A summary of the numerator and denominator of the basic and diluted earnings per common share is presented below (share amounts in thousands):


	Three Months Ended June 30, 2015							Three Months Ended June 30, 2014
	Income (Numerator)			Shares (Denominator)		Per Share Amount		Income (Numerator)			Shares (Denominator)		Per Share Amount
Net income	$	22,022						$	16,430
Less: Preferred stock dividends		—							1
Less: Income attributable to participating securities		(1,231	)						(1,203	)

Basic Earnings Per Share:
Income allocated to common stockholders		20,791			9,580	$	2.17		15,228			9,925	$	1.53

Effect of Dilutive Securities:
Stock options		—			115				—			133
Convertible preferred stock		—			—				(1	)		3
Convertible senior notes		1,121			1,650				1,081			1,649

Diluted Earnings Per Share:
Income available to common stockholders and assumed conversions	$	21,912			11,345	$	1.93	$	16,308			11,710	$	1.39


	Six Months Ended June 30, 2015							Six Months Ended June 30, 2014
	Income (Numerator)			Shares (Denominator)		Per Share Amount		Income (Numerator)			Shares (Denominator)		Per Share Amount
Net income	$	47,400						$	34,050
Less: Preferred stock dividends		—							4
Less: Income attributable to participating securities		(2,730	)						(2,386	)

Basic Earnings Per Share:
Income allocated to common stockholders		44,670			9,560	$	4.67		31,668			10,092	$	3.14

Effect of Dilutive Securities:
Stock options		—			125				—			141
Convertible preferred stock		—			—				(4	)		41
Convertible senior notes		2,231			1,649				2,152			1,649

Diluted Earnings Per Share:
Income available to common stockholders and assumed conversions	$	46,901			11,334	$	4.14	$	33,816			11,923	$	2.84