STOCKHOLDERS' EQUITY - Non-qualified Stock Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Options
Beginning balance (in shares)	2,751	5,087
Options granted (in shares)	0	250
Options exercised (in shares)	0	0
Options forfeited or expires (in shares)	(200)	(2,586)
Ending balance (in shares)	2,551	2,751	5,087
Weighted Average Exercise Price
Options outstanding, Weighted average exercise price, beginning balance (in dollars per share)	$ 79.76	$ 78.10
Options granted, Weighted average exercise price (in dollars per share)	0	61.40
Options exercised Weighted average exercise price (in dollars per share)	0
Options forfeited or expires, Weighted average exercise price (in dollars per share)	81.60	74.72
Options outstanding, Weighted average exercise price, ending balance (in dollars per share)	$ 79.62	$ 79.76	$ 78.10
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options outstanding, Weighted-average remaining contractual life	8 years 8 months 12 days	9 years 7 months 6 days	9 years 7 months 6 days
Options vested/exercisable (in shares)	1,875
Options vested/exercisable, Weighted average exercise price (in dollars per share)	$ 79.92
Options vested/exercisable, Weighted-average remaining contractual life	7 years 8 months 12 days
Options expected to vest (in shares)	676
Options expected to vest, Weighted average exercise price (in dollars per share)	$ 78.79
Options expected to vest, Weighted-average remaining contractual life	7 years 8 months 12 days