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Note 8 - Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Income Tax Expense (Benefit) $ 380 $ 528
Deferred Tax Liabilities, Net 4,040 4,196
Deferred Tax Liabilities, Net, Noncurrent 4,160 4,170
Deferred Tax Assets, Net of Valuation Allowance, Current 120 161
Deferred Tax Liabilities, Net, Current   187
Operating Loss Carryforwards 58,030  
Operating Loss Carryforwards, Amount Recorded In Equity Upon Realization 2,949  
Future, Fully Phased In Tax Rate 25.00%  
Foreign [Member]
    
Operating Loss Carryforwards 12,390  
Domestic [Member]
    
Operating Loss Carryforwards $ 48,589  
Minimum [Member]
    
Operating Loss Carryforwards, Limitations on Use $12,000  
Maximum [Member]
    
Operating Loss Carryforwards, Limitations on Use $14,500