Mobile Mini (MINI) 10-Q 6 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 24, 2020
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Registrant Name	MOBILE MINI INC
Entity Central Index Key	0000911109
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		44,359,914
Entity File Number	1-12804
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-0748362
Entity Address, Address Line One	4646 E. Van Buren Street
Entity Address, Address Line Two	Suite 400
Entity Address, City or Town	Phoenix
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85008
City Area Code	480
Local Phone Number	894-6311
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Common Stock
Document Information [Line Items]
Security 12b Title	Common Stock, $.01 par value
Trading Symbol	MINI
Security Exchange Name	NASDAQ
Preferred Stock
Document Information [Line Items]
Security 12b Title	Preferred Share Purchase Rights
No Trading Symbol Flag	true

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 10,795	$ 8,053
Receivables, net of allowance for doubtful accounts of $5,081 and $4,622 at March 31, 2020 and December 31, 2019, respectively	99,259	104,390
Inventories	9,540	9,517
Rental fleet, net	960,177	966,223
Property, plant and equipment, net	153,824	157,183
Operating lease assets	91,521	93,116
Other assets	14,453	13,806
Intangibles, net	50,629	51,185
Goodwill	710,053	713,404
Total assets	2,100,251	2,116,877
Liabilities:
Accounts payable	40,299	31,554
Accrued liabilities	63,405	77,069
Operating lease liabilities	93,437	94,932
Lines of credit	557,500	555,400
Obligations under finance leases	75,533	74,399
Senior notes, net of deferred financing costs of $2,713 and $2,873 at March 31, 2020 and December 31, 2019, respectively	247,287	247,127
Deferred income taxes	198,420	195,034
Total liabilities	1,275,881	1,275,515
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, 50,630 issued and 44,379 outstanding at March 31, 2020 and 50,381 issued and 44,152 outstanding at December 31, 2019	506	504
Additional paid-in capital	641,515	638,083
Retained earnings	440,144	445,285
Accumulated other comprehensive loss	(79,478)	(65,093)
Treasury stock, at cost, 6,251 and 6,229 shares at March 31, 2020 and December 31, 2019, respectively	(178,317)	(177,417)
Total stockholders' equity	824,370	841,362
Total liabilities and stockholders' equity	$ 2,100,251	$ 2,116,877

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Receivables, allowance for doubtful accounts	$ 5,081	$ 4,622
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	50,630,000	50,381,000
Common stock, outstanding	44,379,000	44,152,000
Treasury stock, shares	6,251,000	6,229,000
Senior Notes
Deferred financing costs	$ 2,713	$ 2,873

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenues	$ 149,040	$ 149,661
Costs and expenses:
Depreciation and amortization	17,492	17,335
Total costs and expenses	124,852	114,171
Income from operations	24,188	35,490
Other income (expense):
Interest income	12
Interest expense	(9,257)	(10,760)
Deferred financing costs write-off		(123)
Foreign currency exchange	(3)	1
Income before income tax provision	14,940	24,608
Income tax provision	6,639	6,523
Net income	$ 8,301	$ 18,085
Earnings per share:
Basic	$ 0.19	$ 0.41
Diluted	$ 0.19	$ 0.40
Weighted average number of common and common share equivalents outstanding:
Basic	43,873	44,448
Diluted	44,386	44,877
Cash dividends declared per share	$ 0.30	$ 0.28
Rental
Revenues:
Revenues	$ 140,656	$ 142,172
Sales
Revenues:
Revenues	8,316	7,223
Costs and expenses:
Cost of sales	5,102	4,602
Other
Revenues:
Revenues	68	266
Rental Selling and General Expenses
Costs and expenses:
Cost of sales	$ 102,258	$ 92,234

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 8,301	$ 18,085
Foreign currency translation adjustment	(14,385)	5,105
Comprehensive (loss) income	$ (6,084)	$ 23,190

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning Balance at Dec. 31, 2018	$ 810,269	$ 500	$ 619,850	$ 410,641	$ (72,861)	$ (147,861)
Beginning Balance (Shares) at Dec. 31, 2018		44,690				5,296
Net income	18,085			18,085
Common stock dividends declared	(12,339)			(12,339)
Other comprehensive (loss) income	5,105				5,105
Exercise of stock options	1,690	$ 1	1,689
Exercise of stock options (Shares)		66
Purchase of treasury stock	(1,057)					$ (1,057)
Purchase of treasury stock (Shares)		(29)				29
Restricted stock grants, net		$ 2	(2)
Restricted stock grants, net (Shares)		248
Share-based compensation	3,404		3,404
Ending Balance at Mar. 31, 2019	825,157	$ 503	624,941	416,387	(67,756)	$ (148,918)
Ending Balance (Shares) at Mar. 31, 2019		44,975				5,325
Beginning Balance at Dec. 31, 2019	841,362	$ 504	638,083	445,285	(65,093)	$ (177,417)
Beginning Balance (Shares) at Dec. 31, 2019		44,152				6,229
Net income	8,301			8,301
Common stock dividends declared	(13,442)			(13,442)
Other comprehensive (loss) income	(14,385)				(14,385)
Exercise of stock options	$ 752		752
Exercise of stock options (Shares)	24	24
Purchase of treasury stock	$ (900)					$ (900)
Purchase of treasury stock (Shares)		(22)				22
Restricted stock grants, net		$ 2	(2)
Restricted stock grants, net (Shares)		225
Share-based compensation	2,682		2,682
Ending Balance at Mar. 31, 2020	$ 824,370	$ 506	$ 641,515	$ 440,144	$ (79,478)	$ (178,317)
Ending Balance (Shares) at Mar. 31, 2020		44,379				6,251

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 8,301	$ 18,085
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred financing costs write-off		123
Provision for doubtful accounts	955	1,212
Amortization of deferred financing costs	455	505
Amortization of long-term liabilities		13
Share-based compensation expense	2,682	3,404
Depreciation and amortization	17,492	17,335
Gain on sale of rental fleet	(1,444)	(1,425)
Loss on disposal of property, plant and equipment	26	18
Deferred income taxes	4,386	5,058
Foreign currency exchange	3	(1)
Changes in certain assets and liabilities:
Receivables	3,365	16,180
Inventories	(154)	76
Other assets	1,381	(1,394)
Accounts payable	9,490	(1,741)
Accrued liabilities	(13,715)	(18,665)
Net cash provided by operating activities	33,223	38,783
Cash flows from investing activities:
Cash paid for business acquired, net of cash acquired	(4,808)
Additions to rental fleet, excluding acquisitions	(10,051)	(23,016)
Proceeds from sale of rental fleet	3,474	3,338
Additions to property, plant and equipment, excluding acquisitions	(4,174)	(2,919)
Proceeds from sale of property, plant and equipment	15	49
Net cash used in investing activities	(15,544)	(22,548)
Cash flows from financing activities:
Net borrowings under lines of credit	2,100	203
Deferred financing costs		(3,254)
Principal payments on finance lease obligations	(3,204)	(2,586)
Issuance of common stock	753	1,690
Dividend payments	(13,575)	(12,426)
Purchase of treasury stock	(900)	(1,057)
Net cash used in financing activities	(14,826)	(17,430)
Effect of exchange rate changes on cash	(111)	(114)
Net increase (decrease) in cash	2,742	(1,309)
Cash and cash equivalents at beginning of period	8,053	5,605
Cash and cash equivalents at end of period	10,795	4,296
Supplemental disclosure of cash flow information:
Cash paid for interest	12,608	14,276
Cash paid for income and franchise taxes	1,913	2,020
Equipment and other acquired through finance lease obligations	4,343	1,609
Capital expenditures accrued or payable	$ 5,053	$ 8,012

Mobile Mini, Inc. - Organizatio

Mobile Mini, Inc. - Organization and Description of Business	3 Months Ended
	Mar. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Mobile Mini, Inc. - Organization and Description of Business	(1) Mobile Mini, Inc. - Organization and Description of Business Mobile Mini, Inc., a Delaware corporation, is a leading provider of portable storage solutions and tank and pump solutions. In these notes, the terms “Mobile Mini” the “Company,” “we,” “us,” and “our” refer to Mobile Mini, Inc. At March 31, 2020, we had a fleet of storage solutions units operating throughout the United States (the “U.S.”), Canada and the United Kingdom (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 rent 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 tank and pump solutions products, concentrated in the U.S. Gulf Coast, including liquid and solid containment units, serving a specialty sector in the industry. Our tank and pump products are rented 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. The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applicable to interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management of Mobile Mini, all adjustments (which include normal recurring adjustments) necessary to present fairly the financial position, results of operations, and cash flows for all periods presented have been made. The results of operations for the three months ended March 31, 2020 and 2019, respectively, are not necessarily indicative of the results to be expected for the full year. These condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements and accompanying notes thereto included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2019 filed with the Securities and Exchange Commission (“SEC”) on February 3, 2020. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying condensed 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. Recent Developments – Merger Agreement On March 1, 2020, Mobile Mini entered into a definitive merger agreement (the “Merger Agreement”) with WillScot Corporation (“WillScot”). The Merger Agreement provides for the merger of Mobile Mini with and into a newly formed subsidiary of WillScot, with Mobile Mini surviving as a wholly owned subsidiary (the Merger”). At the effective time of the Merger, and subject to the terms and conditions set forth in the Merger Agreement, each outstanding share of the common stock of Mobile Mini shall be converted into the right to receive 2.4050 shares of WillScot Class A common stock. The board of directors of both Mobile Mini and WillScot approved the Merger and the Merger Agreement and have recommended that their stockholders vote in favor of the adoption of the Merger Agreement. The Merger is subject to customary closing conditions, including receipt of regulatory and stockholder approvals by the Mobile Mini and WillScot stockholders, and is expected to close in the third quarter of 2020. In the Condensed Consolidated Statement of Income for the three months ended March 31, 2020, $15.5 million of merger-related expenses are included in the rental, selling and general expenses. Recent Developments – COVID-19 On January 30, 2020, the World Health Organization declared an outbreak of a highly contagious form of an upper respiratory infection caused by COVID-19, a novel coronavirus strain commonly referred to as “coronavirus”. Mobile Mini has been deemed an essential infrastructure business, which means we continue to supply our products and services in most of the areas in which we operate; however, federal and local guidelines and restrictions have significantly curtailed the level of economic activity in affected areas, which include the areas in which we conduct our business. See additional information regarding COVID-19 in “Item 1A. Risk Factors”.

Impact of Recently Issued Accou

Impact of Recently Issued Accounting Standards	3 Months Ended
	Mar. 31, 2020
Accounting Changes And Error Corrections [Abstract]
Impact of Recently Issued Accounting Standards	(2) Impact of Recently Issued Accounting Standards Intangibles – Goodwill and Other – Internal-Use Software . In August 2018, the Financial Accounting Standards Board (the “FASB”) issued a standard that provides guidance on accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software, and hosting arrangements that include an internal-use software license. This guidance also requires entities to present the expense related to the capitalized implementation costs in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement and classify payments for capitalized implementation costs in the statement of cash flows in the same manner as payments made for fees associated with the hosting element. The entity is also required to present the capitalized implementation costs in the statement of financial position in the same line item that a prepayment for the fees of the associated hosting arrangement would be presented. This standard is effective for annual and interim periods beginning after December 15, 2019. We adopted this standard on January 1, 2020. The adoption did not have a material effect on our consolidated financial statements. 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 is 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. We adopted this standard on January 1, 2020. The adoption did not have a material effect on our consolidated financial statements. Financial Instruments – Credit Losses. In June 2016, the FASB issued guidance amending the previous guidance on impairment of financial instruments. Among other things, the new guidance requires expectations of future credit losses to be based on relevant information from past events, including historical experience, current conditions and reasonable and supportable forecasts that affect collectability. This guidance does not apply to receivables arising from direct rental revenue related to our operating leases. The guidance will be effective for fiscal years and interim periods beginning after December 15, 2019. We adopted this standard utilizing a modified-retrospective approach on January 1, 2020. The adoption did not have a material effect on our consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	(3) 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 March 31, 2020 and December 31, 2019, 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. 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 finance leases at March 31, 2020 and December 31, 2019 approximated their respective book values. The fair value of our $250.0 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 the Senior Notes. The Senior Notes are presented on the balance sheet net of deferred financing costs. The gross carrying value and the fair value of our Senior Notes are as follows: March 31, 2020 December 31, 2019 (In thousands) Carrying value $ 250,000 $ 250,000 Fair value 240,000 260,938

