Equity Investment in PACT Pharma	12 Months Ended
Dec. 31, 2020
Equity Method Investment [Abstract]
Equity Investment in PACT Pharma	Note 5: Equity Investment in PACT Pharma The Company owns approximately 3.6 million shares of common stock, 1.0 million shares of Series A preferred stock, and warrants to purchase additional stock of PACT Pharma, Inc. (PACT Pharma), a privately funded, early-stage biopharmaceutical company focused on adoptive cell therapy. This interest in PACT Pharma is accounted for as an equity method investment, and as a result the Company records its share of PACT Pharma’s operating results in interest and other income, net, in its condensed consolidated statements of operations and comprehensive income (loss). The investment balance was zero at December 31, 2020 and December 31, 2019. Since the Company has no obligation to provide cash financing to PACT Pharma, the Company is not required to record losses beyond the carrying amount of the investment. In January and June 2020, PACT Pharma issued shares in its Series C and Series C-1 preferred stock financings. The Company did not participate in these financings. The decrease in the Company’s equity ownership percentage and an increase in PACT Pharma’s estimated fair value per share resulted in gains on dilution totaling $2.0 million during the year ended December 31, 2020. After applying $1.4 million in losses accumulated in prior periods when the equity investment balance was zero, the Company recorded a gain of $0.6 million for the year ended December 31, 2020. There were no gains recorded by the Company for the year ended December 31, 2019. The Company’s share of PACT Pharma’s losses for the year ended December 31, 2020 exceeded gains for the same period. The Company recorded $0.6 million and $1.2 million for its share of PACT Pharma’s operating losses for the years ended December 31, 2020 and 2019, respectively. The unrecognized equity method losses in excess of the Company’s investment was $1.3 million as of December 31, 2020. For the years ended December 31, 2020 and 2019, the Company determined the fair value of the warrants to be insignificant to the consolidated financial statements.

Equity Investment in PACT Pharma

12 Months Ended

Dec. 31, 2020

Note 5: Equity Investment in PACT Pharma

The Company owns approximately 3.6 million shares of common stock, 1.0 million shares of Series A preferred stock, and warrants to purchase additional stock of PACT Pharma, Inc. (PACT Pharma), a privately funded, early-stage biopharmaceutical company focused on adoptive cell therapy. This interest in PACT Pharma is accounted for as an equity method investment, and as a result the Company records its share of PACT Pharma’s operating results in interest and other income, net, in its condensed consolidated statements of operations and comprehensive income (loss). The investment balance was zero at December 31, 2020 and December 31, 2019. Since the Company has no obligation to provide cash financing to PACT Pharma, the Company is not required to record losses beyond the carrying amount of the investment.

In January and June 2020, PACT Pharma issued shares in its Series C and Series C-1 preferred stock financings. The Company did not participate in these financings. The decrease in the Company’s equity ownership percentage and an increase in PACT Pharma’s estimated fair value per share resulted in gains on dilution totaling $2.0 million during the year ended December 31, 2020. After applying $1.4 million in losses accumulated in prior periods when the equity investment balance was zero, the Company recorded a gain of $0.6 million for the year ended December 31, 2020. There were no gains recorded by the Company for the year ended December 31, 2019.

The Company’s share of PACT Pharma’s losses for the year ended December 31, 2020 exceeded gains for the same period. The Company recorded $0.6 million and $1.2 million for its share of PACT Pharma’s operating losses for the years ended December 31, 2020 and 2019, respectively. The unrecognized equity method losses in excess of the Company’s investment was $1.3 million as of December 31, 2020.

For the years ended December 31, 2020 and 2019, the Company determined the fair value of the warrants to be insignificant to the consolidated financial statements.