Net Income (Loss) Per Common Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Summary of Net Income (Loss) Per Share

The following table summarizes the computation of basic and diluted net loss per common share.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Numerator:
Loss from continuing operations	$	(5,391)	$	(17,566)	$	(10,304)	$	(125,643)
Less: Preferred stock cumulative dividends and deemed dividends	(2,211)		(3,043)		(16,740)		(5,994)
Numerator for basic and diluted loss from continuing operations per common share (1)	(7,602)		(20,609)		(27,044)		(131,637)
Loss from discontinued operations, net of tax (Note 2)	—		(4,182)		—		(144,296)
Numerator for basic and diluted undistributed net loss per common share (1)	$	(7,602)	$	(24,791)	$	(27,044)	$	(275,933)
Denominator:
Weighted average common shares outstanding	43,067		42,753		42,952		42,671
Adjustment for unvested restricted common stock	(524)		(556)		(450)		(517)
Adjustment for 2021 Warrants outstanding (2)	1,897		—		1,059		—
Shares used to calculate income (loss) per share, basic and diluted	44,440		42,197		43,561		42,154
Per common share net loss:
Basic loss from continuing operations per common share	$	(0.17)	$	(0.49)	$	(0.62)	$	(3.12)
Basic loss from discontinued operations per common share	—		(0.10)		—		(3.43)
Basic net loss per common share	$	(0.17)	$	(0.59)	$	(0.62)	$	(6.55)
Diluted loss from continuing operations per common share	$	(0.17)	$	(0.49)	$	(0.62)	$	(3.12)
Diluted loss from discontinued operations per common share	—		(0.10)		—		(3.43)
Diluted net loss per common share	$	(0.17)	$	(0.59)	$	(0.62)	$	(6.55)
Cash dividends declared per common share	$	—	$	—	$	—	$	—

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(1) Preferred Stock does not participate in losses.

(2) Weighted average 2021 Warrants outstanding are included in shares outstanding for calculation of basic earnings per share because they are exercisable at an exercise price of $0.01 per share, subject to certain adjustments (see Note 17).

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table presents securities that could be potentially dilutive in the future that were excluded from the calculation of diluted net loss per common share because they had an anti-dilutive effect.

	Three Months Ended June 30,		Six Months Ended June 30,
	2021	2020	2021	2020
Options	825	890	843	890
2019 Warrants	1,500	1,500	1,500	1,500
Series B Preferred Stock, as-converted	—	25,278	—	25,278
	2,325	27,668	2,343	27,668