ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Components of accumulated other comprehensive (loss) income:
Accumulated net unrealized loss on available-for-sale securities, net of tax benefit $1.0 million as of December 31, 2010			$ (1,478)
Foreign currency translation adjustments	(1,547)		1,759
Total accumulated other comprehensive (loss) income	(1,547)	[1]	281	[1]
Tax benefit			$ 978

[1] Stock Split - On January 11, 2012, the Company announced that its Board of Directors had approved a two-for-one stock split of its common stock to be effected in the form of a 100% stock dividend. The stock dividend was issued on February 15, 2012. See Note 1 for additional information.