Consolidated Statements of Cash Flows (USD $) | 9 Months Ended | 87 Months Ended |
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 |
Cash flows from operating activities: | ' | ' | ' |
Net loss | ($27,360,000) | ($18,945,000) | ($111,544,000) |
Adjustments to reconcile net loss to net cash used in operating activities: | ' | ' | ' |
Stock-based compensation expense | 4,072,000 | 2,173,000 | 11,584,000 |
Acquired in-process research and development | ' | ' | 21,749,000 |
Noncash interest expense | 400,000 | 35,000 | 2,298,000 |
Noncash interest expense-related parties | ' | ' | 286,000 |
Contribution of services by stockholder | ' | ' | 130,000 |
Issuance of Common Stock to non-employee for services | ' | ' | 121,000 |
Change in fair value of Common Stock warrant liability | ' | ' | 234,000 |
Change in fair value of embedded conversion feature | ' | ' | 831,000 |
Change in fair value of Preferred Stock warrant liability | ' | ' | 1,407,000 |
Depreciation expense | 11,000 | ' | 55,000 |
Changes in operating assets and liabilities: | ' | ' | ' |
Prepaid and other current assets | 114,000 | -324,000 | -339,000 |
Interest payable | -3,000 | 97,000 | 116,000 |
Accounts payable and accrued expenses | 252,000 | 875,000 | 3,466,000 |
Net cash used in operating activities | -22,514,000 | -16,089,000 | -69,606,000 |
Cash flows from investing activities: | ' | ' | ' |
Purchase of property and equipment | -187,000 | ' | -507,000 |
Purchase of in-process research and development | ' | ' | -3,843,000 |
Net cash used in investing activities | -187,000 | ' | -4,350,000 |
Cash flows from financing activities: | ' | ' | ' |
Proceeds from PCP notes payable-related party | ' | ' | 570,000 |
Payment of PCP notes payable-related party | ' | ' | -570,000 |
Payment of PCP notes payable-Asphelia asset purchase | ' | -750,000 | -750,000 |
Proceeds from notes payable-related parties | ' | ' | 2,221,000 |
Proceeds from borrowings under line of credit | ' | ' | 80,000 |
Payment of line of credit | ' | ' | -80,000 |
Proceeds from Senior Convertible Notes | ' | ' | 7,570,000 |
Payment of debt issue costs | ' | ' | -737,000 |
Payment of notes payable-related parties | ' | ' | -600,000 |
Proceeds from issuance of Common Stock | 90,629,000 | 28,750,000 | 119,682,000 |
Payment of costs related to the issuance of Common Stock | -1,860,000 | -2,305,000 | -4,165,000 |
Net cash provided by financing activities | 88,769,000 | 40,407,000 | 180,223,000 |
Increase in cash and cash equivalents | 66,068,000 | 24,318,000 | 106,267,000 |
Cash and cash equivalents-beginning of period | 40,199,000 | 23,160,000 | ' |
Cash and cash equivalents-end of period | 106,267,000 | 47,478,000 | 106,267,000 |
Supplemental disclosure of cash flow information: | ' | ' | ' |
Cash paid for interest | 1,052,000 | 36,000 | 1,609,000 |
Supplemental disclosure of non-cash financing and investing activities: | ' | ' | ' |
Assumption of PCP Note related to Asphelia Asset Purchase | ' | ' | 750,000 |
Issuance of Warrant related to Hercules Note | 1,098 | ' | ' |
Hercules Note [Member] | ' | ' | ' |
Cash flows from financing activities: | ' | ' | ' |
Proceeds from issuance of Hercules Note | ' | 15,000,000 | 15,000,000 |
Payment of debt issue costs | ' | -288,000 | -288,000 |
Supplemental disclosure of non-cash financing and investing activities: | ' | ' | ' |
Issuance of Warrant related to Hercules Note | ' | ' | 323,000 |
Series B Convertible Preferred Stock [Member] | ' | ' | ' |
Supplemental disclosure of non-cash financing and investing activities: | ' | ' | ' |
Issuance of Convertible Preferred Stock Series B for purchase of assets | ' | ' | 16,114,000 |
Series C Convertible Preferred Stock [Member] | ' | ' | ' |
Cash flows from financing activities: | ' | ' | ' |
Proceeds from issuance of Convertible Preferred Stock | ' | ' | 25,784,000 |
Payment of costs related to the issuance of Convertible Preferred Stock | ' | ' | -2,884,000 |
Supplemental disclosure of non-cash financing and investing activities: | ' | ' | ' |
Issuance of Convertible Preferred Stock Series C warrants | ' | ' | 1,286,000 |
Series A Convertible Preferred Stock [Member] | ' | ' | ' |
Cash flows from financing activities: | ' | ' | ' |
Proceeds from issuance of Convertible Preferred Stock | ' | ' | 21,681,000 |
Payment of costs related to the issuance of Convertible Preferred Stock | ' | ' | -2,291,000 |
Supplemental disclosure of non-cash financing and investing activities: | ' | ' | ' |
Issuance of Common Stock warrants related to the Convertible Preferred Stock Series A financing | ' | ' | 621,000 |
Conversion of Senior Convertible Notes into Convertible Preferred Stock Series A | ' | ' | 8,601,000 |
Conversion of notes payable-related parties into Convertible Preferred Stock Series A | ' | ' | 1,907,000 |
Series A, B and C Convertible Preferred Stock [Member] | ' | ' | ' |
Supplemental disclosure of non-cash financing and investing activities: | ' | ' | ' |
Issuance of Common Stock for Convertible Preferred Stock Series A, B and C | ' | ' | $67,004,000 |