EMPLOYEE BENEFIT PLANS (Details 2) (USD $)	Dec. 31, 2012
Net periodic benefit cost recognized
Anticipated contributions by the company during the calendar year 2013	$ 2,469,000
Pension Benefits
Benefits expected to be paid
2013	3,004,000
2014	2,445,000
2015	3,152,000
2016	3,631,000
2017	3,930,000
Years 2018-2022	25,510,000
Other Benefits Net of Medicare Part D Adjustment
Benefits expected to be paid
2013	902,000
2014	926,000
2015	983,000
2016	1,032,000
2017	1,068,000
Years 2018-2022	5,637,000
Medicare Part D Adjustments
2013	78,000
2014	90,000
2015	99,000
2016	106,000
2017	116,000
Years 2018-2022	$ 804,000