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Note 14 - Retirement Benefit Plans (Details) - Obligation and Funded Status (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Note 14 - Retirement Benefit Plans (Details) - Obligation and Funded Status [Line Items]      
Benefit obligation at beginning of year $ 2,755 $ 3,117 $ 3,178
Service cost (153) (340) (35)
Interest cost 110 143 175
Benefits paid (168) (165) (201)
Benefit obligation at end of year 2,544 2,755 3,117
Accumulated post-retirement benefit obligation in excess of plan assets 2,544 2,755 3,117
Retirees [Member]
      
Note 14 - Retirement Benefit Plans (Details) - Obligation and Funded Status [Line Items]      
Benefit obligation at end of year 1,443 1,654 2,363
Fully Eligible Participants [Member]
      
Note 14 - Retirement Benefit Plans (Details) - Obligation and Funded Status [Line Items]      
Benefit obligation at end of year 983 856 537
Other Participants [Member]
      
Note 14 - Retirement Benefit Plans (Details) - Obligation and Funded Status [Line Items]      
Benefit obligation at end of year $ 118 $ 245 $ 217