Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 66,700
Accumulated amortization of amortized intangible assets	17,500
Amortization of intangible assets	6,235	$ 6,864
Cost of Goods Sold [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	2,900	3,300	$ 2,600
Selling, general and administrative expenses [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 3,300	$ 3,600	$ 2,700