Note 12 - Postretirement Medical Benefits (Details) - Amounts Recognized in Accumulated Other Comprehensive Income (Postretirement Medical Benefits [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Postretirement Medical Benefits [Member]
Note 12 - Postretirement Medical Benefits (Details) - Amounts Recognized in Accumulated Other Comprehensive Income [Line Items]
Unrecognized net actuarial (gain) loss	$ (1,190)	$ 3,087
Unrecognized prior service cost	383	639
Total	$ (807)	$ 3,726