XML 136 R125.htm IDEA: XBRL DOCUMENT v3.3.1.900
Note 17 - Other Postretirement Benefits (Details) - Weighted-average Assumptions Used to Determine the Net Benefit Obligations - Other Postretirement Benefit Plans [Member]
Dec. 31, 2015
Dec. 31, 2014
Note 17 - Other Postretirement Benefits (Details) - Weighted-average Assumptions Used to Determine the Net Benefit Obligations [Line Items]    
Discount rate 3.60% 3.49%
Salary increase rate 1.80% 2.60%