Significant Accounting Policies (Summary of Activity Related to Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	$ 24,126	$ 22,360
Acquisitions and Dispositions		(4,952)
Provisions	8,733	14,645
Write-offs	(10,635)	(8,344)
Balance at end of period	$ 22,224	24,126
Accumulated Deficit [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Accounts Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period		$ 417