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NET EARNINGS (LOSS) PER SHARE (Details) - shares		12 Months Ended
NET EARNINGS (LOSS) PER SHARE (Details) - shares	Jul. 10, 2014	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common shares outstanding, basic:
Weighted average common shares outstanding-basic		42,060,996	41,907,597	41,762,893
Common shares outstanding, diluted:
Weighted average common shares outstanding-basic		42,060,996	41,907,597	41,762,893
Weighted-average common shares outstanding, diluted (in shares)		42,588,871	41,907,597	41,762,893
Restricted Stock Units
Anti-dilutive shares (in shares)			298,834	162,096
Stock Options
Anti-dilutive shares (in shares)			837,338	496,148
New Genco Equity Warrants
Anti-dilutive shares (in shares)		3,936,761	3,936,761	3,936,761
New Genco Equity Warrants
Equity warrant term	7 years
Number of shares of new stock in which each warrant or right can be converted	0.10
Stock Options
Common shares outstanding, diluted:
Dilutive effect of sharebased arrangements		313,684
Restricted Stock Units
Common shares outstanding, diluted:
Dilutive effect of sharebased arrangements		214,191