Annual report pursuant to Section 13 and 15(d)

Note 2 - Acquisitions (Details Textual)

v3.10.0.1
Note 2 - Acquisitions (Details Textual) - USD ($)
12 Months Ended
Apr. 06, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Contract with Customer, Liability, Total   $ 13,609,000 $ 11,547,000 $ 9,598,000
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 $ 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 129,000 129,000    
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      
Assets and Franchise Agreement [Member] | Revenue, Net [Member]        
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual   226,000    
Assets and Franchise Agreement [Member] | Net Income [Member]        
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual   $ 96,000