Revenues

Revenues	3 Months Ended
	Mar. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenues	(4) Revenues Revenue Recognition A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. Rental revenue includes revenues associated with rental contracts with customers and may have multiple performance obligations including the direct rental of fleet to our customers, fleet delivery and pickup. Also included in rental revenues are ancillary fees including late charges and charges for damages. For contracts with multiple performance obligations, we allocate the contract’s transaction price to each performance obligation using the contractually stated price as our best estimate of the standalone selling price of each distinct promise in the contract. Our prices are determined using methods and assumptions developed consistently across similar customers and markets. We perform an ongoing collectability assessment of our accounts receivables and establish specific reserves when appropriate. Activity related to specific reserves is recorded as a reduction to revenue. 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, in accordance with lease accounting guidance. The rental continues until cancelled by the customer or the Company. 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. 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 delivery or pick up of a rented unit is recognized upon completion of the service in accordance with revenue recognition guidance and is included in the rental revenues financial statement caption. We may use third parties to satisfy our performance obligations, including both the provision of rental units and other services. To determine whether we are the principal or agent in the arrangement, we review each third-party relationship on a contract by contract basis. We are an agent when our role is to arrange for another entity to provide the rental units and other services to the customer. In these instances, we do not control the rental unit or service before it is provided. We are the principal when we control the rental unit or service prior to transferring control to the customer. Mobile Mini may be a principal in the fulfillment of some rental units and services and an agent for other rental units and services within the same contract. We recognize revenue on a gross basis when we are the principal in the arrangement and on a net basis when we are the agent. 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. Sales contracts generally have a single performance obligation that is satisfied at the time of delivery. Sales revenue is measured based on the consideration specified in the contract and recognized when the customer takes possession of the unit or other sale items. Our Storage Solutions rental customers are generally billed in advance. Additionally, we may bill our customers in advance for fleet pickup. Tank & Pump Solutions rental customers are typically billed in arrears, a minimum of once per month. Sales transactions are generally billed in advance or upon transfer of the sold items. Payments from customers are generally due upon receipt of the invoice. Certain customers have extended terms for payment, but no terms are greater than one year following the invoice date. Taxes assessed by a governmental authority that are both imposed and concurrent with a specific revenue-producing transaction, that are collected by the Company from a customer, are excluded from revenue. Contract Costs and Liabilities When customers are billed in advance, we defer recognition of revenue and reflect unearned rental revenue at the end of the period. As of March 31, 2020 and December 31, 2019, we had approximately $38.6 million and $41.2 million, respectively, of unearned rental revenue included in accrued liabilities in the Condensed Consolidated Balance Sheets for March 31, 2020 and December 31, 2019. We expect to perform the remaining performance obligations and recognize the unearned rental revenue within the next twelve months. Disaggregated Rental Revenue In the following table, rental revenue is disaggregated by the nature of the underlying service provided and for the periods indicated. The table also includes a reconciliation of the disaggregated rental revenue to our reportable segments. For the Three Months Ended March 31, 2020 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Direct rental revenue $ 71,388 $ 12,819 $ 84,207 $ 17,638 $ 101,845 Delivery, pickup and similar revenue 21,824 4,381 26,205 7,721 33,926 Ancillary rental revenue 3,257 1,075 4,332 553 4,885 Total rental revenues $ 96,469 $ 18,275 $ 114,744 $ 25,912 $ 140,656 For the Three Months Ended March 31, 2019 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Direct rental revenue $ 68,475 $ 13,281 $ 81,756 $ 20,109 $ 101,865 Delivery, pickup and similar revenue 21,789 4,676 26,465 8,594 35,059 Ancillary rental revenue 3,252 1,252 4,504 744 5,248 Total rental revenues $ 93,516 $ 19,209 $ 112,725 $ 29,447 $ 142,172

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	(5) 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 include 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: Three Months Ended March 31, 2020 2019 (In thousands, except per share data) Numerator: Net income $ 8,301 $ 18,085 Denominator: Weighted average shares outstanding - basic 43,873 44,448 Dilutive effect of share-based awards 513 429 Weighted average shares outstanding - diluted 44,386 44,877 Earnings per share: Basic $ 0.19 $ 0.41 Diluted 0.19 0.40 The following table represents the effect of stock options and restricted share awards that were issued or outstanding but excluded in calculating diluted EPS because their effect would have been anti-dilutive for the period indicated, or the underlying performance criteria had not yet been met: Three Months Ended March 31, 2020 2019 (In thousands) Stock options 811 1,504 Restricted share awards 106 75 Total 917 1,579

Acquisition

Acquisition	3 Months Ended
	Mar. 31, 2020
Business Combinations [Abstract]
Acquisition	(6) Acquisition During the three months ended March 31, 2020, we completed one acquisition of a portable storage business which further strengthened our business in Dallas, Texas. The accompanying condensed consolidated financial statements include the operations of the acquired business from the date of acquisition. The aggregate purchase price for the assets acquired were preliminarily allocated based on their estimated fair values at the date of the acquisition. We have not disclosed the pro-forma impact of the acquisition on operations as it was immaterial to our financial position or results of operations in aggregate. The components of the purchase price and net assets acquired during the three months ended March 31, 2020 are as follows (in thousands): Net Assets Acquired Rental fleet $ 3,265 Intangible assets: Customer relationships 950 Non-compete agreements 50 Goodwill 570 Other assets 66 Liabilities (93 ) Total purchase price $ 4,808

Inventories

Inventories	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Inventories	(7) Inventories Inventories at March 31, 2020 and December 31, 2019 consisted of the following: March 31, 2020 December 31, 2019 (In thousands) Raw materials and supplies $ 7,549 $ 6,957 Finished units 1,991 2,560 Inventories $ 9,540 $ 9,517

Rental Fleet

Rental Fleet	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Rental Fleet	(8) Rental Fleet Rental fleet is capitalized at cost and depreciated over the estimated useful life of the unit using the straight-line method. Rental fleet is depreciated whether or not it is out on rent. Capitalized cost of rental fleet includes the price paid to acquire the unit and freight charges to the location when the unit is first placed in service, and when applicable, the cost of manufacturing or remanufacturing, which includes the cost of customizing units. Ordinary repair and maintenance costs are charged to operations as incurred. 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. 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 August 31, 2019, management estimates that the net orderly liquidation appraisal value as of March 31, 2020 was approximately $1.0 billion. Our net book value for this fleet as of March 31, 2020 was also $1.0 billion. Depreciation expense related to our rental fleet for the three months ended March 31, 2020 and 2019 was $7.8 million and $7.7 million, respectively. At March 31, 2020, all rental fleet units were pledged as collateral under our Second Amended and Restated ABL Credit Agreement dated as of March 22, 2019 (the “Credit Agreement”) with Deutsche Bank AG New York Branch (“Deutsche Bank”), as administrative agent, and the other lenders party thereto. Rental fleet consisted of the following at March 31, 2020 and December 31, 2019: Residual as Percentage of Original Cost (1) Estimated Useful Life in Years March 31, 2020 December 31, 2019 (In thousands) Storage Solutions: Steel storage containers 55% 30 $ 624,731 $ 627,230 Steel ground level offices 55 30 364,429 366,630 Other 6,122 6,565 Total 995,282 1,000,425 Accumulated depreciation (168,564 ) (166,565 ) Total Storage Solutions fleet, net $ 826,718 $ 833,860 Tank & Pump Solutions: Steel tanks 25 $ 82,264 $ 82,015 Roll-off boxes 15 - 20 35,576 35,398 Stainless steel tank trailers 25 31,292 29,716 Vacuum boxes 20 17,242 16,775 Dewatering boxes 20 10,233 9,486 Pumps and filtration equipment 7 15,031 14,343 Other 9,896 9,776 Total 201,534 197,509 Accumulated depreciation (68,075 ) (65,146 ) Total Tank & Pump Solutions fleet, net $ 133,459 $ 132,363 Total rental fleet, net $ 960,177 $ 966,223 (1) Tank & Pump Solutions fleet has been assigned zero residual value.

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2020
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	(9) Property, Plant and Equipment Property, plant and equipment are stated at cost, net of accumulated depreciation 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 the three months ended March 31, 2020 and 2019 was $8.2 million and $8.0 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 Condensed Consolidated Statements of Income. Property, plant and equipment at March 31, 2020 and December 31, 2019 consisted of the following: Residual Value as Percentage of Original Cost Estimated Useful Life in Years March 31, 2020 December 31, 2019 (In thousands) Land $ 1,626 $ 1,653 Vehicles and machinery 0 - 55% 5 - 30 176,148 174,191 Buildings and improvements (1) 0 - 25 3 - 30 32,721 33,137 Computer equipment and software 0 3 - 10 78,675 76,587 Furniture and office equipment 0 3 - 10 4,975 5,354 Property, plant and equipment 294,145 290,922 Accumulated depreciation (140,321 ) (133,739 ) Property, plant and equipment, net $ 153,824 $ 157,183 (1) Improvements made to leased properties are depreciated over the lesser of the estimated remaining life or the remaining term of the respective lease.

Goodwill and Intangibles

Goodwill and Intangibles	3 Months Ended
	Mar. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangibles	(10) Goodwill and Intangibles 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 $710.1 million total goodwill at March 31, 2020, $474.8 million related to the North America Storage Solutions segment, $54.0 million related to the U.K. Storage Solutions segment and $181.2 million related to the Tank & Pump Solutions segment. The following table shows the activity and balances related to goodwill from January 1, 2020 to March 31, 2020 (in thousands): Balance at January 1, 2020 $ 713,404 Acquisition 570 Foreign currency (3,921 ) Balance at March 31, 2020 $ 710,053 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. When the intangible reaches the end of its life and no longer has value to the Company, the gross carrying amount and the related accumulated amortization is removed from our balance sheet. The following table reflects balances related to intangible assets for the periods presented: March 31, 2020 December 31, 2019 Estimated Useful Life in Years Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) Customer relationships 15 - 20 $ 95,287 $ (45,833 ) $ 49,454 $ 94,808 $ (44,846 ) $ 49,962 Trade names/trademarks 5 - 7 5,200 (4,246 ) 954 5,200 (4,164 ) 1,036 Non-compete agreements 5 300 (103 ) 197 1,810 (1,648 ) 162 Other 20 59 (35 ) 24 60 (35 ) 25 Total $ 100,846 $ (50,217 ) $ 50,629 $ 101,878 $ (50,693 ) $ 51,185 Amortization expense for amortizable intangibles was approximately $1.5 million and $1.6 million for the three-month periods ended March 31, 2020 and 2019, respectively. Based on the carrying value at March 31, 2020, future amortization of intangible assets is expected to be as follows for the years ended December 31 (in thousands): 2020 (remaining) $ 4,660 2021 5,626 2022 5,163 2023 4,491 2024 4,105 Thereafter 26,584 Total $ 50,629

Debt

Debt	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Debt	(11) Debt Lines of Credit On March 22, 2019, Mobile Mini and certain of its subsidiaries entered into the Second Amended and Restated ABL Credit Agreement dated as of March 22, 2019 (the “Credit Agreement”) with Deutsche Bank AG New York Branch (“Deutsche Bank”), as administrative agent, and the other lenders party thereto. The Credit Agreement provides for a $1 billion first lien senior secured revolving credit facility, which is for borrowing in U.S. Dollars (the “U.S. Subfacility”), in British Pounds and Euros (the “U.K. Subfacility”), and in Canadian Dollars (the “Canadian Subfacility”). The U.S. Subfacility is subject to, among other things, the terms of a borrowing base calculated as a discount to the value of certain pledged U.S. collateral; the U.K. Subfacility is subject to a similar borrowing base that includes certain pledged U.K. collateral; and the Canadian Subfacility is subject to a similar borrowing base that includes certain pledged Canadian collateral. Under the terms of the Credit Agreement, certain real property will require an appraisal before the value can be considered in the borrowing base of the respective subfacilities. All three borrowing bases are subject to certain reserves and caps customary for financings of this type. The Credit Agreement has an accordion feature that permits, under certain conditions, an increase of up to $500 million of additional commitments. If at any time the aggregate amounts outstanding under the subfacilities exceed the respective borrowing base then in effect, a prepayment of an amount sufficient to eliminate such excess is required to be made. Mobile Mini has the right to prepay loans under the Credit Agreement in whole or in part at any time. All amounts borrowed under the Credit Agreement must be repaid on or before March 22, 2024. The Credit Agreement also provides for the issuance of irrevocable standby letters of credit by U.S. lenders in amounts totaling up to $50 million, by U.K.-based lenders in amounts totaling up to $20 million and by Canadian-based lenders in amounts totaling up to $20 million. Loans made under the (i) U.S. Subfacility bear interest at a rate equal to, at Mobile Mini’s option, either (a) the London interbank offered rate (“LIBOR”) plus an applicable margin (“LIBOR Loans”) or (b) the prime rate plus an applicable margin (“Base Rate Loans”); (ii) U.K. Subfacility denominated in British Pounds bear interest at LIBOR plus an applicable margin and loans denominated in Euros bear interest at the Euro interbank offered rate plus an applicable margin; and (iii) Canadian Subfacility bear interest at a rate equal to, at Mobile Mini’s option, either (a) the Canadian prime rate plus an applicable margin or (b) the Canadian Dollar bankers’ acceptance rate plus an applicable margin. As of March 31, 2020, the applicable margins are 1.50% for LIBOR Loans and 0.50% for Base Rate Loans. Mobile Mini is also required to pay an unused line fee in respect of the unutilized commitments under the Credit Agreement at a fee rate of 0.225% per annum, as well as customary letter of credit fees. Ongoing extensions of credit under the Credit Agreement are subject to customary conditions, including sufficient availability under the respective borrowing base. The Credit Agreement also contains various financial and nonfinancial covenants which require Mobile Mini to, among other things, comply with a minimum fixed charge coverage ratio of 1.00 to 1.00 as of the last day of each quarter, upon specified excess availability 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 March 31, 2020, 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 U.S. Subfacility is guaranteed by Mobile Mini and certain of its domestic subsidiaries. The U.K. Subfacility and the Canadian Subfacility are guaranteed by Mobile Mini and certain of its domestic and foreign subsidiaries. The U.S. Subfacility is secured by a first priority lien on substantially all assets of Mobile Mini and the guarantors of such subfacility. The U.K. and Canadian Subfacilities are secured by a first priority lien on substantially all of the assets of the borrowers and the guarantors of such subfacilities. The Credit Agreement also includes other covenants, representations, warranties, indemnities, and events of default that are customary for facilities of this type, including events of default relating to a change of control of Mobile Mini. Senior Notes We have outstanding $250.0 million aggregate principal amount of 2024 Notes issued at their face value on May 9, 2016. The 2024 Notes bear interest at a rate of 5.875% per year and mature on July 1, 2024. Interest on the 2024 Notes is payable semiannually in arrears on January 1 and July 1. 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 Finance Leases At March 31, 2020 and December 31, 2019, obligations under finance leases for certain real property and transportation related equipment were $75.5 million and $74.4 million, respectively. See additional information in Note 12. Future Debt Obligations The scheduled maturity for debt obligations for balances outstanding at March 31, 2020 are as follows: Lines of Credit Senior Notes Finance Lease Obligations Total (In thousands) 2020 (remaining) $ — $ — $ 11,283 $ 11,283 2021 — — 14,263 14,263 2022 — — 13,250 13,250 2023 — — 11,854 11,854 2024 557,500 250,000 8,270 815,770 Thereafter — — 16,613 16,613 Total $ 557,500 $ 250,000 $ 75,533 $ 883,033

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	(12) Leases Real Estate We lease our corporate and administrative offices in Phoenix, Arizona and our U.K. headquarters in Stockton-on-Tees. We also lease field locations throughout the U.S. and the U.K., as well as two in Canada. Many real estate leases include one or more options to renew. The exercise of lease renewal options is generally at our discretion and we assess the initial lease term based on the term that we are reasonably certain to occupy the leased property. None of our real estate leases contain residual value guarantees or purchase options. The majority of our real estate leases are operating leases. Equipment Leases Mobile Mini also engages in leases related to ancillary equipment to support our field operations; such as, forklifts, trucks, service vehicles and automobiles. These leases often include an option to purchase the equipment at the end of the lease and are generally finance leases. In addition, we have leases for certain office equipment. Lease Assets and Liabilities For leases with an initial term greater than twelve months, we recognize a lease asset and liability at commencement date. Lease assets are initially measured at cost, which includes the initial amount of the lease liability, plus any initial direct costs incurred, less lease incentives received. In our Condensed Consolidated Balance Sheets, finance lease assets are included in property, plant and equipment. For operating leases, the liability is initially and subsequently measured as the present value of the unpaid lease payments. For finance lease liabilities, the lease liability is also initially measured as the present value of the unpaid lease payments and is subsequently measured at amortized cost using the effective interest method.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	(13) Income Taxes 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 March 31, 2020, we are no longer subject to examination by U.S. federal tax authorities for years prior to 2016, to examination for any U.S. state taxing authority prior to 2014, or to examination for any foreign jurisdictions prior to 2015. All subsequent periods remain open to examination. Our effective income tax rate increased to 44.4% for the three months ended March 31, 2020, compared to 26.5% for the prior-year period. The increase in the effective tax rate was primarily due to non-deductible costs incurred during the quarter related to our proposed merger with WillScot. 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 March 31, 2020, the Company had $0.5 million of unrecognized tax benefits, all of which would affect the effective tax rate if recognized. A reconciliation of the beginning and ending balance of unrecognized tax benefits is as follows: 2020 (In thousands) Beginning balance $ 515 Additions based on tax positions related to prior years — Ending balance $ 515 All of the unrecognized tax benefits outstanding at March 31, 2020 are expected to reverse within the next twelve months. Our policy for recording interest and penalties associated with audits is to record such items as a component of income before taxes. Penalties and associated interest costs, if any, are recorded in rental, selling and general expenses in our Condensed Consolidated Statements of Income.

