Note 18 - Segmented Information - Reconciliation of Operating Profit (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total segment operating income		$ (114)	$ (610)	$ 1,486	$ (2,449)
Net investment income		389	625	1,213	2,025
Net realized gains (losses)		159	(59)	397	157
(Loss) gain on change in fair value of equity investments		(39)	1,177	(235)	1,069
Gain on change in fair value of limited liability investments, at fair value		1,211	274	1,740	2,050
Net change in unrealized loss on private company investments		0	(74)	0	(744)
Other-than-temporary impairment loss		0	0	0	(117)
Interest expense not allocated to segments		(1,497)	(1,813)	(4,642)	(5,963)
Other revenue and expenses not allocated to segments, net		(53)	(152)	2,581	(398)
Amortization of intangible assets		(2,432)	(572)	(3,425)	(1,719)
(Loss) gain on change in fair value of debt		(412)	(503)	(2,169)	1,940
Gain on extinguishment of debt		0	0	2,494	0
Loss from continuing operations before income tax benefit		(2,682)	(1,403)	(5,722)	(3,353)
Income tax benefit		(2,456)	(279)	(6,139)	(409)
(Loss) income from continuing operations		(226)	(1,124)	417	(2,944)
Operating Segments [Member]
Total segment operating income		2,495	2,004	9,396	5,574
Operating Segments [Member] | Extended Warranty Segment [Member]
Total segment operating income	[1]	1,400	1,205	9,310	3,340
Gain on extinguishment of debt				2,200
Operating Segments [Member] | Leased Real Estate Segment [Member]
Total segment operating income	[2]	1,095	799	86	2,234
Corporate, Non-Segment [Member]
Other revenue and expenses not allocated to segments, net		(2,556)	(2,462)	(8,308)	(7,625)
Gain on extinguishment of debt		$ 0	$ 0	$ 311	$ 0

[1] For the nine months ended September 30, 2021, Extended Warranty segment operating income includes gain on extinguishment of debt of $2.2 million, related to PPP loan forgiveness directly associated with the respective warranty businesses. Extended Warranty segment operating income before the gain on extinguishment of debt totaled $7.1 million for the nine months ended September 30, 2021. See Note 11, "Debt," for further discussion.

[2] For the nine months ended September 30, 2021, includes $2.9 million expense due to the release of an indemnification receivable, which is exactly offset in net income (loss) (not shown here) by an income tax benefit of $2.9 million for the release of a liability that had been included in income taxes payable in the consolidated balance sheets.