Related-party Transactions	9 Months Ended
Sep. 30, 2021
Related Party Transactions [Abstract]
Related-party Transactions	15. RELATED-PARTY TRANSACTIONS The Company was party to a management agreement for professional services provided by a related party, Paragon Biosciences, LLC (“Paragon”). The related party is an entity that shares common ownership with the Company. In addition, the Chairman of the Company’s board of directors was the President and owner of the entity. The Company incurred $71 and $3,628 for the three months ended September 30, 2021 and 2020, respectively, and $213 and $7,101 for the nine months ended September 30, 2021 and 2020, respectively, in management fee expense and other expenses to this related party, which are included in general and administrative expense in the unaudited condensed consolidated statements of operations and comprehensive loss. The Company terminated the Management Services Agreement upon the consummation of its IPO. The Company is also party to a right of use agreement with the related party whereby it has access to and the right to use certain office space leased by the related party in Chicago, Illinois. In addition, the Company had participated in certain transactions with separate related parties that also share common ownership with the Company, primarily related to combined employee health plans. In August 2021, the Company paid a $2,300 advisory fee to Paragon in connection with the Blackstone Credit Agreement. $2,000 of this payment was recorded in debt issuance costs as a component of long-term debt, net and $300 was recorded in common stock issuance costs as a component of additional paid-in capital, within the unaudited condensed consolidated balance sheet as of September 30, 2021. As of September 30, 2021 and December 31, 2020, the amount included in prepaid expenses and other assets was $0 and $1, respectively, and there were no amounts due to related parties included in current liabilities.

Related-party Transactions

9 Months Ended

Sep. 30, 2021

15. RELATED-PARTY TRANSACTIONS

The Company was party to a management agreement for professional services provided by a related party, Paragon Biosciences, LLC (“Paragon”). The related party is an entity that shares common ownership with the Company. In addition, the Chairman of the Company’s board of directors was the President and owner of the entity. The Company incurred $71 and $3,628 for the three months ended September 30, 2021 and 2020, respectively, and $213 and $7,101 for the nine months ended September 30, 2021 and 2020, respectively, in management fee expense and other expenses to this related party, which are included in general and administrative expense in the unaudited condensed consolidated statements of operations and comprehensive loss. The Company terminated the Management Services Agreement upon the consummation of its IPO. The Company is also party to a right of use agreement with the related party whereby it has access to and the right to use certain office space leased by the related party in Chicago, Illinois. In addition, the Company had participated in certain transactions with separate related parties that also share common ownership with the Company, primarily related to combined employee health plans. In August 2021, the Company paid a $2,300 advisory fee to Paragon in connection with the Blackstone Credit Agreement. $2,000 of this payment was recorded in debt issuance costs as a component of long-term debt, net and $300 was recorded in common stock issuance costs as a component of additional paid-in capital, within the unaudited condensed consolidated balance sheet as of September 30, 2021. As of September 30, 2021 and December 31, 2020, the amount included in prepaid expenses and other assets was $0 and $1, respectively, and there were no amounts due to related parties included in current liabilities.