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Note 7 - Deferred Compensation and Long-term Incentive Plans (Details) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 31, 2013 | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2013 | Dec. 31, 2012
Note 7 - Deferred Compensation and Long-term Incentive Plans (Details) [Line Items] |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Employer Contribution | $ 2.0 |  |  |  |  |  |
Guaranteed Return |  |  |  |  |  | 5.25% |
Deferred Compensation Arrangement with Individual, Compensation Expense |  | 0.4 | 0.3 | 0.7 | 0.6 |  |
Deferred Compensation Liability, Classified, Noncurrent |  | $ 5.2 |  | $ 5.2 |  |  | $ 3.6
Minimum [Member] |  |  |  |  |  |  |
Note 7 - Deferred Compensation and Long-term Incentive Plans (Details) [Line Items] |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Requisite Service Period |  | 1 year |  | 1 year |  |  |
Maximum [Member] |  |  |  |  |  |  |
Note 7 - Deferred Compensation and Long-term Incentive Plans (Details) [Line Items] |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Requisite Service Period |  | 7 years |  | 7 years |  |  |

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- Definition The annual return percentage guaranteed on balances in an employee's deferred compensation account + References No definition available. + Details
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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement. + References No definition available. + Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + References No definition available. + Details
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