 5.3
Weighted average recognition period (years)		2 years 4 months 25 days
Minimum | Nonvested share-awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-awards vesting period		3 years
Minimum | Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards vested		50.00%
Maximum | Nonvested share-awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-awards vesting period		4 years
Maximum | Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards vested		200.00%

Summary of Share-Based Compensa

Summary of Share-Based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation	$ 7,373	$ 7,399	$ 13,827
Rental, selling and general expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation	7,255	7,220	12,277
Restructuring expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation	$ 118	$ 179	$ 1,550

Key Assumptions Used to Estimat

Key Assumptions Used to Estimate Fair Value of Stock Options Granted (Detail) - Stock options	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, minimum	1.70%	1.10%	1.30%
Risk-free interest rate, maximum	2.10%	1.50%	1.70%
Expected life of the options (years)	5 years	5 years	5 years
Expected stock price volatility, minimum	32.90%	35.30%	35.30%
Expected stock price volatility, maximum	35.40%	36.90%	36.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend rate	2.50%	2.20%	1.80%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend rate	3.10%	3.10%	2.10%

Stock Option Activity (Detail)

Stock Option Activity (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Shares
Options outstanding, beginning of year	3,292	2,870	2,649
Granted	462	594	381
Canceled/Expired	(352)	(155)	(98)
Exercised	(233)	(17)	(62)
Options outstanding, end of year	3,169	3,292	2,870
Options exercisable, end of year	2,429	2,508	1,643
Weighted Average Exercise Price
Options outstanding, beginning of year	$ 32.06	$ 33.40	$ 32.33
Granted	32.44	26.54	42.80
Canceled/Expired	33.43	36.07	44.60
Exercised	24.88	28.50	27.56
Options outstanding, end of year	32.49	$ 32.06	$ 33.40
Options exercisable, end of year	$ 32.84

Fully Vested Stock Options and

Fully Vested Stock Options and Stock Options Expected to Vest (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of Shares
Outstanding	3,169	3,292	2,870	2,649
Exercisable	2,429	2,508	1,643
Weighted Average Exercise Price
Outstanding	$ 32.49	$ 32.06	$ 33.40	$ 32.33
Exercisable	$ 32.84
Weighted Average Remaining Contractual Term (In years)
Outstanding	6 years 1 month 9 days
Exercisable	5 years 4 months 9 days
Aggregate Intrinsic Value
Outstanding	$ 11,568
Exercisable	$ 8,554

Restricted Stock Activity (Deta

Restricted Stock Activity (Detail) - Restricted stock awards - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Shares
Restricted stock awards at beginning of period	243	242	343
Awarded	163	172	107
Released	(142)	(130)	(169)
Forfeited	(30)	(41)	(39)
Restricted stock awards at end of period	234	243	242
Weighted Average Grant Date Fair Value
Restricted stock awards at beginning of period	$ 30.27	$ 31.70	$ 27.99
Awarded	32.25	27.39	37.17
Released	30.39	29.75	28.22
Forfeited	31.53	28.36	25.07
Restricted stock awards at end of period	$ 31.42	$ 30.27	$ 31.70

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Compensation And Retirement Disclosure [Abstract]
Benefit plan vesting period	5 years
Defined contribution program, percentage of annual employees' salary contributed by employer	$ 900,000	$ 900,000	$ 1,100,000
Defined contribution program, annual charge on employees' fund to cover administrative costs of program, percentage	$ 34,000	$ 32,000	$ 51,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Operating lease rental expense	$ 23,900,000	$ 22,300,000	$ 22,700,000
Accrued liabilities, reserves	3,900,000	$ 4,200,000
Letters of credit provided for various insurance carriers	4,300,000
General Liability
Loss Contingencies [Line Items]
Insurance deductible amount, per incident	50,000
Workers' Compensation
Loss Contingencies [Line Items]
Insurance deductible amount, per incident	250,000
Auto
Loss Contingencies [Line Items]
Insurance deductible amount, per incident	$ 500,000

Contractual Commitments Associa

Contractual Commitments Associated with Lease Obligations (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Operating Leased Assets [Line Items]
2,018	$ 17,971
2,019	14,820
2,020	12,516
2,021	10,369
2,022	9,016
Thereafter	24,603
Total	89,295
Operating Lease Commitments
Operating Leased Assets [Line Items]
2,018	17,664
2,019	14,794
2,020	12,516
2,021	10,369
2,022	9,016
Thereafter	24,603
Total	88,962
Restructuring Related Lease Commitments
Operating Leased Assets [Line Items]
2,018	307
2,019	26
Total	$ 333

