Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Net loss	$ (9,561)	$ (8,392)
Depreciation and amortization	1,129	729
Amortization of Financing Costs and Discounts	0	470
Warrant expense	0	480
Stock-based compensation expense	1,600	1,193
Other Operating Activities, Cash Flow Statement	113	(52)
Accounts receivable	(923)	(320)
Prepaid expenses and other current assets	(380)	(121)
Accounts payable	(552)	75
Accrued liabilities	(617)	(428)
Claims reserve	714	(1,219)
Deferred revenue	749	303
Other payables	(942)	743
Net cash used in operating activities	(8,896)	(6,435)
Payments to Acquire Investments	11,066	16,266
Proceeds from Sale, Maturity and Collection of Investments	10,266	18,277
Purchases of property and equipment	(2,644)	(2,268)
Net cash used in investing activities	(3,444)	(257)
Decrease in Restricted Cash	0	300
Proceeds from Long-term Lines of Credit	0	2,000
Payments of Financing Costs	0	(1,091)
Proceeds from exercise of stock options	801	46
Payment on line of credit	(14,900)	(300)
Payments Related to Tax Withholding for Share-based Compensation	(384)	0
Net cash (used in) provided by financing activities	(14,483)	955
Effect of foreign exchange rates on cash, net	(118)	86
Net change in cash and cash equivalents	(26,941)	(5,651)
Cash and cash equivalents at beginning of period	53,098	14,939
Cash and cash equivalents at end of period	26,157	9,288
Income taxes paid	117	9
Interest paid	259	457
Increase in payables for property and equipment	349	518
Increase in payables for deferred financing costs	0	1,487
Cashless exercise of preferred stock warrants	$ 0	$ 999