Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)		3 Months Ended	12 Months Ended
	Nov. 20, 2019	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment charges		$ 0
Goodwill acquired during period			$ 335,000	$ 17,343,000
Amortization of intangible assets	$ 10,300,000		7,259,000	6,309,000
Amortized intangible assets, gross			78,000,000.0
Amortized intangible assets, accumulated amortization			31,100,000
Cost of Sales
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets			(3,000,000.0)	(3,000,000.0)	$ (2,900,000)
Selling, General and Administrative Expenses
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets			$ (4,300,000)	$ (3,300,000)	$ (3,300,000)
CirComp GmbH
Finite-Lived Intangible Assets [Line Items]
Goodwill acquired during period	$ 17,700,000