Collaboration and Licensing Revenue | Collaboration and Licensing Revenue The Company generates revenue through contractual agreements with collaborators (known as exclusive channel collaborations, "ECC" or "ECCs") and licensing agreements whereby the collaborators or the licensees obtain exclusive access to the Company's proprietary technologies for use in the research, development and commercialization of products and/or treatments in a contractually specified field of use. Upfront and milestone payments are typically deferred and recognized over the expected life of the Company's technology platform using a straight-line approach. The Company recognizes the reimbursement payments received for research and development services in the period in which the services are performed and collection is reasonably assured. The following tables summarize the amounts recorded as revenue in the consolidated statements of operations for each significant counterparty to a collaboration or licensing agreement for the three and six months ended June 30, 2017 and 2016 . Three Months Ended June 30, 2017 Revenue Recognized From Total Upfront and Milestone Payments Research and Development Services ZIOPHARM Oncology, Inc. $ 4,842 $ 5,122 $ 9,964 Oragenics, Inc. 261 214 475 Fibrocell Science, Inc. 605 1,348 1,953 Genopaver, LLC 68 1,445 1,513 S & I Ophthalmic, LLC — 72 72 OvaXon, LLC — 880 880 Intrexon Energy Partners, LLC 625 1,295 1,920 Persea Bio, LLC 125 141 266 Ares Trading S.A. 1,597 1,206 2,803 Intrexon Energy Partners II, LLC 500 456 956 Intrexon T1D Partners, LLC 272 1,016 1,288 Harvest start-up entities (1) 606 3,846 4,452 Other 923 699 1,622 Total $ 10,424 $ 17,740 $ 28,164 (1) For the three months ended June 30, 2017 , revenue recognized from collaborations with Harvest start-up entities include Thrive Agrobiotics, Inc.; Exotech Bio, Inc.; Relieve Genetics, Inc.; AD Skincare, Inc.; Genten Therapeutics, Inc.; and CRS Bio, Inc. Three Months Ended June 30, 2016 Revenue Recognized From Total Upfront and Milestone Payments Research and Development Services ZIOPHARM Oncology, Inc. $ 922 $ 6,048 $ 6,970 Oragenics, Inc. 261 246 507 Fibrocell Science, Inc. 605 789 1,394 Genopaver, LLC 68 1,569 1,637 S & I Ophthalmic, LLC — 2,358 2,358 OvaXon, LLC — 808 808 Intrexon Energy Partners, LLC 625 3,587 4,212 Persea Bio, LLC 125 206 331 Ares Trading S.A. 1,597 621 2,218 Intrexon Energy Partners II, LLC 500 394 894 Intrexon T1D Partners, LLC 278 32 310 Harvest start-up entities (1) 305 634 939 Other 2,769 2,134 4,903 Total $ 8,055 $ 19,426 $ 27,481 (1) For the three months ended June 30, 2016 , revenue recognized from collaborations with Harvest start-up entities include Thrive Agrobiotics, Inc.; Exotech Bio, Inc.; and Relieve Genetics, Inc. Six Months Ended June 30, 2017 Revenue Recognized From Total Upfront and Milestone Payments Research and Development Services ZIOPHARM Oncology, Inc. $ 9,684 $ 11,265 $ 20,949 Oragenics, Inc. 524 520 1,044 Fibrocell Science, Inc. 1,210 2,482 3,692 Genopaver, LLC 137 3,056 3,193 S & I Ophthalmic, LLC — 375 375 OvaXon, LLC — 1,704 1,704 Intrexon Energy Partners, LLC 1,250 5,756 7,006 Persea Bio, LLC 250 305 555 Ares Trading S.A. 3,194 2,924 6,118 Intrexon Energy Partners II, LLC 1,000 1,105 2,105 Intrexon T1D Partners, LLC 536 1,884 2,420 Harvest start-up entities (1) 1,207 6,608 7,815 Other 2,756 1,497 4,253 Total $ 21,748 $ 39,481 $ 61,229 (1) For the six months ended June 30, 2017 , revenue recognized from collaborations with Harvest start-up entities include Thrive Agrobiotics, Inc.; Exotech Bio, Inc.; Relieve Genetics, Inc.; AD Skincare, Inc.; Genten Therapeutics, Inc.; and CRS Bio, Inc. Six Months Ended June 30, 2016 Revenue Recognized From Total Upfront and Milestone Payments Research and Development Services ZIOPHARM Oncology, Inc. $ 1,844 $ 12,107 $ 13,951 Oragenics, Inc. 524 789 1,313 Fibrocell Science, Inc. 1,210 2,041 3,251 Genopaver, LLC 137 3,078 3,215 S & I Ophthalmic, LLC — 3,544 3,544 OvaXon, LLC — 1,502 1,502 Intrexon Energy Partners, LLC 1,250 6,950 8,200 Persea Bio, LLC 250 405 655 Ares Trading S.A. 3,194 1,429 4,623 Intrexon Energy Partners II, LLC 1,000 444 1,444 Intrexon T1D Partners, LLC 278 32 310 Harvest start-up entities (1) 351 1,022 1,373 Other 3,789 4,384 8,173 Total $ 13,827 $ 37,727 $ 51,554 (1) For the six months ended June 30, 2016 , revenue recognized from collaborations with Harvest start-up entities include Thrive Agrobiotics, Inc.; Exotech Bio, Inc.; and Relieve Genetics, Inc. There have been no significant changes to arrangements with our collaborators and licensees in the six months ended June 30, 2017 . See Note 5 in the Company's Annual Report on Form 10-K for the year ended December 31, 2016 for additional details of the Company's existing collaboration and licensing agreements. Deferred Revenue Deferred revenue primarily consists of consideration received for upfront and milestone payments in connection with the Company's collaborations and licensing agreements, prepayments for research and development services performed for collaborators and licensees, and prepayments for product and service revenues. Deferred revenue consists of the following: June 30, December 31, Upfront and milestone payments $ 278,262 $ 297,867 Prepaid research and development services 2,502 6,015 Prepaid product and service revenues 4,550 5,554 Other 4 706 Total $ 285,318 $ 310,142 Current portion of deferred revenue $ 47,662 $ 53,364 Long-term portion of deferred revenue 237,656 256,778 Total $ 285,318 $ 310,142 The following table summarizes the remaining balance of deferred revenue associated with upfront and milestone payments for each significant collaboration and licensing agreement. June 30, December 31, ZIOPHARM Oncology, Inc. $ 129,125 $ 138,809 Oragenics, Inc. 7,242 7,766 Fibrocell Science, Inc. 17,816 19,026 Genopaver, LLC 1,840 1,977 Intrexon Energy Partners, LLC 16,875 18,125 Persea Bio, LLC 3,750 4,000 Ares Trading S.A. 43,984 47,178 Intrexon Energy Partners II, LLC 14,833 15,833 Intrexon T1D Partners, LLC 8,678 8,653 Harvest start-up entities (1) 19,400 20,208 Other 14,719 16,292 Total $ 278,262 $ 297,867 (1) As of June 30, 2017 and December 31, 2016 , the balance of deferred revenue for collaborations with Harvest start-up entities includes Thrive Agrobiotics, Inc.; Exotech Bio, Inc.; Relieve Genetics, Inc.; AD Skincare, Inc.; Genten Therapeutics, Inc.; and CRS Bio, Inc. |