CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Preferred Stock, Par Value Per Share	$ 1.00	$ 1.00
Preferred Stock, Shares Authorized	20,000,000	20,000,000
Accumulated Depreciation, Property, Plant, and Equipment	$ 2,400,000	$ 2,200,000
Preferred Series B [Member]
Preferred Stock, Dividend Rate, Percentage	7.50%
Preferred Stock, Shares Issued	104,574	104,574
Preferred Stock, Liquidation Preference, Value	$ 125,200,000	$ 119,300,000
Common Class A [Member]
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Common Stock, Shares Authorized	70,000,000	70,000,000
Common Stock, Shares, Issued	8,783,189	8,347,427
Common Class B [Member]
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Common Stock, Shares Authorized	30,000,000	30,000,000
Common Stock, Shares, Issued	719,200	1,117,462