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Earnings Per Share - Computation for Earnings Per Share (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Earnings Per Share [Abstract]        
Net Income $ 24,875,795 $ 11,140,583 $ 56,764,946 $ 22,250,694
Less: Net loss (income) attributable to redeemable noncontrolling interest 751,850 (575,068) (563,960) 2,045,619
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS $ 25,627,645 $ 10,565,515 $ 56,200,986 $ 24,296,313
Weighted average shares outstanding        
Weighted average number of outstanding shares - Basic (in shares) 3,192,535 3,200,957 3,182,065 3,231,452
Weighted average number of outstanding shares - Diluted (in shares) 3,192,535 3,200,957 3,182,065 3,231,452
Earnings per share        
Basic (USD per share) $ 8.03 $ 3.30 $ 17.66 $ 7.52
Diluted (USD per share) $ 8.03 $ 3.30 $ 17.66 $ 7.52