Earnings and Dividends Per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table summarizes the average number of common shares and the net income used in the calculation of basic and diluted earnings per common share (in thousands, except share and per share amounts):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2016		2015		2016		2015
Net income attributable to common stockholders	$	44,595	$	31,182	$	77,320	$	60,866
BASIC:
Weighted average common shares outstanding	38,520,221		37,566,221		38,460,934		37,562,144
DILUTED:
Weighted average common shares outstanding	38,520,221		37,566,221		38,460,934		37,562,144
Stock options	41,163		40,896		27,154		54,577
Convertible subordinated debentures	—		—		—		9,471
Average dilutive common shares outstanding	38,561,384		37,607,117		38,488,088		37,626,192
Net income per common share - basic	$	1.16	$	.83	$	2.01	$	1.62
Net income per common share - diluted	$	1.16	$	.83	$	2.01	$	1.62
Incremental shares excluded since anti-dilutive:
Net share effect of stock options with an exercise price in excess of the average market price for our common shares	41,163		51,643		23,367		22,401
Regular dividends declared per common share	$	.90	$	.85	$	1.80	$	1.70