Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Costs
Expenses, net	$ 2,889	$ 3,817
Cash payments	$ (3,955)	(6,047)
Minimum
Restructuring Costs
Restructuring reserve, expected payment period	12 months
Maximum
Restructuring Costs
Restructuring reserve, expected payment period	24 months
Severance and other exit costs
Restructuring Costs
Balance Beginning	$ 10,063	12,006
Expenses, net	2,889	3,817
Cash payments	(3,955)	(6,047)
Noncash activity	(227)	(763)
Balance Ending	$ 8,770	$ 9,013