FAIR VALUE - Schedule of Individually Evaluated Collateral Dependent Loans at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans	$ 8,427	$ 1,251
Construction And Development
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans	401
Commercial Real Estate
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans	7,941	1,198
Commercial and Industrial Sector
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans	85
Real Estate [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans		53
Significant Other Unobservable Inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans	8,427	1,251
Significant Other Unobservable Inputs (Level 3) | Construction And Development
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans	401
Significant Other Unobservable Inputs (Level 3) | Commercial Real Estate
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans	7,941	1,198
Significant Other Unobservable Inputs (Level 3) | Commercial and Industrial Sector
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans	$ 85
Significant Other Unobservable Inputs (Level 3) | Real Estate [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total fair value of individually evaluated collateral dependent loans		$ 53