Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Stockholders' Equity

Components of basic and diluted earnings per share

	2012		2011		2010
	(in thousands, except per share amounts)
Net income from continuing operations	$	192,528		172,205		153,428
Weighted average shares outstanding — basic		85,726		85,783		85,618
Dilutive potential shares from stock options		2		10		29
Weighted average shares outstanding — diluted		85,728		85,793		85,647
Earnings per share from continuing operations, basic and diluted	$	2.25		2.01		1.79