Earnings Per Share (Schedule of Calculation of Numerator and Denominator in Earnings Per Share) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net (loss) income	$ (45,003,000)	$ (520,000)	$ 1,566,000
Preferred stock dividends	(10,752,000)	(10,752,000)	(10,752,000)
Net (income) attributable to noncontrolling interests	(96,000)	(552,000)	(490,000)
Net earnings allocated to unvested shares	(117,000)	(238,000)	(558,000)
Net loss attributable to vested common shares	$ (55,968,000)	$ (12,062,000)	$ (10,234,000)
Weighted average number of vested common shares outstanding, basic and diluted	13,213,000	13,104,000	13,082,000
Net loss per common share attributable to common shareholders, basic and diluted	$ (4.24)	$ (0.92)	$ (0.78)