Restructuring Charges (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense	$ 1,090	$ 896
Restructuring Reserve [Roll Forward]
Accrued liability beginning balance	496
Costs incurred and charged to expense	1,012
Cash payments	(1,045)
Accrued liability ending balance	463
Employee Separation Costs
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense	1,012	344
Restructuring Reserve [Roll Forward]
Accrued liability beginning balance	322
Costs incurred and charged to expense	1,012
Cash payments	(871)
Accrued liability ending balance	463
Asset Related and Other Costs
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense	78	$ 552
Restructuring Reserve [Roll Forward]
Accrued liability beginning balance	174
Costs incurred and charged to expense	0
Cash payments	(174)
Accrued liability ending balance	$ 0