Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Numerator and denominator of the basic and diluted earnings per common share computations

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
	(In thousands, except per share data)
Numerator for both basic and diluted earnings per common share, net income	$	13,106	$	11,625	$	39,346	$	31,846
Denominator for basic earnings per common share, weighted average common shares outstanding	27,498		27,457		27,490		27,454
Weighted average common stock equivalents	90		47		78		40
Denominator for diluted earnings per common share	27,588		27,504		27,568		27,494
Basic earnings per common share	$	0.48	$	0.42	$	1.43	$	1.16
Diluted earnings per common share	0.48		0.42		1.43		1.16