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Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories $ 36,566 $ 35,067 $ 32,420
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 1,047    
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 0    
US Large Cap [Member] | Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 9,926    
US Large Cap [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 0    
US Mid Cap [Member] | Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 1,552    
US Mid Cap [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 0    
US Small Cap [Member] | Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 788    
US Small Cap [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 0    
World Equity [Member] | Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 3,152    
World Equity [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 0    
Real Estate [Member] | Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 911    
Real Estate [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 0    
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 637    
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 0    
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 8,405    
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 10,148    
Fair Value, Inputs, Level 1 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories 26,418    
Fair Value, Inputs, Level 2 [Member]
      
Note 14 - Employee Benefit Plans (Details) - Summary of Fair Values of Pension Plan Assets [Line Items]      
Plan Asset Categories $ 10,148