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EARNINGS PER SHARE - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Treasury stock repurchased (in shares) 341,522        
Value of treasury stock repurchased   $ 5,600 $ 5,566    
Stock repurchase program, decrease in weighted average shares outstanding (in shares)     43,098    
Stock options          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Securities excluded from computation of diluted loss per share (in shares)     400,000 700,000 500,000
RSUs          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Securities excluded from computation of diluted loss per share (in shares)     35,200 10,900 19,000