LOSS PER COMMON SHARE - Anti-dilutive securities (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
EARNINGS PER COMMON SHARE
Securities outstanding but excluded from computation of earnings per share	8,336	20,812	20,081
Warrants
EARNINGS PER COMMON SHARE
Securities outstanding but excluded from computation of earnings per share		11,293	11,293
Options
EARNINGS PER COMMON SHARE
Securities outstanding but excluded from computation of earnings per share	5,171	6,581	7,837
Restricted stock units
EARNINGS PER COMMON SHARE
Securities outstanding but excluded from computation of earnings per share	3,165	2,938	951