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Goodwill and Other Intangible Assets (Goodwill) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 04, 2019
Feb. 11, 2019
Dec. 31, 2019
Dec. 31, 2018
Goodwill [Roll Forward]        
Goodwill beginning balance     $ 400,440 $ 401,954
Goodwill, Acquired During Period $ 1,700 $ 215,800 217,482 0
Foreign currency translation     120 (1,514)
Goodwill ending balance     618,042 400,440
Accumulated goodwill impairment loss     $ 107,000 $ 107,000