Note 12 - Postretirement Medical Benefits (Details) - Estimated Costs Amortized from Accumulated Other Comprehensive Income into Net Periodic Cost (Postretirement Medical Benefits [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013
Postretirement Medical Benefits [Member]
Note 12 - Postretirement Medical Benefits (Details) - Estimated Costs Amortized from Accumulated Other Comprehensive Income into Net Periodic Cost [Line Items]
Unrecognized prior service cost	$ 207
Unrecognized net actuarial gain	(63)
Total	$ 144

Note 12 - Postretirement Medical Benefits (Details) - Estimated Costs Amortized from Accumulated Other Comprehensive Income into Net Periodic Cost (Postretirement Medical Benefits [Member], USD $)
In Thousands, unless otherwise specified

12 Months Ended

Dec. 31, 2013

Postretirement Medical Benefits [Member]

Note 12 - Postretirement Medical Benefits (Details) - Estimated Costs Amortized from Accumulated Other Comprehensive Income into Net Periodic Cost [Line Items]

Unrecognized prior service cost

$ 207

Unrecognized net actuarial gain

(63)

Total

$ 144