Note 5 - Variable Interest Entities - Schedule of Variable Interest Entities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 12,642	$ 14,374
Accrued investment income	1,013	757
Total Assets	475,634	452,474
Liabilities:
Accrued expenses and other liabilities	47,622	43,951
Notes payable	205,025	192,057
Total Liabilities	460,880	433,811
Total Assets	475,634	452,474
Equity	8,257	12,159	$ 13,954
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Assets
Limited liability investments	1,514	2,940
Total Assets	283,432	325,215
Liabilities:
Total Liabilities	299,340	307,464
Limited liability investments	1,514	2,940
Investments in non-consolidated VIEs, Maximum Loss Exposure	$ 1,514	$ 2,940
Investments in non-consolidated VIEs, percent	100.00%	100.00%
Total Assets	$ 283,432	$ 325,215
Equity	(15,908)	17,751
Net income	18,647	27,419
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Real Estate Investment [Member]
Assets
Limited liability investments	628	1,610
Liabilities:
Limited liability investments	$ 628	$ 1,610
Investments in non-consolidated VIEs, percent	41.50%	54.80%
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Non-real Estate Investment [Member]
Assets
Limited liability investments	$ 886	$ 1,330
Liabilities:
Limited liability investments	$ 886	$ 1,330
Investments in non-consolidated VIEs, percent	58.50%	45.20%
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Limited liability investments	$ 18,826	$ 32,811
Cash and cash equivalents	944	538
Accrued investment income	716	454
Total Assets	20,486	33,803
Liabilities:
Accrued expenses and other liabilities	250	352
Notes payable	0	9,000
Total Liabilities	250	9,352
Limited liability investments	18,826	32,811
Total Assets	$ 20,486	$ 33,803