ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accumulated other comprehensive loss [Abstract]
Currency translation adjustment	$ 312	$ 646
Unrealized holding gains (losses) on available-for-sale securities, net of taxes of $89 and ($33) as of June 30, 2012 and December 31, 2011	143	(62)
Unfunded SERP liability, net of taxes of ($906) and ($941) as of June 30, 2012 and December 31, 2011	(2,054)	(2,134)
Accumulated other comprehensive loss	(1,599)	(1,550)
Accumulated other comprehensive loss, tax [Abstract]
Unrealized holding gains (losses) on available-for-sale securities, tax	89	(33)
Change in unfunded SERP liability, tax	$ (906)	$ (941)