ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration of Credit Risk (Details) $ in Thousands		12 Months Ended
	Nov. 13, 2020 USD ($)	Dec. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($) security
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Contingent consideration asset with an initial fair value	$ 3,100
Business Combination Period Of Quarterly Payments	3 years
Number Of Securities Determined To Be Other Than Temporarily Impaired | security		0	0
Merger related expenses		$ 6,473	$ 5,035
Impairment Of Correspondent Bank Stock		0	0
Performance based incentive fees		$ 0	$ 0
Collateral concentration risk | Loan portfolio | Real estate
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Concentration risk (as a percent)		76.10%	66.90%
Teton Financial Services
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Total assets acquired		$ 425,500