Loans - Loans on Nonaccrual Status Narrative (Details) $ in Thousands	2 Months Ended	12 Months Ended
	Jul. 31, 2026 USD ($)	May 31, 2026 USD ($) loan	May 31, 2025 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, nonaccrual		$ 7,500	$ 26,099
% of total loans outstanding		100.00%	100.00%
Non-performing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of borrowers, nonperforming loans | loan		1
Non-performing loans | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, nonaccrual		$ 8,000	$ 26,000
% of total loans outstanding		0.02%	0.07%
Proceeds from collection of finance receivables		$ 18,000
Non-performing loans | Doubtful | Subsequent event
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, nonaccrual	$ 5,000
Proceeds from collection of finance receivables	$ 3,000