Consolidated Statement of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net Cash Provided by Operating Activities [Abstract]
Net loss	$ (1,296)	$ (1,480)
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and Amortization	1,613	927
Stock-based compensation expense	1,357	968
Other, Net	(3)	23
Increase (Decrease) in Operating Assets [Abstract]
Accounts and other receivables	5,894	3,926
Prepaid expenses and other assets	(325)	129
Accounts Payable, Accrued Liabilities, and Other Liabilities	1,256	910
Claims Reserve	1,078	743
Deferred revenue	5,523	4,041
Net cash provided by operating activities	3,959	2,077
Net Cash Provided by Investing Activities [Abstract]
Payments to Acquire Investments	(17,350)	(7,140)
Maturities of Investment Securities	10,205	5,300
Purchases of property and equipment	(878)	(992)
Payments for (Proceeds from) Other Investing Activities	(1,479)	0
Net cash used in investing activities	(9,502)	(2,832)
Net Cash Provided by Financing Activities [Abstract]
Proceeds from exercise of stock options	661	481
Payments Related to Tax Withholding for Share-based Compensation	(197)	0
Proceeds from Debt, Net of Issuance Costs	5,200	5,500
Proceeds from (Payments for) Other Financing Activities	(271)	(216)
Net cash provided by financing activities	5,393	5,765
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash, net	220	70
Net Increase in Cash, Cash Equivalents, and Restricted Cash	70	5,080
Cash, Cash Equivalents, and Restricted Cash at beginning of period	27,952	26,306
Cash, Cash Equivalents, and Restricted Cash, End of Period	28,022	31,386
Supplemental Cash Flow Information [Abstract]
Redemption of Warrants Non-Cash; Common Stock	4,500	3,000
Purchases of property and equipment included in accounts payable and accrued liabilities	$ 141	$ 680