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	(14) 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. Share-based compensation plans are approved by our stockholders and administered by the stock compensation committee of the Company’s Board of Directors (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 grant. As of March 31, 2020, 0.8 million shares are available for future grants, assuming performance-based awards vest at their target amount. 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 performance-based awards granted from 2017 through 2020 vest contingently over a three-year 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 generally results in a higher expense during the earlier years of vesting. Expense related to performance-based awards is recognized based upon anticipated attainment. All share-based compensation was included in rental, selling and general expenses for the three months ended March 31, 2020 and 2019. As of March 31, 2020, the Company did not have any unvested stock options. As of March 31, 2020, the unrecognized compensation cost related to restricted stock awards assuming achievement at target was approximately $13.2 million, which is expected to be recognized over a weighted-average period of approximately 1.8 years. Stock Options. No new stock option grants were made in the three months ended March 31, 2020 and there are no unvested stock options as of March 31, 2020. The following table summarizes stock option activity for the three months ended March 31, 2020: Total Options Weighted Average Exercise Price (In thousands) Options outstanding, beginning of period 3,010 $ 32.53 Additional options awarded based upon achievement of specified performance criteria 106 32.43 Canceled/Expired (6 ) 42.87 Exercised (24 ) 30.92 Options outstanding, end of period 3,086 32.52 Due to actual performance exceeding targets, shares granted in 2017 that contingently vested based upon 2019 performance criteria vested above target at 200% resulting in additional awards. A summary of stock options outstanding as of March 31, 2020 is as follows: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Terms Aggregate Intrinsic Value (I n (In years) (In thousands) Outstanding and Exercisable 3,086 $ 32.52 4.08 $ 163,417 The aggregate intrinsic value of options exercised during the three months ended March 31, 2020 was approximately $0.3 million. 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 award activity for the three months ended March 31, 2020 is as follows: Number of Shares Performance- Based Awards Service-Based Awards Total Awards Weighted Average Grant Date Fair Value (In thousands) Restricted stock awards at beginning of period 172 259 431 $ 36.06 Awarded 91 91 182 39.28 Additional shares awarded based upon achievement of specified performance criteria 52 — 52 40.53 Released (119 ) (98 ) (217 ) 36.00 Forfeited (4 ) (5 ) (9 ) 37.50 Restricted stock awards at end of period 192 247 439 37.77 Unvested target stock awards that vest based upon 2020 performance conditions 96 Unvested target stock awards that vest based upon 2021 performance conditions 67 Unvested target stock awards that vest based upon 2022 performance conditions 29 Due to actual performance exceeding targets, shares granted in 2019 and 2018 that contingently vested based upon 2019 performance criteria vested above target at 163% and 200%, respectively, resulting in additional share awards. The restricted stock awards that vested during the three months ended March 31, 2020 had an aggregate grant date fair value of $7.8 million and an aggregate vesting date fair value of $8.9 million.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	(15) Commitments and Contingencies 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	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Stockholders' Equity	(16) Stockholders’ Equity Dividends The Board authorized and declared cash dividends to all of our common stockholders as follows: Declaration Date Payment Date Record Date (close of business) Dividend Amount Per Share of Common Stock January 27, 2020 March 11, 2020 February 26, 2020 $ 0.303 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. During the three months ended March 31, 2020, we did not purchase shares of our common stock under the authorized share repurchase. Approximately $42.4 million is available for repurchase as of March 31, 2020. We withheld approximately 22,000 shares of stock from employees, for an approximate value of $0.9 million, upon vesting of share awards to satisfy tax withholding obligations during the three months ended March 31, 2020.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Segment Reporting	(17) Segment Reporting Our operations are comprised of three reportable segments: North America Storage Solutions, U.K. Storage Solutions 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., the U.K. and Canada. All of our locations operate in their local currency. 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 $128.0 million for both the three months ended March 31, 2020 and 2019. The following tables set forth certain information regarding each of the Company’s segments for the three-month periods indicated: For the Three Months Ended March 31, 2020 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 96,469 $ 18,275 $ 114,744 $ 25,912 $ 140,656 Sales 5,284 1,922 7,206 1,110 8,316 Other 39 — 39 29 68 Total revenues 101,792 20,197 121,989 27,051 149,040 Costs and expenses: Rental, selling and general expenses 71,288 12,395 83,683 18,575 102,258 Cost of sales 3,061 1,477 4,538 564 5,102 Depreciation and amortization 9,305 1,770 11,075 6,417 17,492 Total costs and expenses 83,654 15,642 99,296 25,556 124,852 Income from operations $ 18,138 $ 4,555 $ 22,693 $ 1,495 $ 24,188 Interest expense, net of interest income $ 6,462 $ 107 $ 6,569 $ 2,676 $ 9,245 Income tax provision (benefit) 6,251 775 7,026 (387 ) 6,639 Capital expenditures for additions to rental fleet, excluding acquisitions 5,200 337 5,537 4,514 10,051 For the Three Months Ended March 31, 2019 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 93,516 $ 19,209 $ 112,725 $ 29,447 $ 142,172 Sales 4,026 1,751 5,777 1,446 7,223 Other 225 — 225 41 266 Total revenues 97,767 20,960 118,727 30,934 149,661 Costs and expenses: Rental, selling and general expenses 58,956 13,670 72,626 19,608 92,234 Cost of sales 2,413 1,403 3,816 786 4,602 Depreciation and amortization 8,989 1,734 10,723 6,612 17,335 Total costs and expenses 70,358 16,807 87,165 27,006 114,171 Income from operations $ 27,409 $ 4,153 $ 31,562 $ 3,928 $ 35,490 Interest expense, net of interest income $ 7,930 $ 135 $ 8,065 $ 2,695 $ 10,760 Income tax provision 5,395 764 6,159 364 6,523 Capital expenditures for additions to rental fleet, excluding acquisitions 11,841 921 12,762 10,254 23,016 Assets related to the Company’s reportable segments include the following: Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) As of March 31, 2020: Goodwill $ 474,809 $ 54,028 $ 528,837 $ 181,216 $ 710,053 Intangibles, net 3,234 219 3,453 47,176 50,629 Rental fleet, net 691,995 134,723 826,718 133,459 960,177 As of December 31, 2019: Goodwill $ 474,622 $ 57,566 $ 532,188 $ 181,216 $ 713,404 Intangibles, net 2,518 256 2,774 48,411 51,185 Rental fleet, net 689,424 144,436 833,860 132,363 966,223 Included in the table above are assets in the U.S. of $1.5 billion as of both March 31, 2020 and December 31, 2019.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	(18) Subsequent Events Declaration of Quarterly Dividend On April 29, 2020, the Company’s Board authorized and declared a quarterly dividend to all of our common stockholders of $0.303 per share of common stock, payable on May 27, 2020, to all stockholders of record as of the close of business on May 13, 2020.

