CREDIT FACILITY AND LONG-TERM DEBT CREDIT FACILITY AND LONG-TERM DEBT - Carrying Amount of Debt (Details) - Convertible Debt - Senior Convertible Note - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Sep. 17, 2019
Debt Instrument [Line Items]
Principal amount of the Notes	$ 86,250,000	$ 86,250,000	$ 86,250,000
Unamortized debt discount	(2,216,000)	(37,791,000)
Net carrying amount	$ 84,034,000	$ 48,459,000