Mobile Mini, Inc. - Organization and Description of Business - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended
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

The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

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Balance Type:	na
Period Type:	duration