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Note 11 - Components of Net Periodic Benefit Cost (Details) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2013 acre | Nov. 30, 2012 acre | Apr. 30, 2011 acre | Mar. 31, 2014 acre | Oct. 31, 2011 | Dec. 31, 2009
Compensation and Retirement Disclosure [Abstract] |  |  |  |  |  |
Defined Benefit Plan Security to Support Unfunded Liabilities |  |  |  |  |  | $ 5.2
Area of Real Estate Property Pledged as Security (in Acres) |  | 7,000 | 1,400 |  |  |
Defined Benefit Plan, Period for Release of Real Estate Property Pledged as Security |  | 5 years | 5 years |  |  |
Defined Benefit Plan, Additional Security to Support Unfunded Liabilities |  |  |  |  | 18.7 |
Defined Benefit Plan Number of Pension Plans Provided Security |  |  |  |  | 2 |
Area of Real Estate Property Proposed to be Sold (in Acres) | 270 |  |  |  |  |
Defined Benefit Pension Plan, Liabilities, Noncurrent |  |  |  | 20.7 |  |
Area of Real Estate Property Held as Collateral for Unfunded Pension Obligations (in Acres) |  |  |  | 8,400 |  |
Real Estate Property Held as Collateral for Unfunded Pension Obligations |  |  |  | 1.8 |  |
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year |  |  |  | 2.8 |  |
Defined Benefit Plan, Contributions by Employer |  |  |  | $ 0.5 |  |

X
- Definition Represents the area of real estate secured for unfunded pension obligations. + References No definition available. + Details
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X
- Definition Represents the area of real estate which is proposed to be sold. + References No definition available. + Details
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X
- Definition Represents the additional security provided to support the unfunded liabilities of the pension plans. + References No definition available. + Details
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- Definition Represents the area of real estate property pledged as security. + References No definition available. + Details
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- Definition Represents the number of pension plans that the entity was required to provide additional security for the unfunded liabilities. + References No definition available. + Details
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- Definition Represents the period for release of real estate property pledged as collateral. + References No definition available. + Details
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- Definition Represents the security provided to support the unfunded liabilities of the pension plan. + References No definition available. + Details
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- Definition Represents the carrying amount, as of the date of the latest financial statement presented, of real estate owned but transferred to serve as collateral for the payment of the unfunded pension obligations. + References No definition available. + Details
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- Definition This represents the noncurrent liability recognized in the balance sheet that is associated with the defined benefit pension plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2410-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919 + Details
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- Definition The increase in the fair value of plan assets from contributions made by the employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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