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Convertible Senior Notes (Tables)
3 Months Ended
Mar. 31, 2021
Debt Instrument [Line Items]  
Summary of convertible notes outstanding

Principal

$

143,750

Less: unamortized issuance costs

(4,464)

Net carrying amount

$

139,286

Schedule of total interest expense recognized related to the convertible notes

Three months ended March 31, 

2021

2020

Contractual interest expense

$

943

$

503

Amortization of debt discount

818

Amortization of debt issuance costs

222

65

Total interest expense

$

1,165

$

1,386

Convertible senior notes  
Debt Instrument [Line Items]  
Schedule of principal repayments of debt

Years ended December 31,

Future Minimum Payments

2021

$

1,887

2022

3,773

2023

3,773

2024

3,773

2025

3,773

Thereafter

145,638

Total minimum payments

$

162,617

Less: interest

(18,867)

Less: unamortized issuance costs

(4,464)

Convertible senior notes

$

139,286