Acquisitions, Goodwill And Other Intangible Assets (Schedule of Business Acquisitions) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Business Acquisition [Line Items]
Cash consideration, net of cash acquired		$ 50,089	$ 2,779
Goodwill	$ 562,038	562,038		$ 543,180
Girard
Business Acquisition [Line Items]
Cash consideration, net of cash acquired	50,000
Fixed deferred consideration	20,000
Total fair value of consideration given	70,000
Identifiable intangible assets	35,000	35,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net, Other	14,802	14,802
Total fair value of net assets acquired	49,802	49,802
Goodwill	$ 20,198	$ 20,198