EMPLOYEE BENEFITS (Details 5) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits
Employee benefits
Total plan assets	$ 27,914	$ 24,562	$ 23,887
Carrying Amount | Recurring basis
Employee benefits
Total plan assets	27,914	24,562
Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets	19,588	17,385
Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets	8,326	7,177
Cash Equivalents | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	822	1,150
Cash Equivalents | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets		1,129
Cash Equivalents | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets	822	21
Cash | Carrying Amount | Recurring basis
Employee benefits
Total plan assets		1,129
Cash | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets		1,129
Cash | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets
Short term investment funds | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	822	21
Short term investment funds | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets
Short term investment funds | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets	822	21
Equity Securities | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	17,882	15,272
Equity Securities | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets	17,882	15,272
Equity Securities | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets
U.S. Large cap | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	8,950	7,472
U.S. Large cap | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets	8,950	7,472
U.S. Large cap | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets
U.S. Mid cap/small cap | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	3,038	2,259
U.S. Mid cap/small cap | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets	3,038	2,259
U.S. Mid cap/small cap | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets
International | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	5,770	4,390
International | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets	5,770	4,390
International | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets
Equity blend | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	124	1,151
Equity blend | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets	124	1,151
Equity blend | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets
Fixed income securities | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	9,210	8,140
Fixed income securities | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets	1,706	984
Fixed income securities | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets	7,504	7,156
Government issues | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	1,948	1,329
Government issues | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets	1,706	984
Government issues | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets	242	345
Corporate bonds | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	1,795	1,308
Corporate bonds | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets
Corporate bonds | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets	1,795	1,308
Mortgage backed | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	960	562
Mortgage backed | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets
Mortgage backed | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets	960	562
High yield bonds and bond funds | Carrying Amount | Recurring basis
Employee benefits
Total plan assets	4,507	4,941
High yield bonds and bond funds | Quoted Prices In Active Markets for Identical Assets (Level 1) | Recurring basis
Employee benefits
Total plan assets
High yield bonds and bond funds | Significant Other Observable Inputs (Level 2) | Recurring basis
Employee benefits
Total plan assets	$ 4,507	$ 4,941