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Note 11 - Income Taxes - Net deferred tax liabilities comprised of the following balance sheet accounts (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Note 11 - Income Taxes - Net Deferred Tax Liabilities Comprised Of Following Balance Sheet Accounts Details    
Current deferred tax assets $ 92 $ 106
Current deferred tax liabilities 0 0
Non-current deferred tax liabilities (4,631) (4,462)
Net deferred tax liabilities $ (4,539) $ (4,356)