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Note 8 - Income Taxes (Details) - Deferred Income Taxes (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Deferred tax liabilities:    
Property, plant and equipment $ 232 $ 450
Intangible assets and other 4,242 4,272
Other 94  
Total deferred tax liabilities 4,568 4,722
Deferred tax assets:    
Net operating loss carryforwards 18,901 18,505
Intangible assets 4,265 4,664
Accrued expenses, reserves and other 3,373 3,764
Total deferred tax assets 26,539 26,933
Valuation allowance for deferred tax assets (26,131) (26,251)
Net deferred tax assets 408 682
Net deferred tax liability $ (4,160) $ (4,040)