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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Jul. 31, 2021
Dec. 31, 2020
Tax open years subject to examination [Line Items]            
(Benefit from) provision for income taxes $ (92) $ 165 $ 475 $ 538    
Pre-tax income (loss) 1,402 $ (992) $ 1,644 $ (1,902)    
Effective income tax rate     29.00% (28.00%)    
U.S. Federal statutory rate     21.00%      
Unrecognized tax benefits 360   $ 360     $ 669
Income tax penalties and interest accrued $ 148   $ 148     $ 594
Canada            
Tax open years subject to examination [Line Items]            
Income tax penalties and interest accrued reversal         $ 560