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Apr. 17, 2015	Nov. 06, 2013
Equity, Class of Treasury Stock [Line Items]
Cash dividend paid, per share	$ 0.91
Cash dividend paid	$ 40,200,000
Share repurchase program authorized amount		$ 175,000,000	$ 125,000,000
Share repurchase program additional authorized amount		$ 50,000,000
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Treasury stock available for repurchase	$ 70,800,000

Schedule of Dividends Authorize

Schedule of Dividends Authorized and Declared Cash Dividends to Common Stockholders (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2017	Oct. 18, 2017	Jul. 18, 2017	Apr. 26, 2017	Jan. 31, 2017
Dividends Payable [Line Items]
Dividend Amount Per Share of Common Stock		$ 0.227	$ 0.227	$ 0.227	$ 0.227
Installment First Quarter Of Fiscal Year
Dividends Payable [Line Items]
Declaration Date	Jan. 31, 2017
Payment Date	Mar. 15, 2017
Record Date (close of business)	Mar. 1, 2017
Installment Second Quarter Of Fiscal Year
Dividends Payable [Line Items]
Declaration Date	Apr. 26, 2017
Payment Date	May 31, 2017
Record Date (close of business)	May 17, 2017
Installment Third Quarter Of Fiscal Year
Dividends Payable [Line Items]
Declaration Date	Jul. 18, 2017
Payment Date	Aug. 30, 2017
Record Date (close of business)	Aug. 16, 2017
Installment Fourth Quarter Of Fiscal Year
Dividends Payable [Line Items]
Declaration Date	Oct. 18, 2017
Payment Date	Nov. 29, 2017
Record Date (close of business)	Nov. 15, 2017

Schedule of Share Repurchase Ac

Schedule of Share Repurchase Activities (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Shares repurchased under share repurchase program:
Aggregate purchase price		$ 8,367	$ 11,290	$ 61,833
Other shares repurchased
Aggregate purchase price		$ 8,367	$ 11,290	$ 61,833
Share Repurchase Program
Shares repurchased under share repurchase program:
Number of shares repurchased		248	429	1,671
Aggregate purchase price		$ 7,338	$ 10,815	$ 61,023
Average price per repurchased share	[1]	$ 29.58	$ 25.20	$ 36.51
Other shares repurchased
Number of shares repurchased		248	429	1,671
Aggregate purchase price		$ 7,338	$ 10,815	$ 61,023
Average price per repurchased share	[1]	$ 29.58	$ 25.20	$ 36.51
Minimum tax withholding obligations
Shares repurchased under share repurchase program:
Number of shares repurchased		34	16	21
Aggregate purchase price		$ 1,024	$ 467	$ 777
Average price per repurchased share	[1]	$ 30.40	$ 29.41	$ 36.21
Other shares repurchased
Number of shares repurchased		34	16	21
Aggregate purchase price		$ 1,024	$ 467	$ 777
Average price per repurchased share	[1]	$ 30.40	$ 29.41	$ 36.21
[1]	The weighted average price paid per share of common stock does not include the cost of commissions.

Restructuring Costs - Additiona

Restructuring Costs - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)PortableStorage
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 13,700,000	$ 2,886,000	$ 6,020,000	$ 20,798,000
Number of portable storage units abandoned | PortableStorage				5,000
Write-down value of fleet	$ 0
Severance and benefits		200,000	500,000	$ 4,600,000
Share-based compensation restructuring costs			200,000	1,600,000
Write-off and loss on sale of property, plant and equipment				1,400,000
Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring expenses		500,000
Evergreen Tank Solutions Integration
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		1,300,000	2,000,000	19,700,000
Wood Mobile Office Business Divesture
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		$ 900,000	$ 3,300,000	$ 800,000

