Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Dilutive weighted average securities were excluded from the calculation of diluted net income (loss) per share attributable to common stockholders during the periods

The following potentially dilutive weighted average securities were excluded from the calculation of diluted net income per share attributable to common stockholders during the periods presented as the effect was anti-dilutive:

	Year Ended December 31,
	2015	2014	2013
Options to purchase common stock	87,026	87,026	87,026
Stock appreciation rights	2,072,130	1,400,824	1,030,926
Warrants to purchase common stock	—	17,916	—
Convertible notes	10,838,218	6,295,075	—
Total	12,997,374	7,800,841	1,117,952

Calculation of diluted net income per share

The following table presents the calculation of diluted net income per share for the years ended December 31, 2015, 2014 and 2013 (in thousands, except share and per share data):

	2015			2014			2013
Net income (loss) attributable to the Company's common stockholders - Basic	$	(151,392	)	$	81,620		$	165,254
Plus: distributed dividends to Preferred Stockholders	—			40			2,055
Plus (less): effect of participating securities	—			(418		)	(2,051		)
Net income (loss) attributable to the Company's common stockholders - Diluted	$	(151,392	)	$	81,242		$	165,258
Shares:
Weighted-average shares outstanding - Basic	43,958,803			40,740,411			33,045,164
Adjustment to reflect stock appreciation right conversions	—			9,502			7,065
Adjustment to reflect warrants to purchase common stock	—			—			650
Weighted-average shares outstanding - Diluted	43,958,803			40,749,913			33,052,879
Net income (loss) per share attributable to common stockholders - Diluted	$	(3.44	)	$	1.99		$	5.00