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Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification (USD $)
In Thousands, unless otherwise specified
 9 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification [Line Items]    
Definite-lived intangible assets, Weighted-Average Life (Years) 12 years 11 years
Definite-lived intangible assets, Original Cost $ 30,491 $ 30,496
Definite-lived intangible assets, Accumulated Amortization 21,246 19,838
Definite-lived intangible assets, Net Book Value 9,245 10,658
Indefinite-lived intangible assets, Subtotal, Weighted-Average Life (Years)    [1]    [1]
Indefinite-lived intangible assets, Subtotal, Original Cost 33,976 29,505
Indefinite-lived intangible assets, Subtotal, Net Book Value 33,976 29,505
Balance, Weighted-Average Life (Years)    [1]    [1]
Balance, Original Cost 64,467 60,001
Balance, Accumulated Amortization 21,246 19,838
Balance, Net Book Value 43,221 40,163
Goodwill, Weighted-Average Life (Years)    [1]    [1]
Goodwill, Original Cost 4,649 280
Goodwill, Net Book Value 4,649 280
Trademarks [Member]
    
Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification [Line Items]    
Indefinite-lived intangible assets, Weighted-Average Life (Years)    [1]    [1]
Indefinite-lived intangible assets, Original Cost 29,225 29,225
Indefinite-lived intangible assets, Net Book Value 29,225 29,225
AFP Customers [Member]
    
Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification [Line Items]    
Indefinite-lived intangible assets, Weighted-Average Life (Years)    [1]  
Indefinite-lived intangible assets, Original Cost 102  
Indefinite-lived intangible assets, Net Book Value 102  
Product Rights [Member]
    
Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification [Line Items]    
Definite-lived intangible assets, Weighted-Average Life (Years) 12 years 12 years
Definite-lived intangible assets, Original Cost 27,134 27,134
Definite-lived intangible assets, Accumulated Amortization 20,451 19,114
Definite-lived intangible assets, Net Book Value 6,683 8,020
Balance, Accumulated Amortization 20,451 19,114
Patents [Member]
    
Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification [Line Items]    
Definite-lived intangible assets, Weighted-Average Life (Years) 10 years 10 years
Definite-lived intangible assets, Original Cost 293 298
Definite-lived intangible assets, Accumulated Amortization 71 50
Definite-lived intangible assets, Net Book Value 222 248
Balance, Accumulated Amortization 71 50
Trademarks [Member]
    
Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification [Line Items]    
Definite-lived intangible assets, Weighted-Average Life (Years) 11 years 11 years
Definite-lived intangible assets, Original Cost 19 19
Definite-lived intangible assets, Accumulated Amortization 13 13
Definite-lived intangible assets, Net Book Value 6 6
Balance, Accumulated Amortization 13 13
Land-Use Rights [Member]
    
Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification [Line Items]    
Definite-lived intangible assets, Weighted-Average Life (Years) 39 years 39 years
Definite-lived intangible assets, Original Cost 2,540 2,540
Definite-lived intangible assets, Accumulated Amortization 206 156
Definite-lived intangible assets, Net Book Value 2,334 2,384
Balance, Accumulated Amortization 206 156
Other Intangible Assets [Member]
    
Note 9 - Goodwill and Intangible Assets (Details) - Weighted-Average Life, Original Cost, Accumulated Amortization, and Net Book Value by Major Intangible Asset Classification [Line Items]    
Definite-lived intangible assets, Weighted-Average Life (Years) 1 year 1 year
Definite-lived intangible assets, Original Cost 505 505
Definite-lived intangible assets, Accumulated Amortization 505 505
Balance, Accumulated Amortization $ 505 $ 505
[1] Intangible assets with indefinite lives have an undeterminable average life.