Note 6 - Debt and Equity Securities (Tables)
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12 Months Ended |
Dec. 31, 2017 |
Notes Tables |
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Trading Securities [Table Text Block] |
| | Amortized Cost | | Fair Value | | Gross Unrealized Gains | | Gross Unrealized Losses | | | (In thousands) | Securities held-to-maturity: | | | | | | | | | | | | | | | | | Municipals | | $ | 22,913 | | | $ | 21,889 | | | $ | - | | | $ | 1,024 | | | | | | | | | | | | | | | | | | | Total municipals | | | 22,913 | | | | 21,889 | | | | - | | | | 1,024 | | | | | | | | | | | | | | | | | | | FNMA | | | 7,973 | | | | 7,810 | | | | - | | | | 163 | | | | | | | | | | | | | | | | | | | Total mortgage-backed securities | | | 7,973 | | | | 7,810 | | | | - | | | | 163 | | | | | | | | | | | | | | | | | | | Total | | $ | 30,886 | | | $ | 29,699 | | | $ | - | | | $ | 1,187 | | | | Amortized Cost | | Fair Value | | Gross Unrealized Gains | | Gross Unrealized Losses | | | (In thousands) | Securities held-to-maturity: | | | | | | | | | | | | | | | | | Municipals | | $ | 37,735 | | | $ | 35,408 | | | $ | - | | | $ | 2,327 | | | | | | | | | | | | | | | | | | | Total | | $ | 37,735 | | | $ | 35,408 | | | $ | - | | | $ | 2,327 | | | | Amortized Cost | | Fair Value | | Gross Unrealized Gains | | Gross Unrealized Losses | | | (In thousands) | Corporate | | $ | 110,000 | | | $ | 102,767 | | | $ | - | | | $ | 7,233 | | Municipals | | | 101,680 | | | | 103,199 | | | | 1,519 | | | | - | | Mutual funds | | | 11,575 | | | | 11,575 | | | | - | | | | - | | Collateralized loan obligations | | | 10,000 | | | | 10,053 | | | | 53 | | | | - | | Other | | | 1,110 | | | | 1,110 | | | | - | | | | - | | Total other securities | | | 234,365 | | | | 228,704 | | | | 1,572 | | | | 7,233 | | REMIC and CMO | | | 328,668 | | | | 325,302 | | | | 595 | | | | 3,961 | | GNMA | | | 1,016 | | | | 1,088 | | | | 72 | | | | - | | FNMA | | | 136,198 | | | | 135,474 | | | | 330 | | | | 1,054 | | FHLMC | | | 48,103 | | | | 47,786 | | | | 18 | | | | 335 | | Total mortgage-backed securities | | | 513,985 | | | | 509,650 | | | | 1,015 | | | | 5,350 | | Total securities available for sale | | $ | 748,350 | | | $ | 738,354 | | | $ | 2,587 | | | $ | 12,583 | | | | Amortized Cost | | Fair Value | | Gross Unrealized Gains | | Gross Unrealized Losses | | | (In thousands) | Corporate | | $ | 110,000 | | | $ | 102,910 | | | $ | - | | | $ | 7,090 | | Municipals | | | 124,984 | | | | 126,903 | | | | 1,983 | | | | 64 | | Mutual funds | | | 21,366 | | | | 21,366 | | | | - | | | | - | | Collateralized loan obligations | | | 85,470 | | | | 86,365 | | | | 895 | | | | - | | Other | | | 7,363 | | | | 7,361 | | | | - | | | | 2 | | Total other securities | | | 349,183 | | | | 344,905 | | | | 2,878 | | | | 7,156 | | REMIC and CMO | | | 402,636 | | | | 401,370 | | | | 1,607 | | | | 2,873 | | GNMA | | | 1,319 | | | | 1,427 | | | | 108 | | | | - | | FNMA | | | 109,493 | | | | 108,351 | | | | 463 | | | | 1,605 | | FHLMC | | | 5,378 | | | | 5,328 | | | | 35 | | | | 85 | | Total mortgage-backed securities | | | 518,826 | | | | 516,476 | | | | 2,213 | | | | 4,563 | | Total securities available for sale | | $ | 868,009 | | | $ | 861,381 | | | $ | 5,091 | | | $ | 11,719 | |
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Investments Classified by Contractual Maturity Date [Table Text Block] |
| | Amortized Cost | | Fair Value | | | (In thousands) | | | | | | Due in one year or less | | $ | 1,045 | | | $ | 1,045 | | Due after ten years | | | 21,868 | | | | 20,844 | | Total other securities | | | 22,913 | | | | 21,889 | | Mortgage-backed securities | | | 7,973 | | | | 7,810 | | Total securities held-to-maturity | | $ | 30,886 | | | $ | 29,699 | | | | Amortized Cost | | Fair Value | | | (In thousands) | | | | | | Due in one year or less | | $ | - | | | $ | - | | Due after one year through five years | | | 4,306 | | | | 4,317 | | Due after five years through ten years | | | 129,931 | | | | 122,809 | | Due after ten years | | | 88,553 | | | | 90,003 | | | | | | | | | | | Total other securities | | | 222,790 | | | | 217,129 | | Mutual funds | | | 11,575 | | | | 11,575 | | Mortgage-backed securities | | | 513,985 | | | | 509,650 | | | | | | | | | | | Total securities available for sale | | $ | 748,350 | | | $ | 738,354 | |
