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Note H - Goodwill and Other Intangible Assets (Details) - Major Components of Goodwill and Other Intangible Assets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Note H - Goodwill and Other Intangible Assets (Details) - Major Components of Goodwill and Other Intangible Assets [Line Items]    
Historical Cost $ 15,528 $ 15,716
Accumulated Amortization 5,593 4,414
Total 37,096 36,700
Total 5,593 4,414
Goodwill [Member]
    
Note H - Goodwill and Other Intangible Assets (Details) - Major Components of Goodwill and Other Intangible Assets [Line Items]    
Goodwill 18,046 17,452
Trademarks and Trade Names [Member]
    
Note H - Goodwill and Other Intangible Assets (Details) - Major Components of Goodwill and Other Intangible Assets [Line Items]    
Trade names & trademarks 3,522 3,532
Customer Relationships [Member]
    
Note H - Goodwill and Other Intangible Assets (Details) - Major Components of Goodwill and Other Intangible Assets [Line Items]    
Historical Cost 8,170 8,366
Accumulated Amortization 2,403 1,582
Total 2,403 1,582
Technology And Drawings [Member]
    
Note H - Goodwill and Other Intangible Assets (Details) - Major Components of Goodwill and Other Intangible Assets [Line Items]    
Historical Cost 5,790 5,790
Accumulated Amortization 1,685 1,379
Total 1,685 1,379
Other Intangible Assets [Member]
    
Note H - Goodwill and Other Intangible Assets (Details) - Major Components of Goodwill and Other Intangible Assets [Line Items]    
Historical Cost 1,568 1,560
Accumulated Amortization 1,505 1,453
Total $ 1,505 $ 1,453