Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Schedule of earnings per share reconciliation

The following table sets forth the calculations of basic and diluted earnings per share (in thousands, except per share data):

	Three Months Ended
	March 31,
	2014		2013
Numerator:
Net income used for calculating basic and diluted earnings per share	$	37,736	$	36,675
Denominator:
Weighted average number of common shares used in the calculation of basic earnings per share	91,669		93,595
Common stock equivalents associated with stock-based compensation plans (1)	1,540		1,942
Shares used in the calculation of diluted earnings per share	93,209		95,537
Basic earnings per share	$	0.41	$	0.39
Diluted earnings per share	$	0.40	$	0.38

(1) Certain common stock equivalents were not included in the computation of diluted earnings per share because the effect would have been anti-dilutive. These shares totaled 0.2 million for both the three months ended March 31, 2014 and 2013.