Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Other Comprehensive Income [Abstract]
Net (loss) income	$ (1,123)	$ 1,963
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available-for-sale securities	8	(5)
Foreign currency translation adjustment	248	(391)
Unrealized gain on derivative instruments	9	42
Other comprehensive income (loss), net of tax	265	(354)
Total comprehensive (loss) income	$ (858)	$ 1,609