Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

A summary of information used to compute basic and diluted net earnings per share is shown below (in thousands, except per share data):

	Three Months Ended March 31,
	2015		2014
Net earnings (loss) for basic earnings per share	$	14,284	$	(15,674	)
Interest on convertible senior notes	1,884		—
Earnings (loss) used in calculating diluted earnings per share	$	16,168	$	(15,674	)
Weighted-average common shares outstanding	117,737		116,134
Dilutive effect of common shares equivalents	28,905		—
Shares used in calculating diluted earnings per share	146,642		116,134
Net earnings (loss) per basic share	$	0.12	$	(0.13	)
Net earnings (loss) per diluted share	$	0.11	$	(0.13	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Common stock equivalents, that could potentially reduce net earnings per common share in the future that were not included in the determination of diluted earnings (loss) per common share as their effects were antidilutive are as follows (in thousands):

	Three Months Ended March 31,
	2015	2014
Shares underlying Convertible Senior Notes	—	28,088
Options to purchase common stock	9,032	14,608
Restricted stock units not yet vested and released	41	2,893
Warrants to purchase common stock	200	250
Total	9,273	45,839