Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating activities:
Net loss	$ (27,404)	$ (11,316)
Depreciation	167	25
Accretion of debt discount	278	321
Amortization of intangible assets	485	485
Derivative loss		8,946
Stock-based compensation expense	7,658	2,479
Changes in assets and liabilities:
Accounts receivable	1,614	(9,846)
Inventories	295	(795)
Prepaid expenses and other assets	133	30
Accounts payable and accrued expenses	(2,210)	(602)
Deferred revenue	(366)	1,535
Net cash flows from operating activities	(19,350)	(8,738)
Investing activities:
Purchase of equipment	(583)	(1,020)
Net cash flows from investing activities	(583)	(1,020)
Financing activities:
Proceeds from sales of securities		62,037
Equity financing costs	(40)
Proceeds from exercise of stock options	303	2,833
Proceeds from exercise of common stock warrants	1	3,994
Payment on note payable	(3,335)	(4,000)
Proceeds from notes payable	20,667
Payment of deferred financing fees	(486)
Return of short swing profits	6	82
Net cash flows from financing activities	17,116	64,946
Net change in cash and cash equivalents	(2,817)	55,188
Cash and cash equivalents at beginning of year	70,472	23,176
Cash and cash equivalents at end of year	67,655	78,364
Cash paid for interest	$ 491	$ 824