Net Income (Loss) Per Common Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Computation of Basic and Diluted EPS

The following table illustrates the computation of basic and diluted EPS (in thousands, except per share amounts):

	Year Ended December 31,
	2021			2020			2019
Numerator
Income (loss) from continuing operations	$	(405,484	)	$	(63,208	)	$	(114,455	)
Noncontrolling interests’ share in (earnings) loss from    continuing operations		300			—			—
Net income (loss) attributable to common stockholders    before discontinued operations		(405,184	)		(63,208	)		(114,455	)
Income (loss) from discontinued operations		(1,303	)		3,156			(168,285	)
Noncontrolling interests’ share in (earnings) loss from    discontinued operations		—			—			152
Net income (loss) attributable to common stockholders	$	(406,487	)	$	(60,052	)	$	(282,588	)
Denominator
Weighted average shares outstanding, basic and diluted		372,931			323,462			294,738
Net income (loss) per share attributable to    common stockholders
Net income (loss) per common share from continuing operations,    basic and diluted	$	(1.09	)	$	(0.20	)	$	(0.39	)
Net income (loss) per common share from discontinued    operations, basic and diluted	$	—		$	0.01		$	(0.57	)

Summary of Weighted-average Potential Shares of Common Stock Were Excluded From Calculation of Diluted Net Income (Loss) Per Share Attributable to Common Stockholders

The following table provides the potential shares of common stock that were excluded from the calculation of diluted net income (loss) per share attributable to common stockholders because their effect would have been anti-dilutive (in thousands):

	December 31,
	2021		2020		2019
Stock options - service only condition		17,201		23,646		23,080
Stock options - market and performance condition(1)		14,428		17,675		15,090
Restricted stock units		894		110		185

(1)Market and performance conditions were satisfied during 2021.