Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Treasury Shares - Additional Information (Details)

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Treasury Shares - Additional Information (Details) - USD ($)
12 Months Ended
Apr. 20, 2021
Jan. 18, 2021
Feb. 28, 2022
Feb. 28, 2021
Treasury Shares [Abstract]        
Amount of share repurchase program authorized   $ 50,000,000    
Share repurchase program commenced date   Feb. 12, 2021    
Amount of repurchasing of ordinary shares $ 49,900,000      
Number of repurchasing of ordinary shares 6,671,788      
Commission costs for share repurchase program $ 133,000      
Average weighted number of treasury shares     6,426,178 33,895