Stock-Based Compensation (Narrative) (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Proceeds from stock option exercises	$ 10,092	$ 7,239
New shares issued related to stock option exercises from available authorized shares	190,321
Shares issued from available treasury stock	7,640

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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+ Details