Revenue from Contracts with Customers Disaggregates revenues from contracts with customer by revenue type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Insurance Commissions and Fees	$ 9,871	$ 7,687	$ 28,382	$ 20,906
Commissions	971	525	2,718	2,154
Insurance Services Revenue	2,720	2,603	7,655	6,175
Vehicle service agreement fees [Member]
Disaggregation of Revenue [Line Items]
Insurance Commissions and Fees	4,410	4,310	13,025	12,942
GAP commissions [Member]
Disaggregation of Revenue [Line Items]
Insurance Commissions and Fees	200	212	592	464
Warranty product commissions [Member]
Disaggregation of Revenue [Line Items]
Insurance Commissions and Fees	739	562	1,971	1,325
Commissions	203	0	565	0
Homebuilder warranty service fees [Member]
Disaggregation of Revenue [Line Items]
Insurance Commissions and Fees	1,599	0	4,574	0
Reportable Subsegments [Member]
Disaggregation of Revenue [Line Items]
Insurance Commissions and Fees	$ 9,871	$ 7,687	$ 28,382	$ 20,906