Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Recently Adopted Accounting Pronouncements (Details Textual)

v3.7.0.1
Note 8 - Recently Adopted Accounting Pronouncements (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Adjustments for New Accounting Principle, Early Adoption [Member]        
Tax Adjustments, Settlements, and Unusual Provisions $ 1.4 $ 1.2 $ 3.5 $ 3.5