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Note 8 - Employee Benefit Plans (Details) - Investment Policy Allocation | 12 Months Ended
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Dec. 31, 2013
Large Cap U.S. Equity [Member] |
Note 8 - Employee Benefit Plans (Details) - Investment Policy Allocation [Line Items] |
Target plan asset allocations | 10.00%
Target plan asset allocations, minimum | 7.00%
Target plan asset allocations, maximum | 13.00%
Small Cap U.S. Equity [Member] |
Note 8 - Employee Benefit Plans (Details) - Investment Policy Allocation [Line Items] |
Target plan asset allocations | 5.00%
Target plan asset allocations, minimum | 4.00%
Target plan asset allocations, maximum | 6.00%
Foreign Government Debt Securities [Member] |
Note 8 - Employee Benefit Plans (Details) - Investment Policy Allocation [Line Items] |
Target plan asset allocations | 10.00%
Target plan asset allocations, minimum | 8.00%
Target plan asset allocations, maximum | 12.00%
Fixed Income Funds [Member] |
Note 8 - Employee Benefit Plans (Details) - Investment Policy Allocation [Line Items] |
Target plan asset allocations | 35.00%
Target plan asset allocations, minimum | 29.00%
Target plan asset allocations, maximum | 43.00%
Real Estate [Member] |
Note 8 - Employee Benefit Plans (Details) - Investment Policy Allocation [Line Items] |
Target plan asset allocations | 15.00%
Target plan asset allocations, minimum | 12.00%
Target plan asset allocations, maximum | 18.00%
Hedge Funds [Member] |
Note 8 - Employee Benefit Plans (Details) - Investment Policy Allocation [Line Items] |
Target plan asset allocations | 15.00%
Target plan asset allocations, minimum | 12.00%
Target plan asset allocations, maximum | 18.00%
Real Return [Member] |
Note 8 - Employee Benefit Plans (Details) - Investment Policy Allocation [Line Items] |
Target plan asset allocations | 10.00%
Target plan asset allocations, minimum | 8.00%
Target plan asset allocations, maximum | 12.00%

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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + 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 (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. + 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 (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis. + 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 (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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