XML 90 R10.htm IDEA: XBRL DOCUMENT v2.4.1.9
Note 3 - Debt
3 Months Ended
Mar. 31, 2015
Debt Disclosure [Abstract]  
Debt Disclosure [Text Block]
3.      Debt

Based on borrowing rates currently available to us for loans with similar terms and maturities, the fair value of long-term debt was $3.6 billion at March 31, 2015 and December 31, 2014, compared to recorded book values of $3.2 billion at March 31, 2015 and December 31, 2014.  The Company measures the fair value of its long-term debt using Level 2 inputs based primarily on current market yields for its existing debt traded in the secondary market.