ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period			$ (117)	$ 676	$ 676
Foreign currency translation gain (loss)	944	(2,106)	1,079	(1,303)	(793)
Balance at the end of the period	$ 962		$ 962		$ (117)