Accrued Restructuring Obligatio

Accrued Restructuring Obligations and Related Activity (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Accrued obligations, beginning balance		$ 763	$ 1,742	$ 1,117
Restructuring expense	$ 13,700	2,886	6,020	20,798
Settlement of obligations		(2,892)	(6,999)	(20,173)
Accrued obligations, ending balance	1,742	757	763	1,742
Fleet and Property, Plant and Equipment Abandonment Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expense			109	15,274
Settlement of obligations			(109)	(15,274)
Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Accrued obligations, beginning balance		395	1,245	441
Restructuring expense		931	1,006	4,846
Settlement of obligations		(787)	(1,856)	(4,042)
Accrued obligations, ending balance	1,245	539	395	1,245
Lease Abandonment Costs
Restructuring Cost and Reserve [Line Items]
Accrued obligations, beginning balance		368	495	676
Restructuring expense		900	3,453	600
Settlement of obligations		(1,086)	(3,580)	(781)
Accrued obligations, ending balance	495	182	368	495
Other Costs
Restructuring Cost and Reserve [Line Items]
Accrued obligations, beginning balance			2
Restructuring expense		1,055	1,452	78
Settlement of obligations		(1,019)	$ (1,454)	(76)
Accrued obligations, ending balance	$ 2	$ 36		$ 2

Restructuring Expenses (Detail)

Restructuring Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 13,700	$ 2,886	$ 6,020	$ 20,798
Fleet and Property, Plant and Equipment Abandonment Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			109	15,274
Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		931	1,006	4,846
Lease Abandonment Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		900	3,453	600
Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		$ 1,055	$ 1,452	$ 78

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2017USD ($)Segment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment									3
Revenues	$ 146,696	$ 136,636	$ 126,690	$ 123,527	$ 130,387	$ 128,853	$ 124,849	$ 124,533	$ 533,549	$ 508,622	$ 530,777
United States
Segment Reporting Information [Line Items]
Revenues									444,700	424,400	$ 438,400
Long-lived assets other than property, plant and equipment	$ 1,500,000				$ 1,500,000				$ 1,500,000	$ 1,500,000

Segment Reporting (Detail)

Segment Reporting (Detail) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
Rental	$ 138,537	$ 127,695	$ 117,851	$ 114,742	$ 124,170	$ 121,784	$ 116,773	$ 117,356		$ 498,825	$ 480,083	$ 494,715
Sales										32,440	26,499	29,953
Other										2,284	2,040	6,109
Total revenues	146,696	136,636	126,690	123,527	130,387	128,853	124,849	124,533		533,549	508,622	530,777
Costs and expenses:
Rental, selling and general expenses										336,438	309,294	326,252
Cost of sales										21,001	16,471	19,671
Restructuring expenses									$ 13,700	2,886	6,020	20,798
Asset impairment charge and loss on divestiture, net												66,128
Depreciation and amortization										63,372	63,734	60,344
Total costs and expenses										423,697	395,519	493,193
Income from operations	$ 36,995	$ 26,812	$ 22,152	$ 23,893	$ 34,700	$ 26,667	$ 25,541	$ 26,195		109,852	113,103	37,584
Interest expense, net of interest income										35,703	32,724	35,899
Income tax (benefit) provision										(48,104)	21,650	(4,822)
Capital expenditures for additions to rental fleet, excluding acquisitions										63,688	57,372	74,732
Storage Solutions
Revenues:
Rental										406,590	387,145	395,091
Sales										26,989	21,576	22,387
Other										1,875	1,840	6,037
Total revenues										435,454	410,561	423,515
Costs and expenses:
Rental, selling and general expenses										268,013	245,536	263,746
Cost of sales										17,930	13,319	14,580
Restructuring expenses										2,674	5,419	17,790
Asset impairment charge and loss on divestiture, net												66,128
Depreciation and amortization										38,792	35,509	34,828
Total costs and expenses										327,409	299,783	397,072
Income from operations										108,045	110,778	26,443
Interest expense, net of interest income										24,886	21,456	25,125
Income tax (benefit) provision										(50,841)	25,608	(5,270)
Capital expenditures for additions to rental fleet, excluding acquisitions										56,448	43,121	50,686
Storage Solutions | North America
Revenues:
Rental										329,248	309,221	310,864
Sales										19,016	18,852	18,833
Other										1,430	1,530	5,697
Total revenues										349,694	329,603	335,394
Costs and expenses:
Rental, selling and general expenses										217,718	197,440	210,323
Cost of sales										11,534	11,248	11,852
Restructuring expenses										2,674	5,419	17,790
Asset impairment charge and loss on divestiture, net												66,128
Depreciation and amortization										31,735	28,722	28,200
Total costs and expenses										263,661	242,829	334,293
Income from operations										86,033	86,774	1,101
Interest expense, net of interest income										24,385	20,920	24,249
Income tax (benefit) provision										(52,886)	22,687	(8,639)
Capital expenditures for additions to rental fleet, excluding acquisitions										45,043	32,270	28,532
Storage Solutions | United Kingdom
Revenues:
Rental										77,342	77,924	84,227
Sales										7,973	2,724	3,554
Other										445	310	340
Total revenues										85,760	80,958	88,121
Costs and expenses:
Rental, selling and general expenses										50,295	48,096	53,423
Cost of sales										6,396	2,071	2,728
Depreciation and amortization										7,057	6,787	6,628
Total costs and expenses										63,748	56,954	62,779
Income from operations										22,012	24,004	25,342
Interest expense, net of interest income										501	536	876
Income tax (benefit) provision										2,045	2,921	3,369
Capital expenditures for additions to rental fleet, excluding acquisitions										11,405	10,851	22,154
Tank & Pump Solutions Segment
Revenues:
Rental										92,235	92,938	99,624
Sales										5,451	4,923	7,566
Other										409	200	72
Total revenues										98,095	98,061	107,262
Costs and expenses:
Rental, selling and general expenses										68,425	63,758	62,506
Cost of sales										3,071	3,152	5,091
Restructuring expenses										212	601	3,008
Depreciation and amortization										24,580	28,225	25,516
Total costs and expenses										96,288	95,736	96,121
Income from operations										1,807	2,325	11,141
Interest expense, net of interest income										10,817	11,268	10,774
Income tax (benefit) provision										2,737	(3,958)	448
Capital expenditures for additions to rental fleet, excluding acquisitions										$ 7,240	$ 14,251	$ 24,046

