LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Allowance for loan losses by portfolio (Details) - USD ($)		3 Months Ended		12 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		$ 17,183,000	$ 13,732,000	$ 13,732,000
Impact of adopting ASU 2016-13		239,822,000	223,266,000	240,864,000	$ 219,041,000
(Release)/provision for loan losses		(805,000)	210,000
Charge-offs		(17,000)	(97,000)	(300,000)
Recoveries		12,000	40,000
Ending balance		19,843,000	13,885,000	17,183,000
Individually		195,000
Collectively		19,648,000		17,183,000
Individually evaluated		12,259,000		12,137,000
Collectively evaluated		2,435,972,000		2,433,955,000
Loans held for investment measured at fair value				23,321,000
Total loans held for investment		2,469,038,000		2,469,413,000
Cumulative adjustment for day one adoption of ASC 326, net of tax
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13	[1]			(5,319,000)
Cumulative adjustment for day one adoption of ASC 326, net of tax | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				3,470,000
Cash, Securities, and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		1,198,000	1,598,000	1,598,000
(Release)/provision for loan losses		60,000	(158,000)
Ending balance		1,451,000	1,440,000	1,198,000
Collectively		1,451,000		1,198,000
Individually evaluated				4,000
Collectively evaluated		157,264,000		165,555,000
Total loans held for investment		157,264,000		165,559,000
Cash, Securities, and Other | Cumulative adjustment for day one adoption of ASC 326, net of tax | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				193,000
Consumer and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		191,000	266,000	266,000
(Release)/provision for loan losses		(95,000)	74,000
Charge-offs		(17,000)	(97,000)
Recoveries		11,000	40,000
Ending balance		196,000	283,000	191,000
Collectively		196,000		191,000
Individually evaluated				5,000
Collectively evaluated		21,696,000		26,065,000
Loans held for investment measured at fair value				23,321,000
Total loans held for investment		42,503,000		49,391,000
Consumer and Other | Cumulative adjustment for day one adoption of ASC 326, net of tax | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				106,000
Construction and Development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		2,025,000	1,092,000	1,092,000
(Release)/provision for loan losses		(477,000)	(138,000)
Ending balance		6,229,000	954,000	2,025,000
Collectively		6,229,000		2,025,000
Individually evaluated				201,000
Collectively evaluated		281,281,000		285,426,000
Total loans held for investment		281,281,000		285,627,000
Construction and Development | Cumulative adjustment for day one adoption of ASC 326, net of tax | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				4,681,000
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		6,309,000	3,553,000	3,553,000
(Release)/provision for loan losses		320,000	236,000
Ending balance		3,821,000	3,789,000	6,309,000
Collectively		3,821,000		6,309,000
Collectively evaluated		891,639,000		899,722,000
Total loans held for investment		891,639,000		899,722,000
1-4 Family Residential | Cumulative adjustment for day one adoption of ASC 326, net of tax | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				(2,808,000)
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		3,490,000	2,952,000	2,952,000
(Release)/provision for loan losses		(92,000)	(85,000)
Ending balance		2,709,000	2,867,000	3,490,000
Collectively		2,709,000		3,490,000
Collectively evaluated		533,218,000		493,134,000
Total loans held for investment		533,218,000		493,134,000
Non-Owner Occupied CRE | Cumulative adjustment for day one adoption of ASC 326, net of tax | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				(689,000)
Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		1,510,000	1,292,000	1,292,000
(Release)/provision for loan losses		(134,000)	36,000
Ending balance		1,272,000	1,328,000	1,510,000
Collectively		1,272,000		1,510,000
Individually evaluated		1,135,000		1,165,000
Collectively evaluated		220,574,000		213,024,000
Total loans held for investment		221,709,000		214,189,000
Owner Occupied CRE | Cumulative adjustment for day one adoption of ASC 326, net of tax | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				(104,000)
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		2,460,000	2,979,000	2,979,000
(Release)/provision for loan losses		(387,000)	245,000
Ending balance		4,165,000	$ 3,224,000	2,460,000
Individually		195,000
Collectively		3,970,000		2,460,000
Individually evaluated		11,124,000		10,762,000
Collectively evaluated		330,300,000		351,029,000
Total loans held for investment		341,424,000		361,791,000
Commercial and Industrial | Cumulative adjustment for day one adoption of ASC 326, net of tax | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				$ 2,091,000
Loan Held for Investment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Loans held for investment measured at fair value		20,807,000
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Recoveries		$ 1,000

[1] Refer to Note 1 - Organization and Summary of Significant Accounting Policies for further information.