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Income Taxes - Reconciliation of Income Tax Expense to Federal Statutory Rate (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Summary of reconciliation of income tax expense      
Income tax computed at statutory rate $ 21,344,264 $ 10,945,831 $ 16,472,987
Expense (benefit) attributable to redeemable noncontrolling interests (291,675) 104,035 (1,007,012)
State and local income taxes, net of federal benefit 5,112,975 1,875,882 2,835,215
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount 909,387 632,705 625,009
Change in uncertain state and local tax positions, net of federal benefit 0 0 (47,197)
Excess tax deficit (benefit) on vesting of restricted stock 134,302 612,930 (70,878)
Income tax benefit from dividends paid on restricted stock (962,139) (455,283) (431,192)
Interest and penalties 22,490 1,460 101,010
Other (219,789) 240,308 210,532
Provision for income taxes $ 26,049,815 $ 13,957,868 $ 18,688,474