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Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] |
| | | | Total | | Less than 12 months | | 12 months or more | | | Count | | Fair Value | | Unrealized Losses | | Fair Value | | Unrealized Losses | | Fair Value | | Unrealized Losses | | | (Dollars in thousands) | | | Held-to-maturity securities | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Municipals | | | 1 | | | $ | 20,844 | | | $ | 1,024 | | | $ | 20,844 | | | $ | 1,024 | | | $ | - | | | $ | - | | Total other securities | | | 1 | | | | 20,844 | | | | 1,024 | | | | 20,844 | | | | 1,024 | | | | - | | | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | FNMA | | | 1 | | | | 7,810 | | | | 163 | | | | 7,810 | | | | 163 | | | | - | | | | - | | Total mortgage-backed securities | | | 1 | | | | 7,810 | | | | 163 | | | | 7,810 | | | | 163 | | | | - | | | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Total securities held-to-maturity | | | 2 | | | $ | 28,654 | | | $ | 1,187 | | | $ | 28,654 | | | $ | 1,187 | | | $ | - | | | $ | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Available for sale securities | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Corporate | | | 14 | | | $ | 102,767 | | | $ | 7,233 | | | $ | 9,723 | | | $ | 277 | | | $ | 93,044 | | | $ | 6,956 | | Total other securities | | | 14 | | | | 102,767 | | | | 7,233 | | | | 9,723 | | | | 277 | | | | 93,044 | | | | 6,956 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | REMIC and CMO | | | 36 | | | | 249,596 | | | | 3,961 | | | | 162,781 | | | | 1,406 | | | | 86,815 | | | | 2,555 | | FNMA | | | 17 | | | | 120,510 | | | | 1,054 | | | | 109,258 | | | | 850 | | | | 11,252 | | | | 204 | | FHLMC | | | 2 | | | | 46,829 | | | | 335 | | | | 43,258 | | | | 294 | | | | 3,571 | | | | 41 | | Total mortgage-backed securities | | | 55 | | | | 416,935 | | | | 5,350 | | | | 315,297 | | | | 2,550 | | | | 101,638 | | | | 2,800 | | Total securities available for sale | | | 69 | | | $ | 519,702 | | | $ | 12,583 | | | $ | 325,020 | | | $ | 2,827 | | | $ | 194,682 | | | $ | 9,756 | | | | | | Total | | Less than 12 months | | 12 months or more | | | Count | | Fair Value | | Unrealized Losses | | Fair Value | | Unrealized Losses | | Fair Value | | Unrealized Losses | | | (Dollars in thousands) | | | Held-to-maturity securities | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Municipals | | | 1 | | | $ | 19,538 | | | $ | 2,327 | | | $ | 19,538 | | | $ | 2,327 | | | $ | - | | | $ | - | | Total securities held-to-maturity | | | 1 | | | $ | 19,538 | | | $ | 2,327 | | | $ | 19,538 | | | $ | 2,327 | | | $ | - | | | $ | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Available for sale securities | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Corporate | | | 14 | | | $ | 102,910 | | | $ | 7,090 | | | $ | 28,476 | | | $ | 1,524 | | | $ | 74,434 | | | $ | 5,566 | | Municipals | | | 4 | | | | 16,047 | | | | 64 | | | | 16,047 | | | | 64 | | | | - | | | | - | | Other | | | 1 | | | | 298 | | | | 2 | | | | - | | | | - | | | | 298 | | | | 2 | | Total other securities | | | 19 | | | | 119,255 | | | | 7,156 | | | | 44,523 | | | | 1,588 | | | | 74,732 | | | | 5,568 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | REMIC and CMO | | | 35 | | | | 222,807 | | | | 2,873 | | | | 208,827 | | | | 2,268 | | | | 13,980 | | | | 605 | | FNMA | | | 18 | | | | 80,924 | | | | 1,605 | | | | 74,972 | | | | 1,250 | | | | 5,952 | | | | 355 | | FHLMC | | | 1 | | | | 3,993 | | | | 85 | | | | 3,993 | | | | 85 | | | | - | | | | - | | Total mortgage-backed securities | | | 54 | | | | 307,724 | | | | 4,563 | | | | 287,792 | | | | 3,603 | | | | 19,932 | | | | 960 | | Total securities available for sale | | | 73 | | | $ | 426,979 | | | $ | 11,719 | | | $ | 332,315 | | | $ | 5,191 | | | $ | 94,664 | | | $ | 6,528 | |
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Schedule of Realized Gain (Loss) [Table Text Block] |
| | For the years ended December 31, | | | 2017 | | 2016 | | 2015 | | | (In thousands) | Gross gains from the sale of securities | | $ | 401 | | | $ | 2,370 | | | $ | 2,899 | | Gross losses from the sale of securities | | | (587 | ) | | | (846 | ) | | | (2,732 | ) | | | | | | | | | | | | | | Net (losses) gains from the sale of securities | | $ | (186 | ) | | $ | 1,524 | | | $ | 167 | |
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