ACQUISITIONS - Acquired loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Total loans held for investment	$ 2,476,135	$ 1,954,168
Cash, Securities and Other
Business Acquisition [Line Items]
Total loans held for investment	165,670	261,190
Construction and Development
Business Acquisition [Line Items]
Total loans held for investment	288,497	178,716
1-4 Family Residential
Business Acquisition [Line Items]
Total loans held for investment	898,154	580,872
Non-Owner Occupied CRE
Business Acquisition [Line Items]
Total loans held for investment	496,776	482,622
Owner Occupied CRE
Business Acquisition [Line Items]
Total loans held for investment	216,056	212,426
Commercial and Industrial
Business Acquisition [Line Items]
Total loans held for investment	361,028	203,584
PPP Loans
Business Acquisition [Line Items]
Total loans held for investment	$ 7,100	46,800
Teton Financial Services
Business Acquisition [Line Items]
Loans, net		251,418
Teton Financial Services \| Provisional Estimate
Business Acquisition [Line Items]
Total loans		256,257
Acquisition fair value adjustments		(3,982)
Loans, net		252,275
Teton Financial Services \| Cash, Securities and Other \| Provisional Estimate
Business Acquisition [Line Items]
Total loans		20,080
Teton Financial Services \| Construction and Development \| Provisional Estimate
Business Acquisition [Line Items]
Total loans		33,977
Teton Financial Services \| 1-4 Family Residential \| Provisional Estimate
Business Acquisition [Line Items]
Total loans		70,348
Teton Financial Services \| Non-Owner Occupied CRE \| Provisional Estimate
Business Acquisition [Line Items]
Total loans		43,162
Teton Financial Services \| Owner Occupied CRE \| Provisional Estimate
Business Acquisition [Line Items]
Total loans		33,000
Teton Financial Services \| Commercial and Industrial \| Provisional Estimate
Business Acquisition [Line Items]
Total loans		55,690
Teton Financial Services \| PPP Loans
Business Acquisition [Line Items]
Total loans held for investment		$ 6,700

Amount of fair value adjustment recognized on business combination.

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- Definition

The amount of loans receivables recognized as of the acquisition date.

+ References

No definition available.

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+ References

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- Definition

The amount of financial assets (as defined) recognized as of the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-URI https://asc.fasb.org/topic&trid=2134543

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-Name Accounting Standards Codification
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- Definition

Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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