EMPLOYEE BENEFITS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
EMPLOYEE BENEFITS
Matching employer contributions under 401(k) Savings and Retirement plan	$ 4,200,000	$ 3,900,000	$ 3,500,000
Change in Benefit Obligation
Benefit obligation at the beginning of the period	20,230,000	17,510,000
Service cost	878,000	986,000
Interest cost	761,000	807,000
Amortization of (Gain)/Loss	40,000
Payments	(706,000)	(526,000)
Actuarial loss	1,174,000	1,453,000
Benefit obligation at the end of the period	22,377,000	20,230,000	17,510,000
Unfunded status	22,377,000
Net amount recognized	22,377,000
Amounts Recognized in the Consolidated Balance Sheet
Current Accrued liabilities	1,247,000
Non-Current Accrued liabilities	21,130,000
Total Accrued liabilities	22,377,000
Amount of taxes	440,000	546,000	177,000
Actuarial losses included in comprehensive losses	734,000	906,000	279,000
Weighted average assumptions used to determine the benefit obligation and net benefit cost
Discount rate, to determine the benefit obligation (as a percent)	3.25%	3.90%
Average rate of increase in compensation, to determine the benefit obligation (as a percent)	3.00%	3.00%
Discount rate, to determine net benefit cost (as a percent)	3.25%	3.90%
Average rate of increase in compensation, to determine net benefit cost (as a percent)	3.00%	3.00%
Estimated accumulated benefit obligation	22,400,000
Future payments under the Plan
2013	1,247,000
2014	1,578,000
2015	1,578,000
2016	1,578,000
2017	1,578,000
Thereafter	14,818,000
Total	$ 22,377,000	$ 20,230,000	$ 17,510,000