EMPLOYEE STOCK PLANS - Summary of Activity (Details) - Employee stock option - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Options
Outstanding, beginning of period (in shares)	339,376	358,073	432,642
Granted (in shares)	5,000	5,000	17,500
Exercised (in shares)	0	(7,655)	(49,560)
Forfeited or expired (in shares)	(45,381)	(16,042)	(42,509)
Outstanding, end of period (in shares)	298,995	339,376	358,073
Exercisable (in shares)	203,578	162,679	109,691
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 14.13	$ 14.28	$ 14.13
Granted (in dollars per share)	9.30	13.17	18.99
Exercised (in dollars per share)	0.00	12.97	12.97
Forfeited or expired (in dollars per share)	15.17	17.73	16.24
Outstanding, end of period (in dollars per share)	13.90	14.13	14.28
Exercisable (in dollars per share)	$ 13.74	$ 13.81	$ 13.98
Weighted Average Remaining Contractual Term
Outstanding	5 years 346 days
Exercisable	5 years 277 days
Aggregate Intrinsic Value
Outstanding	$ 0
Exercisable	$ 0