Segmented Information Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Net premiums earned	$ 33,518	$ 31,813	$ 66,440	$ 61,240
Other income	2,815	2,791	5,630	5,165
Service fee and commission income	6,873	5,394	13,435	10,716
Rental income	3,341	0	6,682	0
Total segment revenues	44,915	41,137	91,656	78,017
Net investment (loss) income	(2,366)	1,072	(1,663)	1,000
Net realized gains (losses)	734	67	1,132	(104)
Other income not allocated to segments	44	64	89	111
Reportable Subsegments [Member]
Segment Reporting Information [Line Items]
Other income	51	62	136	116
Service fee and commission income	6,873	5,394	13,435	10,716
Total segment revenues	6,924	5,456	13,571	10,832
Other Segments [Member]
Segment Reporting Information [Line Items]
Net premiums earned	33,518	31,813	66,440	61,240
Other income	2,560	2,665	5,033	4,938
Total segment revenues	36,078	34,478	71,473	66,178
Reportable Legal Entities [Member]
Segment Reporting Information [Line Items]
Other income	160	0	372	0
Rental income	3,341	0	6,682	0
Total segment revenues	3,501	0	7,054	0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total segment revenues	46,503	39,934	92,098	77,010
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Net premiums earned	$ 0	$ 0	$ 0	$ 0