Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT SECURITIES (Unrealized Losses on Investment Securities) (Details)

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INVESTMENT SECURITIES (Unrealized Losses on Investment Securities) (Details) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Available-for-sale securities    
Less Than 12 Months, Fair Value $ 235,195,000 $ 246,748,000
Less Than 12 Months, Unrealized Losses 1,165,000 1,541,000
12 Months Or Longer, Fair Value 4,416,000 6,993,000
12 Months Or Longer, Unrealized Losses 17,000 35,000
Total Fair Value 239,611,000 253,741,000
Total Unrealized Losses 1,182,000 1,576,000
Held-to-maturity debt securities    
Less Than 12 Months, Fair Value 85,661,000 79,411,000
Less Than 12 Months, Unrealized Losses 694,000 718,000
12 Months Or Longer, Fair Value 3,404,000 4,010,000
12 Months Or Longer, Unrealized Losses 37,000 38,000
Total Fair Value 89,065,000 83,421,000
Total Unrealized Losses 731,000 756,000
U.S. Government Treasury [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 133,781,000 116,704,000
Less Than 12 Months, Unrealized Losses 778,000 851,000
12 Months Or Longer, Fair Value 0 0
12 Months Or Longer, Unrealized Losses 0 0
Total Fair Value 133,781,000 116,704,000
Total Unrealized Losses 778,000 851,000
U.S. Government Agency [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 52,628,000 48,520,000
Less Than 12 Months, Unrealized Losses 278,000 310,000
12 Months Or Longer, Fair Value 3,871,000 6,699,000
12 Months Or Longer, Unrealized Losses 15,000 34,000
Total Fair Value 56,499,000 55,219,000
Total Unrealized Losses 293,000 344,000
States and Political Subdivisions [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 48,786,000 81,521,000
Less Than 12 Months, Unrealized Losses 109,000 380,000
12 Months Or Longer, Fair Value 542,000 294,000
12 Months Or Longer, Unrealized Losses 2,000 1,000
Total Fair Value 49,328,000 81,815,000
Total Unrealized Losses 111,000 381,000
Mortgage-Backed Securities [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 0 3,000
Less Than 12 Months, Unrealized Losses 0 0
12 Months Or Longer, Fair Value 3,000 0
12 Months Or Longer, Unrealized Losses 0 0
Total Fair Value 3,000 3,000
Total Unrealized Losses 0 0
U.S. Government Treasury [Member]    
Held-to-maturity debt securities    
Less Than 12 Months, Fair Value 47,679,000 35,210,000
Less Than 12 Months, Unrealized Losses 98,000 81,000
12 Months Or Longer, Fair Value 0 0
12 Months Or Longer, Unrealized Losses 0 0
Total Fair Value 47,679,000 35,210,000
Total Unrealized Losses 98,000 81,000
U.S. Government Agency [Member]    
Held-to-maturity debt securities    
Less Than 12 Months, Fair Value 0 0
Less Than 12 Months, Unrealized Losses 0 0
12 Months Or Longer, Fair Value 0 0
12 Months Or Longer, Unrealized Losses 0 0
Total Fair Value 0 0
Total Unrealized Losses 0 0
States and Political Subdivisions [Member]    
Held-to-maturity debt securities    
Less Than 12 Months, Fair Value 2,545,000 7,491,000
Less Than 12 Months, Unrealized Losses 4,000 38,000
12 Months Or Longer, Fair Value 0 0
12 Months Or Longer, Unrealized Losses 0 0
Total Fair Value 2,545,000 7,491,000
Total Unrealized Losses 4,000 38,000
Mortgage-Backed Securities [Member]    
Held-to-maturity debt securities    
Less Than 12 Months, Fair Value 35,437,000 36,710,000
Less Than 12 Months, Unrealized Losses 592,000 599,000
12 Months Or Longer, Fair Value 3,404,000 4,010,000
12 Months Or Longer, Unrealized Losses 37,000 38,000
Total Fair Value 38,841,000 40,720,000
Total Unrealized Losses $ 629,000 $ 637,000