Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Summary of Net Income (Loss) Per Share

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

	Year Ended December 31,
	2019			2018			2017
Numerator:
Income (loss) from continuing operations	$	(46,741	)	$	(262,987	)	$	24,549
Income from discontinued operations, net of tax	—			—			137,688
Net income (loss)	(46,741		)	(262,987		)	162,237
Less: Preferred Stock cumulative dividends and deemed dividends	(642		)	—			—
Numerator for basic and diluted net income (loss) per common share (1)	$	(47,383	)	$	(262,987	)	$	162,237
Denominator:
Weighted average common shares outstanding	42,030			31,678			27,433
Effect of dilutive stock options	—			—			322
Diluted shares outstanding	42,030			31,678			27,755
Basic income (loss) from continuing operations per common share	$	(1.13	)	$	(8.30	)	$	0.89
Basic income from discontinued operations per common share	—			—			5.02
Basic net income (loss) per common share	$	(1.13	)	$	(8.30	)	$	5.91
Diluted income (loss) from continuing operations per common share	$	(1.13	)	$	(8.30	)	$	0.89
Diluted income from discontinued operations per common share	—			—			4.96
Diluted net income (loss) per common share	$	(1.13	)	$	(8.30	)	$	5.85
Cash dividends declared per common share	$	0.21		$	0.28		$	0.28

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following table presents the number of potentially dilutive securities that were excluded from the calculation of diluted income (loss) from continuing operations per common share and diluted net income (loss) per common share because they had an anti-dilutive effect.

	Year Ended December 31,
	2019	2018	2017
Options	577	428	400
Warrants	1,500	—	—
Preferred Stock, as-converted	12,976	—	—
	15,053	428	400