Goodwill and Other Intangible Assets (Q2 2021 Acquisitions) (Details) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	May 06, 2021 USD ($) numberOfEmployees	Mar. 31, 2021 USD ($) acquisition	Mar. 31, 2020 USD ($)	Dec. 31, 2020 acquisition
Business Acquisition [Line Items]
Business combinations, number of acquisitions | acquisition		2		5
Business combinations, cash, net of cash acquired		$ 88,646	$ 0
Subsequent Event [Member]
Business Acquisition [Line Items]
Business combinations, number of acquisitions | numberOfEmployees	2
2021 Acquisitions
Business Acquisition [Line Items]
Business combinations, cash, net of cash acquired		$ 90,000
2021 Acquisitions | Subsequent Event [Member]
Business Acquisition [Line Items]
Business combinations, cash, net of cash acquired	$ 420,000