Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the computation of basic and diluted earnings per share for the three and six months ended June 30, 2011 and 2010:

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
	(in thousands, except per share amounts)
Basic and diluted
Net income	$	11,440	$	15,426	$	35,681	$	24,858
Weighted average common shares outstanding, basic	53,441		52,819		53,343		52,658
Plus: net effect of dilutive stock options and restricted common shares	873		105		880		165
Weighted average common shares outstanding, diluted	54,314		52,924		54,223		52,823
Earnings per share, basic	$	0.21	$	0.29	$	0.67	$	0.47
Earnings per share, diluted	$	0.21	$	0.29	$	0.66	$	0.47