Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

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

The following summarizes the numerator and denominator of the basic and diluted earnings per common share computations:

	Three Months Ended March 31,
	2013		2012
	(In thousands, except per share data)
Numerator for both basic and diluted earnings per common share, net income	$	13,234	$	12,374
Denominator for basic earnings per common share, weighted average common shares outstanding	27,519		27,478
Weighted average common stock equivalents	122		61
Denominator for diluted earnings per common share	27,641		27,539
Basic earnings per common share	$	0.48	$	0.45
Diluted earnings per common share	0.48		0.45