Stock-based Compensation Expense Category (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock-based Compensation
Total stock-based compensation	$ 7,050	$ 4,950	$ 3,562
Share-based Compensation Arrangement by Share-based Payment Award, Capitalized Cost	204	175	143
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	7,050	4,950	3,562
Claims expenses
Stock-based Compensation
Total stock-based compensation	697	571	355
Other cost of revenue
Stock-based Compensation
Total stock-based compensation	353	356	239
Sales and marketing
Stock-based Compensation
Total stock-based compensation	2,120	1,335	722
Technology and development
Stock-based Compensation
Total stock-based compensation	364	209	216
General and administrative
Stock-based Compensation
Total stock-based compensation	3,312	2,304	1,887
Total Expense [Member]
Stock-based Compensation
Total stock-based compensation	$ 6,846	$ 4,775	$ 3,419
Restricted Stock Units (RSUs) [Member]
Stock-based Compensation
Restricted stock, outstanding	581,943	451,160	256,842
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 14,600
Share-based Compensation Arrangement , Non-employee, Weighted Average Remaining Vesting Period	3 years

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Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.

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Unrecognized cost of unvested share-based compensation awards.

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