SECURITIES - Securities From Issuers In Excess Of Ten Percent Of Consolidated Stockholders' Equity (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Debt securities available-for-sale, at fair value	$ 407,770	$ 390,288
Stockholders' Equity | Securities Holdings Concentration Risk | Sallie Mae Bank
Debt Securities, Available-for-Sale [Line Items]
Debt securities available-for-sale, at fair value	24,044	26,187
Stockholders' Equity | Securities Holdings Concentration Risk | Velocity Commercial Capital
Debt Securities, Available-for-Sale [Line Items]
Debt securities available-for-sale, at fair value	20,249	23,334
Stockholders' Equity | Securities Holdings Concentration Risk | Nelnet Student Loan Trust
Debt Securities, Available-for-Sale [Line Items]
Debt securities available-for-sale, at fair value	$ 13,628	15,008
Stockholders' Equity | Securities Holdings Concentration Risk | Navient Student Loan Trust
Debt Securities, Available-for-Sale [Line Items]
Debt securities available-for-sale, at fair value		$ 10,726