Equity Method Investment - Additional Information (Detail) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Oct. 31, 2013 |
Oct. 31, 2012 |
Dec. 31, 2013 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Schedule Of Results Related To Equity Accounted Investees [Line Items] | ||||||
| Contribution to joint venture | $ 10,000 | $ 8,300 | ||||
| Proceeds from sale of joint venture | $ 109,100 | |||||
| Escrow termination date | Jun. 01, 2014 | |||||
| Post-closing working capital adjustments | $ 200 | |||||
| Pre-Tax Gain on sale of equity interest joint venture | $ 90,700 | $ 90,743 | 90,743 | |||
| Escrow [Member] | ||||||
| Schedule Of Results Related To Equity Accounted Investees [Line Items] | ||||||
| Restricted cash | $ 7,400 | $ 7,400 | ||||