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Fair Value Considerations (Tables)
3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]  
Summary of fair value financial assets measured on a recurring basis
The following table represents the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2021:
(Level 1)(Level 2)(Level 3)Total
March 31, 2021
Assets:
Money market funds$27,243 $— $— $27,243 
U.S. government securities12,093 — — 12,093 
Commercial paper— 38,969 — 38,969 
Total assets$39,336 $38,969 $— $78,305 
Liabilities
Oberland facility$— $36,686 $36,686 
Debt derivative liability— 2,519 2,519 
Total liabilities$— $— $39,205 $39,205 
(Level 1)(Level 2)(Level 3)Total
December 31, 2020
Assets:
Money market funds$23,044 $— $— $23,044 
U.S. government securities12,123 — — 12,123 
Corporate bonds— 6,408 — 6,408 
Commercial paper— 36,668 — 36,668 
Total assets$35,167 $43,076 $— $78,243 
Liabilities
Oberland facility$— $36,855 $36,855 
Debt derivative liability— 2,497 2,497 
Total liabilities$— $— $39,352 $39,352 
Schedule of valuation of the debt derivative liability
The significant inputs that are included in the valuation of the Debt Derivative Liability include:
March 31, 2021December 31, 2020
Input
Remaining term (years)6.256.50
Maturity dateJune 30, 2027June 30, 2027
Coupon rate9.50 %9.50 %
Revenue participation paymentsMaximum each yearMaximum each year
Discount rate8.87 %(1)8.70 %(1)
Probability of mandatory prepayment before 20245.0 %(1)5.0 %(1)
Estimated timing of mandatory prepayment event before 2024December 31, 2023(1)December 31, 2023(1)
Probability of mandatory prepayment 2024 or after15.0 %(1)15.0 %(1)
Estimated timing of mandatory prepayment event 2024 or afterMarch 31, 2026(1)March 31, 2026(1)
Probability of optional prepayment event5.0 %(1)5.0 %(1)
Estimated timing of optional prepayment eventDecember 31, 2025(1)December 31, 2025(1)
(1)Represents a significant unobservable input
Schedule of the fair value of instruments classified as Level 3 measurements
The following represents the rollforward of the fair value of instruments classified as Level 3 measurements for the three months ended March 31, 2021:
Quarter Ending March 31, 2021
Beginning Balance, January 1, 2021$39,352 
Change in fair value of Oberland Facility(169)
Change in fair value of debt derivative22 
Ending Balance, March 31, 2021$39,205