Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2015

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:

Year Ended December 31 (in thousands except per share data)	2015		2014		2013
Numerator:
Net income	$	46,432	$	43,251	$	45,172
Denominator:
Basic earnings per share:
Weighted average shares		17,431		17,326		17,158
Diluted earnings per share:
Dilutive effect of equity grants		52		71		82
Adjusted weighted average shares		17,483		17,397		17,240
Earnings per share:
Basic earnings per share	$	2.66	$	2.50	$	2.63
Diluted earnings per share		2.66		2.49		2.62