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Note O - Stock Options (Detail) - Options Outstanding and Exercisable (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Options Outstanding Weighted average exercise price | $ 0.16 | $ 0.22 | $ 0.25
Options Outstanding Weighted average remaining life | 4 years 76 days |  |
$0.08 - $0.21 [Member] | Minimum [Member] |  |  |
Range of exercise prices | $ 0.08 |  |
$0.08 - $0.21 [Member] | Maximum [Member] |  |  |
Range of exercise prices | $ 0.21 |  |
$0.08 - $0.21 [Member] |  |  |
Options Outstanding Number of shares (in Shares) | 2,852,272 |  |
Options Outstanding Weighted average exercise price | $ 0.11 |  |
Options Outstanding Weighted average remaining life | 4 years 83 days |  |
Options Exercisable Number exercisable (in Shares) | 1,820,594 |  |
Options Exercisable Weighted average exercise price | $ 0.12 |  |
$0.22 - $0.40 [Member] | Minimum [Member] |  |  |
Range of exercise prices | $ 0.22 |  |
$0.22 - $0.40 [Member] | Maximum [Member] |  |  |
Range of exercise prices | $ 0.40 |  |
$0.22 - $0.40 [Member] |  |  |
Options Outstanding Number of shares (in Shares) | 70,000 |  |
Options Outstanding Weighted average exercise price | $ 0.40 |  |
Options Outstanding Weighted average remaining life | 4 years 7 days |  |
Options Exercisable Number exercisable (in Shares) | 70,000 |  |
Options Exercisable Weighted average exercise price | $ 0.40 |  |
$0.41 - $0.68 [Member] | Minimum [Member] |  |  |
Range of exercise prices | $ 0.41 |  |
$0.41 - $0.68 [Member] | Maximum [Member] |  |  |
Range of exercise prices | $ 0.68 |  |
$0.41 - $0.68 [Member] |  |  |
Options Outstanding Number of shares (in Shares) | 340,000 |  |
Options Outstanding Weighted average exercise price | $ 0.46 |  |
Options Outstanding Weighted average remaining life | 4 years 7 days |  |
Options Exercisable Number exercisable (in Shares) | 340,000 |  |
Options Exercisable Weighted average exercise price | $ 0.46 |  |
$0.07 - $0.68 [Member] | Minimum [Member] |  |  |
Range of exercise prices | $ 0.07 |  |
$0.07 - $0.68 [Member] | Maximum [Member] |  |  |
Range of exercise prices | $ 0.68 |  |
$0.07 - $0.68 [Member] |  |  |
Options Outstanding Number of shares (in Shares) | 3,262,272 |  |
Options Exercisable Number exercisable (in Shares) | 2,230,594 |  |

X
- Definition Exercise price of the option. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Footnote 5 + Details
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X
- Definition Weighted average price 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 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 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. + Details
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X
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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X
- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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, 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. + Details
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