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Note A - Summary of Significant Accounting Policies (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 24 Months Ended
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2011
Percentage of LIFO Inventory | 73.00% | 82.00% |  | 82.00%
Depreciation (in Dollars) | $ 11.2 | $ 10.5 | $ 10.2 |
Concentration Risk, Percentage |  | 10.00% |  | 10.00%
Advertising Expense (in Dollars) | $ 3.5 | $ 3.4 | $ 3.2 |
Percentage Of Total Sales Benchmark [Member] |  |  |  |
Concentration Risk, Percentage | 10.00% |  |  |
Building [Member] | Minimum [Member] |  |  |  |
Property, Plant and Equipment, Useful Life | 20 years |  |  |
Building [Member] | Maximum [Member] |  |  |  |
Property, Plant and Equipment, Useful Life | 50 years |  |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |  |
Property, Plant and Equipment, Useful Life | 15 years |  |  |
Software [Member] | Minimum [Member] |  |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |  |
Software [Member] | Maximum [Member] |  |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |  |
Minimum [Member] | Technology And Drawings [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 15 years |  |  |
Minimum [Member] | Customer Relationships [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 9 years |  |  |
Minimum [Member] | Other Intangible Assets [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |  |  |
Maximum [Member] | Technology And Drawings [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 20 years |  |  |
Maximum [Member] | Customer Relationships [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 10 years |  |  |
Maximum [Member] | Other Intangible Assets [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 18 years |  |  |

X
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-7 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611 + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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