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Collaboration and Licensing Revenue
 9 Months Ended
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Collaboration and Licensing Revenue Collaboration and Licensing Revenue
The Company's collaborations and licensing agreements may provide for multiple promises to be satisfied by the Company and typically include a license to the Company's technology platforms, participation in collaboration committees, and performance of certain research and development services. Based on the nature of the promises in the Company's collaboration and licensing agreements, the Company typically combines most of its promises into a single performance obligation because the promises are highly interrelated and not individually distinct. Options to acquire additional services are considered to determine if they constitute material rights. At contract inception, the transaction price is typically the upfront payment received and is allocated to the performance obligations. The Company has determined the transaction price should be recognized as revenue based on its measure of progress under the agreement primarily based on inputs necessary to fulfill the performance obligation.
The Company recognizes the reimbursement payments received for research and development efforts in the period when the services are performed, in connection with the single performance obligation discussed above. The reimbursements relate specifically to the Company's efforts to provide services, and the reimbursements are consistent with what the Company would typically charge other collaborators for similar services. The Company assesses the uncertainty of when and if any milestones will be achieved to determine whether the milestone is included in the transaction price. The Company then assesses whether the revenue is constrained based on whether it is probable that a significant reversal of revenue would not occur when the uncertainty is resolved. Royalties, including sales-based milestones, received under the agreements will be recognized as revenue when sales have occurred because the Company applies the sales- or usage-based royalties recognition exception provided for under ASC 606. The Company determined the application of this exception is appropriate because at the time the royalties are generated, the technology license granted in the agreement is the predominant item to which the royalties relate.
The Company determines whether collaborations and licensing agreements are individually significant for disclosure based on a number of factors, including total revenue recorded by the Company pursuant to collaboration and licensing agreements, collaborators or licensees with equity method investments, or other qualitative factors. Collaboration and licensing revenues generated from consolidated subsidiaries are eliminated in consolidation.
The following table summarizes the amounts recorded as revenue in the condensed consolidated statements of operations for each significant counterparty to a collaboration or licensing agreement for the three and nine months ended September 30, 2020 and 2019.
 Three Months Ended 
 September 30,		Nine Months Ended 
 September 30,
2020201920202019
ZIOPHARM Oncology, Inc.$— $431 $100 $2,130 
Oragenics, Inc.2,823 231 3,053 613 
Intrexon Energy Partners, LLC— 823 — 2,596 
Intrexon Energy Partners II, LLC— 293 — 1,217 
Castle Creek Biosciences, Inc.2,394 402 16,967 3,247 
Harvest start-up entities (1)— 100 — 4,862 
Other6 16 139 52 
Total$5,223 $2,296 $20,259 $14,717 
(1)For the three and nine months ended September 30, 2019, revenues recognized from collaborations with Harvest start-up entities include: Thrive Agrobiotics, Inc.; Exotech Bio, Inc.; and AD Skincare, Inc.
Except for the agreements discussed below, there have been no significant changes to the agreements with our collaborators and licensees in the nine months ended September 30, 2020.
Oragenics Collaboration
In June 2015, the Company entered into an ECC with Oragenics, a related party at the time, for the treatment of oral mucositis. In July 2020, the Company and Oragenics mutually agreed to terminate the ECC, and accordingly, the Company recognized the remaining balance of deferred revenue associated with the ECC totaling $2,823. Following the termination of the ECC, Oragenics is no longer considered a related party.
Castle Creek Collaborations
In October 2012, the Company entered into an ECC (the "2012 Castle Creek ECC") with Castle Creek Biosciences, Inc. ("Castle Creek", formerly known as Fibrocell Science, Inc.). Castle Creek was a publicly traded cell and gene therapy company focused on diseases affecting the skin and connective tissue and a related party until it was acquired in December 2019 by Castle Creek Pharmaceutical Holdings, Inc. ("Castle Creek Pharmaceutical"), a privately held company focused on developing medicine for rare genetic disorders. Pursuant to the 2012 Castle Creek ECC, at the transaction effective date, Castle Creek received a license to the Company's technology platform to develop and commercialize genetically modified and non-genetically modified autologous fibroblasts and autologous dermal cells in the United States of America. The 2012 Castle Creek ECC was subsequently amended in June 2013 to expand the field of use defined in the ECC agreement. In March 2020, the Company and Castle Creek terminated the 2012 Castle Creek ECC by mutual agreement ("Termination Agreement") with the parties agreeing that the two drug product candidates, FCX-007 and FCX-013, pursuant to the ECC would be treated as "Retained Products" under the terms of the 2012 Castle Creek ECC. As Retained Products, Castle Creek retains a license under the 2012 Castle Creek ECC to continue to develop and commercialize the Retained Products within the field of use of the 2012 Castle Creek ECC for so long as Castle Creek continues to pursue such development and commercialization. No further licenses to the Company's technology within the field of use are provided to Castle Creek. Royalty provisions set forth in the 2012 Castle Creek ECC remain in effect for the Retained Products. Additionally, the Termination Agreement provides for the Company to perform certain drug product manufacturing activities related to the Retained Products. The Termination Agreement was accounted for as a new contract, and the remaining deferred revenue from the 2012 Castle Creek ECC is being recognized prospectively as the manufacturing activities are performed.
In December 2015, the Company entered into a second ECC with Castle Creek (the "2015 Castle Creek ECC"). Pursuant to the ECC, at the transaction effective date, Castle Creek received a license to the Company's technology platform to develop and commercialize genetically-modified fibroblasts to treat chronic inflammatory and degenerative diseases of the joint, including arthritis and related conditions. In February 2020, the Company and Castle Creek mutually agreed to terminate the 2015 Castle Creek ECC, and accordingly, the Company recognized the remaining balance of deferred revenue associated with the 2015 Castle Creek ECC totaling $10,000.
Deferred Revenue
Deferred revenue primarily consists of consideration received for the Company's collaboration and licensing agreements. Deferred revenue consisted of the following:
September 30,
2020		December 31,
2019
Collaboration and licensing agreements$30,964 $50,593 
Prepaid product and service revenues2,932 2,805 
Other263 435 
Total$34,159 $53,833 
Current portion of deferred revenue$4,144 $5,697 
Long-term portion of deferred revenue30,015 48,136 
Total$34,159 $53,833 
Revenue is recognized under the collaboration and licensing agreements as services are performed. Certain of the arrangements are not active while the other party evaluates the status of the project and its desired future development activities. The following table summarizes the remaining balance of deferred revenue associated with upfront and milestone payments for each significant counterparty to a collaboration or licensing agreement as of September 30, 2020 and December 31, 2019, as well as the estimated remaining performance period as of September 30, 2020.
Average Remaining Performance Period (Years)September 30,
2020		December 31,
2019
Oragenics, Inc.0.0$— $2,864 
Intrexon Energy Partners, LLC3.58,362 8,362 
Intrexon Energy Partners II, LLC4.212,843 12,843 
Castle Creek Biosciences, Inc.0.5924 17,697 
Harvest start-up entities (1)4.46,993 6,993 
Other2.51,842 1,834 
Total$30,964 $50,593 
(1)As of September 30, 2020 and December 31, 2019, the balance of deferred revenue for collaborations with Harvest start-up entities includes: Thrive Agrobiotics, Inc.; Exotech Bio, Inc.; and AD Skincare, Inc.