Equity Based Compensation - Summary of Option Activity for Stock Options (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, Outstanding, Beginning Balance	550,000
Shares, Granted	0	0
Shares, Exercised	0
Shares, Expired	0
Shares, Forfeited	0
Shares, Outstanding, Ending Balance	550,000		550,000
Shares, Exercisable	550,000
Shares, Expected to vest	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Outstanding, Beginning Balance (in usd per share)	$ 8.67
Weighted Average Exercise Price, Granted (in usd per share)	0.00
Weighted Average Exercise Price, Exercised (in usd per share)	0.00
Weighted Average Exercise Price, Expired (in usd per share)	0.00
Weighted Average Exercise Price, Forfeited (in usd per share)	0.00
Weighted Average Exercise Price, Outstanding, Ending Balance (in usd per share)	8.67		$ 8.67
Weighted Average Exercise Price, Exercisable (in usd per share)	8.67
Weighted Average Exercise Price, Expected to vest (in usd per share)	$ 0.00
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Contractual Life (Yrs.), Outstanding	3 years 4 months 24 days		4 years 1 month 6 days
Weighted Average Remaining Contractual Life (Yrs.), Exercisable	3 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding	$ 13,211		$ 7,848
Aggregate Intrinsic Value, Exercised	0
Aggregate Intrinsic Value, Exercisable	13,211
Aggregate Intrinsic Value, Expected to vest	$ 0