Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2012

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:

	Years Ended December 31,
	2012		2011		2010
	(In thousands, except per share data)
Numerator for both basic and diluted earnings per common share, net income	$	51,008	$	43,050	$	23,090
Denominator for basic earnings per common share, weighted average common shares outstanding	27,492		27,455		26,276
Weighted average common stock equivalents	91		51		29
Denominator for diluted earnings per common share	27,583		27,506		26,305
Net income per common share:
Basic	$	1.86	$	1.57	$	0.88
Diluted	1.85		1.57		0.88