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Note 5 - Goodwill and Intangible Assets (Detail) - Estimated Amortization Expense for Fututre Years (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2019
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Dec. 31, 2011
2012 July through December           $ 210    
2013         253      
2014       104        
2015     50          
2016   50            
2017 and thereafter 150              
Total amortization expense $ 817           $ 817 $ 1,027