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Note 16 - Stockholders' Equity (Detail) - Accumulated Other Comprehensive Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Beginning balance, net of tax | $ 465 |
Reclassification adjustment for net securities gains included in net income | (6,292) |
Reclassification adjustment for net securities gains included in net income | (2,645) |
Reclassification adjustment for net securities gains included in net income | (3,647) | (1,284)
Net unrealized gains arising from transferring securities held-to-maturity to available-for-sale | 38,052 |
Net unrealized gains arising from transferring securities held-to-maturity to available-for-sale | 15,997 |
Net unrealized gains arising from transferring securities held-to-maturity to available-for-sale | 22,055 |
Total other comprehensive income | 39,707 |
Total other comprehensive income | 16,695 |
Total other comprehensive income | 23,012 | 4,195
Ending balance, net of tax | 23,477 |
Net unrealized gains arising during the period | 7,947 |
Net unrealized gains arising during the period | 3,343 |
Net unrealized gains arising during the period | $ 4,604 |

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