SHAREHOLDERS' EQUITY - Share Buyback (Details) - New share repurchase program - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Oct. 01, 2021	Oct. 01, 2019
Equity, Class of Treasury Stock [Line Items]
Authorized amount under the share repurchase program		$ 0	$ 5,000,000	$ 5,000,000
Treasury stock, shares acquired (in shares)	39,093
Treasury stock acquired, average cost per share (in dollars per share)	$ 15.76
Treasury stock, value acquired, cost method	$ 616,000