Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Acquisition (Details Textual)

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Note 2 - Acquisition (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Apr. 06, 2018
Jun. 30, 2018
Jun. 30, 2018
Dec. 31, 2017
Contract with Customer, Liability, Total   $ 11,697,000 $ 11,697,000 $ 11,547,000
Customer Relationships [Member]        
Finite-Lived Intangible Asset, Useful Life     2 years  
Assets and Franchise Agreement [Member]        
Business Combination, Consideration Transferred, Total $ 100,000      
Contract with Customer, Liability, Total 12,998      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net, Including Bargain Purchase Gain 87,002      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles 129,000      
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual   17,000 $ 17,000  
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual   $ 62,000 $ 62,000  
Assets and Franchise Agreement [Member] | Franchise Rights [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 85,000      
Finite-Lived Intangible Asset, Useful Life 4 years      
Assets and Franchise Agreement [Member] | Customer Relationships [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 44,000      
Finite-Lived Intangible Asset, Useful Life 2 years      
Assets and Franchise Agreement [Member] | General and Administrative Expense [Member]        
Business Combination, Acquisition Related Costs $ 3,250