Earnings and Dividends Per Share (Tables)

3 Months Ended

Mar. 31, 2015

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
	March 31,
	2015		2014
Net income attributable to common stockholders	$	29,683	$	23,533
BASIC:
Weighted average common shares outstanding	37,558,067		33,051,415
DILUTED:
Weighted average common shares outstanding	37,558,067		33,051,415
Stock options	68,257		33,817
Convertible subordinated debentures	18,941		—
Average dilutive common shares outstanding	37,645,265		33,085,232
Net income per common share - basic	$	.79	$	.71
Net income per common share - diluted	$	.79	$	.71
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	5,666		40,153
Regular dividends declared per common share	$	.85	$	.77