Goodwill and Other Intangible Assets (Other Intangible Assets) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Amortized Intangible Assets [Line Items]
Goodwill and other long-lived asset impairment charge	$ 693	$ 0	$ 693	$ 0
Amortization of Intangible Assets
Amortization of intangible assets	12,880	$ 11,399	25,940	$ 21,783
Estimated amortization of intangible assets, remainder of 2019	26,000		26,000
Estimated amortization of intangible assets, 2020	49,000		49,000
Estimated amortization of intangible assets, 2021	43,000		43,000
Estimated amortization of intangible assets, 2022	37,000		37,000
Estimated amortization of intangible assets, 2023	29,000		29,000
Estimated amortization of intangible assets, after 2023	$ 54,000		$ 54,000