Segment Reporting - Summary of Long-Lived Assets (Exclusive of Intangible and Other Assets, Net and Goodwill) Classified by Geographic Location (Detail) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Long-lived assets | $ 250,909 | $ 250,126 |
| United States [Member] | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Long-lived assets | 168,144 | 163,963 |
| Canada [Member] | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Long-lived assets | $ 82,765 | $ 86,163 |