XML 44 R33.htm IDEA: XBRL DOCUMENT v3.4.0.3
Note 6 - Fair Value of Financial Instruments (Details Textual) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Industrial Revenue Bonds [Member]    
Long-term Debt, Fair Value $ 2.7 $ 2.7