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SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2017
SECURITIES |
Schedule of amortized cost and fair value of the available for sale and held to maturity |
|  | December 31, |
|  | 2017 |  |  | 2016 |
(In thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |  |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. GSE securities |  | $ | 57,994 |  |  | $ | — |  |  | $ | (1,180 | ) |  | $ | 56,814 |  |  | $ | 64,993 |  |  | $ | — |  |  | $ | (1,344 | ) |  | $ | 63,649 |
State and municipal obligations |  |  | 87,582 |  |  |  | 259 |  |  |  | (819 | ) |  |  | 87,022 |  |  |  | 117,292 |  |  |  | 212 |  |  |  | (1,339 | ) |  |  | 116,165 |
U.S. GSE residential mortgage-backed securities |  |  | 189,705 |  |  |  | 29 |  |  |  | (2,833 | ) |  |  | 186,901 |  |  |  | 160,446 |  |  |  | 16 |  |  |  | (2,414 | ) |  |  | 158,048 |
U.S. GSE residential collateralized mortgage obligations |  |  | 314,390 |  |  |  | 16 |  |  |  | (7,016 | ) |  |  | 307,390 |  |  |  | 373,098 |  |  |  | 149 |  |  |  | (5,736 | ) |  |  | 367,511 |
U.S. GSE commercial mortgage-backed securities |  |  | 6,017 |  |  |  | 2 |  |  |  | (40 | ) |  |  | 5,979 |  |  |  | 6,337 |  |  |  | 6 |  |  |  | (36 | ) |  |  | 6,307 |
U.S. GSE commercial collateralized mortgage obligations |  |  | 49,965 |  |  |  | — |  |  |  | (1,249 | ) |  |  | 48,716 |  |  |  | 56,148 |  |  |  | — |  |  |  | (956 | ) |  |  | 55,192 |
Other asset backed securities |  |  | 24,250 |  |  |  | — |  |  |  | (849 | ) |  |  | 23,401 |  |  |  | 24,250 |  |  |  | — |  |  |  | (1,697 | ) |  |  | 22,553 |
Corporate bonds |  |  | 46,000 |  |  |  | — |  |  |  | (2,307 | ) |  |  | 43,693 |  |  |  | 32,000 |  |  |  | — |  |  |  | (1,703 | ) |  |  | 30,297 |
Total available for sale |  |  | 775,903 |  |  |  | 306 |  |  |  | (16,293 | ) |  |  | 759,916 |  |  |  | 834,564 |  |  |  | 383 |  |  |  | (15,225 | ) |  |  | 819,722 |
Held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and municipal obligations |  |  | 60,762 |  |  |  | 972 |  |  |  | (64 | ) |  |  | 61,670 |  |  |  | 66,666 |  |  |  | 1,085 |  |  |  | (130 | ) |  |  | 67,621 |
U.S. GSE residential mortgage-backed securities |  |  | 11,424 |  |  |  | — |  |  |  | (261 | ) |  |  | 11,163 |  |  |  | 13,443 |  |  |  | — |  |  |  | (287 | ) |  |  | 13,156 |
U.S. GSE residential collateralized mortgage obligations |  |  | 54,250 |  |  |  | 244 |  |  |  | (666 | ) |  |  | 53,828 |  |  |  | 61,639 |  |  |  | 352 |  |  |  | (552 | ) |  |  | 61,439 |
U.S. GSE commercial mortgage-backed securities |  |  | 22,953 |  |  |  | 77 |  |  |  | (438 | ) |  |  | 22,592 |  |  |  | 28,772 |  |  |  | 136 |  |  |  | (509 | ) |  |  | 28,399 |
U.S. GSE commercial collateralized mortgage obligations |  |  | 31,477 |  |  |  | — |  |  |  | (845 | ) |  |  | 30,632 |  |  |  | 41,717 |  |  |  | 93 |  |  |  | (573 | ) |  |  | 41,237 |
Corporate bonds |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 11,000 |  |  |  | 26 |  |  |  | — |  |  |  | 11,026 |
Total held to maturity |  |  | 180,866 |  |  |  | 1,293 |  |  |  | (2,274 | ) |  |  | 179,885 |  |  |  | 223,237 |  |  |  | 1,692 |  |  |  | (2,051 | ) |  |  | 222,878 |
Total securities |  | $ | 956,769 |  |  | $ | 1,599 |  |  | $ | (18,567 | ) |  | $ | 939,801 |  |  | $ | 1,057,801 |  |  | $ | 2,075 |  |  | $ | (17,276 | ) |  | $ | 1,042,600 |
Schedule of securities having a continuous unrealized loss position aggregated by a period of time less than or greater than 12 months |
|  | December 31, |
|  | 2017 |  |  | 2016 |
