Stockholders' Equity and Share-Based Compensation - Summary of Option Activity for Stock Options (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, Granted	0	0	0
Service Based Vesting Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, Outstanding, Beginning Balance	600,000
Shares, Granted	0
Shares, Exercised	(50,000)
Shares, Expired	0
Shares, Forfeited	0
Shares, Outstanding, Ending Balance	550,000	600,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Outstanding, Beginning Balance	$ 8.65
Weighted Average Exercise Price, Granted	0.00
Weighted Average Exercise Price, Exercised	8.38
Weighted Average Exercise Price, Expired	0.00
Weighted Average Exercise Price, Forfeited	0.00
Weighted Average Exercise Price, Outstanding, Ending Balance	$ 8.67	$ 8.65
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Shares, Exercisable	550,000
Shares, Expected to vest	0
Weighted Average Exercise Price, Exercisable	$ 8.67
Weighted Average Exercise Price, Expected to vest	$ 0.00
Weighted Average Remaining Contractual Life (Yrs.), Outstanding	4 years 1 month 17 days	5 years 29 days
Weighted Average Remaining Contractual Life (Yrs.), Exercisable	4 years 1 month 17 days
Weighted Average Remaining Contractual Life (Yrs.), Expected to vest	0 years
Exercised, Aggregate Intrinsic Value	$ 1,026	$ 70	$ 232
Aggregate Intrinsic Value, Outstanding	7,848	$ 10,574
Aggregate Intrinsic Value, Exercisable	7,848
Aggregate Intrinsic Value, Expected to vest	$ 0