INCOME TAXES - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 2,203	$ 2,635	$ 4,885
State	1,031	771	1,197
Total current	3,234	3,406	6,082
Deferred expense
Federal	117	1,268	665
State	22	81	42
Total deferred expense (benefit)	139	1,349	707
Income tax expense	$ 3,373	$ 4,755	$ 6,789