|
Inventories (Detail) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials and supplies | $ 14,569 | $ 14,241 |
| Work-in-process | 212 | 201 |
| Finished portable storage units | 1,737 | 2,294 |
| Inventories | $ 16,518 | $ 16,736 |