CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 2,882	$ 18,340
Bond related changes:
Net unrealized gains (losses)	406	(3,347)
Reclassification of fair value gains on sold or redeemed bonds into the Consolidated Statements of Operations	(3,571)	0
Reclassification of credit-related gains to the Consolidated Statements of Operations related to bond investments assessed as other-than-temporary-impairment ("OTTI")		(135)
Reinstatement of fair value gains related to bond investments due to deconsolidation of consolidated property partnerships		9,415
Net change in other comprehensive (loss) income due to bonds	(3,165)	5,933
Income tax expense		(256)
Foreign currency translation adjustment	25	3,483
Other comprehensive (loss) income	(3,140)	9,160
Comprehensive (loss) income	$ (258)	$ 27,500