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Selected Balance Sheet Information | 3 Months Ended
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Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplemental Balance Sheet Disclosures [Text Block] | 4. Selected Balance Sheet Information Prepaid expenses and other current assets (in thousands):
|  | March 31, 2015 |  | December 31, 2014 |
Intrexon prepaid research and development expenses |  | $ | 1,060 |  | $ | 1,067 |
Prepaid insurance |  |  | 140 |  |  | 228 |
Prepaid expenses |  |  | 374 |  |  | 253 |
Total |  | $ | 1,574 |  | $ | 1,548 |
The anticipated Intrexon research and development expenses for the next twelve months are classified as a current asset. The Company may terminate the arrangement at any time and receive a cash refund of the remaining balance minus any amounts owed to Intrexon. Property and equipment (in thousands):
|  | March 31, 2015 |  | December 31, 2014 |
Computer and office equipment |  | $ | 111 |  | $ | 93 |
Software |  |  | 11 |  |  | 11 |
|  |  | 122 |  |  | 104 |
Less accumulated depreciation |  |  | (47) |  |  | (39) |
Total |  | $ | 75 |  | $ | 65 |
Accrued expenses (in thousands):
|  | March 31, 2015 |  | December 31, 2014 |
Accrued manufacturing costs |  | $ | 74 |  | $ | 247 |
Accrued vendor payments |  |  | 225 |  |  | 176 |
Accrued milestone payments |  |  | 1,000 |  |  | 350 |
Accrued clinical consulting services |  |  | 1,347 |  |  | 525 |
Total |  | $ | 2,646 |  | $ | 1,298 |

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