Interest Income and Interest Expense - Additional Information (Details) - USD ($) $ in Thousands	Feb. 28, 2022	May 31, 2021
Banking and Thrift, Interest [Abstract]
Deferred income	$ 45,752	$ 51,198
Deferred loan conversion fees	$ 39,000	$ 45,000

Total carrying amount of consideration received or receivable as of the balance sheet date representing potential earnings that were not as yet recognized as revenue or other forms of income in conformity with GAAP.

No definition available.

Name:	us-gaap_DeferredRevenueAndCredits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant