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Realignment Costs - Realignment Activities Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Reserve [Roll Forward]
Balance, December 31, 2019			$ 491
Realignment costs	$ 9,943	$ (49)	10,012	$ (492)
Payments			(739)
Adjustments			(71)
Balance, September 30, 2020	9,693		9,693
2020 Program
Restructuring Reserve [Roll Forward]
Balance, December 31, 2019			0
Realignment costs	10,020		10,020
Payments			(379)
Adjustments			(71)
Balance, September 30, 2020	9,570		9,570
Prior Program
Restructuring Reserve [Roll Forward]
Balance, December 31, 2019			491
Realignment costs			(8)
Payments			(360)
Adjustments			0
Balance, September 30, 2020	$ 123		$ 123