Note 4 - Securities (Tables)
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3 Months Ended |
Mar. 31, 2019 |
Notes Tables |
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Unrealized Gain (Loss) on Investments [Table Text Block] |
| | Amortized Cost | | Gross Unrealized Gain | | Gross Unrealized Loss | | Fair Value | March 31, 2019 | | | Available for sale debt securities | | | | | | | | | | | | | | | | | U.S. Treasury and government sponsored agencies | | $ | 74,285 | | | $ | 126 | | | $ | (330 | ) | | $ | 74,081 | | Mortgage-backed securities | | | 330,444 | | | | 1,392 | | | | (2,460 | ) | | | 329,376 | | State and municipal securities | | | 96,438 | | | | 280 | | | | (250 | ) | | | 96,468 | | Corporate debt | | | 131,802 | | | | 508 | | | | (539 | ) | | | 131,771 | | Total | | $ | 632,969 | | | $ | 2,306 | | | $ | (3,579 | ) | | $ | 631,696 | | Held to maturity debt securities | | | | | | | | | | | | | | | | | State and municipal securities | | $ | 250 | | | $ | – | | | $ | – | | | $ | 250 | | Total | | $ | 250 | | | $ | – | | | $ | – | | | $ | 250 | | | | | | | | | | | | | | | | | | | December 31, 2018 | | | | | | | | | | | | | | | | | Available for sale debt securities | | | | | | | | | | | | | | | | | U.S. Treasury and government sponsored agencies | | $ | 77,534 | | | $ | 78 | | | $ | (619 | ) | | $ | 76,993 | | Mortgage-backed securities | | | 309,244 | | | | 591 | | | | (5,531 | ) | | | 304,304 | | State and municipal securities | | | 106,465 | | | | 208 | | | | (679 | ) | | | 105,994 | | Corporate debt | | | 102,982 | | | | 668 | | | | (757 | ) | | | 102,893 | | Total | | $ | 596,225 | | | $ | 1,545 | | | $ | (7,586 | ) | | $ | 590,184 | |
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Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
| | March 31, 2019 | | December 31, 2018 | | | Amortized Cost | | Fair Value | | Amortized Cost | | Fair Value | | | (In thousands) | Available for sale debt securities | | | | | | | | | | | | | | | | | Due within one year | | $ | 35,222 | | | $ | 35,168 | | | $ | 38,343 | | | $ | 38,225 | | Due from one to five years | | | 170,094 | | | | 169,701 | | | | 167,873 | | | | 166,380 | | Due from five to ten years | | | 94,404 | | | | 94,605 | | | | 77,811 | | | | 78,276 | | Due after ten years | | | 2,805 | | | | 2,846 | | | | 2,954 | | | | 2,999 | | Mortgage-backed securities | | | 330,444 | | | | 329,376 | | | | 309,244 | | | | 304,304 | | | | $ | 632,969 | | | $ | 631,696 | | | $ | 596,225 | | | $ | 590,184 | | | | | | | | | | | | | | | | | | | Held to maturity debt securities | | | | | | | | | | | | | | | | | Due from one to five years | | $ | 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 Unrealized Losses | |
Fair Value
| | Gross Unrealized Losses | |
Fair Value
| | Gross Unrealized Losses | |
Fair Value
| | | (In Thousands) | March 31, 2019 | | | | | | | | | | | | | U.S. Treasury and government sponsored agencies | | $ | (5 | ) | | $ | 1,003 | | | $ | (325 | ) | | $ | 47,913 | | | $ | (330 | ) | | $ | 48,916 | | Mortgage-backed securities | | | (203 | ) | | | 40,066 | | | | (2,257 | ) | | | 187,872 | | | | (2,460 | ) | | | 227,938 | | State and municipal securities | | | (24 | ) | | | 4,394 | | | | (226 | ) | | | 41,231 | | | | (250 | ) | | | 45,625 | | Corporate debt | | | (238 | ) | | | 33,466 | | | | (301 | ) | | | 25,191 | | | | (539 | ) | | | 58,657 | | Total | | $ | (470 | ) | | $ | 78,929 | | | $ | (3,109 | ) | | $ | 302,207 | | | $ | (3,579 | ) | | $ | 381,136 | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2018 | | | | | | | | | | | | | | | | | | | | | | | | | U.S. Treasury and government sponsored agencies | | $ | (8 | ) | | $ | 1,001 | | | $ | (611 | ) | | $ | 50,878 | | | $ | (619 | ) | | $ | 51,880 | | Mortgage-backed securities | | | (539 | ) | | | 67,721 | | | | (4,992 | ) | | | 204,260 | | | | (5,531 | ) | | | 271,981 | | State and municipal securities | | | (101 | ) | | | 20,821 | | | | (578 | ) | | | 52,190 | | | | (679 | ) | | | 73,011 | | Corporate debt | | | (315 | ) | | | 36,245 | | | | (442 | ) | | | 13,474 | | | | (757 | ) | | | 49,718 | | Total | | $ | (963 | ) | | $ | 125,788 | | | $ | (6,623 | ) | | $ | 320,802 | | | $ | (7,586 | ) | | $ | 446,590 | |
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