Shareholders' Equity Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2012

Stockholders' Equity Note [Abstract]

Common stock and additional paid-in capital activity

The following table summarizes the common stock and additional paid-in capital activity during the nine months ended September 30, 2012 (in thousands):

Common stock and additional paid-in capital, December 31, 2011	$	352,157
Income tax benefit of common stock options exercised	129
Common stock issued pursuant to stock-based compensation plans, net	3,654
Stock-based compensation expense	19,692
Repurchase of common stock	(129,010		)
Common stock and additional paid in capital, September 30, 2012	$	246,622