BASIS OF PRESENTATION (Details)		12 Months Ended
	Oct. 01, 2022 USD ($)	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)
Bankruptcy accounts subject to the licensing fees		$ 425,300,000	$ 934,300,000
Goodwill		9,700,000
Impairment of goodwill	$ 0		0
Investment in Disability Opportunity Fund		1,000,000.0
Investment in FRB		11,400,000	7,400,000
Investment in FHLB		9,200,000	3,100,000
Deposit with Federal Reserve Bank		226,700,000	2,300,000,000
Cash pledged as collateral			683,000	$ 693,000
Escrow deposit		$ 13,300,000	$ 10,800,000
Number of reportable operating segment | segment		1
Minimum
Premises and equipment useful life		3 years
Maximum
Premises and equipment useful life		30 years