Note 4 - CMBS Trusts (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule of Recognized Trusts Assets and Liabilities [Table Text Block]

Trust's Assets	September 30, 2021			December 31, 2020
Mortgage loans held in variable interest entities, at fair value	$	7,085,361		$	5,007,515
Accrued interest receivable		1,775			1,063
Trust's Liabilities
Bonds payable held in variable interest entities, at fair value		(6,652,704	)		(4,731,429	)
Accrued interest payable		(1,275	)		(794	)

Schedule of Change in Net Assets Related to Consolidated CMBS Variable Interest Entities [Table Text Block]

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2021		2020		2021		2020
Net interest earned	$	7,819	$	5,017	$	19,943	$	10,024
Unrealized gain (loss)		12,421		3,903		28,982		(11,231	)
Change in net assets related to consolidated CMBS variable interest entities	$	20,240	$	8,920	$	48,925	$	(1,207	)

Impaired Financing Receivables [Table Text Block]

Geography	September 30, 2021			December 31, 2020
Texas		16.38	%		15.02	%
Florida		14.38	%		16.25	%
Arizona		8.94	%		11.80	%
California		7.31	%		8.25	%
Georgia		6.67	%		7.05	%
Washington		6.66	%		5.76	%
New Jersey		4.76	%		4.14	%
Nevada		3.60	%		4.12	%
Pennsylvania		*			3.30	%
Colorado		4.18	%		2.26	%
Connecticut		3.10	%		*
North Carolina		2.91	%		1.98	%
New York		2.66	%		3.00	%
Ohio		1.77	%		2.00	%
Virginia		1.74	%		2.09	%
Indiana		1.72	%		2.42	%
South Carolina		1.59	%		1.08	%
Utah		*			1.33	%
Maryland		1.59	%		1.32	%
Missouri		1.29	%		1.20	%
Tennessee		1.21	%		1.45	%
Other (19 and 15 states each at <1%)		7.54	%		4.21	%
		100.00	%		100.00	%

Collateral Property Type	September 30, 2021			December 31, 2020
Multifamily		98.26	%		98.12	%
Manufactured Housing		1.74	%		1.88	%
		100.00	%		100.00	%