Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earning Per Share and Diluted

A reconciliation of the combined Class A and Class B Common Stock numerators and denominators of the earnings per share and diluted earnings per share computations is presented below:

Years Ended December 31,(in thousands, except per share data)	2012		2011		2010
Net income	$	119,339	$	94,149	$	64,753
Weighted average shares outstanding		20,959		20,945		20,877
Effect of dilutive securities		69		48		83
Average shares outstanding including
dilutive securities		21,028		20,993		20,960
Basic earnings per share:
Class A Common Stock	$	5.71	$	4.50	$	3.11
Class B Common Stock	$	5.55	$	4.45	$	3.06
Diluted earnings per share:
Class A Common Stock	$	5.69	$	4.49	$	3.10
Class B Common Stock	$	5.53	$	4.44	$	3.04

Stock Option

Stock options excluded from the detailed earnings per share calculation because their impact was antidilutive are as follows:

Years Ended December 31,	2012		2011		2010
Antidilutive stock options		122,450		585,720		623,140
Average antidilutive stock options		120,353		585,147		621,699