Segmented Information Segment (loss) income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Total segment operating income	$ 1,628	$ 1,389	$ 5,056	$ 4,602
Net Investment Income	629	1,133	2,277	3,165
Net realized losses	(414)	0	(17)	(1)
Gain on change in fair value of equity investments	337	0	1,081	0
Investment Company, Net Assets, Period Increase (Decrease)	(131)	2,448	(1,592)	789
Amortization of intangible assets	1,339	269	1,848	815
Accretion Expense	0	0	0	212
Interest expense not allocated to segments	1,900	1,602	5,461	4,650
Other income and expenses not allocated to segments, net	210	(1,896)	(5,415)	(7,191)
Loss on change in fair value of debt	(1,450)	(1,178)	(2,511)	(5,769)
Gain on disposal of subsidiary	0	0	17	0
Equity in net (loss) income of investee	(339)	(897)	(623)	1,343
Loss from continuing operations before income tax (benefit) expense	(2,750)	(872)	(9,172)	(9,580)
Income tax (benefit) expense	(144)	124	300	1,648
Loss from continuing operations	(2,606)	(996)	(9,472)	(11,228)
Net change in unrealized gain (loss) on private company investments	19	0	(136)	(1,265)
Reportable Subsegments [Member]
Segment Reporting Information [Line Items]
Total segment operating income	1,155	864	3,091	2,287
Reportable Legal Entities [Member]
Segment Reporting Information [Line Items]
Total segment operating income	$ 473	$ 525	$ 1,965	$ 2,315