Condensed Consolidating Financi

Condensed Consolidating Financial Information	3 Months Ended
	Mar. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Condensed Consolidating Financial Information	(19) Condensed Consolidating Financial Information The following tables reflect the condensed consolidating financial information of the Company’s subsidiary guarantors of the Senior Notes and its non-guarantor subsidiaries. Separate financial statements of the subsidiary guarantors are not presented because the guarantee by each 100% owned subsidiary guarantor is full and unconditional, joint and several, subject to customary exceptions, and management has determined that such information is not material to investors. MOBILE MINI, INC. CONDENSED CONSOLIDATING BALANCE SHEETS As of March 31, 2020 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated ASSETS Cash and cash equivalents $ 1,001 $ 9,794 $ — $ 10,795 Receivables, net 85,223 14,036 — 99,259 Inventories 7,868 1,672 — 9,540 Rental fleet, net 818,468 141,709 — 960,177 Property, plant and equipment, net 129,846 23,978 — 153,824 Operating lease assets 70,553 20,968 — 91,521 Other assets 13,419 1,034 — 14,453 Intangibles, net 50,403 226 — 50,629 Goodwill 651,707 58,346 — 710,053 Intercompany receivables 145,874 32,160 (178,034 ) — Total assets $ 1,974,362 $ 303,923 $ (178,034 ) $ 2,100,251 LIABILITIES AND STOCKHOLDERS' Liabilities: Accounts payable $ 35,265 $ 5,034 $ — $ 40,299 Accrued liabilities 55,897 7,508 — 63,405 Operating lease liabilities 73,108 20,329 — 93,437 Lines of credit 557,500 — — 557,500 Obligations under finance leases 75,465 68 — 75,533 Senior notes, net 247,287 — — 247,287 Deferred income taxes 179,796 18,624 — 198,420 Intercompany payables 29,824 211 (30,035 ) — Total liabilities 1,254,142 51,774 (30,035 ) 1,275,881 Commitments and contingencies Stockholders' equity: Common stock 506 — — 506 Additional paid-in capital 641,515 147,999 (147,999 ) 641,515 Retained earnings 256,516 183,628 — 440,144 Accumulated other comprehensive loss — (79,478 ) — (79,478 ) Treasury stock, at cost (178,317 ) — — (178,317 ) Total stockholders' equity 720,220 252,149 (147,999 ) 824,370 Total liabilities and stockholders' equity $ 1,974,362 $ 303,923 $ (178,034 ) $ 2,100,251 MOBILE MINI, INC. CONDENSED CONSOLIDATING BALANCE SHEETS As of December 31, 2019 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated ASSETS Cash and cash equivalents $ 559 $ 7,494 $ — $ 8,053 Receivables, net 90,153 14,237 — 104,390 Inventories 7,210 2,307 — 9,517 Rental fleet, net 814,129 152,094 — 966,223 Property, plant and equipment, net 132,532 24,651 — 157,183 Operating lease assets 69,911 23,205 — 93,116 Other assets 12,531 1,275 — 13,806 Intangibles, net 50,920 265 — 51,185 Goodwill 651,137 62,267 — 713,404 Intercompany receivables 146,008 31,829 (177,837 ) — Total assets $ 1,975,090 $ 319,624 $ (177,837 ) $ 2,116,877 LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities: Accounts payable $ 25,156 $ 6,398 $ — $ 31,554 Accrued liabilities 68,916 8,153 — 77,069 Operating lease liabilities 72,453 22,479 94,932 Lines of credit 555,400 — — 555,400 Obligations under finance leases 74,319 80 — 74,399 Senior notes, net 247,127 — — 247,127 Deferred income taxes 175,291 19,743 — 195,034 Intercompany payables 29,782 56 (29,838 ) — Total liabilities 1,248,444 56,909 (29,838 ) 1,275,515 Commitments and contingencies Stockholders' equity: Common stock 504 — — 504 Additional paid-in capital 638,083 147,999 (147,999 ) 638,083 Retained earnings 265,476 179,809 — 445,285 Accumulated other comprehensive loss — (65,093 ) — (65,093 ) Treasury stock, at cost (177,417 ) — — (177,417 ) Total stockholders' equity 726,646 262,715 (147,999 ) 841,362 Total liabilities and stockholders' equity $ 1,975,090 $ 319,624 $ (177,837 ) $ 2,116,877 MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF INCOME Three months ended March 31, 2020 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 121,576 $ 19,080 $ — $ 140,656 Sales 6,353 1,963 — 8,316 Other 68 — — 68 Total revenues 127,997 21,043 — 149,040 Costs and expenses: Rental, selling and general expenses 89,234 13,024 — 102,258 Cost of sales 3,600 1,502 — 5,102 Depreciation and amortization 15,650 1,842 — 17,492 Total costs and expenses 108,484 16,368 — 124,852 Income from operations 19,513 4,675 — 24,188 Other income (expense): Interest income 6 6 — 12 Interest expense (9,143 ) (114 ) — (9,257 ) Foreign currency exchange 2 (5 ) — (3 ) Income before income tax provision 10,378 4,562 — 14,940 Income tax provision 5,895 744 — 6,639 Net income $ 4,483 $ 3,818 $ — $ 8,301 MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Three months ended March 31, 2020 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net income $ 4,483 $ 3,818 $ — $ 8,301 Foreign currency translation adjustment — (14,385 ) — (14,385 ) Comprehensive income (loss) $ 4,483 $ (10,567 ) $ — $ (6,084 ) MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF INCOME Three months ended March 31, 2019 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 122,269 $ 19,903 $ — $ 142,172 Sales 5,457 1,766 — 7,223 Other 266 — — 266 Total revenues 127,992 21,669 — 149,661 Costs and expenses: Rental, selling and general expenses 77,962 14,272 — 92,234 Cost of sales 3,188 1,414 — 4,602 Depreciation and amortization 15,518 1,817 — 17,335 Total costs and expenses 96,668 17,503 — 114,171 Income from operations 31,324 4,166 — 35,490 Other income (expense): Interest expense (10,626 ) (134 ) — (10,760 ) Deferred financing costs write-off (123 ) — — (123 ) Foreign currency exchange — 1 — 1 Income before income tax provision 20,575 4,033 — 24,608 Income tax provision 5,751 772 — 6,523 Net income $ 14,824 $ 3,261 $ — $ 18,085 MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME Three months ended March 31, 2019 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net income $ 14,824 $ 3,261 $ — $ 18,085 Foreign currency translation adjustment — 5,105 — 5,105 Comprehensive income $ 14,824 $ 8,366 $ — $ 23,190 MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Three months ended March 31, 2020 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash flows from operating activities: Net income $ 4,483 $ 3,818 $ — $ 8,301 Adjustments to reconcile net income to net cash provided by operating activities: Provision for doubtful accounts 872 83 — 955 Amortization of deferred financing costs 455 — — 455 Share-based compensation expense 2,614 68 — 2,682 Depreciation and amortization 15,650 1,842 — 17,492 Gain on sale of rental fleet units (1,304 ) (140 ) — (1,444 ) Loss on disposal of property, plant and equipment 26 — — 26 Deferred income taxes 4,272 114 — 4,386 Foreign currency exchange (2 ) 5 — 3 Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables 4,125 (760 ) — 3,365 Inventories (658 ) 504 — (154 ) Other assets 1,197 184 — 1,381 Accounts payable 10,644 (1,154 ) — 9,490 Accrued liabilities (13,634 ) (81 ) — (13,715 ) Intercompany 464 (464 ) — — Net cash provided by operating activities 29,204 4,019 — 33,223 Cash flows from investing activities: Cash paid for business acquired, net of cash acquired (4,808 ) — — (4,808 ) Additions to rental fleet, excluding acquisitions (9,673 ) (378 ) — (10,051 ) Proceeds from sale of rental fleet 2,889 585 — 3,474 Additions to property, plant and equipment, excluding acquisitions (2,367 ) (1,807 ) — (4,174 ) Proceeds from sale of property, plant and equipment 15 — — 15 Net cash used in investing activities (13,944 ) (1,600 ) — (15,544 ) Cash flows from financing activities: Net borrowings under lines of credit 2,100 — — 2,100 Principal payments on finance lease obligations (3,196 ) (8 ) — (3,204 ) Issuance of common stock 753 — — 753 Dividend payments (13,575 ) — — (13,575 ) Purchase of treasury stock (900 ) — — (900 ) Net cash used in financing activities (14,818 ) (8 ) — (14,826 ) Effect of exchange rate changes on cash — (111 ) — (111 ) Net increase in cash 442 2,300 — 2,742 Cash and cash equivalents at beginning of period 559 7,494 — 8,053 Cash and cash equivalents at end of period $ 1,001 $ 9,794 $ — $ 10,795 MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Three months ended March 31, 2019 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash flows from operating activities: Net income $ 14,824 $ 3,261 $ — $ 18,085 Adjustments to reconcile net income to net cash provided by operating activities: Deferred financing costs write-off 123 — — 123 Provision for doubtful accounts 1,105 107 — 1,212 Amortization of deferred financing costs 505 — — 505 Amortization of long-term liabilities 13 — — 13 Share-based compensation expense 3,208 196 — 3,404 Depreciation and amortization 15,518 1,817 — 17,335 Gain on sale of rental fleet units (1,273 ) (152 ) — (1,425 ) Loss on disposal of property, plant and equipment 21 (3 ) — 18 Deferred income taxes 4,931 127 — 5,058 Foreign currency exchange — (1 ) — (1 ) Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables 15,776 404 — 16,180 Inventories 342 (266 ) — 76 Other assets (1,580 ) 186 — (1,394 ) Accounts payable (1,282 ) (459 ) — (1,741 ) Accrued liabilities (18,735 ) 70 — (18,665 ) Intercompany (92 ) 92 — — Net cash provided by operating activities 33,404 5,379 — 38,783 Cash flows from investing activities: Additions to rental fleet, excluding acquisitions (22,098 ) (918 ) — (23,016 ) Proceeds from sale of rental fleet 2,698 640 — 3,338 Additions to property, plant and equipment, excluding acquisitions (1,863 ) (1,056 ) — (2,919 ) Proceeds from sale of property, plant and equipment 28 21 — 49 Net cash used in investing activities (21,235 ) (1,313 ) — (22,548 ) Cash flows from financing activities: Net borrowings (repayments) under lines of credit 4,388 (4,185 ) — 203 Deferred financing costs (3,254 ) — — (3,254 ) Principal payments on finance lease obligations (2,583 ) (3 ) — (2,586 ) Issuance of common stock 1,690 — — 1,690 Dividend payments (12,426 ) — — (12,426 ) Purchase of treasury stock (1,057 ) — — (1,057 ) Net cash used in financing activities (13,242 ) (4,188 ) — (17,430 ) Effect of exchange rate changes on cash — (114 ) — (114 ) Net decrease in cash (1,073 ) (236 ) — (1,309 ) Cash and cash equivalents at beginning of period 1,483 4,122 — 5,605 Cash and cash equivalents at end of period $ 410 $ 3,886 $ — $ 4,296

Mobile Mini, Inc. - Organizat_2

Mobile Mini, Inc. - Organization and Description of Business (Policies)	3 Months Ended
	Mar. 31, 2020
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. The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applicable to interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management of Mobile Mini, all adjustments (which include normal recurring adjustments) necessary to present fairly the financial position, results of operations, and cash flows for all periods presented have been made. The results of operations for the three months ended March 31, 2020 and 2019, respectively, are not necessarily indicative of the results to be expected for the full year. These condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements and accompanying notes thereto included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2019 filed with the Securities and Exchange Commission (“SEC”) on February 3, 2020.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying condensed 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.
Recent Developments – Merger Agreement	On March 1, 2020, Mobile Mini entered into a definitive merger agreement (the “Merger Agreement”) with WillScot Corporation (“WillScot”).  The Merger Agreement provides for the merger of Mobile Mini with and into a newly formed subsidiary of WillScot, with Mobile Mini surviving as a wholly owned subsidiary (the Merger”).  At the effective time of the Merger, and subject to the terms and conditions set forth in the Merger Agreement, each outstanding share of the common stock of Mobile Mini shall be converted into the right to receive 2.4050 shares of WillScot Class A common stock. The board of directors of both Mobile Mini and WillScot approved the Merger and the Merger Agreement and have recommended that their stockholders vote in favor of the adoption of the Merger Agreement.  The Merger is subject to customary closing conditions, including receipt of regulatory and stockholder approvals by the Mobile Mini and WillScot stockholders, and is expected to close in the third quarter of 2020.  In the Condensed Consolidated Statement of Income for the three months ended March 31, 2020, $15.5 million of merger-related expenses are included in the rental, selling and general expenses.
Recent Developments Covid-19	Recent Developments – COVID-19 On January 30, 2020, the World Health Organization declared an outbreak of a highly contagious form of an upper respiratory infection caused by COVID-19, a novel coronavirus strain commonly referred to as “coronavirus”. Mobile Mini has been deemed an essential infrastructure business, which means we continue to supply our products and services in most of the areas in which we operate; however, federal and local guidelines and restrictions have significantly curtailed the level of economic activity in affected areas, which include the areas in which we conduct our business. See additional information regarding COVID-19 in “Item 1A. Risk Factors”.
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.
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 include restricted common stock and incremental shares of common stock issuable upon the exercise of stock options.
Segment Reporting, Policy	Our operations are comprised of three reportable segments: North America Storage Solutions, U.K. Storage Solutions 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., the U.K. and Canada. All of our locations operate in their local currency. 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 $128.0 million for both the three months ended March 31, 2020 and 2019.
Impact of Recently Issued Accounting Standards	Impact of Recently Issued Accounting Standards Intangibles – Goodwill and Other – Internal-Use Software . In August 2018, the Financial Accounting Standards Board (the “FASB”) issued a standard that provides guidance on accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software, and hosting arrangements that include an internal-use software license. This guidance also requires entities to present the expense related to the capitalized implementation costs in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement and classify payments for capitalized implementation costs in the statement of cash flows in the same manner as payments made for fees associated with the hosting element. The entity is also required to present the capitalized implementation costs in the statement of financial position in the same line item that a prepayment for the fees of the associated hosting arrangement would be presented. This standard is effective for annual and interim periods beginning after December 15, 2019. We adopted this standard on January 1, 2020. The adoption did not have a material effect on our consolidated financial statements. 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 is 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. We adopted this standard on January 1, 2020. The adoption did not have a material effect on our consolidated financial statements. Financial Instruments – Credit Losses. In June 2016, the FASB issued guidance amending the previous guidance on impairment of financial instruments. Among other things, the new guidance requires expectations of future credit losses to be based on relevant information from past events, including historical experience, current conditions and reasonable and supportable forecasts that affect collectability. This guidance does not apply to receivables arising from direct rental revenue related to our operating leases. The guidance will be effective for fiscal years and interim periods beginning after December 15, 2019. We adopted this standard utilizing a modified-retrospective approach on January 1, 2020. The adoption did not have a material effect on our consolidated financial statements.
Rental Fleet, Policy	Rental fleet is capitalized at cost and depreciated over the estimated useful life of the unit using the straight-line method. Rental fleet is depreciated whether or not it is out on rent. Capitalized cost of rental fleet includes the price paid to acquire the unit and freight charges to the location when the unit is first placed in service, and when applicable, the cost of manufacturing or remanufacturing, which includes the cost of customizing units. Ordinary repair and maintenance costs are charged to operations as incurred.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Gross Carrying and Fair Value of Senior Notes	The Senior Notes are presented on the balance sheet net of deferred financing costs. The gross carrying value and the fair value of our Senior Notes are as follows: March 31, 2020 December 31, 2019 (In thousands) Carrying value $ 250,000 $ 250,000 Fair value 240,000 260,938

Revenues (Tables)

Revenues (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue From Contract With Customer [Abstract]
Schedule of Disaggregated Rental Revenue	In the following table, rental revenue is disaggregated by the nature of the underlying service provided and for the periods indicated. The table also includes a reconciliation of the disaggregated rental revenue to our reportable segments. For the Three Months Ended March 31, 2020 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Direct rental revenue $ 71,388 $ 12,819 $ 84,207 $ 17,638 $ 101,845 Delivery, pickup and similar revenue 21,824 4,381 26,205 7,721 33,926 Ancillary rental revenue 3,257 1,075 4,332 553 4,885 Total rental revenues $ 96,469 $ 18,275 $ 114,744 $ 25,912 $ 140,656 For the Three Months Ended March 31, 2019 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Direct rental revenue $ 68,475 $ 13,281 $ 81,756 $ 20,109 $ 101,865 Delivery, pickup and similar revenue 21,789 4,676 26,465 8,594 35,059 Ancillary rental revenue 3,252 1,252 4,504 744 5,248 Total rental revenues $ 93,516 $ 19,209 $ 112,725 $ 29,447 $ 142,172

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
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: Three Months Ended March 31, 2020 2019 (In thousands, except per share data) Numerator: Net income $ 8,301 $ 18,085 Denominator: Weighted average shares outstanding - basic 43,873 44,448 Dilutive effect of share-based awards 513 429 Weighted average shares outstanding - diluted 44,386 44,877 Earnings per share: Basic $ 0.19 $ 0.41 Diluted 0.19 0.40
Effect of Stock Options and Restricted 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 effect of stock options and restricted share awards that were issued or outstanding but excluded in calculating diluted EPS because their effect would have been anti-dilutive for the period indicated, or the underlying performance criteria had not yet been met: Three Months Ended March 31, 2020 2019 (In thousands) Stock options 811 1,504 Restricted share awards 106 75 Total 917 1,579

Acquisition (Tables)

Acquisition (Tables)	3 Months Ended
	Mar. 31, 2020
Business Combinations [Abstract]
Schedule of Components of Purchase Price and Net Assets Acquired	The components of the purchase price and net assets acquired during the three months ended March 31, 2020 are as follows (in thousands): Net Assets Acquired Rental fleet $ 3,265 Intangible assets: Customer relationships 950 Non-compete agreements 50 Goodwill 570 Other assets 66 Liabilities (93 ) Total purchase price $ 4,808

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Inventories	Inventories at March 31, 2020 and December 31, 2019 consisted of the following: March 31, 2020 December 31, 2019 (In thousands) Raw materials and supplies $ 7,549 $ 6,957 Finished units 1,991 2,560 Inventories $ 9,540 $ 9,517

Rental Fleet (Tables)

Rental Fleet (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Rental Fleet	Rental fleet consisted of the following at March 31, 2020 and December 31, 2019: Residual as Percentage of Original Cost (1) Estimated Useful Life in Years March 31, 2020 December 31, 2019 (In thousands) Storage Solutions: Steel storage containers 55% 30 $ 624,731 $ 627,230 Steel ground level offices 55 30 364,429 366,630 Other 6,122 6,565 Total 995,282 1,000,425 Accumulated depreciation (168,564 ) (166,565 ) Total Storage Solutions fleet, net $ 826,718 $ 833,860 Tank & Pump Solutions: Steel tanks 25 $ 82,264 $ 82,015 Roll-off boxes 15 - 20 35,576 35,398 Stainless steel tank trailers 25 31,292 29,716 Vacuum boxes 20 17,242 16,775 Dewatering boxes 20 10,233 9,486 Pumps and filtration equipment 7 15,031 14,343 Other 9,896 9,776 Total 201,534 197,509 Accumulated depreciation (68,075 ) (65,146 ) Total Tank & Pump Solutions fleet, net $ 133,459 $ 132,363 Total rental fleet, net $ 960,177 $ 966,223 (1) Tank & Pump Solutions fleet has been assigned zero residual value.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2020
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment at March 31, 2020 and December 31, 2019 consisted of the following: Residual Value as Percentage of Original Cost Estimated Useful Life in Years March 31, 2020 December 31, 2019 (In thousands) Land $ 1,626 $ 1,653 Vehicles and machinery 0 - 55% 5 - 30 176,148 174,191 Buildings and improvements (1) 0 - 25 3 - 30 32,721 33,137 Computer equipment and software 0 3 - 10 78,675 76,587 Furniture and office equipment 0 3 - 10 4,975 5,354 Property, plant and equipment 294,145 290,922 Accumulated depreciation (140,321 ) (133,739 ) Property, plant and equipment, net $ 153,824 $ 157,183 (1) Improvements made to leased properties are depreciated over the lesser of the estimated remaining life or the remaining term of the respective lease.

