Net Loss per Share Attributable to Common Stock (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

The calculation of basic and diluted net loss per share attributable to common stock was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Numerator:
Net loss	$	(27,878)	$	(6,611)	$	(63,662)	$	(66,728)
Dividends on convertible preferred stock	(1,878)		(1,284)		(4,214)		(1,284)
Net loss attributable to common stock—basic and diluted	$	(29,756)	$	(7,895)	$	(67,876)	$	(68,012)
Denominator:
Weighted-average shares—basic and diluted(1)	104,391,337		98,785,318		103,912,212		96,114,012
Net loss per share attributable to common stock—basic and diluted	$	(0.29)	$	(0.08)	$	(0.65)	$	(0.71)

(1) Basic and diluted weighted-average shares outstanding include (i) common stock earned but not yet issued related to share-based dividends on our convertible preferred stock, and (ii) restricted stock units that have vested but whose settlement into common stock were deferred at the option of certain non-employee directors.

Summary of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following outstanding shares of common stock equivalents were excluded from the computation of the diluted net loss per share for the periods presented because their effect would have been anti-dilutive:

	Three Months Ended June 30,		Six Months Ended June 30,
	2021	2020	2021	2020
2023 notes as if converted(1)	777,021	—	777,021	—
2025 notes as if converted	9,119,960	—	9,119,960	—
2027 notes as if converted	6,147,900	—	6,147,900	—
Convertible preferred stock as if converted	2,040,000	2,040,000	2,040,000	2,040,000
Stock options outstanding(2)	4,639,132	6,493,269	4,639,132	6,493,269
Restricted stock units outstanding(2)(3)	3,671,589	4,339,964	3,671,589	4,339,964
Total	26,395,602	12,873,233	26,395,602	12,873,233

(1) Includes $226 principal amount of 2023 notes with respect to which we received conversion requests by June 30, 2021. See Note 1.

(2) Excludes 331,759 incremental PSUs and 150,000 incremental PSOs that could vest, assuming applicable performance criteria and market conditions are achieved at 200% of target, which is the maximum achievement level. See Note 13 for additional information regarding PSUs and PSOs.

(3) Excludes 27,729 restricted stock units that have vested but whose settlement into common stock were deferred at the option of certain non-employee directors as of June 30, 2021.