FAIR VALUE - Significant unobservable inputs (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) $ / loan	Dec. 31, 2022 USD ($) $ / loan
Fair value of collateral | Estimated cost of disposal/market adjustment
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Other real estate owned, valuation technique [Extensible List]	Fair value of collateral	Fair value of collateral
Other real estate owned, measurement input [Extensible List]	us-gaap:MeasurementInputCostToSellMember	us-gaap:MeasurementInputCostToSellMember
Discounted cash flow | Embedded servicing value
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Commitments to originate real estate loans for sale, Valuation Technique [Extensible List]	Discounted cash flow	Discounted cash flow
Commitments to originate real estate loans for sale, Measurement Input [Extensible List]	Embedded servicing value	Embedded servicing value
Discounted cash flow | Weighted average constant prepayment rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, Valuation Technique [Extensible List]	Discounted cash flow	Discounted cash flow
Mortgage servicing rights, Measurement Input [Extensible List]	Weighted average constant prepayment rate	Weighted average constant prepayment rate
Discounted cash flow | Weighted average discount rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, Measurement Input [Extensible List]	Weighted average discount rate	Weighted average discount rate
Contingent consideration, Valuation Technique [Extensible List]	Discounted cash flow	Discounted cash flow
Contingent consideration, Measurement Input [Extensible List]	Weighted average discount rate	Weighted average discount rate
Discounted cash flow | Adequate compensation
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, Measurement Input [Extensible List]	Adequate compensation	Adequate compensation
Discounted cash flow | Probability adjusted level of retained revenue
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Contingent consideration, Measurement Input [Extensible List]	Probability adjusted level of retained revenue	Probability adjusted level of retained revenue
Minimum | Fair value of collateral | Estimated cost of disposal/market adjustment
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Other real estate owned, measurement input	0.090
Maximum | Fair value of collateral | Estimated cost of disposal/market adjustment
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Other real estate owned, measurement input	0.751
Level 3 | Fair value of collateral | Estimated cost of disposal/market adjustment
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Other real estate owned	$ 623	$ 503
Level 3 | Discounted cash flow | Embedded servicing value
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Commitments to originate real estate loans for sale	$ 18	$ 5
Commitments to originate real estate loans for sale, measurement input	0.010	0.010
Mortgage servicing rights	$ 608	$ 1,169
Level 3 | Discounted cash flow | Weighted average discount rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Contingent consideration	$ (3,800)	$ (2,800)
Level 3 | Discounted cash flow | Adequate compensation
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, measurement input | $ / loan	7	7
Level 3 | Minimum | Fair value of collateral | Estimated cost of disposal/market adjustment
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Other real estate owned, measurement input	0.090	0.090
Level 3 | Minimum | Discounted cash flow | Weighted average constant prepayment rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, measurement input	0.048	0.029
Level 3 | Minimum | Discounted cash flow | Weighted average discount rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, measurement input	0.046	0.046
Contingent consideration, measurement input	0.067	0.059
Level 3 | Minimum | Discounted cash flow | Probability adjusted level of retained revenue
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Contingent consideration, measurement input 2	$ 3,300	$ 3,100
Level 3 | Maximum | Fair value of collateral | Estimated cost of disposal/market adjustment
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Other real estate owned, measurement input	0.751	0.728
Level 3 | Maximum | Discounted cash flow | Weighted average constant prepayment rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, measurement input	0.050	0.033
Level 3 | Maximum | Discounted cash flow | Weighted average discount rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, measurement input	0.048	0.049
Contingent consideration, measurement input	0.069	0.062
Level 3 | Maximum | Discounted cash flow | Probability adjusted level of retained revenue
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Contingent consideration, measurement input 2	$ 4,700	$ 5,100
Level 3 | Weighted Average | Fair value of collateral | Estimated cost of disposal/market adjustment
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Other real estate owned, measurement input	0.473	0.357
Level 3 | Weighted Average | Discounted cash flow | Weighted average constant prepayment rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, measurement input	0.048	0.029
Level 3 | Weighted Average | Discounted cash flow | Weighted average discount rate
Significant Unobservable Inputs used in determination of Fair Value of Assets Classified as Level 3
Mortgage servicing rights, measurement input	0.048	0.049
Contingent consideration, measurement input	0.069	0.061