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Earnings (Loss) Per Share (Schedule of Computation of Numerator and Denominator in Earnings Per Share) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Numerator:                      
Net income (loss) from continuing operations $ (4,387,576) $ (1,583,480) $ 724,684 $ (350,749) $ (1,787,530) $ (1,275,620) $ (1,679,211) $ (1,883,418) $ (5,597,121) $ (6,625,779) $ (9,211,688)
Discontinued operations net of tax 503,318 496,787 498,807 495,410 872,064 777,916 738,622 818,273 1,994,322 3,206,875 5,665,177
Net income (loss)                 (3,602,799) (3,418,904) (3,546,511)
Net loss at subsidiary allocated to noncontrolling interests                 95,212 79,496 8,752
Net income (loss) attributable to common shareholders $ (3,847,697) $ (1,055,278) $ 1,228,560 $ 166,828 $ (883,776) $ (481,737) $ (918,275) $ (1,055,620) $ (3,507,587) $ (3,339,408) $ (3,537,759)
Denominator:                      
Weighted-average shares outstanding – basic (in shares)                 14,904,834 15,162,184 15,396,098
Dilutive effect of restricted stock and stock options (in shares)                 0 0 0
Weighted-average shares outstanding – diluted (in shares)                 14,904,834 15,162,184 15,396,098