Goodwill and Intangibles (Table

Goodwill and Intangibles (Tables)	3 Months Ended
	Mar. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Activity and Balances Relating to Goodwill	The following table shows the activity and balances related to goodwill from January 1, 2020 to March 31, 2020 (in thousands): Balance at January 1, 2020 $ 713,404 Acquisition 570 Foreign currency (3,921 ) Balance at March 31, 2020 $ 710,053
Balances Related to Intangible Assets	The following table reflects balances related to intangible assets for the periods presented: March 31, 2020 December 31, 2019 Estimated Useful Life in Years Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) Customer relationships 15 - 20 $ 95,287 $ (45,833 ) $ 49,454 $ 94,808 $ (44,846 ) $ 49,962 Trade names/trademarks 5 - 7 5,200 (4,246 ) 954 5,200 (4,164 ) 1,036 Non-compete agreements 5 300 (103 ) 197 1,810 (1,648 ) 162 Other 20 59 (35 ) 24 60 (35 ) 25 Total $ 100,846 $ (50,217 ) $ 50,629 $ 101,878 $ (50,693 ) $ 51,185
Schedule of Expected Future Amortization of Intangible Assets	Based on the carrying value at March 31, 2020, future amortization of intangible assets is expected to be as follows for the years ended December 31 (in thousands): 2020 (remaining) $ 4,660 2021 5,626 2022 5,163 2023 4,491 2024 4,105 Thereafter 26,584 Total $ 50,629

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Scheduled Maturity for Debt Obligations	The scheduled maturity for debt obligations for balances outstanding at March 31, 2020 are as follows: Lines of Credit Senior Notes Finance Lease Obligations Total (In thousands) 2020 (remaining) $ — $ — $ 11,283 $ 11,283 2021 — — 14,263 14,263 2022 — — 13,250 13,250 2023 — — 11,854 11,854 2024 557,500 250,000 8,270 815,770 Thereafter — — 16,613 16,613 Total $ 557,500 $ 250,000 $ 75,533 $ 883,033

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Summary of Reconciliation of Unrecognized Tax Benefits	A reconciliation of the beginning and ending balance of unrecognized tax benefits is as follows: 2020 (In thousands) Beginning balance $ 515 Additions based on tax positions related to prior years — Ending balance $ 515

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Option Activity	The following table summarizes stock option activity for the three months ended March 31, 2020: Total Options Weighted Average Exercise Price (In thousands) Options outstanding, beginning of period 3,010 $ 32.53 Additional options awarded based upon achievement of specified performance criteria 106 32.43 Canceled/Expired (6 ) 42.87 Exercised (24 ) 30.92 Options outstanding, end of period 3,086 32.52
Fully Vested Stock Options and Stock Options Expected to Vest	A summary of stock options outstanding as of March 31, 2020 is as follows: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Terms Aggregate Intrinsic Value (I n (In years) (In thousands) Outstanding and Exercisable 3,086 $ 32.52 4.08 $ 163,417
Restricted Stock Award Activity	A summary of restricted stock award activity for the three months ended March 31, 2020 is as follows: Number of Shares Performance- Based Awards Service-Based Awards Total Awards Weighted Average Grant Date Fair Value (In thousands) Restricted stock awards at beginning of period 172 259 431 $ 36.06 Awarded 91 91 182 39.28 Additional shares awarded based upon achievement of specified performance criteria 52 — 52 40.53 Released (119 ) (98 ) (217 ) 36.00 Forfeited (4 ) (5 ) (9 ) 37.50 Restricted stock awards at end of period 192 247 439 37.77 Unvested target stock awards that vest based upon 2020 performance conditions 96 Unvested target stock awards that vest based upon 2021 performance conditions 67 Unvested target stock awards that vest based upon 2022 performance conditions 29

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Schedule of Dividends Authorized and Declared Cash Dividends to Common Stockholders	The Board authorized and declared cash dividends to all of our common stockholders as follows: Declaration Date Payment Date Record Date (close of business) Dividend Amount Per Share of Common Stock January 27, 2020 March 11, 2020 February 26, 2020 $ 0.303

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Segment Reporting	The following tables set forth certain information regarding each of the Company’s segments for the three-month periods indicated: For the Three Months Ended March 31, 2020 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 96,469 $ 18,275 $ 114,744 $ 25,912 $ 140,656 Sales 5,284 1,922 7,206 1,110 8,316 Other 39 — 39 29 68 Total revenues 101,792 20,197 121,989 27,051 149,040 Costs and expenses: Rental, selling and general expenses 71,288 12,395 83,683 18,575 102,258 Cost of sales 3,061 1,477 4,538 564 5,102 Depreciation and amortization 9,305 1,770 11,075 6,417 17,492 Total costs and expenses 83,654 15,642 99,296 25,556 124,852 Income from operations $ 18,138 $ 4,555 $ 22,693 $ 1,495 $ 24,188 Interest expense, net of interest income $ 6,462 $ 107 $ 6,569 $ 2,676 $ 9,245 Income tax provision (benefit) 6,251 775 7,026 (387 ) 6,639 Capital expenditures for additions to rental fleet, excluding acquisitions 5,200 337 5,537 4,514 10,051 For the Three Months Ended March 31, 2019 Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) Revenues: Rental $ 93,516 $ 19,209 $ 112,725 $ 29,447 $ 142,172 Sales 4,026 1,751 5,777 1,446 7,223 Other 225 — 225 41 266 Total revenues 97,767 20,960 118,727 30,934 149,661 Costs and expenses: Rental, selling and general expenses 58,956 13,670 72,626 19,608 92,234 Cost of sales 2,413 1,403 3,816 786 4,602 Depreciation and amortization 8,989 1,734 10,723 6,612 17,335 Total costs and expenses 70,358 16,807 87,165 27,006 114,171 Income from operations $ 27,409 $ 4,153 $ 31,562 $ 3,928 $ 35,490 Interest expense, net of interest income $ 7,930 $ 135 $ 8,065 $ 2,695 $ 10,760 Income tax provision 5,395 764 6,159 364 6,523 Capital expenditures for additions to rental fleet, excluding acquisitions 11,841 921 12,762 10,254 23,016
Assets Segments	Assets related to the Company’s reportable segments include the following: Storage Solutions North America United Kingdom Total Tank & Pump Solutions Consolidated (In thousands) As of March 31, 2020: Goodwill $ 474,809 $ 54,028 $ 528,837 $ 181,216 $ 710,053 Intangibles, net 3,234 219 3,453 47,176 50,629 Rental fleet, net 691,995 134,723 826,718 133,459 960,177 As of December 31, 2019: Goodwill $ 474,622 $ 57,566 $ 532,188 $ 181,216 $ 713,404 Intangibles, net 2,518 256 2,774 48,411 51,185 Rental fleet, net 689,424 144,436 833,860 132,363 966,223

Condensed Consolidating Finan_2

Condensed Consolidating Financial Information (Tables)	3 Months Ended
	Mar. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Condensed Consolidating Balance Sheets	The following tables reflect the condensed consolidating financial information of the Company’s subsidiary guarantors of the Senior Notes and its non-guarantor subsidiaries. Separate financial statements of the subsidiary guarantors are not presented because the guarantee by each 100% owned subsidiary guarantor is full and unconditional, joint and several, subject to customary exceptions, and management has determined that such information is not material to investors. MOBILE MINI, INC. CONDENSED CONSOLIDATING BALANCE SHEETS As of March 31, 2020 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated ASSETS Cash and cash equivalents $ 1,001 $ 9,794 $ — $ 10,795 Receivables, net 85,223 14,036 — 99,259 Inventories 7,868 1,672 — 9,540 Rental fleet, net 818,468 141,709 — 960,177 Property, plant and equipment, net 129,846 23,978 — 153,824 Operating lease assets 70,553 20,968 — 91,521 Other assets 13,419 1,034 — 14,453 Intangibles, net 50,403 226 — 50,629 Goodwill 651,707 58,346 — 710,053 Intercompany receivables 145,874 32,160 (178,034 ) — Total assets $ 1,974,362 $ 303,923 $ (178,034 ) $ 2,100,251 LIABILITIES AND STOCKHOLDERS' Liabilities: Accounts payable $ 35,265 $ 5,034 $ — $ 40,299 Accrued liabilities 55,897 7,508 — 63,405 Operating lease liabilities 73,108 20,329 — 93,437 Lines of credit 557,500 — — 557,500 Obligations under finance leases 75,465 68 — 75,533 Senior notes, net 247,287 — — 247,287 Deferred income taxes 179,796 18,624 — 198,420 Intercompany payables 29,824 211 (30,035 ) — Total liabilities 1,254,142 51,774 (30,035 ) 1,275,881 Commitments and contingencies Stockholders' equity: Common stock 506 — — 506 Additional paid-in capital 641,515 147,999 (147,999 ) 641,515 Retained earnings 256,516 183,628 — 440,144 Accumulated other comprehensive loss — (79,478 ) — (79,478 ) Treasury stock, at cost (178,317 ) — — (178,317 ) Total stockholders' equity 720,220 252,149 (147,999 ) 824,370 Total liabilities and stockholders' equity $ 1,974,362 $ 303,923 $ (178,034 ) $ 2,100,251 MOBILE MINI, INC. CONDENSED CONSOLIDATING BALANCE SHEETS As of December 31, 2019 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated ASSETS Cash and cash equivalents $ 559 $ 7,494 $ — $ 8,053 Receivables, net 90,153 14,237 — 104,390 Inventories 7,210 2,307 — 9,517 Rental fleet, net 814,129 152,094 — 966,223 Property, plant and equipment, net 132,532 24,651 — 157,183 Operating lease assets 69,911 23,205 — 93,116 Other assets 12,531 1,275 — 13,806 Intangibles, net 50,920 265 — 51,185 Goodwill 651,137 62,267 — 713,404 Intercompany receivables 146,008 31,829 (177,837 ) — Total assets $ 1,975,090 $ 319,624 $ (177,837 ) $ 2,116,877 LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities: Accounts payable $ 25,156 $ 6,398 $ — $ 31,554 Accrued liabilities 68,916 8,153 — 77,069 Operating lease liabilities 72,453 22,479 94,932 Lines of credit 555,400 — — 555,400 Obligations under finance leases 74,319 80 — 74,399 Senior notes, net 247,127 — — 247,127 Deferred income taxes 175,291 19,743 — 195,034 Intercompany payables 29,782 56 (29,838 ) — Total liabilities 1,248,444 56,909 (29,838 ) 1,275,515 Commitments and contingencies Stockholders' equity: Common stock 504 — — 504 Additional paid-in capital 638,083 147,999 (147,999 ) 638,083 Retained earnings 265,476 179,809 — 445,285 Accumulated other comprehensive loss — (65,093 ) — (65,093 ) Treasury stock, at cost (177,417 ) — — (177,417 ) Total stockholders' equity 726,646 262,715 (147,999 ) 841,362 Total liabilities and stockholders' equity $ 1,975,090 $ 319,624 $ (177,837 ) $ 2,116,877
Condensed Consolidating Statements of Income	MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF INCOME Three months ended March 31, 2020 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 121,576 $ 19,080 $ — $ 140,656 Sales 6,353 1,963 — 8,316 Other 68 — — 68 Total revenues 127,997 21,043 — 149,040 Costs and expenses: Rental, selling and general expenses 89,234 13,024 — 102,258 Cost of sales 3,600 1,502 — 5,102 Depreciation and amortization 15,650 1,842 — 17,492 Total costs and expenses 108,484 16,368 — 124,852 Income from operations 19,513 4,675 — 24,188 Other income (expense): Interest income 6 6 — 12 Interest expense (9,143 ) (114 ) — (9,257 ) Foreign currency exchange 2 (5 ) — (3 ) Income before income tax provision 10,378 4,562 — 14,940 Income tax provision 5,895 744 — 6,639 Net income $ 4,483 $ 3,818 $ — $ 8,301 MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF INCOME Three months ended March 31, 2019 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Revenues: Rental $ 122,269 $ 19,903 $ — $ 142,172 Sales 5,457 1,766 — 7,223 Other 266 — — 266 Total revenues 127,992 21,669 — 149,661 Costs and expenses: Rental, selling and general expenses 77,962 14,272 — 92,234 Cost of sales 3,188 1,414 — 4,602 Depreciation and amortization 15,518 1,817 — 17,335 Total costs and expenses 96,668 17,503 — 114,171 Income from operations 31,324 4,166 — 35,490 Other income (expense): Interest expense (10,626 ) (134 ) — (10,760 ) Deferred financing costs write-off (123 ) — — (123 ) Foreign currency exchange — 1 — 1 Income before income tax provision 20,575 4,033 — 24,608 Income tax provision 5,751 772 — 6,523 Net income $ 14,824 $ 3,261 $ — $ 18,085
Condensed Consolidating Statements of Comprehensive Income (Loss)	MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Three months ended March 31, 2020 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net income $ 4,483 $ 3,818 $ — $ 8,301 Foreign currency translation adjustment — (14,385 ) — (14,385 ) Comprehensive income (loss) $ 4,483 $ (10,567 ) $ — $ (6,084 ) MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME Three months ended March 31, 2019 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Net income $ 14,824 $ 3,261 $ — $ 18,085 Foreign currency translation adjustment — 5,105 — 5,105 Comprehensive income $ 14,824 $ 8,366 $ — $ 23,190
Condensed Consolidating Statements of Cash Flows	MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Three months ended March 31, 2020 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash flows from operating activities: Net income $ 4,483 $ 3,818 $ — $ 8,301 Adjustments to reconcile net income to net cash provided by operating activities: Provision for doubtful accounts 872 83 — 955 Amortization of deferred financing costs 455 — — 455 Share-based compensation expense 2,614 68 — 2,682 Depreciation and amortization 15,650 1,842 — 17,492 Gain on sale of rental fleet units (1,304 ) (140 ) — (1,444 ) Loss on disposal of property, plant and equipment 26 — — 26 Deferred income taxes 4,272 114 — 4,386 Foreign currency exchange (2 ) 5 — 3 Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables 4,125 (760 ) — 3,365 Inventories (658 ) 504 — (154 ) Other assets 1,197 184 — 1,381 Accounts payable 10,644 (1,154 ) — 9,490 Accrued liabilities (13,634 ) (81 ) — (13,715 ) Intercompany 464 (464 ) — — Net cash provided by operating activities 29,204 4,019 — 33,223 Cash flows from investing activities: Cash paid for business acquired, net of cash acquired (4,808 ) — — (4,808 ) Additions to rental fleet, excluding acquisitions (9,673 ) (378 ) — (10,051 ) Proceeds from sale of rental fleet 2,889 585 — 3,474 Additions to property, plant and equipment, excluding acquisitions (2,367 ) (1,807 ) — (4,174 ) Proceeds from sale of property, plant and equipment 15 — — 15 Net cash used in investing activities (13,944 ) (1,600 ) — (15,544 ) Cash flows from financing activities: Net borrowings under lines of credit 2,100 — — 2,100 Principal payments on finance lease obligations (3,196 ) (8 ) — (3,204 ) Issuance of common stock 753 — — 753 Dividend payments (13,575 ) — — (13,575 ) Purchase of treasury stock (900 ) — — (900 ) Net cash used in financing activities (14,818 ) (8 ) — (14,826 ) Effect of exchange rate changes on cash — (111 ) — (111 ) Net increase in cash 442 2,300 — 2,742 Cash and cash equivalents at beginning of period 559 7,494 — 8,053 Cash and cash equivalents at end of period $ 1,001 $ 9,794 $ — $ 10,795 MOBILE MINI, INC. CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Three months ended March 31, 2019 (In thousands) Guarantors Non- Guarantors Eliminations Consolidated Cash flows from operating activities: Net income $ 14,824 $ 3,261 $ — $ 18,085 Adjustments to reconcile net income to net cash provided by operating activities: Deferred financing costs write-off 123 — — 123 Provision for doubtful accounts 1,105 107 — 1,212 Amortization of deferred financing costs 505 — — 505 Amortization of long-term liabilities 13 — — 13 Share-based compensation expense 3,208 196 — 3,404 Depreciation and amortization 15,518 1,817 — 17,335 Gain on sale of rental fleet units (1,273 ) (152 ) — (1,425 ) Loss on disposal of property, plant and equipment 21 (3 ) — 18 Deferred income taxes 4,931 127 — 5,058 Foreign currency exchange — (1 ) — (1 ) Changes in certain assets and liabilities, net of effect of businesses acquired: Receivables 15,776 404 — 16,180 Inventories 342 (266 ) — 76 Other assets (1,580 ) 186 — (1,394 ) Accounts payable (1,282 ) (459 ) — (1,741 ) Accrued liabilities (18,735 ) 70 — (18,665 ) Intercompany (92 ) 92 — — Net cash provided by operating activities 33,404 5,379 — 38,783 Cash flows from investing activities: Additions to rental fleet, excluding acquisitions (22,098 ) (918 ) — (23,016 ) Proceeds from sale of rental fleet 2,698 640 — 3,338 Additions to property, plant and equipment, excluding acquisitions (1,863 ) (1,056 ) — (2,919 ) Proceeds from sale of property, plant and equipment 28 21 — 49 Net cash used in investing activities (21,235 ) (1,313 ) — (22,548 ) Cash flows from financing activities: Net borrowings (repayments) under lines of credit 4,388 (4,185 ) — 203 Deferred financing costs (3,254 ) — — (3,254 ) Principal payments on finance lease obligations (2,583 ) (3 ) — (2,586 ) Issuance of common stock 1,690 — — 1,690 Dividend payments (12,426 ) — — (12,426 ) Purchase of treasury stock (1,057 ) — — (1,057 ) Net cash used in financing activities (13,242 ) (4,188 ) — (17,430 ) Effect of exchange rate changes on cash — (114 ) — (114 ) Net decrease in cash (1,073 ) (236 ) — (1,309 ) Cash and cash equivalents at beginning of period 1,483 4,122 — 5,605 Cash and cash equivalents at end of period $ 410 $ 3,886 $ — $ 4,296

