Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Comprehensive Income, Net of Tax, Attributable to Parent [Abstract]
Net income	$ 3,152	$ 1,942	$ 12,419	$ 3,065
Foreign currency translation adjustments	22	(226)	55	318
Interest rate swap	(13)	(976)	(48)	(976)
Comprehensive income	$ 3,161	$ 740	$ 12,426	$ 2,407