Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Third Security and Affiliates The Company's Executive Chairman is also the Senior Managing Director and Chairman of Third Security and owns 100% of the equity interests of Third Security. Through December 2019, the Company was party to a Services Agreement ("Services Agreement") with Third Security pursuant to which Third Security provided the Company with certain professional, legal, financial, administrative, and other support services necessary to support the Company and its Executive Chairman. Under the Services Agreement, as consideration for providing these services, Third Security was entitled to a fee paid in the form of fully-vested shares of Precigen common stock that approximated $800 per month. In 2018, the number of shares of common stock was calculated based on the closing price of the Company's common stock on the 15th day of each month and issued to Third Security at the end of the month. In 2019, the number of shares of common stock was calculated based on the volume weighted average of the closing price of the Company's common stock over the 30-day period ending on the 15th day of the calendar month when the applicable services were provided. For the years ended December 31, 2019 and 2018, the Company issued 1,606,062 shares and 696,033 shares, respectively, with values of $8,233 and $8,324, respectively, to Third Security as payment for services rendered pursuant to the Services Agreement. Following the expiration of the Services Agreement, the Company entered into a new agreement with Third Security under which the Company reimburses Third Security for certain tax-related services performed by Third Security as requested by the Company. The Company also reimburses Third Security for certain out-of-pocket expenses incurred on the Company's behalf prior to and after the expiration of the Services Agreement under a separate agreement. The total expenses incurred by the Company under these arrangements were $159, $26, and $47 for the years ended December 31, 2020, 2019 and 2018, respectively. The Company also subleases certain administrative offices to Third Security. The significant terms of the lease mirror the terms of the Company's lease with the landlord, and the Company recorded sublease income of $83, $89, and $89 for the years ended December 31, 2020, 2019 and 2018, respectively. See also Note 15 regarding compensation arrangements between the Company and its Executive Chairman. In October 2017, the Company entered into a Preferred Stock Equity Facility ("Preferred Stock Equity Facility") with an affiliate of Third Security ("Third Security Affiliate"). Under the Preferred Stock Equity Facility, the Company could, from time to time at its sole and exclusive option, issue and sell to the Third Security Affiliate, up to $100,000 of newly issued Series A Redeemable Preferred Stock ("Series A Preferred Stock"). In conjunction with the Company's July 2018 registered underwritten public offering of Convertible Notes (Note 12), the Preferred Stock Equity Facility was terminated. No shares of Series A Preferred Stock had been issued under the Preferred Stock Equity Facility. See Notes 1, 3, and 14 regarding additional transactions with affiliates of Third Security. Transactions with ECC Parties Collaborators in which the Company holds more than a de minimis equity interest, including interests received as upfront or milestone payments through collaborations, are considered related parties. The Company held Series 1 Preferred Stock (the "Preferred Shares") of ZIOPHARM previously acquired through collaborations. In conjunction with the ZIOPHARM License Agreement in October 2018 (Note 6), the Company returned to ZIOPHARM all of the Preferred Shares owned or accrued by the Company as of the effective date of the agreement. During the year ended December 31, 2018, the Company recognized $14,793 of dividend income in the accompanying consolidated statement of operations. Following the transaction in October 2018, ZIOPHARM is no longer a related party. The Company held Series A Convertible Preferred Stock (the "Convertible Preferred Shares"), a convertible note, common shares of Castle Creek, and warrants to purchase shares of Castle Creek common stock previously acquired through collaborations and other transactions. As a result of the acquisition of Castle Creek by Castle Creek Pharmaceutical in December 2019, the Company received $1,280 in December 2019 for its shares of Castle Creek common stock and received a total of $3,311 in January 2020 for the Convertible Preferred Shares and the convertible note, including accrued interest thereon. The $3,311 is included in receivables on the accompanying consolidated balance sheet as of December 31, 2019. The Company recognized a total gain of $3,222 on the change in fair value of these instruments, which is included in total other expense, net, in the accompanying consolidated statement of operations for the year ended December 31, 2019. Subsequent to the acquisition by Castle Creek Pharmaceutical, Castle Creek is no longer a related party. During 2018, the Company mutually terminated ECC agreements with three separate related parties which resulted in the recognition of the remaining deferred revenue associated with these ECCs totaling $11,877.