INVESTMENT SECURITIES (Details) - USD ($) |
Sep. 30, 2019 |
Dec. 31, 2018 |
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|---|---|---|---|---|---|
| Available-for-sale | |||||
| Amortized Cost | $ 376,101,000 | $ 448,705,000 | |||
| Unrealized Gains | 1,515,000 | 727,000 | |||
| Unrealized Losses | 635,000 | 3,275,000 | |||
| Market Value | 376,981,000 | 446,157,000 | |||
| Held to Maturity | |||||
| Amortized Cost | 240,303,000 | 217,320,000 | |||
| Unrealized Gains | 1,866,000 | 220,000 | |||
| Unrealized Losses | 282,000 | 3,127,000 | |||
| Market Value | 241,887,000 | 214,413,000 | |||
| Total | |||||
| Amortized Cost | 616,404,000 | 666,025,000 | |||
| Unrealized Gain | 3,381,000 | 947,000 | |||
| Unrealized Loss | 917,000 | 6,402,000 | |||
| Fair Value | 618,868,000 | 660,570,000 | |||
| U.S. Government Treasury [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | 216,707,000 | 264,298,000 | |||
| Unrealized Gains | 858,000 | 167,000 | |||
| Unrealized Losses | 300,000 | 2,616,000 | |||
| Market Value | 217,265,000 | 261,849,000 | |||
| Held to Maturity | |||||
| Amortized Cost | 25,050,000 | 35,088,000 | |||
| Unrealized Gains | 10,000 | 0 | |||
| Unrealized Losses | 46,000 | 477,000 | |||
| Market Value | 25,014,000 | 34,611,000 | |||
| U.S. Government Agency [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | 137,798,000 | 133,201,000 | |||
| Unrealized Gains | 572,000 | 520,000 | |||
| Unrealized Losses | 332,000 | 515,000 | |||
| Market Value | 138,038,000 | 133,206,000 | |||
| States and Political Subdivisions [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | 13,041,000 | 42,509,000 | |||
| Unrealized Gains | 6,000 | 0 | |||
| Unrealized Losses | 3,000 | 144,000 | |||
| Market Value | 13,044,000 | 42,365,000 | |||
| Held to Maturity | |||||
| Amortized Cost | 3,356,000 | 6,512,000 | |||
| Unrealized Gains | 0 | 0 | |||
| Unrealized Losses | 1,000 | 26,000 | |||
| Market Value | 3,355,000 | 6,486,000 | |||
| Mortgage-Backed Securities [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | 708,000 | 903,000 | |||
| Unrealized Gains | 79,000 | 40,000 | |||
| Unrealized Losses | 0 | 0 | |||
| Market Value | 787,000 | 943,000 | |||
| Held to Maturity | |||||
| Amortized Cost | 211,897,000 | 175,720,000 | |||
| Unrealized Gains | 1,856,000 | 220,000 | |||
| Unrealized Losses | 235,000 | 2,624,000 | |||
| Market Value | 213,518,000 | 173,316,000 | |||
| Equity Securities [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | [1] | 7,847,000 | 7,794,000 | ||
| Unrealized Gains | 0 | 0 | |||
| Unrealized Losses | 0 | 0 | |||
| Market Value | [1] | 7,847,000 | 7,794,000 | ||
| Federal Home Loan Bank | 3,100,000 | 3,000,000 | |||
| Federal Reserve Bank stock | $ 4,800,000 | $ 4,800,000 | |||
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