Acquisitions Of Businesses (Details) $ in Thousands		12 Months Ended
	Mar. 11, 2022 Company	Dec. 31, 2021 USD ($) Company	Mar. 31, 2022 USD ($)
Business Acquisition [Line Items]
Number of businesses acquired | Company	1	8
Goodwill		$ 890,268	$ 891,536
2021 Acquisitions
Business Acquisition [Line Items]
Purchase price		131,200
Working capital acquired		22,900
Other net liabilities		600
Goodwill		38,300
Identifiable intangible assets		$ 70,600