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EMPLOYEE BENEFIT PLANS - Estimates that future benefits payable for Retirement Income Plan (Details) (Retirement Income Plan, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Retirement Income Plan
 
Defined Benefit Plan Disclosure [Line Items]  
2013 $ 253
2014 257
2015 270
2016 280
2017 259
2018-2022 $ 1,323