SEGMENT REPORTING - Reconciliation of Segment Net Income Loss and Assets (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Reportable segments and reconciliation to consolidated results [Abstract]
Interest and dividend income		$ 27,796	$ 18,538	$ 54,026	$ 35,996
Interest expense		9,201	897	15,484	1,678
Net interest income		18,595	17,641	38,542	34,318
Provision for credit losses	[1]	236	(1,744)	513	(2,889)
Net interest income after provision for credit losses		18,359	19,385	38,029	37,207
Other non-interest income		5,447	5,319	10,870	10,982
Legal accruals and settlements			0		0
Other non-interest expenses		15,913	14,342	31,749	29,010
Income (loss) before income tax expense (benefit)		7,893	10,362	17,150	19,179
Income tax expense (benefit)		1,613	2,338	3,600	4,288
Segment net income (loss)		6,280	8,024	13,550	14,891
Assets		2,674,673	2,449,911	2,674,673	2,449,911	$ 2,645,553
Operating Segments | Core Banking
Reportable segments and reconciliation to consolidated results [Abstract]
Interest and dividend income		27,757	18,531	53,960	35,982
Interest expense		9,201	897	15,484	1,678
Net interest income		18,556	17,634	38,476	34,304
Provision for credit losses		236	(1,744)	513	(2,889)
Net interest income after provision for credit losses		18,320	19,378	37,963	37,193
Other non-interest income		2,701	2,442	5,352	5,135
Legal accruals and settlements			0		0
Other non-interest expenses		13,894	12,226	27,590	24,757
Income (loss) before income tax expense (benefit)		7,127	9,594	15,725	17,571
Income tax expense (benefit)		1,476	2,167	3,307	3,933
Segment net income (loss)		5,651	7,427	12,418	13,638
Assets		2,667,404	2,441,375	2,667,404	2,441,375
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 credit losses		0	0	0	0
Net interest income after provision for credit losses		0	0	0	0
Other non-interest income		2,603	2,628	5,183	5,385
Legal accruals and settlements			0		0
Other non-interest expenses		1,699	1,650	3,497	3,465
Income (loss) before income tax expense (benefit)		904	978	1,686	1,920
Income tax expense (benefit)		198	229	375	438
Segment net income (loss)		706	749	1,311	1,482
Assets		2,584	2,723	2,584	2,723
Intersegment Eliminations
Reportable segments and reconciliation to consolidated results [Abstract]
Interest and dividend income		39	7	66	14
Interest expense		0	0	0	0
Net interest income		39	7	66	14
Provision for credit losses		0	0	0	0
Net interest income after provision for credit losses		39	7	66	14
Other non-interest income		143	249	335	462
Legal accruals and settlements			0		0
Other non-interest expenses		320	466	662	788
Income (loss) before income tax expense (benefit)		(138)	(210)	(261)	(312)
Income tax expense (benefit)		(61)	(58)	(82)	(83)
Segment net income (loss)		(77)	(152)	(179)	(229)
Assets		$ 4,685	$ 5,813	$ 4,685	$ 5,813

[1] Effective January 1, 2023, the allowance calculation is based upon Current Expected Credit loss methodology. Prior to January 1, 2023, the allowance calculation was based upon incurred loss methodology. Refer to Note 1 for further discussion.