Note 5 - Loans (Details) - Summary of Interest Foregone on Non-Accrual Loans and Loans Classified as TDR (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Summary of Interest Foregone on Non-Accrual Loans and Loans Classified as TDR [Abstract]
Interest income that would have been recognized had the loans performed in accordance with their original terms	$ 841	$ 1,507	$ 2,523	$ 4,520
Less: Interest income included in the results of operations	153	225	572	959
Total foregone interest	$ 688	$ 1,282	$ 1,951	$ 3,561

The gross interest income that would have been recorded in the period on troubled debt restructurings and nonaccrual loans, if the loans had been current in accordance with their original terms and had been outstanding throughout the period or since origination, if held for part of the period.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration