LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Allowance for loan losses by portfolio (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, prior to the adoption of ASU 2016-13		$ 17,183	[1]	$ 13,732
Impact of adopting ASU 2016-13		242,738		240,864	$ 219,041
Provision (release) for credit losses		12,077		3,682
Charge-offs		(8,838)		(334)
Recoveries		39		103
Ending balance	[1]	23,931		17,183
Collectively				17,183
Individually evaluated				12,203
Collectively evaluated				2,440,517
Loans held for investment measured at fair value				23,415
Financing receivable loan		2,530,915		2,469,413
Cumulative change in accounting principle
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13	[2]			(5,319)
Cumulative change in accounting principle | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				3,470
Previously Reported
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing receivable loan				2,476,135
Cash, Securities, and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, prior to the adoption of ASU 2016-13		1,198		1,598
Provision (release) for credit losses		(430)		(399)
Charge-offs		0		(1)
Ending balance		961		1,198
Collectively				1,198
Individually evaluated				4
Collectively evaluated				165,666
Financing receivable loan		139,947		165,559
Cash, Securities, and Other | Cumulative change in accounting principle | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				193
Cash, Securities, and Other | Previously Reported
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing receivable loan				165,670
Consumer and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, prior to the adoption of ASU 2016-13		191		266
Provision (release) for credit losses		(94)		84
Charge-offs		(101)		(262)
Recoveries		22		103
Ending balance		124		191
Collectively				191
Collectively evaluated				26,539
Loans held for investment measured at fair value				23,415
Financing receivable loan		40,754		49,391
Consumer and Other | Cumulative change in accounting principle | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				106
Consumer and Other | Previously Reported
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing receivable loan				49,954
Construction and Development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, prior to the adoption of ASU 2016-13		2,025		1,092
Provision (release) for credit losses		1,239		933
Charge-offs		0
Ending balance		7,945		2,025
Collectively				2,025
Individually evaluated				201
Collectively evaluated				288,296
Financing receivable loan		345,516		285,627
Construction and Development | Cumulative change in accounting principle | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				4,681
Construction and Development | Previously Reported
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing receivable loan				288,497
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, prior to the adoption of ASU 2016-13		6,309		3,553
Provision (release) for credit losses		856		2,756
Charge-offs		0
Recoveries		13
Ending balance		4,370		6,309
Collectively				6,309
1-4 Family Residential | Cumulative change in accounting principle | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				(2,808)
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, prior to the adoption of ASU 2016-13		3,490		2,952
Provision (release) for credit losses		(476)		538
Charge-offs		0
Ending balance		2,325		3,490
Collectively				3,490
Collectively evaluated				496,776
Financing receivable loan		543,692		493,134
Non-Owner Occupied CRE | Cumulative change in accounting principle | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				(689)
Non-Owner Occupied CRE | Previously Reported
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing receivable loan				496,776
Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, prior to the adoption of ASU 2016-13		1,510		1,292
Provision (release) for credit losses		(372)		218
Charge-offs		0
Ending balance		1,034		1,510
Collectively				1,510
Individually evaluated				1,165
Collectively evaluated				214,891
Financing receivable loan		195,861		214,189
Owner Occupied CRE | Cumulative change in accounting principle | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				(104)
Owner Occupied CRE | Previously Reported
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing receivable loan				216,056
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, prior to the adoption of ASU 2016-13		2,460		2,979
Provision (release) for credit losses		11,354		(448)
Charge-offs		(8,737)		(71)
Recoveries		4
Ending balance		7,172		2,460
Collectively				2,460
Individually evaluated				10,833
Collectively evaluated				350,195
Financing receivable loan		337,180		361,791
Commercial and Industrial | Cumulative change in accounting principle | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting ASU 2016-13				2,091
Commercial and Industrial | Previously Reported
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing receivable loan				361,028
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Collectively evaluated				898,154
Financing receivable loan		$ 927,965		899,722
1-4 Family Residential | Previously Reported
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing receivable loan				$ 898,154

[1] Allowance for credit loss amounts for periods prior to the ASC 326 adoption date of January 1, 2023 are reported in accordance with previously applicable GAAP

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