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Note 18 - Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Note 18 - Fair Value of Financial Instruments (Details) [Line Items]      
Financial Assets at Fair Value Option $ 30,700 $ 32,600  
Financial Liabilities at Fair Value Option 29,000 28,800  
Financial Assets, Fair Value Option Election During Period   5,000  
Proceeds From Sale of Financial Assets   6,200  
Fair Value, Option, Changes in Fair Value, Gain (Loss) (1,841) (2,568) $ (2,521)
Financial Liabilities at Fair Value Option, Contractual Principal 61,900 61,900  
Financial Liabilities at Fair Value Option, Accrued Interest Payable $ 100 100  
Nonaccruing Collateral Dependent Loans - Percent Of The Appraised Or Internally Estimated Value Of The Property [Member]      
Note 18 - Fair Value of Financial Instruments (Details) [Line Items]      
Fair Value Inputs, Discount Rate 85.00%    
Interest Rate Swaps [Member]      
Note 18 - Fair Value of Financial Instruments (Details) [Line Items]      
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ (1,600) $ (4,000) $ 3,600