Assets Segments (Detail)

Assets Segments (Detail) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	[1]	$ 708,907	$ 703,558	$ 706,387
Intangibles, net		62,024	68,420
Rental fleet, net		989,154	950,065
Storage Solutions
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill		527,691	522,342
Intangibles, net		1,956	2,858
Rental fleet, net		870,567	825,860
Storage Solutions | North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill		468,785	468,464
Intangibles, net		1,314	1,959
Rental fleet, net		714,154	688,477
Storage Solutions | United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill		58,906	53,878
Intangibles, net		642	899
Rental fleet, net		156,413	137,383
Tank & Pump Solutions Segment
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill		181,216	181,216
Intangibles, net		60,068	65,562
Rental fleet, net		$ 118,587	$ 124,205
[1]	Includes accumulated amortization of $2.0 million and accumulated impairment of $12.5 million.

Unaudited Selected Consolidated

Unaudited Selected Consolidated Financial Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Rental revenue	$ 138,537	$ 127,695	$ 117,851	$ 114,742	$ 124,170	$ 121,784	$ 116,773	$ 117,356	$ 498,825	$ 480,083	$ 494,715
Total revenues	146,696	136,636	126,690	123,527	130,387	128,853	124,849	124,533	533,549	508,622	530,777
Income from operations	36,995	26,812	22,152	23,893	34,700	26,667	25,541	26,195	109,852	113,103	37,584
Net income	$ 92,071	$ 11,228	$ 8,777	$ 10,152	$ 19,469	$ 12,709	$ 4,072	$ 10,998	$ 122,228	$ 47,248	$ 5,574
Earnings per share:
Basic	$ 2.09	$ 0.25	$ 0.20	$ 0.23	$ 0.44	$ 0.29	$ 0.09	$ 0.25	$ 2.77	$ 1.07	$ 0.12
Diluted	$ 2.07	$ 0.25	$ 0.20	$ 0.23	$ 0.44	$ 0.29	$ 0.09	$ 0.25	$ 2.76	$ 1.06	$ 0.12

Condensed Consolidating Finan90

Condensed Consolidating Financial Information for Guarantors - Additional Information (Detail)	Dec. 31, 2017	Dec. 31, 2016
Equity Method Investments And Joint Ventures [Abstract]
Percentage of ownership owned	100.00%	100.00%

