Other Assets, Net - Schedule of Other Assets, Net (Detail) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Goodwill and Intangible Assets Disclosure [Abstract] | ||
| Deferred debt issuance costs | $ 14,198 | $ 15,487 |
| Natural gas transportation, long-term portion | 368 | 5,677 |
| Deposits | 0 | 6,893 |
| Other | 1,594 | 2,162 |
| Other assets, net | $ 16,160 | $ 30,219 |