Restructuring and Other Charges (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Employee	Mar. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 864	$ (42)
Number of employees included in severance expense | Employee	14
Severance costs, employees notified in previous periods	$ 500
Restructuring and related cost, expected cost remaining	200
Business Combination, Integration Related Costs	517	193
Restructuring and Business Combination Related Expenses, Facility Reductions	190	0
Severance Costs, net		(100)
Restructuring and acquisition-related charges, net	1,571	$ 235
Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 900