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Note 3 - Inventories (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  | 3 Months Ended
--- | --- | --- | ---
Sep. 30, 2013 | Jun. 30, 2013 | Dec. 31, 2012 | Mar. 31, 2013 Previously Unrecognized LIFO Income [Member] Pre-Tax Amounts [Member] | Mar. 31, 2013 After-tax [Member]
Note 3 - Inventories (Details) [Line Items] |  |  |  |  |
LIFO Inventory Amount | $ 45.9 |  | $ 46.7 |  |
Percentage of LIFO Inventory | 18.70% |  | 16.10% |  |
Inventory, LIFO Reserve, Effect on Income, Net |  |  |  | 1.9 | 1.2
Inventory, LIFO Reserve, Period Charge | 0.2 | 0.4 |  |  |
Inventory Difference Using FIFO Basis | $ 2.5 |  |  |  |

X
- Definition The difference between the change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods and any LIFO decrement which have been reflected in the statement of income during the period. + References No definition available. + Details
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X
- Definition The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period. + 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 210.5-02.6b) -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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6a) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6c) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section L + Details
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X
- Definition The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
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X
- Definition The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent. + References No definition available. + Details
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- Definition The difference in inventory balance if costed on a FICO basis compared to LIFO basis + References No definition available. + Details
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- Details
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