EMPLOYEE BENEFIT PLANS - Obligation and Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in benefit obligation:
Benefit obligation at beginning of year	$ 23,450	$ 18,186
Service cost	0	484
Interest cost	757	859	$ 770
Actuarial gain	(144)	277
Benefits paid	(639)	(1,660)
Curtailment gain	(3,155)	0
Other, change in actuarial assumptions	1,322	(5,304)
Benefit obligation at end of year	18,947	23,450	18,186
Change in plan assets:
Fair value of plan assets at beginning of year	13,906	14,258
Actual return on plan assets	25	487
Employer contribution	965	850
Benefits paid	(704)	(1,736)
Adjustment to fair value of plan assets	31	47
Fair value of plan assets at end of year	14,223	13,906	$ 14,258
Funded status	(4,724)	(9,544)
Accounts recognized on balance sheet as:
Total liabilities	(4,724)	(9,544)
Amounts recognized in accumulated other comprehensive income (loss) consist of:
Net loss	$ 6,267	$ 6,965