Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

The following table sets forth the computation of basic and diluted earnings per share:

	Three Months Ended
	March 31
(in thousands except per share data)	2013		2012
Numerator:
Net income	$	11,820	$	11,869
Denominator:
Basic earnings per share:
Weighted average shares		15,539		15,407
Diluted earnings per share:
Effect of dilutive stock options		53		49
Adjusted weighted average shares		15,592		15,456
Earnings per share:
Basic earnings per share	$	0.76	$	0.77
Diluted earnings per share		0.76		0.77