FAIR VALUE MEASURES - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement of Level 3 Assets and Liabilities (Details) - Level 3 $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Fair Value, Measurements, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale, at fair value	$ 1,155	$ 1,380
Fair Value, Measurements, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral-dependent loans	$ 31,972	44,181
Mortgage servicing rights		$ 206,944
Discounted cash flows | Probability of Default | Fair Value, Measurements, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale, measurement input	0.121	0.08
Discounted cash flows | Probability of Default | Fair Value, Measurements, Recurring | Weighted Average Daily Balance
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale, measurement input	0.121	0.08
Discounted cash flows | Loss Given Default | Fair Value, Measurements, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale, measurement input	0.41
Discounted cash flows | Loss Given Default | Fair Value, Measurements, Recurring | Weighted Average Daily Balance
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale, measurement input	0.41
Discounted cash flows | Discount rate | Fair Value, Measurements, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale, measurement input
Discounted cash flows | Discount rate | Fair Value, Measurements, Recurring | Weighted Average Daily Balance
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale, measurement input
Third-party appraisals and discounted cash flows | Collateral discounts and discount rates | Fair Value, Measurements, Nonrecurring | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral-dependent loans, measurement input	0	0
Third-party appraisals and discounted cash flows | Collateral discounts and discount rates | Fair Value, Measurements, Nonrecurring | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral-dependent loans, measurement input	0.48	0.50
Third-party appraisals and discounted cash flows | Collateral discounts and discount rates | Fair Value, Measurements, Nonrecurring | Weighted Average Daily Balance
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral-dependent loans, measurement input	0.27	0.39
Discounted cash flows | Discount rate | Fair Value, Measurements, Nonrecurring | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights measurement input		0.09
Discounted cash flows | Discount rate | Fair Value, Measurements, Nonrecurring | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights measurement input		0.10
Discounted cash flows | Discount rate | Fair Value, Measurements, Nonrecurring | Weighted Average Daily Balance
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights measurement input		0.09
Discounted cash flows | Prepayment speed | Fair Value, Measurements, Nonrecurring | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights measurement input		0.10
Discounted cash flows | Prepayment speed | Fair Value, Measurements, Nonrecurring | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights measurement input		0.40
Discounted cash flows | Prepayment speed | Fair Value, Measurements, Nonrecurring | Weighted Average Daily Balance
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights measurement input		0.13