Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2012

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 (EPS) for the three months ended March 31, 2012 and 2011 (in thousands, except per share amounts):

	Three Months Ended
	March 31,
	2012			2011
Numerators:
Income from continuing operations, net of tax	$	22,244		$	22,122
Loss from discontinued operations, net of tax	(3		)	—
Net income	$	22,241		$	22,122
Denominators:
Weighted average Class A common shares outstanding - Basic	40,360			39,484
Weighted average Class B common shares outstanding	2,165			2,405
Dilutive effect of employee stock grants	556			656
Weighted average shares - Diluted	43,081			42,545
Basic:
Earnings per common share from continuing operations	$	0.55		$	0.56
Loss per common share from discontinued operations	—			—
Earnings per common share	$	0.55		$	0.56
Diluted:
Earnings per common share from continuing operations	$	0.52		$	0.52
Loss per common share from discontinued operations	—			—
Earnings per common share	$	0.52		$	0.52

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following total number of Class A common stock issuable under the assumed exercise of stock options computed based on the treasury stock method were excluded from the calculation of diluted earnings per common share, as the effect of including these shares would have been anti-dilutive (in thousands):

	Three Months Ended
	March 31,
	2012	2011
Anti-dilutive shares	200	48