Condensed Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Statement of Comprehensive Income [Abstract]        
Net income $ 2,425 $ 8,039 $ 14,436 $ 21,300
Other comprehensive income (loss), net of tax:        
Unrecognized actuarial gain, net of tax of $4, $0, $12 and $0, respectively 9   26  
Foreign currency translation adjustments, net of tax of $118, $546, $688 and $(932), respectively 131 (23) 677 (2,569)
Comprehensive income $ 2,565 $ 8,016 $ 15,139 $ 18,731