|  | Less than 12 months |  |  | Greater than 12 months |  |  | Less than 12 months |  |  | Greater than 12 months |
|  | Estimated |  |  | Gross |  |  | Estimated |  |  | Gross |  |  | Estimated |  |  | Gross |  |  | Estimated |  |  | Gross |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(In thousands) |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. GSE securities |  | $ | — |  |  | $ | — |  |  | $ | 56,815 |  |  | $ | (1,180 | ) |  | $ | 63,649 |  |  | $ | (1,344 | ) |  | $ | — |  |  | $ | — |
State and municipal obligations |  |  | 35,350 |  |  |  | (301 | ) |  |  | 28,165 |  |  |  | (518 | ) |  |  | 78,883 |  |  |  | (1,338 | ) |  |  | 240 |  |  |  | (1 | )
U.S. GSE residential mortgage-backed securities |  |  | 107,408 |  |  |  | (1,153 | ) |  |  | 69,571 |  |  |  | (1,680 | ) |  |  | 140,514 |  |  |  | (2,409 | ) |  |  | 241 |  |  |  | (5 | )
U.S. GSE residential collateralized mortgage obligations |  |  | 77,705 |  |  |  | (759 | ) |  |  | 224,932 |  |  |  | (6,257 | ) |  |  | 319,197 |  |  |  | (5,221 | ) |  |  | 15,627 |  |  |  | (515 | )
U.S. GSE commercial mortgage-backed securities |  |  | 2,345 |  |  |  | (40 | ) |  |  | — |  |  |  | — |  |  |  | 2,573 |  |  |  | (36 | ) |  |  | — |  |  |  | — |
U.S. GSE commercial collateralized mortgage obligations |  |  | 452 |  |  |  | (1 | ) |  |  | 48,264 |  |  |  | (1,248 | ) |  |  | 48,901 |  |  |  | (886 | ) |  |  | 6,292 |  |  |  | (70 | )
Other asset backed securities |  |  | — |  |  |  | — |  |  |  | 23,401 |  |  |  | (849 | ) |  |  | — |  |  |  | — |  |  |  | 22,552 |  |  |  | (1,697 | )
Corporate bonds |  |  | 13,588 |  |  |  | (412 | ) |  |  | 30,105 |  |  |  | (1,895 | ) |  |  | 17,834 |  |  |  | (1,166 | ) |  |  | 12,463 |  |  |  | (537 | )
Total available for sale |  |  | 236,848 |  |  |  | (2,666 | ) |  |  | 481,253 |  |  |  | (13,627 | ) |  |  | 671,551 |  |  |  | (12,400 | ) |  |  | 57,415 |  |  |  | (2,825 | )
Held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and municipal obligations |  |  | 7,709 |  |  |  | (57 | ) |  |  | 1,009 |  |  |  | (7 | ) |  |  | 21,867 |  |  |  | (130 | ) |  |  | — |  |  |  | — |
U.S. GSE residential mortgage-backed securities |  |  | 1,359 |  |  |  | (16 | ) |  |  | 9,804 |  |  |  | (245 | ) |  |  | 13,156 |  |  |  | (287 | ) |  |  | — |  |  |  | — |
U.S. GSE residential collateralized mortgage obligations |  |  | 21,329 |  |  |  | (94 | ) |  |  | 21,112 |  |  |  | (572 | ) |  |  | 31,297 |  |  |  | (455 | ) |  |  | 3,873 |  |  |  | (97 | )
U.S. GSE commercial mortgage-backed securities |  |  | 8,789 |  |  |  | (121 | ) |  |  | 8,303 |  |  |  | (317 | ) |  |  | 12,860 |  |  |  | (286 | ) |  |  | 5,877 |  |  |  | (223 | )
U.S. GSE commercial collateralized mortgage obligations |  |  | 10,341 |  |  |  | (116 | ) |  |  | 20,290 |  |  |  | (729 | ) |  |  | 22,666 |  |  |  | (372 | ) |  |  | 3,790 |  |  |  | (201 | )
Total held to maturity |  | $ | 49,527 |  |  | $ | (404 | ) |  | $ | 60,518 |  |  | $ | (1,870 | ) |  | $ | 101,846 |  |  | $ | (1,530 | ) |  | $ | 13,540 |  |  | $ | (521 | )
Schedule of amortized cost, fair value and maturities of the available for sale and held to maturity investment securities portfolio |
|  | December 31, 2017 |
|  | Within |  |  | After One but |  |  | After Five but |  |  | After |  |  |  |
|  | One Year |  |  | Within Five Years |  |  | Within Ten Years |  |  | Ten Years |  |  | Total |
|  | Estimated |  |  |  |  |  | Estimated |  |  |  |  |  | Estimated |  |  |  |  |  | Estimated |  |  |  |  |  | Estimated |  |  |  |
