SHAREHOLDERS' EQUITY - Stock based compensation plans (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense	$ 200,000
Stock issued (in shares)	37,507	53,461	43,871	61,686
Stock surrendered (in shares)	14,913	21,345	16,801	25,634
Stock surrendered to cover employee withholding taxes			$ 700,000	$ 800,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			0	0
Recognized compensation expense	$ 0	$ 0	$ 0	$ 0
Unrecognized stock-based compensation expense	$ 0		$ 0
Options fully vested / exercisable at end of period (in shares)	170,225		170,225
Exercise price low range (in USD per share)			$ 20.00
Exercise price high range (in USD per share)			$ 27.00
Expiry period (in years)			10 years
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)	255,276		255,276