Condensed Consolidating Balance

Condensed Consolidating Balance Sheets (Detail) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents		$ 13,451	$ 4,137	$ 1,613	$ 3,739
Receivables, net		111,562	99,175
Inventories		15,671	15,412
Rental fleet, net		989,154	950,065
Property, plant and equipment, net		157,304	149,197
Other assets		15,334	14,930
Intangibles, net		62,024	68,420
Goodwill	[1]	708,907	703,558	706,387
Total assets		2,073,407	2,004,894
Liabilities:
Accounts payable		26,955	27,388
Accrued liabilities		78,084	64,126
Lines of credit		634,285	641,160
Obligations under capital leases		52,791	50,704
Senior Notes		245,850	245,212
Deferred income taxes		173,754	240,690
Total liabilities		1,211,719	1,269,280
Commitments and contingencies
Stockholders' equity:
Common stock		497	493
Additional paid-in capital		605,369	592,071
Retained earnings		463,322	362,896
Accumulated other comprehensive loss		(60,334)	(81,047)
Treasury stock, at cost		(147,166)	(138,799)
Total stockholders' equity		861,688	735,614	765,529	854,531
Total liabilities and stockholders' equity		2,073,407	2,004,894
Eliminations
ASSETS
Intercompany receivables		(150,661)	(150,529)
Total assets		(150,661)	(150,529)
Liabilities:
Intercompany payables		(2,662)	(2,530)
Total liabilities		(2,662)	(2,530)
Commitments and contingencies
Stockholders' equity:
Additional paid-in capital		(147,999)	(147,999)
Total stockholders' equity		(147,999)	(147,999)
Total liabilities and stockholders' equity		(150,661)	(150,529)
Guarantors
ASSETS
Cash and cash equivalents		803	1,260	1,033	2,977
Receivables, net		91,624	80,476
Inventories		13,471	14,526
Rental fleet, net		823,997	803,553
Property, plant and equipment, net		133,919	129,458
Other assets		13,324	13,189
Intangibles, net		61,360	67,487
Goodwill		645,126	645,126
Intercompany receivables		145,855	146,016
Total assets		1,929,479	1,901,091
Liabilities:
Accounts payable		21,004	20,218
Accrued liabilities		71,298	57,025
Lines of credit		634,285	640,975
Obligations under capital leases		52,648	50,507
Senior Notes		245,850	245,212
Deferred income taxes		153,345	224,212
Intercompany payables		1,437	384
Total liabilities		1,179,867	1,238,533
Commitments and contingencies
Stockholders' equity:
Common stock		497	493
Additional paid-in capital		605,369	592,071
Retained earnings		290,912	208,793
Treasury stock, at cost		(147,166)	(138,799)
Total stockholders' equity		749,612	662,558
Total liabilities and stockholders' equity		1,929,479	1,901,091
Non-Guarantors
ASSETS
Cash and cash equivalents		12,648	2,877	$ 580	$ 762
Receivables, net		19,938	18,699
Inventories		2,200	886
Rental fleet, net		165,157	146,512
Property, plant and equipment, net		23,385	19,739
Other assets		2,010	1,741
Intangibles, net		664	933
Goodwill		63,781	58,432
Intercompany receivables		4,806	4,513
Total assets		294,589	254,332
Liabilities:
Accounts payable		5,951	7,170
Accrued liabilities		6,786	7,101
Lines of credit			185
Obligations under capital leases		143	197
Deferred income taxes		20,409	16,478
Intercompany payables		1,225	2,146
Total liabilities		34,514	33,277
Commitments and contingencies
Stockholders' equity:
Additional paid-in capital		147,999	147,999
Retained earnings		172,410	154,103
Accumulated other comprehensive loss		(60,334)	(81,047)
Total stockholders' equity		260,075	221,055
Total liabilities and stockholders' equity		$ 294,589	$ 254,332
[1]	Includes accumulated amortization of $2.0 million and accumulated impairment of $12.5 million.

