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Note 1 - Summary of Business and Significant Accounting Policies (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 6 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2014 Myers & Sons Construction L.P. [Member] | Sep. 30, 2014 Minimum [Member] | Jun. 30, 2014 Maximum [Member] | Sep. 30, 2014 Maximum [Member]
Note 1 - Summary of Business and Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |  |
Ownership Interest In Joint Venture |  | 50.00% |  |  |  |  |
Owenership Interest In Subsidiary |  | 50.00% |  | 50.00% |  |  |
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Percentage |  |  |  | 50.00% |  |  |
Contract Completion Term |  |  |  |  | 12 months | 36 months |
Estimated Construction Revenues, Before Tax (in Dollars) | $ 4.5 | $ 0.4 |  |  |  |  |
Estimated Construction Revenue Per Diluted Share (in Dollars per share) | $ 0.24 | $ 0.02 |  |  |  |  |
Contract Receivable Discounted Percentage |  | 4.25% |  |  |  |  |
Interest Revenue (Expense), Net (in Dollars) | 0.1 | 0.3 |  |  |  |  |
Mortgage Loans on Real Estate (in Dollars) | 0.1 | 0.1 | 0.2 |  |  |  |
Mortgage Loans on Real Estate, Interest Rate |  | 3.50% | 3.50% |  |  |  |
Notes Payable, Noncurrent (in Dollars) | $ 2.6 | $ 2.6 |  |  |  |  |
Debt Instrument, Term |  |  |  |  | 3 years |  | 5 years
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum |  | 3.12% |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum |  | 6.29% |  |  |  |  |

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