Finance Receivables - Summary of reconciliation of changes in allowance for credit losses on contracts (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2024		Mar. 31, 2023
Accounts Notes And Loans Receivable [Line Items]
Provision for credit losses		$ 2,570		$ 40,658
Finance Receivables [Member]
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of year		17,396		2,949
Impact of adoption of ASU 2016-13		210
Provision for credit losses		14,823	[1]	40,658
Charge-offs		(24,832)	[2]	(32,012)
Recoveries		4,656	[2]	5,801
Reversal of allowance for credit losses	[1]	(12,253)
Balance at end of year		0		17,396
Finance Receivables [Member] | Indirect
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of year		16,265		1,961
Impact of adoption of ASU 2016-13		(562)
Provision for credit losses		12,713	[1]	37,125
Charge-offs		(21,337)	[2]	(28,391)
Recoveries		4,210	[2]	5,570
Reversal of allowance for credit losses	[1]	(11,289)
Balance at end of year		0		16,265
Finance Receivables [Member] | Direct
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of year		1,131		988
Impact of adoption of ASU 2016-13		772
Provision for credit losses		2,110	[1]	3,533
Charge-offs		(3,495)	[2]	(3,621)
Recoveries		446	[2]	231
Reversal of allowance for credit losses	[1]	(964)
Balance at end of year		$ 0		$ 1,131

[1] Provision for credit losses and reversal of allowance for credit losses is presented net as "Provision for credit losses" in the Consolidated Statements of Operations.

[2] Amounts shown represents charge-offs and recoveries through October 31, 2023. Since November 1, 2023 charge-offs and recoveries are included in "Fair value and other adjustment, net" in the Consolidated Statements of Operations.