CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 22,427	$ 12,080	$ 13,929
Other comprehensive income:
Foreign currency translation adjustment, net of tax expense (benefit) of $136, $(4) and $(44), respectively	555	(16)	(156)
Comprehensive income	$ 22,982	$ 12,064	$ 13,773