EQUITY - Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Weighted Average Remaining Contractual Term (Years)
Outstanding at the end of the year	6 years 10 months 24 days
Exercisable at the end of the year	5 years 3 months 18 days
Stock options
Stock-Based Compensation Plans
Expiration term	10 years
Shares
Outstanding at the beginning of the period (in shares)	357,033
Granted (in shares)	205,800
Exercised (in shares)	0
Cancelled, expired or forfeited (in shares)	(16,239)
Outstanding at the end of the period (in shares)	546,594	357,033
Exercisable at the end of the period (in shares)	283,329
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 49.93
Granted (in dollars per share)	35.30
Cancelled, expired or forfeited (in dollars per share)	44.38
Outstanding at the end of the period (in dollars per share)	44.59	$ 49.93
Exercisable at the end of the period (in dollars per share)	48.52
Additional disclosures
Weighted average grant date fair value (in dollars per share)	$ 9.90	$ 12.30	$ 14.26
Intrinsic value of stock options exercised		$ 100	$ 152
Minimum | Stock options | Non-employee directors
Stock-Based Compensation Plans
Vesting requirement condition, percentage of attendance in regularly scheduled board meetings	75.00%