Consolidated Statements of Comprehensive Income (Loss) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Net income (loss) $ 7,082 $ 709 $ 609 $ (409) $ (664) $ (561) $ 10,653 $ (1,468)
Other comprehensive income (loss):                
Foreign exchange translation adjustment             71 (1)
Comprehensive income (loss)             $ 10,724 $ (1,469)