SUBSEQUENT EVENT (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	May 06, 2022	Sep. 30, 2015	Dec. 31, 2017	Feb. 01, 2021
Subsequent Event [Line Items]
Fixed-to-floating rate subordinated debentures		$ 80,000
Subordinated Debentures
Subsequent Event [Line Items]
Fixed-to-floating rate subordinated debentures			$ 115,000	$ 115,000
Fixed annual interest rate			4.50%	4.50%
Basis points			2.66%
Callable Notes After Five Years | Subordinated Debentures
Subsequent Event [Line Items]
Fixed-to-floating rate subordinated debentures		$ 40,000
Debt Instrument, Term		5 years
Fixed annual interest rate		0.0525%
Basis points		3.60%
Callable Notes After Ten Years | Subordinated Debentures
Subsequent Event [Line Items]
Fixed-to-floating rate subordinated debentures		$ 40,000
Debt Instrument, Term		10 years
Fixed annual interest rate		0.0575%
Basis points		3.45%
Subsequent event
Subsequent Event [Line Items]
Write-off of debt issuance costs	$ 750
Subsequent event | Fixed to Floating Rate Subordinated Notes Due 2032
Subsequent Event [Line Items]
Fixed-to-floating rate subordinated debentures	$ 160,000
Debt Instrument, Term	5 years
Fixed annual interest rate	5.00%
Subsequent event | Fixed to Floating Rate Subordinated Notes Due 2032 | Three-Month Term SOFR
Subsequent Event [Line Items]
Basis points	218.00%
Subsequent event | Callable Notes After Five Years | Subordinated Debentures
Subsequent Event [Line Items]
Fixed-to-floating rate subordinated debentures	$ 115,000
Fixed annual interest rate	4.50%
Subsequent event | Callable Notes After Ten Years | Subordinated Debentures
Subsequent Event [Line Items]
Fixed-to-floating rate subordinated debentures	$ 40,000
Fixed annual interest rate	5.25%