Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Basic and Diluted Earnings per Share

The components of basic and diluted earnings per share were as follows:

	Years Ended December 31
	2012				2011				2010
(In Thousands Except Per Share Data)	Basic		Diluted		Basic		Diluted		Basic		Diluted
Net income	$	40,212	$	40,212	$	11	$	11	$	47,513	$	47,513
Weighted-average common shares outstanding	25,447,918		25,447,918		25,878,535		25,878,535		26,318,214		26,318,214
Add dilutive effect of restricted stock awards	—		54,338		—		50,206		—		19,464
Add dilutive effect of stock options	—		2,270		—		30,108		—		—
Weighted-average common shares	25,447,918		25,504,526		25,878,535		25,958,849		26,318,214		26,337,678
Earnings per common share	$	1.58	$	1.58	$	—	$	—	$	1.81	$	1.80
Awards excluded from diluted calculation(1)	—		901,008		—		989,047		—		806,316

(1) Outstanding awards excluded from the diluted earnings per share calculation because the effect of including them would have been anti-dilutive.