Segmented Information Operating (loss) income by segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 6,700	$ 6,779
Net Investment Income	(2,957)	7,087
Net realized (losses) gains	(17)	306
Gain (Loss) on Sale of Equity Investments	381	0
Loss on change in fair value of limited liability investments, at fair value	(7,393)	(1,832)
Amortization of intangible assests not allocated to segments	2,376	1,085
Accretion Expense	0	212
Interest Expense	7,407	6,348
Other Nonoperating Income (Expense)	(8,963)	(10,503)
Loss on change in fair value of debt	(1,720)	(8,487)
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	17	0
Equity in net (loss) income of investee	(2,499)	2,115
Loss from continuing operations before income tax expense (benefit)	(21,949)	(12,514)
Income tax expense (benefit)	315	(16,688)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(22,264)	4,174
Net change in unrealized loss on private company investments	(1,629)	(758)
Other than Temporary Impairment Losses, Investments	100	100
Reportable Subsegments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	4,215	3,680
Reportable Legal Entities [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 2,485	$ 3,099