LOANS AND ALLOWANCE FOR CREDIT LOSSES ON LOANS - Summary of Accounts Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	$ 1,800,023	$ 1,679,357	$ 1,800,023	$ 1,679,357	$ 1,751,459
Current period gross charge-offs
Total	0	66	0	66
Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					1,732,156
OAEM
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					3,027
Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					16,276
Doubtful
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					0
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	4,435		4,435
2022	2,323		2,323
2021	109		109
2020	3,442		3,442
Prior	7,550		7,550
Revolving Loans at Amortized Cost Basis	14,109		14,109
Total	31,968	29,407	31,968	29,407	32,383
Current period gross charge-offs
2023			0
2022			0
2021			0
2020			0
Prior			0
Revolving Loans at Amortized Cost Basis			0
Total	0	0	0	0
Commercial and Industrial | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	4,435		4,435
2022	1,857		1,857
2021	109		109
2020	3,442		3,442
Prior	7,550		7,550
Revolving Loans at Amortized Cost Basis	14,109		14,109
Total	31,502		31,502		32,383
Commercial and Industrial | OAEM
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Commercial and Industrial | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	466		466
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	466		466		0
Commercial and Industrial | Doubtful
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	324		324
2022	3,338		3,338
2021	4,500		4,500
2020	193		193
Prior	0		0
Revolving Loans at Amortized Cost Basis	142,468		142,468
Total	150,823	194,111	150,823	194,111	192,357
Current period gross charge-offs
2023			0
2022			0
2021			0
2020			0
Prior			0
Revolving Loans at Amortized Cost Basis			0
Total	0	0	0	0
Construction | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	324		324
2022	3,338		3,338
2021	4,500		4,500
2020	193		193
Prior	0		0
Revolving Loans at Amortized Cost Basis	141,377		141,377
Total	149,732		149,732		191,266
Construction | OAEM
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Construction | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	1,091		1,091
Total	1,091		1,091		1,091
Construction | Doubtful
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Real Estate Mortgage | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	19,546		19,546
2022	36,255		36,255
2021	21,678		21,678
2020	7,173		7,173
Prior	56,207		56,207
Revolving Loans at Amortized Cost Basis	2,378		2,378
Total	143,237	130,106	143,237	130,106	125,950
Current period gross charge-offs
2023			0
2022			0
2021			0
2020			0
Prior			0
Revolving Loans at Amortized Cost Basis			0
Total	0	0	0	0
Real Estate Mortgage | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	14,572		14,572
2022	99,540		99,540
2021	41,751		41,751
2020	34,116		34,116
Prior	193,064		193,064
Revolving Loans at Amortized Cost Basis	1,179		1,179
Total	384,222	347,543	384,222	347,543	377,452
Current period gross charge-offs
2023			0
2022			0
2021			0
2020			0
Prior			0
Revolving Loans at Amortized Cost Basis			0
Total	0	0	0	0
Real Estate Mortgage | Residential – 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	46,213		46,213
2022	118,758		118,758
2021	63,059		63,059
2020	33,701		33,701
Prior	195,472		195,472
Revolving Loans at Amortized Cost Basis	3,867		3,867
Total	461,070	432,066	461,070	432,066	444,820
Current period gross charge-offs
2023			0
2022			0
2021			0
2020			0
Prior			0
Revolving Loans at Amortized Cost Basis			0
Total	0	66	0	66
Real Estate Mortgage | Residential – 1 to 4 Family | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	46,213		46,213
2022	118,758		118,758
2021	63,059		63,059
2020	33,701		33,701
Prior	195,472		195,472
Revolving Loans at Amortized Cost Basis	3,867		3,867
Total	461,070		461,070
Real Estate Mortgage | Residential – 1 to 4 Family | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0
Real Estate Mortgage | Residential – 1 to 4 Family Investment
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	63,774		63,774
2022	141,343		141,343
2021	118,955		118,955
2020	51,438		51,438
Prior	124,566		124,566
Revolving Loans at Amortized Cost Basis	0		0
Total	500,076	460,922	500,076	460,922	476,210
Current period gross charge-offs
2023			0
2022			0
2021			0
2020			0
Prior			0
Revolving Loans at Amortized Cost Basis			0
Total	0	0	0	0
