Note R - Stock-Based Compensation (Detail) - (Table 5) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
Sep. 30, 2011
Outstanding at January 1, 2011	2,703,000
Outstanding at January 1, 2011 (in Dollars per share)	$ 14.08
Granted	582,000
Granted (in Dollars per share)	$ 29.80
Exercised	(357,000)
Exercised (in Dollars per share)	$ 11.21
Cancelled/Forfeited	(167,000)
Cancelled/Forfeited (in Dollars per share)	$ 19.30
Outstanding at September 30, 2011	2,761,000
Outstanding at September 30, 2011 (in Dollars per share)	$ 17.45
Outstanding at September 30, 2011	4.8
Outstanding at September 30, 2011 (in Dollars)	$ 35,899
Exercisable at September 30, 2011	813,000
Exercisable at September 30, 2011 (in Dollars per share)	$ 14.25
Exercisable at September 30, 2011	4.2
Exercisable at September 30, 2011 (in Dollars)	$ 13,101

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

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Number of share options (or share units) exercised during the current period.

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