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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2015

Reconciliation of Weighted Average Shares Used in Computation of Earnings Per Share

The following table is a reconciliation of the weighted average shares used in the computation of earnings per share for the periods presented (in thousands, except per share data):

		Three Months Ended September 30,
		2014												2015
		Income				Weighted Average Shares				Per-Share				Income				Weighted Average Shares				Per- Share
Earnings per share – basic
Net income available to common stockholders		$	44,069				18,897			$	2.33			$	45,845				18,559			$	2.47
Effect of dilutive securities:
Convertible senior notes			2,442				26,055								1,779				23,369
Unvested performance stock grants			—				—								—				409
Unvested restricted stock grants			—				200								—				225

Earnings per share – diluted
Net income available to common stockholders plus assumed exercises and conversion		$	46,511				45,152			$	1.03			$	47,624				42,562			$	1.12

		Nine Months Ended September 30,
		2014												2015
		Income				Weighted Average Shares				Per-Share				Income				Weighted Average Shares				Per- Share
Earnings per share – basic
Net income available to common stockholders		$	18,711				20,721			$	0.90			$	32,584				18,929			$	1.72
Effect of dilutive securities:
Convertible senior notes			5,456				19,063								5,516				23,369
Unvested performance stock grants			—				—								—				284
Unvested restricted stock grants			—				167								—				155
Earnings per share – diluted
Net income available to common stockholders plus assumed exercises and conversion		$	24,167				39,951			$	0.61			$	38,100				42,737			$	0.89