Stockholders' Equity (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	20,000,000	20,000,000	20,000,000
Preferred Stock, Par Value Per Share	$ 1.00	$ 1.00	$ 1.00
Preferred Stock, Liquidation Preference Per Share	$ 1,272.78	$ 1,272.78
Common Class A [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized	70,000,000	70,000,000	70,000,000
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10	$ 0.10
Common Stock, Shares, Issued	11,320,689	11,320,689	8,347,427
Stock Issued During Period, Shares, New Issues	2,537,500
Common Class B [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized	30,000,000	30,000,000	30,000,000
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10	$ 0.10
Common Stock, Shares, Issued	719,200	719,200	1,117,462
Preferred Series B [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued	104,574	104,574	104,574
Preferred stock	$ 4,600,000	$ 4,600,000	$ 4,600,000
Preferred Stock, Dividend Rate, Percentage		7.50%
Preferred Stock, Liquidation Preference, Value	$ 133,100,000	$ 133,100,000	$ 127,200,000