Commitments and Contingencies - Restructuring Reserve (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Severance and Other employee related costs
Restructuring Reserve [Roll Forward]
Balance at January 1, 2016	$ 0
Provision for cost saving measures	1,557
Cash payments made	(914)
Balance at December 31, 2016	643
Facility Closures and Asset impairments
Restructuring Reserve [Roll Forward]
Balance at January 1, 2016	0
Provision for cost saving measures	166
Cash payments made	(63)
Balance at December 31, 2016	$ 103