Rental Fleet - Additional Information (Detail) - USD ($) $ in Thousands |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Dec. 31, 2016 |
|
| Property Subject to or Available for Operating Lease [Line Items] | |||
| Rental fleet, net | $ 964,141 | $ 950,065 | |
| Storage Solutions | |||
| Property Subject to or Available for Operating Lease [Line Items] | |||
| Net orderly liquidation appraisal value of rental fleet | 1,100,000 | ||
| Rental fleet, net | 843,031 | $ 825,860 | |
| Depreciation expense | $ 15,300 | $ 16,100 | |