Condensed Consolidating Stateme

Condensed Consolidating Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
Rental	$ 138,537	$ 127,695	$ 117,851	$ 114,742	$ 124,170	$ 121,784	$ 116,773	$ 117,356		$ 498,825	$ 480,083	$ 494,715
Sales										32,440	26,499	29,953
Other										2,284	2,040	6,109
Total revenues	146,696	136,636	126,690	123,527	130,387	128,853	124,849	124,533		533,549	508,622	530,777
Costs and expenses:
Rental, selling and general expenses										336,438	309,294	326,252
Cost of sales										21,001	16,471	19,671
Restructuring expenses									$ 13,700	2,886	6,020	20,798
Asset impairment charge and loss on divestiture, net												66,128
Depreciation and amortization										63,372	63,734	60,344
Total costs and expenses										423,697	395,519	493,193
Income from operations	36,995	26,812	22,152	23,893	34,700	26,667	25,541	26,195		109,852	113,103	37,584
Other income (expense):
Interest income										25	2	1
Interest expense										(35,728)	(32,726)	(35,900)
Debt extinguishment expense											(9,192)
Deferred financing costs write-off											(2,271)	(931)
Foreign currency exchange										(25)	(18)	(2)
Income from operations before income tax (benefit) provision										74,124	68,898	752
Income tax (benefit) provision										(48,104)	21,650	(4,822)
Net income	$ 92,071	$ 11,228	$ 8,777	$ 10,152	$ 19,469	$ 12,709	$ 4,072	$ 10,998		122,228	47,248	5,574
Eliminations
Other income (expense):
Interest income										(10,600)	(10,613)	(10,639)
Interest expense										10,600	10,613	10,639
Guarantors
Revenues:
Rental										418,590	399,200	406,434
Sales										24,265	23,509	26,157
Other										1,829	1,718	5,764
Total revenues										444,684	424,427	438,355
Costs and expenses:
Rental, selling and general expenses										283,490	258,799	269,893
Cost of sales										14,464	14,228	16,781
Restructuring expenses										2,886	6,015	20,798
Asset impairment charge and loss on divestiture, net												66,110
Depreciation and amortization										55,976	56,548	53,260
Total costs and expenses										356,816	335,590	426,842
Income from operations										87,868	88,837	11,513
Other income (expense):
Interest income										10,616	10,613	10,640
Interest expense										(45,819)	(42,662)	(45,016)
Debt extinguishment expense											(9,192)
Deferred financing costs write-off											(2,271)	(931)
Income from operations before income tax (benefit) provision										52,665	45,325	(23,794)
Income tax (benefit) provision										(51,256)	18,729	(8,191)
Net income										103,921	26,596	(15,603)
Non-Guarantors
Revenues:
Rental										80,235	80,883	88,281
Sales										8,175	2,990	3,796
Other										455	322	345
Total revenues										88,865	84,195	92,422
Costs and expenses:
Rental, selling and general expenses										52,948	50,495	56,359
Cost of sales										6,537	2,243	2,890
Restructuring expenses											5
Asset impairment charge and loss on divestiture, net												18
Depreciation and amortization										7,396	7,186	7,084
Total costs and expenses										66,881	59,929	66,351
Income from operations										21,984	24,266	26,071
Other income (expense):
Interest income										9	2
Interest expense										(509)	(677)	(1,523)
Foreign currency exchange										(25)	(18)	(2)
Income from operations before income tax (benefit) provision										21,459	23,573	24,546
Income tax (benefit) provision										3,152	2,921	3,369
Net income										$ 18,307	$ 20,652	$ 21,177

Condensed Consolidating State93

Condensed Consolidating Statements of Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Statement Of Income Captions [Line Items]
Net (loss) income	$ 92,071	$ 11,228	$ 8,777	$ 10,152	$ 19,469	$ 12,709	$ 4,072	$ 10,998	$ 122,228	$ 47,248	$ 5,574
Other comprehensive income (loss):
Foreign currency translation adjustment, net of income tax provision (benefit) of $30, $106 and ($184) in 2017, 2016, 2015 respectively									20,713	(36,885)	(14,292)
Other comprehensive income (loss)									20,713	(36,885)	(14,292)
Comprehensive income (loss)									142,941	10,363	(8,718)
Guarantors
Condensed Statement Of Income Captions [Line Items]
Net (loss) income									103,921	26,596	(15,603)
Other comprehensive income (loss):
Comprehensive income (loss)									103,921	26,596	(15,603)
Non-Guarantors
Condensed Statement Of Income Captions [Line Items]
Net (loss) income									18,307	20,652	21,177
Other comprehensive income (loss):
Foreign currency translation adjustment, net of income tax provision (benefit) of $30, $106 and ($184) in 2017, 2016, 2015 respectively									20,713	(36,885)	(14,292)
Other comprehensive income (loss)									20,713	(36,885)	(14,292)
Comprehensive income (loss)									$ 39,020	$ (16,233)	$ 6,885

Condensed Consolidating State94

Condensed Consolidating Statements of Comprehensive Income (Loss) (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Foreign currency translation adjustment, income tax provision (benefit)	$ 30	$ 106	$ (184)

