Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2016

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,
	2015						2016
	Income		Weighted Average Shares		Per- Share		Income		Weighted Average Shares		Per- Share
Earnings per share – basic
Net income available to common stockholders	$	45,845		18,559	$	2.47	$	30,612		16,044	$	1.91
Effect of dilutive securities:
Convertible senior notes		1,779		23,369				1,840		23,081
Unvested performance stock grants		—		409				—		164
Unvested restricted stock grants		—		225				—		215
Earnings per share – diluted
Net income available to common stockholders plus assumed exercises and conversion	$	47,624		42,562	$	1.12	$	32,452		39,504	$	0.82

	Nine Months Ended September 30,
	2015						2016
	Income		Weighted Average Shares		Per- Share		Income		Weighted Average Shares		Per- Share
Earnings per share – basic
Net income available to common stockholders	$	32,584		18,929	$	1.72	$	8,828		16,561	$	0.53
Effect of dilutive securities:
Convertible senior notes		5,516		23,369				5,557		23,123
Unvested performance stock grants		—		284				—		115
Unvested restricted stock grants		—		155				—		117
Earnings per share – diluted
Net income available to common stockholders plus assumed exercises and conversion	$	38,100		42,737	$	0.89	$	14,385		39,916	$	0.36