ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated other comprehensive (loss) income [Abstract]
Foreign currency translation adjustment				$ (19,305)	$ (9,351)	$ 1,904
Unrealized holding gain on available-for-sale securities, net of taxes of $265, $259 and $169 as of December 31, 2015, 2014 and 2013				434	429	282
Unfunded SERP liability, net of taxes of ($1,327), ($1,325) and ($693) as of December 31, 2015, 2014 and 2013				(3,005)	(3,026)	(1,541)
Accumulated other comprehensive (loss) income		$ (21,876)	$ (11,948)	(21,876)	(11,948)	645
Accumulated other comprehensive loss, tax [Abstract]
Unrealized holding gains on available-for-sale securities, tax				265	259	169
Change in unfunded SERP liability, tax				(1,327)	(1,325)	(693)
Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]
Balance at beginning of period		(11,948)	645
Other comprehensive income (loss) before reclassifications		(10,182)	(12,775)
Amounts reclassified from accumulated other comprehensive income (loss)		254	182
Net current period other comprehensive income (loss)		(9,928)	(12,593)
Balance at end of period		(21,876)	(11,948)
Foreign Currency Translation Adjustment [Member]
Accumulated other comprehensive (loss) income [Abstract]
Accumulated other comprehensive (loss) income		(9,351)	(9,351)	(19,305)	(9,351)	1,904
Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]
Balance at beginning of period		(9,351)	1,904
Other comprehensive income (loss) before reclassifications		(9,954)	(11,255)
Amounts reclassified from accumulated other comprehensive income (loss)			0
Net current period other comprehensive income (loss)		(9,954)	(11,255)
Balance at end of period		(19,305)	(9,351)
Unrealized Holding Gains on Available-for-Sale Securities [Member]
Accumulated other comprehensive (loss) income [Abstract]
Accumulated other comprehensive (loss) income		429	282	434	429	282
Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]
Balance at beginning of period		429	282
Other comprehensive income (loss) before reclassifications		5	147
Amounts reclassified from accumulated other comprehensive income (loss)	[1]		0
Net current period other comprehensive income (loss)		5	147
Balance at end of period		434	429
Unfunded SERP Liability [Member]
Accumulated other comprehensive (loss) income [Abstract]
Accumulated other comprehensive (loss) income		(3,026)	(3,026)	$ (3,005)	$ (3,026)	$ (1,541)
Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]
Balance at beginning of period		(3,026)	(1,541)
Other comprehensive income (loss) before reclassifications		(233)	(1,667)
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	254	182
Net current period other comprehensive income (loss)		21	(1,485)
Balance at end of period		$ (3,005)	$ (3,026)

[1] This reclassification relates to the amortization of prior service costs and gains/losses associated with the Company's SERP plan. This expense is allocated between cost of sales and selling, general and administrative expense based upon the employment classification of the plan participants.