Note 21. Net Income Per Share

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Net Income per Share Disclosure [Text Block]

21. Net Income (Loss) per Share

Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding for the period. Diluted net income (loss) per share is computed giving effect to all potential dilutive common stock, including employee stock options, restricted and performance stock units, and stock purchase plan shares, unless there is a net loss for the period. In computing diluted earnings per share, we utilize the treasury stock method.

The calculation of basic and diluted net income (loss) per share for the years ended December 31, 2014, 2013, and 2012 was as follows (in thousands, except per share amounts):

	2014		2013		2012
Basic net income (loss) per share
Numerator:
Net income (loss)	$	396,918	$	353,038	$	(96,338	)
Denominator:
Weighted-average common stock outstanding	100,048		93,697		86,860
Diluted net income (loss) per share
Denominator:
Weighted-average common stock outstanding	100,048		93,697		86,860
Effect of stock options, restricted and performance stock units, and stock purchase plan shares	1,595		1,771		0
Weighted-average shares used in computing diluted net income (loss) per share	101,643		95,468		86,860

	2014		2013		2012
Per share information - basic:
Net income (loss) per share	$	3.97	$	3.77	$	(1.11	)
Per share information - diluted:
Net income (loss) per share	$	3.91	$	3.70	$	(1.11	)

The following number of outstanding employee stock options, restricted and performance stock units, and stock purchase plan shares were excluded from the computation of diluted net income (loss) per share for the years ended December 31, 2014, 2013, and 2012 as they would have had an anti-dilutive effect (in thousands):

	2014	2013	2012
Anti-dilutive shares	70	86	1,497