Annual report pursuant to Section 13 and 15(d)

Note 9 - Income Taxes (Details Textual)

v3.7.0.1
Note 9 - Income Taxes (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Effective Income Tax Rate Reconciliation, Percent 1.10% 2.60%
General and Administrative Expense [Member]    
Income Tax Examination, Penalties and Interest Expense $ 27,000 $ 33,000
Other Liabilities [Member]    
Liability for Uncertainty in Income Taxes, Noncurrent 40,000 $ 66,000
Domestic Tax Authority [Member]    
Operating Loss Carryforwards $ 22,613,000  
Domestic Tax Authority [Member] | Latest Tax Year [Member]    
Open Tax Year 2013  
State and Local Jurisdiction [Member]    
Operating Loss Carryforwards $ 24,948,000  
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]    
Open Tax Year 2012