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Note 10 - Commitments and Contingencies (Details) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2014
Note 10 - Commitments and Contingencies (Details) [Line Items] |  |
Maximum AllowableCoverageOfInsurancePolicy | $ 39,000,000 | $ 39,000,000
Financial Assurance Coverage Amount Under Insurance Policy | 38,679,000 | 38,679,000
Sinking Fund Related to Insurance Policy | 15,424,000 | 15,424,000
Interest Earned on Sinking Fund | 953,000 | 953,000
Interest Income on Sinking Fund During Period | 5,000 | 15,000
Insurers Obligation to Entity on Termination of Contract | 100.00% | 100.00%
Financial Assurance Coverage Amount Under Second Insurance Policy | 7,800,000 | 7,800,000
Annual Growth Rate of Financial Assurance Coverage Amount Under Second Insurance Policy |  | 1.50%
Maximum Financial Assurance Coverage Amount Under Second Insurance Policy | 8,200,000 | 8,200,000
Sinking Fund Related to Second Insurance Policy | 5,902,000 | 5,902,000
Interest Earned on Sinking Fund Under Second Insurance Policy | 202,000 | 202,000
Interest Income on Sinking Fund During Period Under Second Insurance Policy | 1,000 | 4,000
Period of Finite Second Insurance Policy |  | 4 years
Minimum [Member] |  |
Note 10 - Commitments and Contingencies (Details) [Line Items] |  |
Renewal Fee for Additional Year Under Second Insurance Policy |  | 41,000
Maximum [Member] |  |
Note 10 - Commitments and Contingencies (Details) [Line Items] |  |
Renewal Fee for Additional Year Under Second Insurance Policy |  | $ 46,000

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- Definition Financial assurance coverage amount under second insurance policy. + References No definition available. + Details
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- Definition Maximum financial assurance coverage amount under second insurance policy. + References No definition available. + Details
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- Details
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