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Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2015
Common Stock [Member] | Tarzian Inc [Member]        
Cost Method Ownership Percentage       32.40%
Dividends Liquidation Dissolution [Member] | Tarzian Inc [Member]        
Cost Method Ownership Percentage       67.90%
Customer Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Automotive [Member]        
Concentration Risk, Percentage 24.00%      
Customer Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Medical [Member]        
Concentration Risk, Percentage 11.00%      
Customer Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Restaurant [Member]        
Concentration Risk, Percentage 9.00%      
Advertising Expense $ 1,000,000 $ 1,100,000 $ 900,000  
Minimum Percentage of Receivable Balances for creating Allowance for Doubtful Accounts 85.00%      
Period for Creating Allowance for Doubtful Accounts 120 days      
Provision for Doubtful Accounts $ 600,000 1,300,000 400,000  
Property, Plant and Equipment, Additions 29,800,000      
Asset Retirement Obligation 701,000 600,000    
Asset Retirement Obligation, Accretion Expense $ 34,000 $ 6,000 $ 17,000