Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,124)		$ (4,006)		$ (2,938)	$ (1,213)
Unrealized (losses) gains on available-for-sale investments:
Unrealized (losses) gains arising during the period	(50)	[1]	52	[1]	130	284
Reclassification adjustment for amounts included in net loss	(2)	[1]	(6)	[1]	64	(19)
Change in fair value of debt attributable to instrument-specific credit risk	(2,843)	[1]	(951)	[1]	7,781	(2,646)
Equity in other comprehensive income of limited liability investment	0		0		0	45
Other comprehensive (loss) income	(2,895)	[1]	(905)	[1]	7,975	(2,336)
Comprehensive (loss) income	(4,019)		(4,911)		5,037	(3,549)
Less: comprehensive income attributable to noncontrolling interests in consolidated subsidiaries	109		203		953	684
Comprehensive (loss) income attributable to common shareholders	$ (4,128)		$ (5,114)		$ 4,084	$ (4,233)

[1] Net of income tax (benefit) expense of $0 and $0 for the three and nine months ended September 30, 2020 and September 30, 2019, respectively..