Real Estate Mortgage | Residential – 1 to 4 Family Investment | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	63,774		63,774
2022	141,343		141,343
2021	118,955		118,955
2020	51,438		51,438
Prior	124,566		124,566
Revolving Loans at Amortized Cost Basis	0		0
Total	500,076		500,076
Real Estate Mortgage | Residential – 1 to 4 Family Investment | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0
Real Estate Mortgage | Residential – Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	497		497
2022	15,670		15,670
2021	43,669		43,669
2020	12,230		12,230
Prior	50,636		50,636
Revolving Loans at Amortized Cost Basis	0		0
Total	122,702	78,162	122,702	78,162	95,556
Current period gross charge-offs
2023			0
2022			0
2021			0
2020			0
Prior			0
Revolving Loans at Amortized Cost Basis			0
Total	0	0	0	0
Real Estate Mortgage | Pass | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	19,546		19,546
2022	36,255		36,255
2021	21,678		21,678
2020	7,173		7,173
Prior	55,090		55,090
Revolving Loans at Amortized Cost Basis	2,378		2,378
Total	142,120		142,120		122,523
Real Estate Mortgage | Pass | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	14,572		14,572
2022	99,540		99,540
2021	41,751		41,751
2020	34,116		34,116
Prior	175,389		175,389
Revolving Loans at Amortized Cost Basis	1,179		1,179
Total	366,547		366,547		362,899
Real Estate Mortgage | Pass | Residential – 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					444,658
Real Estate Mortgage | Pass | Residential – 1 to 4 Family Investment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					476,210
Real Estate Mortgage | Pass | Residential – Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	497		497
2022	15,670		15,670
2021	43,669		43,669
2020	12,230		12,230
Prior	50,636		50,636
Revolving Loans at Amortized Cost Basis	0		0
Total	122,702		122,702		95,556
Real Estate Mortgage | OAEM | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		3,027
Real Estate Mortgage | OAEM | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Real Estate Mortgage | OAEM | Residential – 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					0
Real Estate Mortgage | OAEM | Residential – 1 to 4 Family Investment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					0
Real Estate Mortgage | OAEM | Residential – Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Real Estate Mortgage | Substandard | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	1,117		1,117
Revolving Loans at Amortized Cost Basis	0		0
Total	1,117		1,117		400
Real Estate Mortgage | Substandard | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	17,675		17,675
Revolving Loans at Amortized Cost Basis	0		0
Total	17,675		17,675		14,553
Real Estate Mortgage | Substandard | Residential – 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					162
Real Estate Mortgage | Substandard | Residential – 1 to 4 Family Investment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					0
Real Estate Mortgage | Substandard | Residential – Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Real Estate Mortgage | Doubtful | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Real Estate Mortgage | Doubtful | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Real Estate Mortgage | Doubtful | Residential – 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					0
Real Estate Mortgage | Doubtful | Residential – 1 to 4 Family Investment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					0
Real Estate Mortgage | Doubtful | Residential – Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	0		0		0
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	5,909		5,909
Revolving Loans at Amortized Cost Basis	16		16
Total	5,925	7,040	5,925	7,040	6,731
Current period gross charge-offs
2023			0
2022			0
2021			0
2020			0
Prior			0
Revolving Loans at Amortized Cost Basis			0
Total	0	$ 0	0	$ 0
Consumer | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	5,909		5,909
Revolving Loans at Amortized Cost Basis	16		16
Total	5,925		5,925
Consumer | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
Prior	0		0
Revolving Loans at Amortized Cost Basis	0		0
Total	$ 0		$ 0
Consumer | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					6,661
Consumer | OAEM
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					0
Consumer | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					70
Consumer | Doubtful
Financing Receivable, Allowance for Credit Loss [Line Items]
Total					$ 0