Mobile Mini, Inc. - Organizat_3

Mobile Mini, Inc. - Organization and Description of Business - Additional Information (Detail) - USD ($) $ in Millions	Mar. 01, 2020	Mar. 31, 2020
Organization and Description of Business [Line Items]
Percentage of ownership owned		100.00%
Merger Agreement | WillScot | Rental Selling and General Expenses
Organization and Description of Business [Line Items]
Merger-related expenses		$ 15.5
Merger Agreement | WillScot | Class A Common Stock
Organization and Description of Business [Line Items]
Conversion of stock, right to receive for each outstanding share	2,405

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes fair value basis for measurement, description	The fair value of our $250.0 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 the Senior Notes.
Senior Notes 5.875 Percent Due 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes, face amount	$ 250,000,000
Debt instrument interest rate	5.875%
Senior notes due, date	Jul. 1, 2024

Gross Carrying and Fair Value o

Gross Carrying and Fair Value of Senior Notes (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Carrying value	$ 247,287	$ 247,127
Senior Notes 5.875 Percent Due 2024
Debt Instrument [Line Items]
Carrying value	250,000	250,000
Fair value	$ 240,000	$ 260,938

Revenues - Additional Informati

Revenues - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Accrued Liabilities
Revenue From Contracts With Customers [Line Items]
Unearned rental revenue	$ 38.6	$ 41.2

Revenues - Additional Informa_2

Revenues - Additional Information (Detail 1)	Mar. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-04-01
Revenue From Contracts With Customers [Line Items]
Expected remaining performance obligation recognition period	12 months

Revenues - Schedule of Disaggre

Revenues - Schedule of Disaggregated Rental Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation Of Revenue [Line Items]
Revenues	$ 149,040	$ 149,661
Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	121,989	118,727
Tank & Pump Solutions Segment
Disaggregation Of Revenue [Line Items]
Revenues	27,051	30,934
North America | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	101,792	97,767
United Kingdom | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	20,197	20,960
Rental
Disaggregation Of Revenue [Line Items]
Revenues	140,656	142,172
Rental | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	114,744	112,725
Rental | Tank & Pump Solutions Segment
Disaggregation Of Revenue [Line Items]
Revenues	25,912	29,447
Rental | Direct rental revenue
Disaggregation Of Revenue [Line Items]
Revenues	101,845	101,865
Rental | Direct rental revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	84,207	81,756
Rental | Direct rental revenue | Tank & Pump Solutions Segment
Disaggregation Of Revenue [Line Items]
Revenues	17,638	20,109
Rental | Delivery, pickup and similar revenue
Disaggregation Of Revenue [Line Items]
Revenues	33,926	35,059
Rental | Delivery, pickup and similar revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	26,205	26,465
Rental | Delivery, pickup and similar revenue | Tank & Pump Solutions Segment
Disaggregation Of Revenue [Line Items]
Revenues	7,721	8,594
Rental | Ancillary rental revenue
Disaggregation Of Revenue [Line Items]
Revenues	4,885	5,248
Rental | Ancillary rental revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	4,332	4,504
Rental | Ancillary rental revenue | Tank & Pump Solutions Segment
Disaggregation Of Revenue [Line Items]
Revenues	553	744
Rental | North America | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	96,469	93,516
Rental | North America | Direct rental revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	71,388	68,475
Rental | North America | Delivery, pickup and similar revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	21,824	21,789
Rental | North America | Ancillary rental revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	3,257	3,252
Rental | United Kingdom | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	18,275	19,209
Rental | United Kingdom | Direct rental revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	12,819	13,281
Rental | United Kingdom | Delivery, pickup and similar revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	4,381	4,676
Rental | United Kingdom | Ancillary rental revenue | Storage Solutions
Disaggregation Of Revenue [Line Items]
Revenues	$ 1,075	$ 1,252

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
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net income	$ 8,301	$ 18,085
Denominator:
Weighted average shares outstanding - basic	43,873	44,448
Dilutive effect of share-based awards	513	429
Weighted average shares outstanding - diluted	44,386	44,877
Earnings per share:
Basic	$ 0.19	$ 0.41
Diluted	$ 0.19	$ 0.40

Effect of Stock Options and Res

Effect of Stock Options and Restricted Share Awards that were Issued or Outstanding but were Excluded in Calculating Diluted Earnings Per Share Because their Effect would have been Anti-Dilutive (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of dilutive EPS	917	1,579
Stock options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of dilutive EPS	811	1,504
Restricted share awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of dilutive EPS	106	75

Acquisition - Additional Inform

Acquisition - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020Entity
Portable Storage Businesses
Business Acquisition [Line Items]
Number of business acquired	1

Schedule of Components of Purch

Schedule of Components of Purchase Price and Net Assets Acquired (Detail) $ in Thousands	Mar. 31, 2020USD ($)
Net Assets Acquired
Rental fleet	$ 3,265
Intangible assets:
Goodwill	570
Other assets	66
Liabilities	(93)
Total purchase price	4,808
Customer relationships
Intangible assets:
Intangible assets	950
Non-compete agreements
Intangible assets:
Intangible assets	$ 50

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 7,549	$ 6,957
Finished units	1,991	2,560
Inventories	$ 9,540	$ 9,517

Rental Fleet - Additional Infor

Rental Fleet - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, net	$ 960,177		$ 966,223
Portable Storage
Property Subject to or Available for Operating Lease [Line Items]
Net orderly liquidation appraisal value of rental fleet	1,000,000
Depreciation expense	$ 7,800	$ 7,700

Rental Fleet (Detail)

Rental Fleet (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Dec. 31, 2019
Property Subject to or Available for Operating Lease [Line Items]
Total fleet, net		$ 960,177	$ 966,223
Storage Solutions
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		995,282	1,000,425
Accumulated depreciation		(168,564)	(166,565)
Total fleet, net		$ 826,718	833,860
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%
Estimated Useful Life in Years		30 years
Rental fleet, gross		$ 624,731	627,230
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%
Estimated Useful Life in Years		30 years
Rental fleet, gross		$ 364,429	366,630
Storage Solutions | Other
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		6,122	6,565
Tank & Pump Solutions
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		201,534	197,509
Accumulated depreciation		(68,075)	(65,146)
Total fleet, net		$ 133,459	132,363
Tank & Pump Solutions | Steel tanks
Property Subject to or Available for Operating Lease [Line Items]
Estimated Useful Life in Years		25 years
Rental fleet, gross		$ 82,264	82,015
Tank & Pump Solutions | Roll-off boxes
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		$ 35,576	35,398
Tank & Pump Solutions | Roll-off boxes | Minimum
Property Subject to or Available for Operating Lease [Line Items]
Estimated Useful Life in Years		15 years
Tank & Pump Solutions | Roll-off boxes | Maximum
Property Subject to or Available for Operating Lease [Line Items]
Estimated Useful Life in Years		20 years
Tank & Pump Solutions | Stainless steel tank trailers
Property Subject to or Available for Operating Lease [Line Items]
Estimated Useful Life in Years		25 years
Rental fleet, gross		$ 31,292	29,716
Tank & Pump Solutions | Vacuum Boxes
Property Subject to or Available for Operating Lease [Line Items]
Estimated Useful Life in Years		20 years
Rental fleet, gross		$ 17,242	16,775
Tank & Pump Solutions | Dewatering boxes
Property Subject to or Available for Operating Lease [Line Items]
Estimated Useful Life in Years		20 years
Rental fleet, gross		$ 10,233	9,486
Tank & Pump Solutions | Pumps and filtration equipment
Property Subject to or Available for Operating Lease [Line Items]
Estimated Useful Life in Years		7 years
Rental fleet, gross		$ 15,031	14,343
Tank & Pump Solutions | Other
Property Subject to or Available for Operating Lease [Line Items]
Rental fleet, gross		$ 9,896	$ 9,776
[1]	Tank & Pump Solutions fleet has been assigned zero residual value.

Rental Fleet (Parenthetical) (D

Rental Fleet (Parenthetical) (Detail)	Mar. 31, 2020USD ($)
Tank & Pump Solutions
Property Subject to or Available for Operating Lease [Line Items]
Residual value	$ 0

Property, Plant and Equipment -

Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Property Plant And Equipment [Abstract]
Depreciation expense	$ 8.2	$ 8

Property, Plant and Equipment_2

Property, Plant and Equipment (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Land		$ 1,626	$ 1,653
Vehicles and machinery		176,148	174,191
Buildings and improvements	[1]	32,721	33,137
Computer equipment and software		78,675	76,587
Furniture and office equipment		4,975	5,354
Property, plant and equipment		294,145	290,922
Accumulated depreciation		(140,321)	(133,739)
Property, plant and equipment, net		$ 153,824	$ 157,183
Vehicles and machinery | Minimum
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost		0.00%
Estimated Useful Life in Years		5 years
Vehicles and machinery | Maximum
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost		55.00%
Estimated Useful Life in Years		30 years
Buildings and improvements | Minimum
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost	[1]	0.00%
Estimated 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%
Estimated Useful Life in Years	[1]	30 years
Computer equipment and software
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost		0.00%
Computer equipment and software | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Life in Years		3 years
Computer equipment and software | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Life in Years		10 years
Furniture and office equipment
Property Plant And Equipment [Line Items]
Residual Value as Percentage of Original Cost		0.00%
Furniture and office equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Life in Years		3 years
Furniture and office equipment | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Life in Years		10 years
[1]	Improvements made to leased properties are depreciated over the lesser of the estimated remaining life or the remaining term of the respective lease.

