Details of Certain Balance Sheet Accounts - Other Assets (Detail) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Details Of Certain Balance Sheet Accounts [Abstract] | ||
| Workers compensation deposits | $ 300 | $ 300 |
| Health insurance deposits | 1,200 | 1,200 |
| Other miscellaneous deposit | 1,500 | 700 |
| Deferred financing fees | 3,400 | 2,800 |
| Investments | 25,700 | 23,800 |
| Other | 4,100 | 4,400 |
| Other assets, net | $ 36,172 | $ 33,161 |