SHAREHOLDERS EQUITY - Common Stock (Details) - $ / shares		12 Months Ended		24 Months Ended
	Jun. 14, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Nov. 03, 2020
Class of Stock [Line Items]
Common stock par value		$ 0	$ 0	$ 0
Issuance of common stock for Teton Acquisition (in shares)				0
2019 Repurchase Plan
Class of Stock [Line Items]
Number of shares repurchased			22,679
2020 Repurchase Plan
Class of Stock [Line Items]
Number of shares repurchased			426
Shares repurchased average price per share			$ 17.30
Common Stock
Class of Stock [Line Items]
Common stock par value		$ 0		$ 0
Number of votes per each share		one
Effective term of program	1 year
Common Stock | 2019 Repurchase Plan
Class of Stock [Line Items]
Authorized share repurchase	300,000
Shares repurchased average price per share			$ 16.50
Common Stock | 2020 Repurchase Plan
Class of Stock [Line Items]
Common stock par value					$ 0
Authorized share repurchase					400,000
Common Stock | Teton Financial Services
Class of Stock [Line Items]
Common stock issued as part of merger		1,337,791