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Note 20 - Derivative Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified | 0 Months Ended | 3 Months Ended | 6 Months Ended | 19 Months Ended |
--- | --- | --- | --- | --- | ---
May 18, 2012 | Aug. 05, 2011 | Feb. 15, 2011 | Dec. 23, 2012 | Dec. 23, 2012 | Feb. 28, 2015 | May 31, 2013
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge | 5 years | 21 months | 27 months |  |  |  |
Notional Amount of Interest Rate Cash Flow Hedge Derivatives | $ 50,000 | $ 10,000 | $ 25,000 |  |  | $ 50,000 | $ 85,000
Derivative, Swaption Interest Rate |  | 0.75% | 1.39% | 1.06% | 1.06% |  |
Quarterly Decrease in Notional Amount of Interest Rate Cash Flow Hedge Derivatives |  |  |  |  |  | 5,000 |
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) |  |  |  |  | 145 |  |
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net |  |  |  | 92 |  |  |
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net |  |  |  | 551 | 551 |  |
Derivative Instruments, Loss Recognized in Income |  |  |  | $ 73 |  |  |

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