Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Computation of Net Income Per Share

The computation of earnings per share is as follows:

	Year ended December 31,
	2013		2012		2011
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	112,403	$	17,152	$	226,126
Shares used in computation:
Weighted-average common shares outstanding	58,198		55,521		52,847
Basic earnings per share	$	1.93	$	0.31	$	4.28
Diluted earnings per share:
Net income	$	112,403	$	17,152	$	226,126
Convertible Notes interest expense, net of tax	49		195		17
Numerator for diluted earnings per share	112,452		17,347		226,143
Shares used in computation:
Weighted-average common shares outstanding	58,198		55,521		52,847
Convertible Notes shares	715		2,331		217
Employee stock options	1,848		1,052		1,305
Weighted-average number of shares	60,761		58,904		54,369
Diluted earnings per share	$	1.85	$	0.29	$	4.16

Summary of Potential Common Shares Excluded from Diluted Calculation

The following table summarizes the potential common shares excluded from the diluted calculation:

	Year ended December 31,
	2013	2012	2011
	(in thousands)
Employee stock options	198	1,207	225