Earnings Per Share

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Earnings Per Share

(5) Earnings Per Share

The following table details the reconciliation of basic earnings per share to diluted earnings per share:

	Three months ended				Six months ended
	June 30,				June 30,
	2014		2013		2014		2013
Numerator for basic and diluted earnings per share:
Net income	$	14,740	$	9,047	$	26,623	$	17,540
Denominator:
Weighted-average basic common shares outstanding		32,918		31,617		32,876		31,670
Assumed conversion of dilutive securities:
Stock options		2,243		2,673		2,413		2,609
Denominator for diluted earnings per share—Adjusted weighted-average shares		35,161		34,290		35,289		34,279
Earnings per common share:
Basic	$	0.45	$	0.29	$	0.81	$	0.55
Diluted	$	0.42	$	0.26	$	0.75	$	0.51

For the three and six months ended June 30, 2014, stock options representing the right to purchase common stock of approximately 669,000 shares and 485,000 shares, respectively, were not included in the computation of diluted earnings per share because their inclusion would have had an anti-dilutive effect. For the three and six months ended June 30, 2013, stock options representing the right to purchase common stock of approximately 890,000 shares and 920,000 shares, respectively, were not included in the computation of diluted earnings per share because their inclusion would have had an anti-dilutive effect.