FAIR VALUE - Summary of assets and liabilities measured at fair value on a recurring or nonrecurring, the significant unobservable inputs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value	$ 23,321	$ 0
Impaired loans	3,120	2,564
Level 1
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value		0
Fair Value, Recurring
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value	23,321
Guarantee asset	143	237
Available-for-sale securities, at fair value		55,562
Fair Value, Recurring | Level 1
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value	0
Guarantee asset	0	0
Derivative asset, fair value	0
Available-for-sale securities, at fair value		247
Fair Value, Recurring | Level 2
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value	0
Guarantee asset	0	0
Available-for-sale securities, at fair value		53,202
Fair Value, Recurring | Level 3
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value	23,321
Guarantee asset	143	237
Available-for-sale securities, at fair value		$ 2,113
Fair Value, Recurring | Level 3 | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Guarantee assets, measurement input		3.00%
Fair Value, Recurring | Discount rate
Summary of assets measured on a recurring and nonrecurring basis
Guarantee asset		$ 237
Fair Value, Recurring | Discount rate | Level 3 | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value	23,321
Guarantee asset	$ 143
Guarantee assets, measurement input	5.00%
Fair Value, Recurring | Prepayment rate | Level 3 | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Guarantee assets, measurement input	4.00%	18.00%
Fair Value, Recurring | Minimum | Discount rate | Level 3 | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value, measurement input	4.00%
Fair Value, Recurring | Maximum | Discount rate | Level 3 | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value, measurement input	18.00%
Fair Value, Recurring | Weighted Average | Level 3 | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Guarantee assets, measurement input		3.00%
Fair Value, Recurring | Weighted Average | Discount rate | Level 3 | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Loans held for investment at fair value, measurement input	(8.00%)
Guarantee assets, measurement input	5.00%
Fair Value, Recurring | Weighted Average | Prepayment rate | Level 3 | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Guarantee assets, measurement input	4.00%	(18.00%)
Fair Value, Recurring | IRLC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	$ 229	$ 1,473
Fair Value, Recurring | IRLC | Level 1
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value		0
Fair Value, Recurring | IRLC | Level 2
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	0	0
Fair Value, Recurring | IRLC | Level 3
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	229	1,473
Fair Value, Recurring | IRLC | Pull through
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value		$ 1,473
Fair Value, Recurring | IRLC | Pull through | Level 3 | Best execution model
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	$ 229
Fair Value, Recurring | IRLC | Minimum | Pull through | Level 3 | Best execution model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	0.73	71
Fair Value, Recurring | IRLC | Maximum | Pull through | Level 3 | Best execution model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	1	100
Fair Value, Recurring | IRLC | Weighted Average | Pull through | Level 3 | Best execution model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	(0.91)	88
Fair Value, Recurring | Equity Warrants | Volatility Risk-free interest rate Remaining life | Level 3 | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	$ 825	$ 160
Fair Value, Recurring | Equity Warrants | Minimum | Volatility | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		0.24
Derivative assets, period (in years)		0 years
Fair Value, Recurring | Equity Warrants | Minimum | Volatility | Level 3 | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	0.312
Derivative assets, period (in years)	0 years
Fair Value, Recurring | Equity Warrants | Minimum | Volatility Risk-free interest rate Remaining life | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		0.0030
Fair Value, Recurring | Equity Warrants | Minimum | Volatility Risk-free interest rate Remaining life | Level 3 | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	0.0404
Fair Value, Recurring | Equity Warrants | Maximum | Volatility | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		0.37
Derivative assets, period (in years)		4 years
Fair Value, Recurring | Equity Warrants | Maximum | Volatility | Level 3 | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	0.447
Derivative assets, period (in years)	4 years
Fair Value, Recurring | Equity Warrants | Maximum | Volatility Risk-free interest rate Remaining life | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		0.0110
Fair Value, Recurring | Equity Warrants | Maximum | Volatility Risk-free interest rate Remaining life | Level 3 | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	0.0414
Fair Value, Recurring | Equity Warrants | Weighted Average | Volatility | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		(0.32)
Fair Value, Recurring | Equity Warrants | Weighted Average | Volatility | Level 3 | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	(0.348)
Fair Value, Recurring | Equity Warrants | Weighted Average | Volatility Risk-free interest rate Remaining life | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		(0.0097)
Fair Value, Recurring | Equity Warrants | Weighted Average | Volatility Risk-free interest rate Remaining life | Level 3 | Black-Scholes option pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input	(0.0405)
Fair Value, Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		$ 8,325
Fair Value, Recurring | Corporate bonds | Level 1
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Fair Value, Recurring | Corporate bonds | Level 2
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		6,212
Fair Value, Recurring | Corporate bonds | Level 3
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		$ 2,113
Fair Value, Recurring | Corporate bonds | Discount rate | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale, measurement input		0.07
Fair Value, Recurring | Corporate bonds | Weighted Average | Discount rate | Discounted cash flow
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale, measurement input		(0.07)
Fair Value, Recurring | FSC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	$ 46	$ (74)
Fair Value, Recurring | FSC | Level 2
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	46	(65)
Fair Value, Recurring | FSC | Level 3
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	$ 0	(9)
Fair Value, Recurring | FSC | Market Differential
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value		$ (9)
Fair Value, Recurring | FSC | Minimum | Market Differential | Level 3 | Internal pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		14
Fair Value, Recurring | FSC | Maximum | Market Differential | Level 3 | Internal pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		2
Fair Value, Recurring | FSC | Weighted Average | Market Differential | Level 3 | Internal pricing model
Summary of assets measured on a recurring and nonrecurring basis
Derivative assets, measurement input		6
Fair Value, Nonrecurring | Commercial and Industrial
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans		$ 439
Fair Value, Nonrecurring | Level 1 | Commercial and Industrial
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans		0
Fair Value, Nonrecurring | Level 2 | Commercial and Industrial
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans		0
Fair Value, Nonrecurring | Level 3 | Commercial and Industrial
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans		$ 439
Fair Value, Nonrecurring | Minimum | Management discount for asset/property type | Level 3 | Commercial and Industrial | Sales comparison, Market approach - guideline transaction method
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans, measurement input		17.00%
Fair Value, Nonrecurring | Maximum | Management discount for asset/property type | Level 3 | Commercial and Industrial | Sales comparison, Market approach - guideline transaction method
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans, measurement input		45.00%
Fair Value, Nonrecurring | Weighted Average | Management discount for asset/property type | Level 3 | Commercial and Industrial | Sales comparison, Market approach - guideline transaction method
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans, measurement input		39.00%