Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accrued Liabilities [Abstract]
Accrued salaries and benefits	$ 5,702	$ 6,875
Accrued incentive compensation	7,912	8,302
Accrued Professional Fees	4,177	394
Accrued value added tax	1,472	993
Restructuring Reserve, Current	423	6,539	$ 1,369
Restructuring Reserve	1,530	6,539
Miscellaneous acquisition-related accrual	2,750	1,604
Outside sales commissions	1,141	1,023
Other Accrued Liabilities, Current	2,319	3,218
Accrued liabilities	$ 25,896	$ 28,948