LOANS AND ALLOWANCE FOR CREDIT LOSSES ON LOANS - Summary of Accounts Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	$ 1,762,696	$ 1,495,839	$ 1,751,459
Current period gross charge-offs
Total	0	0
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	723
2022	2,147
2021	190
2020	3,538
Prior	9,217
Revolving Loans at Amortized Cost Basis	18,323
Total	34,138	38,825	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
Commercial and Industrial | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	723
2022	2,147
2021	190
2020	3,538
Prior	9,027
Revolving Loans at Amortized Cost Basis	18,323
Total	33,948		32,383
Commercial and Industrial | OAEM
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		0
Commercial and Industrial | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	190
Revolving Loans at Amortized Cost Basis	0
Total	190		0
Commercial and Industrial | Doubtful
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		0
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	5,693
2021	4,500
2020	194
Prior	0
Revolving Loans at Amortized Cost Basis	158,988
Total	169,375	136,010	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
Construction | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	5,693
2021	4,500
2020	194
Prior	0
Revolving Loans at Amortized Cost Basis	157,897
Total	168,284		191,266
Construction | OAEM
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		0
Construction | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	1,091
Total	1,091		1,091
Construction | Doubtful
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		0
Real Estate Mortgage | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	14,822
2022	32,507
2021	13,407
2020	7,504
Prior	61,820
Revolving Loans at Amortized Cost Basis	11,023
Total	141,083	132,275	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
Real Estate Mortgage | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	2,540
2022	101,039
2021	39,364
2020	34,950
Prior	200,795
Revolving Loans at Amortized Cost Basis	452
Total	379,140	316,253	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
Real Estate Mortgage | Residential – 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	14,340
2022	122,576
2021	65,675
2020	34,717
Prior	200,096
Revolving Loans at Amortized Cost Basis	4,706
Total	442,110	396,274	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	0
Real Estate Mortgage | Residential – 1 to 4 Family | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	14,340
2022	122,576
2021	65,675
2020	34,717
Prior	200,096
Revolving Loans at Amortized Cost Basis	4,706
Total	442,110
Real Estate Mortgage | Residential – 1 to 4 Family | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0
Real Estate Mortgage | Residential – 1 to 4 Family Investment
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	19,217
2022	146,553
2021	124,391
2020	54,042
Prior	146,576
Revolving Loans at Amortized Cost Basis	0
Total	490,779	383,608	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
Real Estate Mortgage | Residential – 1 to 4 Family Investment | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	19,217
2022	146,553
2021	124,391
2020	54,042
Prior	146,576
Revolving Loans at Amortized Cost Basis	0
Total	490,779
Real Estate Mortgage | Residential – 1 to 4 Family Investment | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0
Real Estate Mortgage | Residential – Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	500
2022	5,312
2021	26,956
2020	14,451
Prior	52,367
Revolving Loans at Amortized Cost Basis	0
Total	99,586	84,970	95,556
Current period gross charge-offs
Total	0	0
Real Estate Mortgage | Pass | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	14,822
2022	32,507
2021	13,407
2020	7,504
Prior	61,420
Revolving Loans at Amortized Cost Basis	11,023
Total	140,683		122,523
Real Estate Mortgage | Pass | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	2,540
2022	101,039
2021	39,364
2020	34,950
Prior	186,456
Revolving Loans at Amortized Cost Basis	452
Total	364,801		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	500
2022	5,312
2021	26,956
2020	14,451
Prior	52,367
Revolving Loans at Amortized Cost Basis	0
Total	99,586		95,556
Real Estate Mortgage | OAEM | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		3,027
Real Estate Mortgage | OAEM | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	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
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		0
Real Estate Mortgage | Substandard | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	400
Revolving Loans at Amortized Cost Basis	0
Total	400		400
Real Estate Mortgage | Substandard | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	14,339
Revolving Loans at Amortized Cost Basis	0
Total	14,339		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
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		0
Real Estate Mortgage | Doubtful | Commercial – Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		0
Real Estate Mortgage | Doubtful | Commercial – Non-owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	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
2022	0
2021	0
2020	0
Prior	0
Revolving Loans at Amortized Cost Basis	0
Total	0		0
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	11
2022	0
2021	0
2020	0
Prior	6,456
Revolving Loans at Amortized Cost Basis	18
Total	6,485	7,624	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
Consumer | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	11
2022	0
2021	0
2020	0
Prior	6,385
Revolving Loans at Amortized Cost Basis	18
Total	6,414
Consumer | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0
2022	0
2021	0
2020	0
Prior	71
Revolving Loans at Amortized Cost Basis	0
Total	$ 71
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