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FAIR VALUE MEASUREMENTS - Schedule of Significant Unobservable Inputs for Non-recurring Assets (Details) - Level 3 $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Quantitative information about the significant unobservable inputs within Level 3
Loans held for sale	$ 44,631	$ 0
Non-recurring
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated	1,872	4,395
Loans held for sale	44,631	0
Capitalized servicing rights	9,817	10,569
Total	56,320	14,964
Non-recurring | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated	1,872	$ 4,395
Loans held for sale	$ 44,631
Non-recurring | Appraised Value | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Loans held for sale, measurement input	44,631,000
Non-recurring | Minimum | Discounted Cash Flow - Loss Severity | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated, measurement input	1.0000	1.0000
Non-recurring | Minimum | Appraised Value | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated, measurement input	0	0
Non-recurring | Maximum | Discounted Cash Flow - Loss Severity | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated, measurement input	0.0007	0.0008
Non-recurring | Maximum | Appraised Value | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated, measurement input	182,000	3,389,000
Non-recurring | Weighted Average | Discounted Cash Flow - Loss Severity | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated, measurement input	0.6692	0.6700
Non-recurring | Weighted Average | Appraised Value | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated, measurement input	154,000	2,774,000
Non-recurring | Capitalized servicing rights | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights	$ 9,817	$ 10,569
Non-recurring | Capitalized servicing rights | Minimum | Constant Prepayment Rate (CPR) | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.0474	0.0543
Non-recurring | Capitalized servicing rights | Minimum | Discount Rate | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.1047	0.1009
Non-recurring | Capitalized servicing rights | Maximum | Constant Prepayment Rate (CPR) | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.2703	0.1715
Non-recurring | Capitalized servicing rights | Maximum | Discount Rate | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.1358	0.1659
Non-recurring | Capitalized servicing rights | Weighted Average | Constant Prepayment Rate (CPR) | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.1346	0.1231
Non-recurring | Capitalized servicing rights | Weighted Average | Discount Rate | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.1218	0.1382

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