Equity Method Investment in Related Party (Schedule of operations and financial condition for tigress) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Revenues	$ 10,344,000	$ 18,924,000
Net income	(973,000)	2,275,000
Assets	1,127,836,000		$ 1,404,235,000
Liabilities	1,075,008,000		1,353,729,000
Stockholders’ Equity	49,863,000		49,263,000
Tigress Holdings L L C [Member]
Revenues	3,399,000	4,052,000
Operating income	689,000	1,710,000
Net income	689,000	$ 1,710,000
Assets	11,316,000		10,793,000
Liabilities	5,925,000		6,096,000
Stockholders’ Equity	$ 5,391,000		$ 4,697,000