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Net Loss Per Share
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Net Loss Per Share Net Loss Per Share
The table below provides a reconciliation of the numerators and denominators of basic and diluted net loss per share for the years ended December 31, 2022, 2021 and 2020 (in thousands, except per share amounts):
Year Ended
December 31,
202220212020
Numerators:
Net loss$(9,540)$(63,993)$(468,383)
Less: Income attributable to unvested restricted stock awards— — — 
Numerator for basic net loss per share(9,540)(63,993)(468,383)
Effect of dilutive securities:
Unvested restricted stock awards— — — 
Numerator for diluted net loss per share$(9,540)$(63,993)$(468,383)
Denominators:
Weighted average number of common shares outstanding62,842 61,314 60,953 
Less: Weighted average number of unvested restricted stock awards outstanding(1,204)(1,021)(1,141)
Denominator for basic and diluted net loss per share61,638 60,293 59,812 
Net loss per share:
Basic$(0.15)$(1.06)$(7.83)
Diluted(0.15)(1.06)(7.83)
The calculation of diluted net loss per share for the years ended December 31, 2022, 2021 and 2020 excluded 277 thousand shares, 430 thousand shares and 582 thousand shares, respectively, issuable pursuant to outstanding stock options, due to their antidilutive effect. Additionally, shares issuable upon conversion of both the 2023 Notes and the 2026 Notes were excluded from the calculation of diluted net loss per share for the years ended December 31, 2022, 2021 and 2020 due to, among other factors, the Company's share price.