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Stockholders' Equity (Details Textual) (USD $) | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2013 Equity Offering Sales Agreement [Member] | Dec. 31, 2012 Intrexon [Member] | Dec. 31, 2012 Prev Abr Llc [Member] | Dec. 31, 2013 Cedars-Sinai Medical Center [Member] | Dec. 31, 2012 Warrant [Member] | Dec. 31, 2013 IPO [Member] | Dec. 31, 2013 IPO [Member] | Dec. 31, 2012 IPO [Member] | Oct. 31, 2012 Private Placement [Member]
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  | 13,225,000 |  |  | 6,750,000
Common Stock, Closing Price, Per Share |  |  |  |  |  |  |  | $ 1.00 |  |  | $ 1.60
Proceeds from Issuance of Private Placement |  |  |  |  |  |  |  |  |  |  | $ 10,800,000
Noninterest Expense Offering Cost |  |  |  |  |  |  |  | 1,000,000 |  |  | 680,000
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period |  |  |  |  |  |  |  |  | 291,667 | 374,851 |
Proceeds from Stock Options Exercised | 231,000 | 127,000 |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Other than Options, Exercises in Period | 0 | 1,768,167 |  |  |  |  | 1,768,167 |  |  |  |
Proceeds from Issuance of Common Stock for Exclusive Channel Collaboration Agreement |  |  |  |  |  |  | 2,000,000 |  |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  |  |  | 625,000 | 334,911 |  |  |  |  | 3,125,000
Equity Issued in Business Combination, Fair Value Disclosure |  |  |  | 7,800,000 | 1,200,000 | 425,000 |  |  |  |  |
Sale of Stock for Channel Agreement Price, Per Share |  |  |  | $ 2.20 | $ 1.87 | $ 1.27 |  |  |  |  |
Proceeds from Issuance Initial Public Offering |  |  | $ 15,000,000 |  |  |  |  | $ 13,200,000 |  |  |
Stock Issued During Period, Shares for Exclusive Channel Collaboration Agreement |  |  |  | 3,552,210 |  |  |  |  |  |  |

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