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Earnings (Loss) Per Share (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Numerator:                
Net income (loss) from continuing operations $ (1,583,480)     $ (1,275,620)     $ (1,209,545) $ (4,838,249)
Discontinued operations             1,491,004 2,334,811
Net income (loss) (1,086,693) $ 1,223,491 $ 144,661 (497,704) $ (940,589) $ (1,065,145) 281,459 (2,503,438)
Net (income) loss at subsidiary attributable to noncontrolling interests 31,415     15,967     58,651 47,806
Net income (loss) attributable to common shareholders $ (1,055,278)     $ (481,737)     $ 340,110 $ (2,455,632)
Denominator:                
Weighted-average shares outstanding – basic (in shares) 14,880,887     15,134,583     14,939,919 15,206,179
Dilutive effect of other securities (in shares) 0     0     199,985 0
Weighted-average shares outstanding – diluted (in shares) 14,880,887     15,134,583     15,139,904 15,206,179