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EARNINGS PER COMMON SHARE - Additional Information (Details) - shares
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Antidilutive Stock Options    
Earnings Per Share Disclosure [Line Items]    
Stock options and warrants with an exercise price greater than the average market price of the common shares not included in the computation of net income per diluted share 0 0