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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, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Numerator:                      
Net income (loss) from continuing operations $ (1,787,530) $ (1,275,620) $ (1,679,211) $ (1,883,418) $ (3,369,329) $ (3,316,286) $ (1,338,521) $ (1,187,553) $ (6,625,779) $ (9,211,688) $ (10,820,996)
Discontinued operations net of tax 872,064 777,916 738,622 818,273 2,396,981 1,349,351 771,709 1,147,136 3,206,875 5,665,177 3,782,224
Net income (loss)                 (3,418,904) (3,546,511) (7,038,772)
Net loss at subsidiary allocated to noncontrolling interests                 79,496 8,752 75,704
Net income (loss) attributable to common shareholders $ (883,776) $ (481,737) $ (918,275) $ (1,055,620) $ (960,706) $ (1,953,668) $ (549,507) $ (73,878) $ (3,339,408) $ (3,537,759) $ (6,963,068)
Denominator:                      
Weighted-average shares outstanding – basic (in shares)                 15,162,184 15,396,098 15,614,052
Dilutive effect of restricted stock and stock options (in shares)                 0 0 0
Weighted-average shares outstanding – diluted (in shares)                 15,162,184 15,396,098 15,614,052