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Note 7 - Stock-Based Compensation (Detail) - Non-vested Stock Option Activity (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Non-Vested Stock Options Outstanding | 1,914,000 | 1,902,000 | 1,902,000 | 2,856,125 | 3,051,125
Granted | 70,000 |  | 60,000 | 110,000 |
Granted (in Dollars per share) | $ 1.72 | $ 4.08 | $ 4.08 | $ 3.38 |
Non-Vested Stock Options [Member] | Beginning of Period [Member] |  |  |  |  |
Non-Vested Stock Options Outstanding |  | 183,938 | 183,938 |  |
Non-Vested Stock Options Weighted Average Grant Date Fair Value (in Dollars per share) |  | $ 5.56 | $ 5.56 |  |
Non-Vested Stock Options [Member] | End of Period [Member] |  |  |  |  |
Non-Vested Stock Options Outstanding | 80,500 |  |  |  |
Non-Vested Stock Options Weighted Average Grant Date Fair Value (in Dollars per share) | $ 5.35 |  |  |  |
Non-Vested Stock Options [Member] |  |  |  |  |
Granted | 70,000 |  |  |  |
Granted (in Dollars per share) | $ 1.72 |  |  |  |
Vested | (172,688) |  |  |  |
Vested (in Dollars per share) | $ 3.70 |  |  |  |
Forfeited | (750) |  |  |  |
Forfeited (in Dollars per share) | $ 5.18 |  |  |  |
Beginning of Period [Member] |  |  |  |  |
Non-Vested Stock Options Outstanding | 1,902,000 |  |  |  |
End of Period [Member] |  |  |  |  |
Non-Vested Stock Options Outstanding | 1,914,000 |  |  |  |

X
- Definition The weighted average grant-date fair value of options forfeited during the reporting period as calculated by applying the disclosed option pricing methodology. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options outstanding as calculated by applying the disclosed option pricing methodology. + References No definition available. + Details
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- Definition Number of options vested during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options vested during the reporting period as calculated by applying the disclosed option pricing methodology. + References No definition available. + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to 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)(iv)(3) -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)(f) -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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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -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 (d)(1) -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 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 2: 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 Reference 3: 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 4: 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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