Goodwill and Intangibles - Addi

Goodwill and Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 710,053		$ 713,404
Amortization of all other intangibles	1,500	$ 1,600
Storage Solutions
Goodwill [Line Items]
Goodwill	528,837		532,188
Storage Solutions | North America
Goodwill [Line Items]
Goodwill	474,809		474,622
Storage Solutions | United Kingdom
Goodwill [Line Items]
Goodwill	54,028		57,566
Tank & Pump Solutions Segment
Goodwill [Line Items]
Goodwill	$ 181,216		$ 181,216

Activity and Balances Relating

Activity and Balances Relating to Goodwill (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Balance at January 1, 2020	$ 713,404
Acquisition	570
Foreign currency	(3,921)
Balance at March 31, 2020	$ 710,053

Balances Related to Intangible

Balances Related to Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 100,846	$ 101,878
Accumulated Amortization	(50,217)	(50,693)
Net Carrying Amount	50,629	51,185
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	95,287	94,808
Accumulated Amortization	(45,833)	(44,846)
Net Carrying Amount	$ 49,454	49,962
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life in Years	15 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life in Years	20 years
Trade names/trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 5,200	5,200
Accumulated Amortization	(4,246)	(4,164)
Net Carrying Amount	$ 954	1,036
Trade names/trademarks | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life in Years	5 years
Trade names/trademarks | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life in Years	7 years
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life in Years	5 years
Gross Carrying Amount	$ 300	1,810
Accumulated Amortization	(103)	(1,648)
Net Carrying Amount	$ 197	162
Other
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life in Years	20 years
Gross Carrying Amount	$ 59	60
Accumulated Amortization	(35)	(35)
Net Carrying Amount	$ 24	$ 25

Schedule of Expected Future Amo

Schedule of Expected Future Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Finite Lived Intangible Assets Future Amortization Expense [Abstract]
2020 (remaining)	$ 4,660
2021	5,626
2022	5,163
2023	4,491
2024	4,105
Thereafter	26,584
Net Carrying Amount	$ 50,629	$ 51,185

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)	Mar. 22, 2019	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Obligations under finance leases		$ 75,533,000	$ 74,399,000
LIBOR Loans
Debt Instrument [Line Items]
Revolving credit facility, margin rate		1.50%
Base Rate Loans
Debt Instrument [Line Items]
Revolving credit facility, margin rate		0.50%
Senior Notes 5.875 Percent Due 2024
Debt Instrument [Line Items]
Senior notes, face amount		$ 250,000,000
Senior notes, interest rate		5.875%
Senior notes, maturity date		Jul. 1, 2024
Senior notes, interest payment term		Interest on the 2024 Notes is payable semiannually in arrears on January 1 and July 1.
Second Amended and Restated $1 billion ABL Credit Agreement
Debt Instrument [Line Items]
Credit Agreement, initiation date	Mar. 22, 2019
Unused line fee percentage in respect of unutilized commitments		0.225%
Credit Agreement, interest rate terms		Loans made under the (i) U.S. Subfacility bear interest at a rate equal to, at Mobile Mini’s option, either (a) the London interbank offered rate (“LIBOR”) plus an applicable margin (“LIBOR Loans”) or (b) the prime rate plus an applicable margin (“Base Rate Loans”);  (ii) U.K. Subfacility denominated in British Pounds bear interest at LIBOR plus an applicable margin and loans denominated in Euros bear interest at the Euro interbank offered rate plus an applicable margin; and (iii) Canadian Subfacility bear interest at a rate equal to, at Mobile Mini’s option, either (a) the Canadian prime rate plus an applicable margin  or (b) the Canadian Dollar bankers’ acceptance rate  plus an applicable margin.  As of March 31, 2020, the applicable margins are 1.50% for LIBOR Loans and 0.50% for Base Rate Loans.  Mobile Mini is also required to pay an unused line fee in respect of the unutilized commitments under the Credit Agreement at a fee rate of 0.225% per annum, as well as customary letter of credit fees
Minimum fixed charges coverage ratio		100.00%
Line of credit, specified excess borrowing availability for financial maintenance covenants to be applicable		$ 90,000,000
Applicable percentage of revolving loan commitment and aggregate borrowing base		10.00%
Line of credit, covenant		Credit Agreement are subject to customary conditions, including sufficient availability under the respective borrowing base.  The Credit Agreement also contains various financial and nonfinancial covenants which require Mobile Mini to, among other things, comply with a minimum fixed charge coverage ratio of 1.00 to 1.00 as of the last day of each quarter, upon specified excess availability 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.
Second Amended and Restated $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		Mar. 22, 2024
Second Amended and Restated $1 billion ABL Credit Agreement | First Lien Senior Secured Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Credit Agreement, increase in additional commitments	500,000,000
Second Amended and Restated $1 billion ABL Credit Agreement | U.S. Lenders | Standby Letters of Credit
Debt Instrument [Line Items]
Credit Agreement, borrowing capacity	50,000,000
Second Amended and Restated $1 billion ABL Credit Agreement | U.K. Based Lenders | Standby Letters of Credit
Debt Instrument [Line Items]
Credit Agreement, borrowing capacity	20,000,000
Second Amended and Restated $1 billion ABL Credit Agreement | Canadian Based Lenders | Standby Letters of Credit
Debt Instrument [Line Items]
Credit Agreement, borrowing capacity	$ 20,000,000

Scheduled Maturity for Debt Obl

Scheduled Maturity for Debt Obligations (Detail) $ in Thousands	Mar. 31, 2020USD ($)
Debt Instrument [Line Items]
2020 (remaining)	$ 11,283
2021	14,263
2022	13,250
2023	11,854
2024	815,770
Thereafter	16,613
Total	883,033
Lines of Credit
Debt Instrument [Line Items]
2024	557,500
Total	557,500
Senior Notes
Debt Instrument [Line Items]
2024	250,000
Total	250,000
Finance Lease Obligations
Debt Instrument [Line Items]
2020 (remaining)	11,283
2021	14,263
2022	13,250
2023	11,854
2024	8,270
Thereafter	16,613
Total	$ 75,533

Leases - Additional Information

Leases - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases, option to extend	Many real estate leases include one or more options to renew.

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Income Tax Contingency [Line Items]
Tax year subject to tax examination for U.S. Federal return	As of March 31, 2020, we are no longer subject to examination by U.S. federal tax authorities for years prior to 2016, to examination for any U.S. state taxing authority prior to 2014, or to examination for any foreign jurisdictions prior to 2015. All subsequent periods remain open to examination.
Effective income tax rate, percent	44.40%	26.50%
Unrecognized excess tax benefits	$ 515		$ 515
Minimum
Income Tax Contingency [Line Items]
Step two threshold to quantify uncertain tax position	50.00%

Summary of Reconciliation of Un

Summary of Reconciliation of Unrecognized Tax Benefits (Detail) $ in Thousands	Mar. 31, 2020USD ($)
Gross Position
Beginning balance	$ 515
Ending balance	$ 515

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share available for future grants | shares	800,000
Stock options contractual terms	10 years
Unvested stock options | shares	0
Stock option granted | shares	0
Aggregate intrinsic value of options exercised	$ 0.3
Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-awards vesting period	3 years
Percentage of number of options vested	0.00%
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 13.2
Weighted average recognition period (years)	1 year 9 months 18 days
Aggregated grant date fair value of restricted stock awards vested	$ 7.8
Aggregated vesting date fair value of restricted stock awards vested	$ 8.9
Restricted stock awards | Shares Granted in 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of number of options vested	163.00%
Restricted stock awards | Shares Granted in 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of number of options vested	200.00%
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of number of options vested	200.00%
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 number of options 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 number of options vested	200.00%

Stock Option Activity (Detail)

Stock Option Activity (Detail) shares in Thousands	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Total Options
Options outstanding, beginning of period | shares	3,010
Additional options awarded based upon achievement of specified performance criteria | shares	106
Canceled/Expired | shares	(6)
Exercised | shares	(24)
Options outstanding, end of period | shares	3,086
Weighted Average Exercise Price
Options outstanding, beginning of period | $ / shares	$ 32.53
Additional options awarded based upon achievement of specified performance criteria | $ / shares	32.43
Canceled/Expired | $ / shares	42.87
Exercised | $ / shares	30.92
Options outstanding, end of period | $ / shares	$ 32.52

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	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Number of Shares
Outstanding	3,086	3,010
Exercisable	3,086
Weighted Average Exercise Price
Outstanding	$ 32.52	$ 32.53
Exercisable	$ 32.52
Weighted Average Remaining Contractual Term (In years)
Outstanding	4 years 29 days
Exercisable	4 years 29 days
Aggregate Intrinsic Value
Outstanding	$ 163,417
Exercisable	$ 163,417

Restricted Stock Award Activity

Restricted Stock Award Activity (Detail) - Restricted stock awards shares in Thousands	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Number of Shares
Restricted stock awards at beginning of period	431
Awarded	182
Additional shares awarded based upon achievement of specified performance criteria	52
Released	(217)
Forfeited	(9)
Restricted stock awards at end of period	439
Weighted Average Grant Date Fair Value
Restricted stock awards at beginning of period | $ / shares	$ 36.06
Awarded | $ / shares	39.28
Additional shares awarded based upon achievement of specified performance criteria | $ / shares	40.53
Released | $ / shares	36
Forfeited | $ / shares	37.50
Restricted stock awards at end of period | $ / shares	$ 37.77
Performance-Based Awards
Number of Shares
Restricted stock awards at beginning of period	172
Awarded	91
Additional shares awarded based upon achievement of specified performance criteria	52
Released	(119)
Forfeited	(4)
Restricted stock awards at end of period	192
Performance-Based Awards | Vest Based Upon 2020 Performance Conditions
Number of Shares
Restricted target stock awards	96
Performance-Based Awards | Vest Based Upon 2021 Performance Conditions
Number of Shares
Restricted target stock awards	67
Performance-Based Awards | Vest Based Upon 2022 Performance Conditions
Number of Shares
Restricted target stock awards	29
Service-Based Awards
Number of Shares
Restricted stock awards at beginning of period	259
Awarded	91
Released	(98)
Forfeited	(5)
Restricted stock awards at end of period	247

Schedule of Dividends Authorize

Schedule of Dividends Authorized and Declared Cash Dividends to Common Stockholders (Detail) - Installment First Quarter Of Fiscal Year - $ / shares	3 Months Ended
	Mar. 31, 2020	Jan. 27, 2020
Dividends Payable [Line Items]
Declaration Date	Jan. 27, 2020
Payment Date	Mar. 11, 2020
Record Date (close of business)	Feb. 26, 2020
Dividend Amount Per Share of Common Stock		$ 0.303

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Apr. 17, 2015	Nov. 06, 2013
Equity, Class of Treasury Stock [Line Items]
Share repurchase program authorized amount			$ 175,000,000	$ 125,000,000
Share repurchase program additional authorized amount			$ 50,000,000
Treasury stock value	$ 900,000	$ 1,057,000
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Treasury stock shares acquired	0
Treasury stock available for repurchase	$ 42,400,000
Minimum tax withholding obligations
Equity, Class of Treasury Stock [Line Items]
Treasury stock shares acquired	22,000
Treasury stock value	$ 900,000

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)Segment	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	3
Revenues	$ 149,040	$ 149,661
Assets	2,100,251		$ 2,116,877
United States
Segment Reporting Information [Line Items]
Revenues	128,000	$ 128,000
Assets	$ 1,500,000		$ 1,500,000

Segment Reporting (Detail)

Segment Reporting (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenues	$ 149,040	$ 149,661
Costs and expenses:
Depreciation and amortization	17,492	17,335
Total costs and expenses	124,852	114,171
Income from operations	24,188	35,490
Interest expense, net of interest income	9,245	10,760
Income tax provision (benefit)	6,639	6,523
Capital expenditures for additions to rental fleet, excluding acquisitions	10,051	23,016
Storage Solutions
Revenues:
Revenues	121,989	118,727
Costs and expenses:
Depreciation and amortization	11,075	10,723
Total costs and expenses	99,296	87,165
Income from operations	22,693	31,562
Interest expense, net of interest income	6,569	8,065
Income tax provision (benefit)	7,026	6,159
Capital expenditures for additions to rental fleet, excluding acquisitions	5,537	12,762
Storage Solutions | North America
Revenues:
Revenues	101,792	97,767
Costs and expenses:
Depreciation and amortization	9,305	8,989
Total costs and expenses	83,654	70,358
Income from operations	18,138	27,409
Interest expense, net of interest income	6,462	7,930
Income tax provision (benefit)	6,251	5,395
Capital expenditures for additions to rental fleet, excluding acquisitions	5,200	11,841
Storage Solutions | United Kingdom
Revenues:
Revenues	20,197	20,960
Costs and expenses:
Depreciation and amortization	1,770	1,734
Total costs and expenses	15,642	16,807
Income from operations	4,555	4,153
Interest expense, net of interest income	107	135
Income tax provision (benefit)	775	764
Capital expenditures for additions to rental fleet, excluding acquisitions	337	921
Tank & Pump Solutions Segment
Revenues:
Revenues	27,051	30,934
Costs and expenses:
Depreciation and amortization	6,417	6,612
Total costs and expenses	25,556	27,006
Income from operations	1,495	3,928
Interest expense, net of interest income	2,676	2,695
Income tax provision (benefit)	(387)	364
Capital expenditures for additions to rental fleet, excluding acquisitions	4,514	10,254
Rental
Revenues:
Revenues	140,656	142,172
Rental | Storage Solutions
Revenues:
Revenues	114,744	112,725
Rental | Storage Solutions | North America
Revenues:
Revenues	96,469	93,516
Rental | Storage Solutions | United Kingdom
Revenues:
Revenues	18,275	19,209
Rental | Tank & Pump Solutions Segment
Revenues:
Revenues	25,912	29,447
Sales
Revenues:
Revenues	8,316	7,223
Costs and expenses:
Cost of sales	5,102	4,602
Sales | Storage Solutions
Revenues:
Revenues	7,206	5,777
Costs and expenses:
Cost of sales	4,538	3,816
Sales | Storage Solutions | North America
Revenues:
Revenues	5,284	4,026
Costs and expenses:
Cost of sales	3,061	2,413
Sales | Storage Solutions | United Kingdom
Revenues:
Revenues	1,922	1,751
Costs and expenses:
Cost of sales	1,477	1,403
Sales | Tank & Pump Solutions Segment
Revenues:
Revenues	1,110	1,446
Costs and expenses:
Cost of sales	564	786
Other
Revenues:
Revenues	68	266
Other | Storage Solutions
Revenues:
Revenues	39	225
Other | Storage Solutions | North America
Revenues:
Revenues	39	225
Other | Tank & Pump Solutions Segment
Revenues:
Revenues	29	41
Rental Selling and General Expenses
Costs and expenses:
Cost of sales	102,258	92,234
Rental Selling and General Expenses | Storage Solutions
Costs and expenses:
Cost of sales	83,683	72,626
Rental Selling and General Expenses | Storage Solutions | North America
Costs and expenses:
Cost of sales	71,288	58,956
Rental Selling and General Expenses | Storage Solutions | United Kingdom
Costs and expenses:
Cost of sales	12,395	13,670
Rental Selling and General Expenses | Tank & Pump Solutions Segment
Costs and expenses:
Cost of sales	$ 18,575	$ 19,608

