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Note I - Stock-Based Compensation (Detail) - (Table 5) (USD $) | 12 Months Ended
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Dec. 31, 2011
Exercise Price $5.25 to $11.85 [Member] |
Number Outstanding Options Outstanding (in Shares) | 1,050,000
Weighted Average Remaining Contractual Life Options Outstanding | 3.8
Weighted Average Exercise Price Options Outstanding | $ 8.27
Number Exercisable Options Exercisable (in Shares) | 436,000
Weighted Average Exercise Price Options Exercisable | $ 8.11
Exercise Price $11.86 to $18.45 [Member] |
Number Outstanding Options Outstanding (in Shares) | 442,000
Weighted Average Remaining Contractual Life Options Outstanding | 4.6
Weighted Average Exercise Price Options Outstanding | $ 15.54
Number Exercisable Options Exercisable (in Shares) | 152,000
Weighted Average Exercise Price Options Exercisable | $ 15.32
Exercise Price $18.46 to $25.05 [Member] |
Number Outstanding Options Outstanding (in Shares) | 529,000
Weighted Average Remaining Contractual Life Options Outstanding | 4.9
Weighted Average Exercise Price Options Outstanding | $ 23.27
Number Exercisable Options Exercisable (in Shares) | 184,000
Weighted Average Exercise Price Options Exercisable | $ 23.24
Exercise Price $25.06 to $31.65 [Member] |
Number Outstanding Options Outstanding (in Shares) | 500,000
Weighted Average Remaining Contractual Life Options Outstanding | 6.0
Weighted Average Exercise Price Options Outstanding | $ 27.43
Number Exercisable Options Exercisable (in Shares) | 17,000
Weighted Average Exercise Price Options Exercisable | $ 26.95
Exercise Price $31.66 to $38.25 [Member] |
Number Outstanding Options Outstanding (in Shares) | 182,000
Weighted Average Remaining Contractual Life Options Outstanding | 4.6
Weighted Average Exercise Price Options Outstanding | $ 35.81
Number Exercisable Options Exercisable (in Shares) | 75,000
Weighted Average Exercise Price Options Exercisable | $ 35.62
Total [Member] |
Number Outstanding Options Outstanding (in Shares) | 2,703,000
Weighted Average Remaining Contractual Life Options Outstanding | 4.6
Weighted Average Exercise Price Options Outstanding | $ 17.79
Number Exercisable Options Exercisable (in Shares) | 863,000
Weighted Average Exercise Price Options Exercisable | $ 15.36

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c), d(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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