INCOME TAXES - Deferred deferred tax asset (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Allowance for credit losses	$ 8,534	$ 5,308
Compensation related	2,427	3,068
Deferred loan origination fees and loan costs	2,025	1,261
Loan related	1,254	253
Operating lease liabilities	3,454	3,298
Other	29	8
Total deferred tax assets	17,723	13,196
Deferred tax liabilities:
Accumulated depreciation	(1,550)	(1,140)
Operating lease right-to-use assets	(2,790)	(2,714)
Compensation 481(a) adjustment		(238)
Core deposit intangibles	(836)	(997)
Unrealized gain on securities available for sale	(1,801)	(634)
Other	(46)	(41)
Total deferred tax liabilities	(7,023)	(5,764)
Net deferred tax asset	$ 10,700	$ 7,432