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Note 3 - Securities (Details) - Securities Available to sell With Unrealized Losses (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Note 3 - Securities (Details) - Securities Available to sell With Unrealized Losses [Line Items]  
Less Than 12 Months - Fair Value $ 44,595
Less Than 12 Months - Unrealized Loss (1,075)
Total - Fair Value 44,595
Total - Unrealized Loss (1,075)
US Government-sponsored Enterprises Debt Securities [Member]
  
Note 3 - Securities (Details) - Securities Available to sell With Unrealized Losses [Line Items]  
Less Than 12 Months - Fair Value 7,780
Less Than 12 Months - Unrealized Loss (243)
Total - Fair Value 7,780
Total - Unrealized Loss (243)
Mortgage-backed Securities, Issued by Private Enterprises [Member]
  
Note 3 - Securities (Details) - Securities Available to sell With Unrealized Losses [Line Items]  
Less Than 12 Months - Fair Value 36,815
Less Than 12 Months - Unrealized Loss (832)
Total - Fair Value 36,815
Total - Unrealized Loss $ (832)