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Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2012

Basis of Presentation

Reconciliation of basic earnings per share ("EPS") to diluted EPS

		Three Months Ended						Six Months Ended
		June 30,						June 30,
(in thousands, except per share amounts)		2012			2011			2012			2011
Net income available to common stockholders		$	15,859		$	19,493		$	23,060		$	26,571
Basic weighted average shares outstanding		48,340			49,404			48,307			49,753
Dilutive effect of potential common stock equivalents — stock options		79			52			71			56
Diluted weighted average shares outstanding		48,419			49,456			48,378			49,809
Earnings per common share:
Basic		$	0.33		$	0.39		$	0.48		$	0.53
Diluted		0.33			0.39			0.48			0.53
Potentially dilutive securities excluded from earnings per diluted share because their effect is anti-dilutive		1,711			1,743			1,711			1,743

Stock option and restricted stock unit activity of the entity

		Three Months Ended						Six Months Ended
		June 30,						June 30,
(in thousands)		2012			2011			2012			2011
Stock-based compensation expense recognized in operating expenses		$	2,052		$	845		$	5,120		$	2,293
Tax benefit of stock-based compensation expense in provision for income taxes		705			297			1,771			818
Stock-based compensation expense, net of tax		$	1,347		$	548		$	3,349		$	1,475
Fair value of shares vested		$	1,895		$	837		$	5,005		$	2,118
Proceeds to the Company from the exercise of stock-based compensation		$	225		$	—		$	1,983		$	154
Tax effect from exercise of stock-based compensation, including shortfall tax benefits		$	(54	)	$	—		$	(56	)	$	(39	)

		At June 30,
		2012			2011
Stock-based compensation cost capitalized in inventory		$	229		$	108

Schedule of effective tax rates and income tax expense

		Three Months Ended						Six Months Ended
(in thousands, except		June 30,						June 30,
percentage amounts)		2012			2011			2012			2011
Effective tax rate		41.7		%	37.6		%	43.5		%	39.0		%
Provision for income taxes		$	11,347		$	11,754		$	17,719		$	17,016

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- Definition

Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Topic 718

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- Definition

Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Topic 260

-SubTopic 10

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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