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Earnings Per Share (Schedule of Calculation of Numerator and Denominator in Earnings Per Share) (Details) - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Earnings Per Share [Abstract]    
Net income (loss) from continuing operations $ 14,000 $ (6,815,000)
Preferred stock dividends (2,688,000) (2,688,000)
Net loss attributable to noncontrolling interests   42,000
Net loss allocated to unvested shares   (23,000)
Loss from continuing operations, net of noncontrolling interest, attributable to vested common shares (2,674,000) (9,484,000)
Income from discontinued operations, net of noncontrolling interests, attributable to vested common shares   (5,716,000)
Net loss attributable to vested common shares $ (2,674,000) $ (3,768,000)
Weighted average number of vested common shares outstanding, basic 13,718,000 13,285,000
Weighted average number of vested common shares outstanding, diluted 13,718,000 13,285,000
Continuing operations, basic per share $ (0.19) $ (0.71)
Continuing operations, diluted per share (0.19) (0.71)
Discontinued operations, basic per share   0.43
Discontinued operations, diluted per share   0.43
Net (loss) income per common share attributable to common shareholders, basic (0.19) (0.28)
Net (loss) income per common share attributable to common shareholders, diluted $ (0.19) $ (0.28)