INVESTMENT SECURITIES (Details) - USD ($) |
Jun. 30, 2019 |
Dec. 31, 2018 |
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|---|---|---|---|---|---|
| Available-for-sale | |||||
| Amortized Cost | $ 410,414,000 | $ 448,705,000 | |||
| Unrealized Gains | 1,457,000 | 727,000 | |||
| Unrealized Losses | 1,020,000 | 3,275,000 | |||
| Market Value | 410,851,000 | 446,157,000 | |||
| Held to Maturity | |||||
| Amortized Cost | 229,516,000 | 217,320,000 | |||
| Unrealized Gains | 1,622,000 | 220,000 | |||
| Unrealized Losses | 448,000 | 3,127,000 | |||
| Market Value | 230,690,000 | 214,413,000 | |||
| Total | |||||
| Amortized Cost | 639,930,000 | 666,025,000 | |||
| Unrealized Gain | 3,079,000 | 947,000 | |||
| Unrealized Loss | 1,468,000 | 6,402,000 | |||
| Fair Value | 641,541,000 | 660,570,000 | |||
| U.S. Government Treasury [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | 241,731,000 | 264,298,000 | |||
| Unrealized Gains | 908,000 | 167,000 | |||
| Unrealized Losses | 616,000 | 2,616,000 | |||
| Market Value | 242,023,000 | 261,849,000 | |||
| Held to Maturity | |||||
| Amortized Cost | 35,062,000 | 35,088,000 | |||
| Unrealized Gains | 7,000 | 0 | |||
| Unrealized Losses | 96,000 | 477,000 | |||
| Market Value | 34,973,000 | 34,611,000 | |||
| U.S. Government Agency [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | 138,046,000 | 133,201,000 | |||
| Unrealized Gains | 476,000 | 520,000 | |||
| Unrealized Losses | 395,000 | 515,000 | |||
| Market Value | 138,127,000 | 133,206,000 | |||
| States and Political Subdivisions [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | 22,067,000 | 42,509,000 | |||
| Unrealized Gains | 8,000 | 0 | |||
| Unrealized Losses | 9,000 | 144,000 | |||
| Market Value | 22,066,000 | 42,365,000 | |||
| Held to Maturity | |||||
| Amortized Cost | 4,833,000 | 6,512,000 | |||
| Unrealized Gains | 1,000 | 0 | |||
| Unrealized Losses | 3,000 | 26,000 | |||
| Market Value | 4,831,000 | 6,486,000 | |||
| Mortgage-Backed Securities [Member] | |||||
| Available-for-sale | |||||
| Amortized Cost | 723,000 | 903,000 | |||
| Unrealized Gains | 65,000 | 40,000 | |||
| Unrealized Losses | 0 | 0 | |||
| Market Value | 788,000 | 943,000 | |||
| Held to Maturity | |||||
| Amortized Cost | 189,621,000 | 175,720,000 | |||
| Unrealized Gains | 1,614,000 | 220,000 | |||
| Unrealized Losses | 349,000 | 2,624,000 | |||
| Market Value | 190,886,000 | 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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