Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement of Other Comprehensive Income [Abstract]
Net (loss) income (1)	$ 13,907	$ (1,515)	$ (4,854)
Other comprehensive income (loss):
Foreign currency translation income (loss)	17	(11)	(3)
Comprehensive income (loss)	$ 13,924	$ (1,526)	$ (4,857)