Significant Accounting Policies (Summary of Activity Related to Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Significant Accounting Policies [Abstract]
Balance at beginning of period	$ 22,224	$ 24,126
Provisions	190	1,477
Write-offs	(5,418)	(2,523)
Balance at end of period	$ 16,996	$ 23,080