INCOME TAXES - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 4,885	$ 2,830	$ 862
State	1,197	591	124
Total current	6,082	3,421	986
Deferred expense (benefit)
Federal	665	(371)	(1,017)
State	42	(24)	(65)
Total deferred expense (benefit)	707	(395)	(1,082)
Income tax expense (benefit)	$ 6,789	$ 3,026	$ (96)