SECURITIES - Additional Information (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($)
Total	$ 373,444,000	$ 437,916,000
Aggregate carrying value	241,385,000	318,074,000
Proceeds from sales of debt securities available-for-sale	58,675,000	0
Impairment losses realized on available-for-sale debt securities	0	0
Marketable equity securities, at fair value	1,699,000	1,962,000
Accumulated other comprehensive income (loss)	(29,558,000)	7,588,000
Gain on debt securities	221,000	0
Loss on debt securities	$ 974,000	0
Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than Or Equal To One Year | item	95
Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than One Year | item	88
Number of issuers | item	1
Minimum percentage of equity held	10.00%
Asset Pledged as Collateral
Total	$ 315,836,000	401,861,000
Marketable Equity Securities
Marketable equity securities, at fair value	1,699,000	$ 1,962,000
Sallie Mae Bank securities
Fair value	$ 17,362,000