Note 4 - Securities (Tables)
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6 Months Ended |
Jun. 30, 2018 |
Notes Tables |
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Unrealized Gain (Loss) on Investments [Table Text Block] |
| | | | Gross | | Gross | | | | | | | | | | | | | | | | | | | | | June 30, 2018: | | | Securities Available for Sale | | | | | | | | | | | | | | | | | U.S. Treasury and government sponsored agencies | | $ | 58,072 | | | $ | 4 | | | $ | (965 | ) | | $ | 57,111 | | Mortgage-backed securities | | | 322,306 | | | | 515 | | | | (8,390 | ) | | | 314,431 | | State and municipal securities | | | 120,885 | | | | 411 | | | | (765 | ) | | | 120,531 | | Corporate debt | | | 91,412 | | | | 730 | | | | (666 | ) | | | 91,476 | | Total | | | 592,675 | | | | 1,660 | | | | (10,786 | ) | | | 583,549 | | Securities Held to Maturity | | | | | | | | | | | | | | | | | State and municipal securities | | | 250 | | | | - | | | | - | | | | 250 | | Total | | $ | 250 | | | $ | - | | | $ | - | | | $ | 250 | | | | | | | | | | | | | | | | | | | December 31, 2017: | | | | | | | | | | | | | | | | | Securities Available for Sale | | | | | | | | | | | | | | | | | U.S. Treasury and government sponsored agencies | | $ | 55,567 | | | $ | 38 | | | $ | (249 | ) | | $ | 55,356 | | Mortgage-backed securities | | | 278,177 | | | | 1,006 | | | | (2,685 | ) | | | 276,498 | | State and municipal securities | | | 134,641 | | | | 761 | | | | (553 | ) | | | 134,849 | | Corporate debt | | | 69,996 | | | | 1,416 | | | | (35 | ) | | | 71,377 | | Total | | | 538,381 | | | | 3,221 | | | | (3,522 | ) | | | 538,080 | | Securities Held to Maturity | | | | | | | | | | | | | | | | | State and municipal securities | | | 250 | | | | - | | | | - | | | | 250 | | Total | | $ | 250 | | | $ | - | | | $ | - | | | $ | 250 | |
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Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
| | June 30, 2018 | | December 31, 2017 | | | Amortized Cost | | Fair Value | | Amortized Cost | | Fair Value | | | (In thousands) | Debt securities available for sale | | | | | | | | | | | | | | | | | Due within one year | | $ | 47,313 | | | $ | 47,336 | | | $ | 22,122 | | | $ | 22,172 | | Due from one to five years | | | 202,998 | | | | 201,448 | | | | 160,773 | | | | 160,563 | | Due from five to ten years | | | 17,584 | | | | 17,767 | | | | 73,362 | | | | 74,684 | | Due after ten years | | | 2,474 | | | | 2,567 | | | | 3,947 | | | | 4,163 | | Mortgage-backed securities | | | 322,306 | | | | 314,431 | | | | 278,177 | | | | 276,498 | | | | $ | 592,675 | | | $ | 583,549 | | | $ | 538,381 | | | $ | 538,080 | | | | | | | | | | | | | | | | | | | Debt securities held to maturity | | | | | | | | | | | | | | | | | Due from one to five years | | $ | 250 | | | $ | 250 | | | $ | 250 | | | $ | 250 | | | | $ | 250 | | | $ | 250 | | | $ | 250 | | | $ | 250 | |
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Gain (Loss) on Securities [Table Text Block] |
| | Less Than Twelve Months | | Twelve Months or More | | Total | | | Gross | | | | Gross | | | | Gross | | | | | Unrealized | | | | Unrealized | | | | Unrealized | | | | | Losses | | Fair Value | | Losses | | Fair Value | | Losses | | Fair Value | | | (In Thousands) | June 30, 2018 | | | | | | | | | | | | | | | | | | | | | | | | | U.S. Treasury and government sponsored agencies | | $ | (809 | ) | | $ | 54,065 | | | $ | (156 | ) | | $ | 2,866 | | | $ | (965 | ) | | $ | 56,931 | | Mortgage-backed securities | | | (5,255 | ) | | | 228,217 | | | | (3,135 | ) | | | 67,375 | | | | (8,390 | ) | | | 295,592 | | State and municipal securities | | | (602 | ) | | | 66,356 | | | | (163 | ) | | | 7,872 | | | | (765 | ) | | | 74,228 | | Corporate debt | | | (666 | ) | | | 39,738 | | | | - | | | | - | | | | (666 | ) | | | 39,738 | | Total | | $ | (7,332 | ) | | $ | 388,376 | | | $ | (3,454 | ) | | $ | 78,113 | | | $ | (10,786 | ) | | $ | 466,489 | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2017 | | | | | | | | | | | | | | | | | | | | | | | | | U.S. Treasury and government sponsored agencies | | $ | (151 | ) | | $ | 33,401 | | | $ | (98 | ) | | $ | 2,926 | | | $ | (249 | ) | | $ | 36,327 | | Mortgage-backed securities | | | (986 | ) | | | 140,432 | | | | (1,699 | ) | | | 75,903 | | | | (2,685 | ) | | | 216,335 | | State and municipal securities | | | (450 | ) | | | 66,637 | | | | (103 | ) | | | 6,648 | | | | (553 | ) | | | 73,285 | | Corporate debt | | | (35 | ) | | | 6,955 | | | | - | | | | - | | | | (35 | ) | | | 6,955 | | Total | | $ | (1,622 | ) | | $ | 247,425 | | | $ | (1,900 | ) | | $ | 85,477 | | | $ | (3,522 | ) | | $ | 332,902 | |
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