Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net loss	$ (14,440)	$ (10,832)
Adjustments to reconcile net loss to net cash used for operating activities:
Depreciation	146	126
Amortization of debt discount and issuance costs	2,574	449
Interest expense added to loan principal	4,518	3,982
Loss on early extinguishment of debt	2,250
Compensation charge for stock and share option awards	759	510
Changes in operating assets and liabilities:
Decrease in accounts receivable	129	144
Increase in prepaid expenses and other	(22)	(379)
Increase in other assets	(357)	(243)
(Decrease) increase in accounts payable	(63)	324
(Decrease) increase in accrued liabilities	(315)	571
Net cash used for operating activities	(4,821)	(5,348)
Cash flows from investing activities:
Additions to property, plant and equipment		(240)
Net cash used for investing activities		(240)
Cash flows from financing activities:
Up-front payment related to lease liability with related party	11,509
Proceeds from the issuance of long-term debt	7,600
Debt Issuance costs	(102)
Principal payments on long-term debt	(10,958)	(12)
Net cash provided by (used for) financing activities	8,049	(12)
Net increase (decrease) in cash and cash equivalents	3,228	(5,600)
Cash and cash equivalents, beginning of period	2,690	16,206
Cash and cash equivalents, end of period	$ 5,918	$ 10,606