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Note 11 - Fair Value of Financial Instruments (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]          
Financial Assets At Fair Value Option $ 32,200,000   $ 32,200,000   $ 32,600,000
Financial Liabilities At Fair Value Option 29,500,000   29,500,000   28,800,000
Financial Assets, Fair Value Option Election During Period       $ 5,000,000  
Proceeds From Sale of Financial Assets       1,900,000  
Fair Value, Option, Changes in Fair Value, Gain (Loss) 768,000 $ (402,000) 173,000 (1,046,000)  
Financial Liabilites At Fair Value Option, Contractual Principal 61,900,000   61,900,000   61,900,000
Financial Liabilities At Fair Value Option, Accrued Interest Payable 100,000   100,000   100,000
Liabilities, Fair Value Disclosure, Nonrecurring 0   $ 0   $ 0
Nonaccruing Collateral Dependent Loans - Percent Of The Appraised Or Internally Estimated Value Of The Property [Member]          
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]          
Fair Value Inputs, Discount Rate     85.00%    
Interest Rate Swaps [Member]          
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]          
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ 2,100,000 $ (800,000) $ 800,000 $ (1,800,000)