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Note 21 - Commitments and Contingent Liabilities (Details) - George Mason Sponsorship [Member] - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jul. 01, 2015 | Dec. 31, 2015
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Agreement Term | 20 years |
Effective June 30, 2025 [Member] |  |
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Option to Terminate | 10 years |
Effective June 30, 2030 [Member] |  |
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Option to Terminate | 15 years |
Termination Option One [Member] |  |
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Increase (Decrease) in Contractual Obligation, Termination Option (in Dollars) |  | $ 3.5
Termination Option Two [Member] |  |
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Increase (Decrease) in Contractual Obligation, Termination Option (in Dollars) |  | $ 3.6
Minimum [Member] | Termination Option One [Member] |  |
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Contractual Obligation, Option Period |  | 11 years
Minimum [Member] | Termination Option Two [Member] |  |
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Contractual Obligation, Option Period |  | 16 years
Maximum [Member] | Termination Option One [Member] |  |
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Contractual Obligation, Option Period |  | 15 years
Maximum [Member] | Termination Option Two [Member] |  |
Note 21 - Commitments and Contingent Liabilities (Details) [Line Items] |  |
Contractual Obligation, Option Period |  | 20 years

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- Details
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