|  | Fair |  |  | Amortized |  |  | Fair |  |  | Amortized |  |  | Fair |  |  | Amortized |  |  | Fair |  |  | Amortized |  |  | Fair |  |  | Amortized |
(In thousands) |  | Value |  |  | Cost |  |  | Value |  |  | Cost |  |  | Value |  |  | Cost |  |  | Value |  |  | Cost |  |  | Value |  |  | Cost |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. GSE securities |  | $ | — |  |  | $ | — |  |  | $ | 37,271 |  |  | $ | 37,994 |  |  | $ | 19,543 |  |  | $ | 20,000 |  |  | $ | — |  |  | $ | — |  |  | $ | 56,814 |  |  | $ | 57,994 |
State and municipal obligations |  |  | 9,588 |  |  |  | 9,600 |  |  |  | 45,196 |  |  |  | 45,683 |  |  |  | 31,809 |  |  |  | 31,884 |  |  |  | 429 |  |  |  | 415 |  |  |  | 87,022 |  |  |  | 87,582 |
U.S. GSE residential mortgage-backed securities |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 25,203 |  |  |  | 25,482 |  |  |  | 161,698 |  |  |  | 164,223 |  |  |  | 186,901 |  |  |  | 189,705 |
U.S. GSE residential collateralized mortgage obligations |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5,468 |  |  |  | 5,543 |  |  |  | 301,922 |  |  |  | 308,847 |  |  |  | 307,390 |  |  |  | 314,390 |
U.S. GSE commercial mortgage-backed securities |  |  | — |  |  |  | — |  |  |  | 5,979 |  |  |  | 6,017 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5,979 |  |  |  | 6,017 |
U.S. GSE commercial collateralized mortgage obligations |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 48,716 |  |  |  | 49,965 |  |  |  | 48,716 |  |  |  | 49,965 |
Other asset backed securities |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 23,401 |  |  |  | 24,250 |  |  |  | 23,401 |  |  |  | 24,250 |
Corporate bonds |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 43,693 |  |  |  | 46,000 |  |  |  | — |  |  |  | — |  |  |  | 43,693 |  |  |  | 46,000 |
Total available for sale |  |  | 9,588 |  |  |  | 9,600 |  |  |  | 88,446 |  |  |  | 89,694 |  |  |  | 125,716 |  |  |  | 128,909 |  |  |  | 536,166 |  |  |  | 547,700 |  |  |  | 759,916 |  |  |  | 775,903 |
Held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and municipal obligations |  |  | 3,766 |  |  |  | 3,774 |  |  |  | 17,610 |  |  |  | 17,430 |  |  |  | 38,599 |  |  |  | 37,882 |  |  |  | 1,695 |  |  |  | 1,676 |  |  |  | 61,670 |  |  |  | 60,762 |
U.S. GSE residential mortgage-backed securities |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5,011 |  |  |  | 5,103 |  |  |  | 6,152 |  |  |  | 6,321 |  |  |  | 11,163 |  |  |  | 11,424 |
U.S. GSE residential collateralized mortgage obligations |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,769 |  |  |  | 6,795 |  |  |  | 47,059 |  |  |  | 47,455 |  |  |  | 53,828 |  |  |  | 54,250 |
U.S. GSE commercial mortgage-backed securities |  |  | — |  |  |  | — |  |  |  | 9,373 |  |  |  | 9,311 |  |  |  | 4,916 |  |  |  | 5,022 |  |  |  | 8,303 |  |  |  | 8,620 |  |  |  | 22,592 |  |  |  | 22,953 |
U.S. GSE commercial collateralized mortgage obligations |  |  | — |  |  |  | — |  |  |  | 3,851 |  |  |  | 4,030 |  |  |  | — |  |  |  | — |  |  |  | 26,781 |  |  |  | 27,447 |  |  |  | 30,632 |  |  |  | 31,477 |
Total held to maturity |  |  | 3,766 |  |  |  | 3,774 |  |  |  | 30,834 |  |  |  | 30,771 |  |  |  | 55,295 |  |  |  | 54,802 |  |  |  | 89,990 |  |  |  | 91,519 |  |  |  | 179,885 |  |  |  | 180,866 |
Total securities |  | $ | 13,354 |  |  | $ | 13,374 |  |  | $ | 119,280 |  |  | $ | 120,465 |  |  | $ | 181,011 |  |  | $ | 183,711 |  |  | $ | 626,156 |  |  | $ | 639,219 |  |  | $ | 939,801 |  |  | $ | 956,769 |

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