Basis of Presentation (Tables)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Antidilutive Securities

The following weighted average securities could potentially dilute earnings per share for the periods indicated, but were excluded from the computation of diluted net income (loss) per share, as their effect would have been antidilutive:

	Year ended December 31,
	2018	2017
Preferred stock	14,480,730	7,432,493
Warrants	—	760,000
Stock appreciation rights	922,945	576,986
Restricted stock units	847,542	560,853

Schedule of Earnings Per Share, Basic and Diluted

The following is a reconciliation of basic and diluted earnings per share:

In thousands, except shares and per-share data	Year ended December 31,
	2018			2017
Numerator - Basic
Total net income (loss) attributable to common stockholders	$	11,532		$	(47,453	)
Less: allocation to participating securities	(4,270		)	—
Net income (loss) attributable to common stockholders - basic	$	7,262		$	(47,453	)
Numerator - Diluted
Net income (loss) attributable to common stockholders - basic	$	7,262		$	(47,453	)
Unrealized gain on Warrants, net of income tax	(329		)	—
Net income (loss) attributable to common stockholders - diluted	$	6,933		$	(47,453	)
Denominator
Weighted average number of common shares - basic	24,619,730			22,252,149
Warrants converted under the Treasury Stock method	181,413			—
Weighted average number of common shares - diluted	24,801,143			22,252,149
Earnings per share
Basic	$	0.29		$	(2.13	)
Diluted	$	0.28		$	(2.13	)