Equity Method Investments in Related Parties (Schedule of operations and financial condition for tigress) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Revenues	$ 11,723,000	$ 16,793,000	$ 22,031,000	$ 35,717,000
Net income	711,000	1,429,000	(261,000)	3,704,000
Assets	1,151,034,000		1,151,034,000		$ 1,404,235,000
Liabilities	1,097,696,000		1,097,696,000		1,353,729,000
Stockholders’ Equity	50,574,000		50,574,000		49,263,000
Tigress Holdings L L C [Member]
Revenues	2,333,000	3,269,000	5,732,000	7,321,000
Operating income	134,000	914,000	823,000	2,624,000
Net income	134,000	$ 914,000	823,000	$ 2,624,000
Assets	10,893,000		10,893,000		10,793,000
Liabilities	5,359,000		5,359,000		6,096,000
Stockholders’ Equity	$ 5,534,000		$ 5,534,000		$ 4,697,000