Segmented Information - Revenue by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Service fee and commission income	$ 11,772	$ 8,860	$ 21,587	$ 18,511
Other income	113	108	258	321
Rental income	3,341	3,345	6,682	6,693
Total revenues	15,226	12,313	28,527	25,525
Operating Segments
Segment Reporting Information [Line Items]
Total revenues	15,226	12,309	28,527	25,514
Not allocated to segments
Segment Reporting Information [Line Items]
Rental income	0		0
Rental income		4		11
Extended Warranty | Operating Segments
Segment Reporting Information [Line Items]
Service fee and commission income	11,772	8,860	21,587	18,511
Other income	41	36	116	102
Total revenues	11,813	8,896	21,703	18,613
Leased Real Estate | Operating Segments
Segment Reporting Information [Line Items]
Other income	72	72	142	219
Rental income	3,341		6,682
Rental income		3,341		6,682
Total revenues	$ 3,413	$ 3,413	$ 6,824	$ 6,901