Significant Accounting Policies (Narrative) (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2022 USD ($) item	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)
Significant Accounting Policies [Line Items]
Allowance for credit losses	$ 22,224	$ 24,126	$ 22,360
Equity method investment, impairment loss	$ 0
Minimum [Member]
Significant Accounting Policies [Line Items]
Number of lease renewal options | item	1
Lease renewal option, extension period	1 month
Maximum [Member]
Significant Accounting Policies [Line Items]
Lease renewal option, extension period	1 year
Capitalized Software Developed for Internal Use [Member]
Significant Accounting Policies [Line Items]
Useful life	3 years
Capitalized Software Developed for Sale [Member]
Significant Accounting Policies [Line Items]
Useful life	3 years