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Note 12 - Stockholders' Equity (Details) (USD $) | 141 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 05, 2013 | Feb. 01, 2011
Stockholders' Equity Note [Abstract] |  |  |
Treasury Stock, Shares, Acquired | 4,579,563 |  |
Treasury Stock, Value, Acquired, Cost Method (in Dollars) | $ 53,398,000 |  |
Stock Repurchase Program Number of Additional Shares Authorized to be Repurchased |  |  | 300,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased | 319,396 |  |
Minimum Percentage of Common Stock Acquired by a Person or Group which Triggers Exercise of New Rights |  | 15.00% |
New Right Purchase Price (in Dollars per share) |  | $ 100.00 |
Common Stock, Capital Shares Reserved for Future Issuance | 9,886,354 | 10,188,600 |

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