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Note 9 - Short-Term Borrowings (Details) - Outstanding Balances and Related Information of Short-Term Borrowings (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Outstanding Balances and Related Information of Short-Term Borrowings [Abstract] |  |  |
Balance at year-end | $ 10,809 | $ 6,538 | $ 7,392
Average balance outstanding | 8,806 | 7,005 | 7,276
Maximum month-end balance | $ 17,351 | $ 7,458 | $ 7,552
Weighted-average rate at year-end | 1.44% | 2.97% | 3.14%
Weighted-average rate during the year | 3.15% | 3.73% | 3.23%

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