RETIREMENT PLANS (Fair Value Measurements) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 36,880	$ 38,163	$ 34,711
Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17,618	18,511
Debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17,463	17,821
Real estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,799	1,831
Level 1 [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,437	1,412
Level 2 [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	16,181	17,099
Level 2 [Member] | Debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17,463	17,821
Level 2 [Member] | Real estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,799	$ 1,831