EMPLOYEE STOCK COMPENSATION - Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Number of Shares
Outstanding at beginning of period (in shares)	968,591
Exercised (in shares)	(91,000)
Outstanding at end of period (in shares)	877,591	968,591
Exercisable at end of period (in shares)	364,253
Weighted- Average Exercise Price per Share
Outstanding at beginning of period (in dollars per share)	$ 13.95
Exercised (in dollars per share)	12.06
Outstanding at end of period (in dollars per share)	14.14	$ 13.95
Exercisable at end of period (in dollars per share)	$ 12.84
Weighted- Average Remaining Contract Term
Outstanding	6 years 6 months 7 days	6 years 4 months 10 days
Exercised	4 years 9 months 27 days
Exercisable at end of period	6 years 5 months 17 days
Aggregated Intrinsic Value (In thousands)
Outstanding	$ 5,755	$ 3,336
Exercisable at end of period	$ 2,862