Debt Facility	3 Months Ended
Mar. 31, 2020
Debt Disclosure [Abstract]
Debt Facility	10. Debt Facility On November 2, 2018, the Company entered into a loan and security agreement, or the Loan Agreement, with Solar Capital, as collateral agent and lender, and the other lenders named therein (Solar Capital and the other lenders collectively, the Lenders). On August 30, 2019, the Company entered into a payoff letter with the Lenders, pursuant to which the Company agreed to pay off and thereby terminate the Loan Agreement. Pursuant to the payoff letter, the Company paid a total of $30.7 million to the Lenders, representing the principal balance, accrued interest outstanding and a portion of the final fee under the Loan Agreement in repayment of the Company’s outstanding obligations under the Loan Agreement. The Company recorded a loss from debt extinguishment of $1.6 million as the difference between the net carrying amount of the indebtedness under the Loan Agreement and the amount paid. In connection with the Loan Agreement and the funding of the initial loan facility, the Company issued to the Lenders warrants to purchase an aggregate of 20,718 shares of the Company’s common stock, equal to 3.00% of the term loan funded divided by the exercise price of $43.44. The warrants will terminate 10 years from the date of its original issuance. The warrants were equity classified with a fair value of $0.8 million at issuance and recorded to additional paid in capital. The Company recorded interest expense related to the loan facility of $1.0 million for the three months ended March 31, 2019.

Debt Facility

3 Months Ended

Mar. 31, 2020

10. Debt Facility

On November 2, 2018, the Company entered into a loan and security agreement, or the Loan Agreement, with Solar Capital, as collateral agent and lender, and the other lenders named therein (Solar Capital and the other lenders collectively, the Lenders). On August 30, 2019, the Company entered into a payoff letter with the Lenders, pursuant to which the Company agreed to pay off and thereby terminate the Loan Agreement. Pursuant to the payoff letter, the Company paid a total of $30.7 million to the Lenders, representing the principal balance, accrued interest outstanding and a portion of the final fee under the Loan Agreement in repayment of the Company’s outstanding obligations under the Loan Agreement. The Company recorded a loss from debt extinguishment of $1.6 million as the difference between the net carrying amount of the indebtedness under the Loan Agreement and the amount paid.

In connection with the Loan Agreement and the funding of the initial loan facility, the Company issued to the Lenders warrants to purchase an aggregate of 20,718 shares of the Company’s common stock, equal to 3.00% of the term loan funded divided by the exercise price of $43.44. The warrants will terminate 10 years from the date of its original issuance. The warrants were equity classified with a fair value of $0.8 million at issuance and recorded to additional paid in capital.

The Company recorded interest expense related to the loan facility of $1.0 million for the three months ended March 31, 2019.