FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available-for-Sale Securities:
Available-for-Sale Securities:	$ 393,703	$ 379,637
U.S. Treasury securities [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	1,001	1,010
Mortgage Backed Obligations of US Government Corporations and Agencies [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	106,773	110,907
Other Obligations of US Government Corporations and Agencies [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	23,596	20,970
Obligations of state and political subdivisions [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	226,452	211,134
Corporate debt securities [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	34,204	33,976
Marketable equity securities [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	1,677	1,640
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	1,677	1,640
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	392,026	377,997
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | U.S. Treasury securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | U.S. Treasury securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	1,001	1,010
Fair Value, Measurements, Recurring [Member] | U.S. Treasury securities [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Obligations of US Government Corporations and Agencies [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Obligations of US Government Corporations and Agencies [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	106,773	110,907
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Obligations of US Government Corporations and Agencies [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Other Obligations of US Government Corporations and Agencies [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Other Obligations of US Government Corporations and Agencies [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	23,596	20,970
Fair Value, Measurements, Recurring [Member] | Other Obligations of US Government Corporations and Agencies [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Obligations of state and political subdivisions [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Obligations of state and political subdivisions [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	226,452	211,134
Fair Value, Measurements, Recurring [Member] | Obligations of state and political subdivisions [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	34,204	33,976
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Marketable equity securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	1,677	1,640
Fair Value, Measurements, Recurring [Member] | Marketable equity securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	0	0
Fair Value, Measurements, Recurring [Member] | Marketable equity securities [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-Sale Securities:
Available-for-Sale Securities:	$ 0	$ 0