Assets Segments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	$ 711,063	$ 708,907
Intangibles, net	60,442	62,024
Rental fleet, net	999,215	989,154
Storage Solutions
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	529,847	527,691
Intangibles, net	1,805	1,956
Rental fleet, net	879,718	870,567
Storage Solutions \| North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	468,656	468,785
Intangibles, net	1,213	1,314
Rental fleet, net	715,333	714,154
Storage Solutions \| United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	61,191	58,906
Intangibles, net	592	642
Rental fleet, net	164,385	156,413
Tank & Pump Solutions Segment
Revenues from External Customers and Long-Lived Assets [Line Items]
Goodwill	181,216	181,216
Intangibles, net	58,637	60,068
Rental fleet, net	$ 119,497	$ 118,587

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
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No definition available.

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