FAIR VALUE MEASUREMENTS - Schedule of Quantitative Information about the Significant Unobservable Inputs within Level 3 (Details) $ in Thousands	Dec. 31, 2023 USD ($) uSDPerLoan	Dec. 31, 2022 USD ($) uSDPerLoan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading security	$ 6,142	$ 6,708
Securities available for sale, at fair value	1,022,285	1,423,200
Commitments	45,668	54,241
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities available for sale, at fair value	3,923	4,000
Level 3 | Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading security	6,142	6,708
Loans held for investment	374	605
Total	12,020	13,184
Level 3 | Recurring | Commitments to lend
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments	34	17
Level 3 | Recurring | Forward Commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments	21	8
Level 3 | Recurring | Capitalized Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized Servicing Rights	1,526	1,846
Level 3 | Recurring | Securities Available for Sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities available for sale, at fair value	$ 3,923	$ 4,000
Level 3 | Recurring | Discount Rate | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading Security, significant unobservable input value	0.0419	0.0592
Loans held for investment, Significant Unobservable Input Value	0.2500	0.2500
Level 3 | Recurring | Discount Rate | Discounted Cash Flow | Capitalized Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized Servicing Rights, Significant Unobservable Input Value	0.1108	0.0956
Level 3 | Recurring | Price | Indication from Market Maker | Securities Available for Sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities Available for Sale, Significant Unobservable Input Value	0.9807	1.0000
Level 3 | Recurring | Collateral Value | Discounted Cash Flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for investment, Significant Unobservable Input Value	0.0	0.0
Level 3 | Recurring | Collateral Value | Discounted Cash Flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for investment, Significant Unobservable Input Value	18.3	20.4
Level 3 | Recurring | Closing Ratio | Historical Trend | Commitments to lend
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments, Significant Unobservable Input Value	0.8429	0.8063
Level 3 | Recurring | Closing Ratio | Historical Trend | Forward Commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments, Significant Unobservable Input Value	0.8429	0.8063
Level 3 | Recurring | Origination Costs, per loan | Pricing Model | Commitments to lend
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments, Significant Unobservable Input Value | uSDPerLoan	3,000	2,000
Level 3 | Recurring | Origination Costs, per loan | Pricing Model | Forward Commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments, Significant Unobservable Input Value | uSDPerLoan	3,000	2,000
Level 3 | Recurring | Constant prepayment rate (CPR) | Discounted Cash Flow | Capitalized Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized Servicing Rights, Significant Unobservable Input Value	0.0763	0.1107