Assets Segments (Detail)

Assets Segments (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	$ 710,053	$ 713,404
Intangibles, net	50,629	51,185
Rental fleet, net	960,177	966,223
Storage Solutions
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	528,837	532,188
Intangibles, net	3,453	2,774
Rental fleet, net	826,718	833,860
Storage Solutions | North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	474,809	474,622
Intangibles, net	3,234	2,518
Rental fleet, net	691,995	689,424
Storage Solutions | United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	54,028	57,566
Intangibles, net	219	256
Rental fleet, net	134,723	144,436
Tank & Pump Solutions Segment
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	181,216	181,216
Intangibles, net	47,176	48,411
Rental fleet, net	$ 133,459	$ 132,363

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - $ / shares	Apr. 29, 2020	Mar. 31, 2020	Mar. 31, 2019
Subsequent Event [Line Items]
Dividend declared		$ 0.30	$ 0.28
Subsequent Event
Subsequent Event [Line Items]
Dividend declared date	Apr. 29, 2020
Dividend declared	$ 0.303
Dividend payable date	May 27, 2020
Closing date of stockholders on record for dividend entitlement	May 13, 2020

Condensed Consolidating Finan_3

Condensed Consolidating Financial Information - Additional Information (Detail)	Mar. 31, 2020
Equity Method Investments And Joint Ventures [Abstract]
Percentage of ownership owned	100.00%

Condensed Consolidating Balance

Condensed Consolidating Balance Sheets (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 10,795	$ 8,053
Receivables, net	99,259	104,390
Inventories	9,540	9,517
Rental fleet, net	960,177	966,223
Property, plant and equipment, net	153,824	157,183
Operating lease assets	91,521	93,116
Other assets	14,453	13,806
Intangibles, net	50,629	51,185
Goodwill	710,053	713,404
Total assets	2,100,251	2,116,877
Liabilities:
Accounts payable	40,299	31,554
Accrued liabilities	63,405	77,069
Operating lease liabilities	93,437	94,932
Lines of credit	557,500	555,400
Obligations under finance leases	75,533	74,399
Senior notes, net	247,287	247,127
Deferred income taxes	198,420	195,034
Total liabilities	1,275,881	1,275,515
Commitments and contingencies
Stockholders' equity:
Common stock	506	504
Additional paid-in capital	641,515	638,083
Retained earnings	440,144	445,285
Accumulated other comprehensive loss	(79,478)	(65,093)
Treasury stock, at cost	(178,317)	(177,417)
Total stockholders' equity	824,370	841,362	$ 825,157	$ 810,269
Total liabilities and stockholders' equity	2,100,251	2,116,877
Eliminations
ASSETS
Intercompany receivables	(178,034)	(177,837)
Total assets	(178,034)	(177,837)
Liabilities:
Intercompany payables	(30,035)	(29,838)
Total liabilities	(30,035)	(29,838)
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	(178,034)	(177,837)
Guarantors
ASSETS
Cash and cash equivalents	1,001	559
Receivables, net	85,223	90,153
Inventories	7,868	7,210
Rental fleet, net	818,468	814,129
Property, plant and equipment, net	129,846	132,532
Operating lease assets	70,553	69,911
Other assets	13,419	12,531
Intangibles, net	50,403	50,920
Goodwill	651,707	651,137
Intercompany receivables	145,874	146,008
Total assets	1,974,362	1,975,090
Liabilities:
Accounts payable	35,265	25,156
Accrued liabilities	55,897	68,916
Operating lease liabilities	73,108	72,453
Lines of credit	557,500	555,400
Obligations under finance leases	75,465	74,319
Senior notes, net	247,287	247,127
Deferred income taxes	179,796	175,291
Intercompany payables	29,824	29,782
Total liabilities	1,254,142	1,248,444
Commitments and contingencies
Stockholders' equity:
Common stock	506	504
Additional paid-in capital	641,515	638,083
Retained earnings	256,516	265,476
Treasury stock, at cost	(178,317)	(177,417)
Total stockholders' equity	720,220	726,646
Total liabilities and stockholders' equity	1,974,362	1,975,090
Non-Guarantors
ASSETS
Cash and cash equivalents	9,794	7,494
Receivables, net	14,036	14,237
Inventories	1,672	2,307
Rental fleet, net	141,709	152,094
Property, plant and equipment, net	23,978	24,651
Operating lease assets	20,968	23,205
Other assets	1,034	1,275
Intangibles, net	226	265
Goodwill	58,346	62,267
Intercompany receivables	32,160	31,829
Total assets	303,923	319,624
Liabilities:
Accounts payable	5,034	6,398
Accrued liabilities	7,508	8,153
Operating lease liabilities	20,329	22,479
Obligations under finance leases	68	80
Deferred income taxes	18,624	19,743
Intercompany payables	211	56
Total liabilities	51,774	56,909
Commitments and contingencies
Stockholders' equity:
Additional paid-in capital	147,999	147,999
Retained earnings	183,628	179,809
Accumulated other comprehensive loss	(79,478)	(65,093)
Total stockholders' equity	252,149	262,715
Total liabilities and stockholders' equity	$ 303,923	$ 319,624

Condensed Consolidating Stateme

Condensed Consolidating Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenues	$ 149,040	$ 149,661
Costs and expenses:
Depreciation and amortization	17,492	17,335
Total costs and expenses	124,852	114,171
Income from operations	24,188	35,490
Other income (expense):
Interest income	12
Interest expense	(9,257)	(10,760)
Deferred financing costs write-off		(123)
Foreign currency exchange	(3)	1
Income before income tax provision	14,940	24,608
Income tax provision	6,639	6,523
Net income	8,301	18,085
Guarantors
Revenues:
Revenues	127,997	127,992
Costs and expenses:
Depreciation and amortization	15,650	15,518
Total costs and expenses	108,484	96,668
Income from operations	19,513	31,324
Other income (expense):
Interest income	6
Interest expense	(9,143)	(10,626)
Deferred financing costs write-off		(123)
Foreign currency exchange	2
Income before income tax provision	10,378	20,575
Income tax provision	5,895	5,751
Net income	4,483	14,824
Non-Guarantors
Revenues:
Revenues	21,043	21,669
Costs and expenses:
Depreciation and amortization	1,842	1,817
Total costs and expenses	16,368	17,503
Income from operations	4,675	4,166
Other income (expense):
Interest income	6
Interest expense	(114)	(134)
Foreign currency exchange	(5)	1
Income before income tax provision	4,562	4,033
Income tax provision	744	772
Net income	3,818	3,261
Rental
Revenues:
Revenues	140,656	142,172
Rental | Guarantors
Revenues:
Revenues	121,576	122,269
Rental | Non-Guarantors
Revenues:
Revenues	19,080	19,903
Sales
Revenues:
Revenues	8,316	7,223
Costs and expenses:
Cost of sales	5,102	4,602
Sales | Guarantors
Revenues:
Revenues	6,353	5,457
Costs and expenses:
Cost of sales	3,600	3,188
Sales | Non-Guarantors
Revenues:
Revenues	1,963	1,766
Costs and expenses:
Cost of sales	1,502	1,414
Other
Revenues:
Revenues	68	266
Other | Guarantors
Revenues:
Revenues	68	266
Rental Selling and General Expenses
Costs and expenses:
Cost of sales	102,258	92,234
Rental Selling and General Expenses | Guarantors
Costs and expenses:
Cost of sales	89,234	77,962
Rental Selling and General Expenses | Non-Guarantors
Costs and expenses:
Cost of sales	$ 13,024	$ 14,272

Condensed Consolidating State_2

Condensed Consolidating Statements of Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Condensed Statement Of Income Captions [Line Items]
Net income	$ 8,301	$ 18,085
Foreign currency translation adjustment	(14,385)	5,105
Comprehensive (loss) income	(6,084)	23,190
Guarantors
Condensed Statement Of Income Captions [Line Items]
Net income	4,483	14,824
Comprehensive (loss) income	4,483	14,824
Non-Guarantors
Condensed Statement Of Income Captions [Line Items]
Net income	3,818	3,261
Foreign currency translation adjustment	(14,385)	5,105
Comprehensive (loss) income	$ (10,567)	$ 8,366

Condensed Consolidating State_3

Condensed Consolidating Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 8,301	$ 18,085
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred financing costs write-off		123
Provision for doubtful accounts	955	1,212
Amortization of deferred financing costs	455	505
Amortization of long-term liabilities		13
Share-based compensation expense	2,682	3,404
Depreciation and amortization	17,492	17,335
Gain on sale of rental fleet units	(1,444)	(1,425)
Loss on disposal of property, plant and equipment	26	18
Deferred income taxes	4,386	5,058
Foreign currency exchange	3	(1)
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables	3,365	16,180
Inventories	(154)	76
Other assets	1,381	(1,394)
Accounts payable	9,490	(1,741)
Accrued liabilities	(13,715)	(18,665)
Net cash provided by operating activities	33,223	38,783
Cash flows from investing activities:
Cash paid for business acquired, net of cash acquired	(4,808)
Additions to rental fleet, excluding acquisitions	(10,051)	(23,016)
Proceeds from sale of rental fleet	3,474	3,338
Additions to property, plant and equipment, excluding acquisitions	(4,174)	(2,919)
Proceeds from sale of property, plant and equipment	15	49
Net cash used in investing activities	(15,544)	(22,548)
Cash flows from financing activities:
Net borrowings (repayments) under lines of credit	2,100	203
Deferred financing costs		(3,254)
Principal payments on finance lease obligations	(3,204)	(2,586)
Issuance of common stock	753	1,690
Dividend payments	(13,575)	(12,426)
Purchase of treasury stock	(900)	(1,057)
Net cash used in financing activities	(14,826)	(17,430)
Effect of exchange rate changes on cash	(111)	(114)
Net increase (decrease) in cash	2,742	(1,309)
Cash and cash equivalents at beginning of period	8,053	5,605
Cash and cash equivalents at end of period	10,795	4,296
Guarantors
Cash flows from operating activities:
Net income	4,483	14,824
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred financing costs write-off		123
Provision for doubtful accounts	872	1,105
Amortization of deferred financing costs	455	505
Amortization of long-term liabilities		13
Share-based compensation expense	2,614	3,208
Depreciation and amortization	15,650	15,518
Gain on sale of rental fleet units	(1,304)	(1,273)
Loss on disposal of property, plant and equipment	26	21
Deferred income taxes	4,272	4,931
Foreign currency exchange	(2)
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables	4,125	15,776
Inventories	(658)	342
Other assets	1,197	(1,580)
Accounts payable	10,644	(1,282)
Accrued liabilities	(13,634)	(18,735)
Intercompany	464	(92)
Net cash provided by operating activities	29,204	33,404
Cash flows from investing activities:
Cash paid for business acquired, net of cash acquired	(4,808)
Additions to rental fleet, excluding acquisitions	(9,673)	(22,098)
Proceeds from sale of rental fleet	2,889	2,698
Additions to property, plant and equipment, excluding acquisitions	(2,367)	(1,863)
Proceeds from sale of property, plant and equipment	15	28
Net cash used in investing activities	(13,944)	(21,235)
Cash flows from financing activities:
Net borrowings (repayments) under lines of credit	2,100	4,388
Deferred financing costs		(3,254)
Principal payments on finance lease obligations	(3,196)	(2,583)
Issuance of common stock	753	1,690
Dividend payments	(13,575)	(12,426)
Purchase of treasury stock	(900)	(1,057)
Net cash used in financing activities	(14,818)	(13,242)
Net increase (decrease) in cash	442	(1,073)
Cash and cash equivalents at beginning of period	559	1,483
Cash and cash equivalents at end of period	1,001	410
Non-Guarantors
Cash flows from operating activities:
Net income	3,818	3,261
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for doubtful accounts	83	107
Share-based compensation expense	68	196
Depreciation and amortization	1,842	1,817
Gain on sale of rental fleet units	(140)	(152)
Loss on disposal of property, plant and equipment		(3)
Deferred income taxes	114	127
Foreign currency exchange	5	(1)
Changes in certain assets and liabilities, net of effect of businesses acquired:
Receivables	(760)	404
Inventories	504	(266)
Other assets	184	186
Accounts payable	(1,154)	(459)
Accrued liabilities	(81)	70
Intercompany	(464)	92
Net cash provided by operating activities	4,019	5,379
Cash flows from investing activities:
Additions to rental fleet, excluding acquisitions	(378)	(918)
Proceeds from sale of rental fleet	585	640
Additions to property, plant and equipment, excluding acquisitions	(1,807)	(1,056)
Proceeds from sale of property, plant and equipment		21
Net cash used in investing activities	(1,600)	(1,313)
Cash flows from financing activities:
Net borrowings (repayments) under lines of credit		(4,185)
Principal payments on finance lease obligations	(8)	(3)
Net cash used in financing activities	(8)	(4,188)
Effect of exchange rate changes on cash	(111)	(114)
Net increase (decrease) in cash	2,300	(236)
Cash and cash equivalents at beginning of period	7,494	4,122
Cash and cash equivalents at end of period	$ 9,794	$ 3,886