ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning, net of tax		$ (4,382)	$ (4,368)	$ (5,702)
Other comprehensive loss before reclassification		(471)	(389)	407
Plan amendment cost	[1]	(5,963)
Reclassification to net income	[1]	997	375	927
TOTAL OTHER COMPREHENSIVE (LOSS) INCOME		(5,437)	(14)	1,334
Balance, ending, net of tax		(9,819)	(4,382)	(4,368)
Unrealized gain (loss) on marketable securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning, net of tax		(28)	(24)	(18)
Other comprehensive loss before reclassification		(83)	(4)	(6)
Plan amendment cost	[1]	0
Reclassification to net income	[1]	0	0	0
TOTAL OTHER COMPREHENSIVE (LOSS) INCOME		(83)	(4)	(6)
Balance, ending, net of tax		(111)	(28)	(24)
Actuarial loss on retirement plan [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning, net of tax	[2]	(4,354)	(4,344)	(5,684)
Other comprehensive loss before reclassification	[2]	(388)	(385)	413
Plan amendment cost	[1]	(5,963)
Reclassification to net income	[1],[2]	997	375	927
TOTAL OTHER COMPREHENSIVE (LOSS) INCOME	[2]	(5,354)	(10)	1,340
Balance, ending, net of tax	[2]	$ (9,708)	$ (4,354)	$ (4,344)

[1] The Company reclassified amortization of prior service cost and actuarial loss for its retirement plan from accumulated other comprehensive loss to net income in the amounts of $1.0 million, $375,000 and $927,000 for the years ended December 31, 2015, 2014 and 2013, respectively.

[2] Refer to Note 13: Supplemental Executive Retirement Plan.