Condensed Consolidating State95

Condensed Consolidating Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities:
Net (loss) income	$ 92,071	$ 11,228	$ 8,777	$ 10,152	$ 19,469	$ 12,709	$ 4,072	$ 10,998	$ 122,228	$ 47,248	$ 5,574
Adjustments to reconcile net income to net cash provided by operating activities:
Debt extinguishment expense										9,192
Deferred financing costs write-off										2,271	931
Asset impairment charge and loss on divestiture, net											66,128
Non-cash restructuring expense, excluding share-based compensation											12,411
Provision for doubtful accounts									5,037	6,162	3,705
Amortization of deferred financing costs									2,060	1,976	3,131
Amortization of long-term liabilities									130	116	101
Share-based compensation expense									7,373	7,399	13,827
Depreciation and amortization									63,372	63,734	60,344
Gain on sale of rental fleet									(5,657)	(5,472)	(6,402)
Loss on disposal of property, plant and equipment									517	1,285	2,188
Deferred income taxes									(49,980)	21,634	(5,629)
Tax shortfall on equity award transactions										(242)	(166)
Foreign currency transaction loss									25	18	2
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables									(15,677)	(27,321)	(4,184)
Inventories									(90)	598	945
Other assets									(635)	60	(855)
Accounts payable									(4,985)	239	4,605
Accrued liabilities									11,928	7,347	(3,842)
Net cash provided by operating activities									135,646	136,244	152,814
Cash Flows from Investing Activities:
Proceeds from wood mobile office divestiture, net											83,280
Cash paid for businesses acquired, net of cash acquired										(16,565)	(18,525)
Additions to rental fleet, excluding acquisitions									(63,688)	(57,372)	(74,732)
Proceeds from sale of rental fleet									12,953	13,679	16,865
Additions to property, plant and equipment, excluding acquisitions									(20,122)	(30,659)	(31,163)
Proceeds from sale of property, plant and equipment									851	2,764	9,860
Net cash used in investing activities									(70,006)	(88,153)	(14,415)
Cash Flows from Financing Activities:
Net repayments under lines of credit									(6,875)	(26,548)	(37,810)
Proceeds from issuance of 5.875% senior notes due 2024										250,000
Redemption of 7.875% senior notes due 2020										(200,000)
Debt extinguishment expense										(9,192)
Deferred financing costs									(12)	(5,369)	(4,683)
Principal payments on capital lease obligations									(7,418)	(6,520)	(4,253)
Issuance of common stock									5,800	468	1,703
Dividend payments									(40,171)	(36,402)	(33,700)
Purchase of treasury stock									(8,367)	(11,290)	(61,833)
Net cash used in financing activities									(57,043)	(44,853)	(140,576)
Effect of exchange rate changes on cash									717	(714)	51
Net increase (decrease) in cash									9,314	2,524	(2,126)
Cash and cash equivalents at beginning of year				4,137				1,613	4,137	1,613	3,739
Cash and cash equivalents at end of year	13,451				4,137				13,451	4,137	1,613
Guarantors
Cash Flows from Operating Activities:
Net (loss) income									103,921	26,596	(15,603)
Adjustments to reconcile net income to net cash provided by operating activities:
Debt extinguishment expense										9,192
Deferred financing costs write-off										2,271	931
Asset impairment charge and loss on divestiture, net											66,110
Non-cash restructuring expense, excluding share-based compensation											12,411
Provision for doubtful accounts									4,446	5,498	3,065
Amortization of deferred financing costs									2,060	1,968	3,073
Amortization of long-term liabilities									130	116	99
Share-based compensation expense									7,083	7,126	13,426
Depreciation and amortization									55,976	56,548	53,260
Gain on sale of rental fleet									(5,319)	(5,014)	(5,934)
Loss on disposal of property, plant and equipment									140	1,131	1,873
Deferred income taxes									(52,248)	18,713	(8,832)
Tax shortfall on equity award transactions										(242)	(166)
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables									(15,595)	(23,543)	(3,345)
Inventories									1,056	(302)	1,032
Other assets									(578)	105	(2)
Accounts payable									(2,939)	(930)	6,156
Accrued liabilities									12,917	7,227	(3,823)
Intercompany									503	776	1,305
Net cash provided by operating activities									111,553	107,236	125,036
Cash Flows from Investing Activities:
Proceeds from wood mobile office divestiture, net											83,252
