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Note 10 - Common Stock and Additional Paid-In Capital (Details) - Changes in Earnings Per Share (USD $) | 3 Months Ended | 12 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Note 10 - Common Stock and Additional Paid-In Capital (Details) - Changes in Earnings Per Share [Line Items] |  |  |  |  |
Earnings per share, basic and diluted | $ 0.02 | $ 1.12 | $ 0.58 | $ (26.36) | $ (209.97)
Reverse stock split impact | $ 0.02 | $ 0.96 |  |  |
Scenario, Previously Reported [Member] |  |  |  |  |
Note 10 - Common Stock and Additional Paid-In Capital (Details) - Changes in Earnings Per Share [Line Items] |  |  |  |  |
Earnings per share, basic and diluted | $ 0.00 | $ 0.16 |  |  |
Scenario, Actual [Member] |  |  |  |  |
Note 10 - Common Stock and Additional Paid-In Capital (Details) - Changes in Earnings Per Share [Line Items] |  |  |  |  |
Earnings per share, basic and diluted | $ 0.02 | $ 1.12 |  |  |

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- Definition The impact on basic and diluted earnings per share after a reverse stock split. + References No definition available. + Details
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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References No definition available. + Details
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