SEGMENT REPORTING - Reconciliation of Segment Net Income Loss and Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Reportable segments and reconciliation to consolidated results [Abstract]
Interest and dividend income	$ 18,538	$ 16,945	$ 35,996	$ 33,685
Interest expense	897	866	1,678	1,820
Net interest income	17,641	16,079	34,318	31,865
Provision for loan losses	(1,744)	(150)	(2,889)	(409)
Net interest income after provision for loan losses	19,385	16,229	37,207	32,274
Other non-interest income	5,319	6,492	10,982	12,113
Legal accruals and settlements		(269)
Other non-interest expenses		14,120
Other non-interest expenses	14,342	13,851	29,010	27,204
Income (loss) before income tax expense (benefit)	10,362	8,870	19,179	17,183
Income tax expense (benefit)	2,338	2,075	4,288	3,858
Segment net income (loss)	8,024	6,795	14,891	13,325
Segment assets	2,449,911	2,380,712	2,449,911	2,380,712	$ 2,418,475
Operating Segments | Core Banking
Reportable segments and reconciliation to consolidated results [Abstract]
Interest and dividend income	18,531	16,936	35,982	33,671
Interest expense	897	866	1,678	1,820
Net interest income	17,634	16,070	34,304	31,851
Provision for loan losses	(1,744)	(150)	(2,889)	(409)
Net interest income after provision for loan losses	19,378	16,220	37,193	32,260
Other non-interest income	2,442	3,459	5,135	6,150
Legal accruals and settlements		0
Other non-interest expenses		11,844
Other non-interest expenses	12,226		24,757	23,277
Income (loss) before income tax expense (benefit)	9,594	7,835	17,571	15,133
Income tax expense (benefit)	2,167	1,802	3,933	3,331
Segment net income (loss)	7,427	6,033	13,638	11,802
Segment assets	2,441,375	2,369,856	2,441,375	2,369,856
Operating Segments | WMG
Reportable segments and reconciliation to consolidated results [Abstract]
Interest and dividend income	0	0	0	0
Interest expense	0	0	0	0
Net interest income	0	0	0	0
Provision for loan losses	0	0	0	0
Net interest income after provision for loan losses	0	0	0	0
Other non-interest income	2,628	2,803	5,385	5,481
Legal accruals and settlements		0
Other non-interest expenses		1,619
Other non-interest expenses	1,650		3,465	3,270
Income (loss) before income tax expense (benefit)	978	1,184	1,920	2,211
Income tax expense (benefit)	229	316	438	579
Segment net income (loss)	749	868	1,482	1,632
Segment assets	2,723	3,201	2,723	3,201
Intersegment Eliminations
Reportable segments and reconciliation to consolidated results [Abstract]
Interest and dividend income	7	9	14	14
Interest expense	0	0	0	0
Net interest income	7	9	14	14
Provision for loan losses	0	0	0	0
Net interest income after provision for loan losses	7	9	14	14
Other non-interest income	249	230	462	482
Legal accruals and settlements		(269)
Other non-interest expenses		657
Other non-interest expenses	466		788	657
Income (loss) before income tax expense (benefit)	(210)	(149)	(312)	(161)
Income tax expense (benefit)	(58)	(43)	(83)	(52)
Segment net income (loss)	(152)	(106)	(229)	(109)
Segment assets	$ 5,813	$ 7,655	$ 5,813	$ 7,655