Cash paid for businesses acquired, net of cash acquired										(9,206)	(17,325)
Additions to rental fleet, excluding acquisitions									(52,115)	(46,471)	(52,366)
Proceeds from sale of rental fleet									11,432	11,976	14,777
Additions to property, plant and equipment, excluding acquisitions									(14,672)	(22,402)	(25,231)
Proceeds from sale of property, plant and equipment									149	2,053	8,985
Net cash used in investing activities									(55,206)	(64,050)	12,092
Cash Flows from Financing Activities:
Net repayments under lines of credit									(6,690)	(24,775)	(36,386)
Proceeds from issuance of 5.875% senior notes due 2024										250,000
Redemption of 7.875% senior notes due 2020										(200,000)
Debt extinguishment expense										(9,192)
Deferred financing costs									(12)	(5,369)	(4,683)
Principal payments on capital lease obligations									(7,364)	(6,399)	(4,173)
Issuance of common stock									5,800	468	1,703
Dividend payments									(40,171)	(36,402)	(33,700)
Purchase of treasury stock									(8,367)	(11,290)	(61,833)
Net cash used in financing activities									(56,804)	(42,959)	(139,072)
Net increase (decrease) in cash									(457)	227	(1,944)
Cash and cash equivalents at beginning of year				1,260				1,033	1,260	1,033	2,977
Cash and cash equivalents at end of year	803				1,260				803	1,260	1,033
Non-Guarantors
Cash Flows from Operating Activities:
Net (loss) income									18,307	20,652	21,177
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment charge and loss on divestiture, net											18
Provision for doubtful accounts									591	664	640
Amortization of deferred financing costs										8	58
Amortization of long-term liabilities											2
Share-based compensation expense									290	273	401
Depreciation and amortization									7,396	7,186	7,084
Gain on sale of rental fleet									(338)	(458)	(468)
Loss on disposal of property, plant and equipment									377	154	315
Deferred income taxes									2,268	2,921	3,203
Foreign currency transaction loss									25	18	2
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables									(82)	(3,778)	(839)
Inventories									(1,146)	900	(87)
Other assets									(57)	(45)	(853)
Accounts payable									(2,046)	1,169	(1,551)
Accrued liabilities									(989)	120	(19)
Intercompany									(503)	(776)	(1,305)
Net cash provided by operating activities									24,093	29,008	27,778
Cash Flows from Investing Activities:
Proceeds from wood mobile office divestiture, net											28
Cash paid for businesses acquired, net of cash acquired										(7,359)	(1,200)
Additions to rental fleet, excluding acquisitions									(11,573)	(10,901)	(22,366)
Proceeds from sale of rental fleet									1,521	1,703	2,088
Additions to property, plant and equipment, excluding acquisitions									(5,450)	(8,257)	(5,932)
Proceeds from sale of property, plant and equipment									702	711	875
Net cash used in investing activities									(14,800)	(24,103)	(26,507)
Cash Flows from Financing Activities:
Net repayments under lines of credit									(185)	(1,773)	(1,424)
Principal payments on capital lease obligations									(54)	(121)	(80)
Net cash used in financing activities									(239)	(1,894)	(1,504)
Effect of exchange rate changes on cash									717	(714)	51
Net increase (decrease) in cash									9,771	2,297	(182)
Cash and cash equivalents at beginning of year				$ 2,877				$ 580	2,877	580	762
Cash and cash equivalents at end of year	$ 12,648				$ 2,877				$ 12,648	$ 2,877	$ 580

Condensed Consolidating State96

Condensed Consolidating Statements of Cash Flows (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017	May 09, 2016
Senior Notes 5.875 Percent Due 2024
Condensed Cash Flow Statements Captions [Line Items]
Debt instrument interest rate	5.875%	5.875%
Debt instrument due year	2,024
Senior Notes 7.875 Percent Due 2020
Condensed Cash Flow Statements Captions [Line Items]
Debt instrument interest rate	7.875%		7.875%
Debt instrument due year	2,020

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - $ / shares	Jan. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Subsequent Event [Line Items]
Cash dividend declared		$ 0.91	$ 0.82	$ 0.75
Subsequent Event
Subsequent Event [Line Items]
Dividend declared date	Jan. 31, 2018
Cash dividend declared	$ 0.250
Dividend payable date	Mar. 14, 2018
Closing date of stockholders on record for dividend entitlement	Feb. 28, 2018