Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Recently Adopted Accounting Pronouncements (Details Textual)

v3.10.0.1
Note 8 - Recently Adopted Accounting Pronouncements (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2018
Jun. 30, 2018
Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total   $ (7,178,000) $ (198,000) [1]
Scenario, Forecast [Member]      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%    
Adjustments for New Accounting Principle, Early Adoption [Member]      
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total     $ (43,000)
[1] derived from audited financial statements