CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows From Operating Activities:
Net loss	$ (138,493)	$ (98,497)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	80	79
Amortization of deferred debt costs	785	4,406
Stock-based compensation expense	16,195	3,909
Change in fair value of derivative instruments—warrants	(161)	(237)
Common stock issued for interest on Notes		2,445
Debt conversion expense	1,209	25,615
Transaction fees on Note conversions	0	(434)
Changes in operating assets and liabilities:
Accounts receivable	(1,782)	0
Inventories	(6,213)	0
Security deposit	(64)	0
Prepaid expenses and other current assets	(7,479)	(961)
Accounts payable and accrued expenses	13,714	4,546
Deferred revenues, net	1,498	0
Accrued interest expense on senior convertible notes	(61)	(998)
Total Adjustments	17,721	38,370
Net Cash used in Operating Activities	(120,772)	(60,127)
Cash Flows From Investing Activities:
Net sales of available-for-sale securities	0	50,097
Additions to property and equipment	(15)	(272)
Net Cash (used in) provided by Investing Activities	(15)	49,825
Cash Flows From Financing Activities:
Proceeds of sale of common stock	121,951	89,845
Payment for deferred financing costs	(1,591)	0
Fees and expenses — sale of common stock	(347)	0
Proceeds from exercise of stock options	347	23
Net Cash provided by Financing Activities	120,360	89,868
Net (decrease) increase in cash and cash equivalents	(427)	79,566
Cash and cash equivalents at beginning of period	82,387	61,653
Cash and cash equivalents at end of period	81,960	141,219
Supplementary disclosure of cash flow information:
Cash paid for interest on senior convertible notes	698	2,969
Cash paid for taxes	44	45
Supplementary disclosure of non-cash investing and financing activities:
Conversion of senior convertible notes to Synergy Common Stock	$ 4,912	$ 82,274