Earnings per Share (Tables)

9 Months Ended

Sep. 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 (EPS) for the three and nine months ended September 30, 2011 and 2010 (in thousands, except per share amounts):

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2011			2010		2011			2010
Numerators:
Income from continuing operations, net of tax	$	32,952		$	22,050	$	86,219		$	58,717
(Loss)/income from discontinued operations, net of tax	(10		)	2,745		(10		)	2,673
Net income	$	32,942		$	24,795	$	86,209		$	61,390
Denominators:
Weighted average Class A common shares outstanding - Basic	40,078			38,940		39,825			38,774
Weighted average Class B common shares outstanding	2,206			2,463		2,276			2,489
Dilutive effect of employee stock grants	537			491		610			412
Weighted average shares - Diluted	42,821			41,894		42,711			41,675
Basic:
Earnings per common share from continuing operations	$	0.82		$	0.57	$	2.16		$	1.51
(Loss)/earnings per common share from discontinued operations	—			0.07		—			0.07
Earnings per common share	$	0.82		$	0.64	$	2.16		$	1.58
Diluted:
Earnings per common share from continuing operations	$	0.77		$	0.53	$	2.02		$	1.41
(Loss)/earnings per common share from discontinued operations	—			0.07		—			0.06
Earnings per common share	$	0.77		$	0.59	$	2.02		$	1.47

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		Nine Months Ended
	September 30,		September 30,
	2011	2010	2011	2010
Anti-dilutive shares	156	289	108	621