ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Components of accumulated other comprehensive income (loss):
Accumulated net unrealized gain on available-for-sale securities, net of tax benefit of $1.0 million	$ 1,525,000
Foreign currency translation adjustments	549,000	(1,547,000)
Total accumulated other comprehensive income (loss)	2,074,000	(1,547,000)
Tax benefit on accumulated net unrealized gain on available-for-sale securities	$ 1,000,000