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EARNINGS PER COMMON SHARE (Tables)
6 Months Ended
Jun. 30, 2021
Net income (loss) per share:  
Reconciliation of number of shares in earnings per share calculation
                    
   Three Months Ended   Six Months Ended 
   June 30,   June 30, 
   2021   2020   2021   2020 
Weighted average common shares outstanding - basic   12,389    12,492    12,389    12,601 
Diluted effect of common stock equivalents   55        50     
Weighted average common shares outstanding - diluted   12,444    12,492    12,439    12,601