Restructuring and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 1,061		$ 2,318	$ 1,456
Business Combination, Integration Related Costs	226	$ 0	439	146
Severance Costs, net		(655)
Restructuring and Business Combination Related Expenses, Facility Reductions	57	0	57
Restructuring and acquisition-related charges, net	1,344	$ 655	$ 2,814	$ 1,602
Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,061
Additional severance costs not yet recognized	$ 1,000