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Revenue Recognition - Summary of Disaggregates the Company's Revenue by Lease and Non Lease (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Leasing revenues |  | $ 107,200 |  | $ 304,200 |  |  |
Total non-lease revenues |  |  |  | 84,613 |  | $ 70,735 |
Total revenues |  | 173,562 | $ 143,147 | 423,009 |  | 365,215 |
Leasing [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Leasing revenues |  | 107,215 | 94,184 | 304,154 |  | 267,744 |
Non-lease Rental Related Services [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 16,039 | 13,120 | 38,369 |  | 30,716 |
Non-lease Sales [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 49,791 | 35,364 | 78,877 |  | 65,333 |
Non-lease Other [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 517 | 479 | 1,609 |  | 1,422 |
Non-lease Revenues [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 66,347 | 48,963 | 118,855 |  | 97,471 |
Mobile Modular [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  |  |  | 32,434 |  | 31,667 |
Total revenues |  | 86,302 | 74,891 | 219,116 |  | 188,613 |
Mobile Modular [Member] | Leasing [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Leasing revenues |  | 61,519 | 52,036 | 171,995 |  | 146,672 |
Mobile Modular [Member] | Non-lease Rental Related Services [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 8,105 | 5,697 | 15,651 |  | 11,226 |
Mobile Modular [Member] | Non-lease Sales [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 16,676 | 17,140 | 31,401 |  | 30,694 |
Mobile Modular [Member] | Non-lease Other [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 2 | 18 | 69 |  | 21 |
Mobile Modular [Member] | Non-lease Revenues [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 24,783 | 22,855 | 47,121 |  | 41,941 |
TRS-RenTelco [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  |  |  | 18,601 |  | 18,321 |
Total revenues |  | 34,090 | 28,137 | 97,076 |  | 86,527 |
TRS-RenTelco [Member] | Leasing [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Leasing revenues |  | 28,284 | 23,206 | 79,450 |  | 69,183 |
TRS-RenTelco [Member] | Non-lease Rental Related Services [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 717 | 642 | 1,958 |  | 1,816 |
TRS-RenTelco [Member] | Non-lease Sales [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 4,614 | 3,828 | 14,235 |  | 14,179 |
TRS-RenTelco [Member] | Non-lease Other [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 475 | 461 | 1,433 |  | 1,349 |
TRS-RenTelco [Member] | Non-lease Revenues [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 5,806 | 4,931 | 17,626 |  | 17,344 |
Adler Tanks [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  |  |  | 1,340 |  | 916 |
Total revenues |  | 24,809 | 26,017 | 74,579 |  | 70,244 |
Adler Tanks [Member] | Leasing [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Leasing revenues |  | 17,412 | 18,942 | 52,709 |  | 51,889 |
Adler Tanks [Member] | Non-lease Rental Related Services [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 7,217 | 6,781 | 20,760 |  | 17,674 |
Adler Tanks [Member] | Non-lease Sales [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 140 | 294 | 1,003 |  | 629 |
Adler Tanks [Member] | Non-lease Other [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 40 |  | 107 |  | 52 |
Adler Tanks [Member] | Non-lease Revenues [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 7,397 | 7,075 | 21,870 |  | 18,355 |
Enviroplex [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues | [1] |  |  | 32,238 |  | 19,831 |
Total revenues |  | 28,361 | 14,102 | 32,238 | [1] | 19,831 | [1]
Enviroplex [Member] | Non-lease Sales [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | 28,361 | 14,102 | 32,238 |  | 19,831 |
Enviroplex [Member] | Non-lease Revenues [Member] |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |
Total non-lease revenues |  | $ 28,361 | $ 14,102 | $ 32,238 |  | $ 19,831 |
[1] | Gross Enviroplex sales revenues were $32,238 and $21,191 for the nine months ended September 30, 2019 and 2018, respectively. There were $1,360 inter-segment sales to Mobile Modular in the nine months ended September 30, 2018, which required elimination in consolidation. There were no inter-segment sales in the nine months ended September 30, 2019.

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- Definition Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919372-209981 + Details
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