EMPLOYEE BENEFITS (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2004 payment	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)
EMPLOYEE BENEFITS
Matching employer contributions under 401(k) Savings and Retirement plan		$ 6,200	$ 6,000	$ 4,200
Supplemental Executive Retirement Plan (SERP)
Number of annual payments upon retirement | payment	15
Average remaining service period		10 years 8 months 12 days
Change in Benefit Obligation
Benefit obligation at the beginning of the year		$ 21,606	23,014	20,830
Service cost		518	556	894
Interest cost		807	713	782
Amortization of loss			121	40
Payments		(1,271)	(1,247)	(706)
Actuarial loss (gain)		1,394	(1,551)	1,174
Benefit obligation at the end of the year		$ 23,054	$ 21,606	$ 23,014
Unfunded status					$ 23,054
Net amount recognized					23,054
Amounts Recognized in the Consolidated Balance Sheet
Current: Accrued compensation related costs					1,799
Long-Term Liabilities: Other liabilities					21,255
Total accrued benefit obligation					23,054
Other comprehensive loss- actuarial (losses) gains					$ (1,400)	$ 1,600	$ (1,200)
Weighted average assumptions used to determine the benefit obligation and net benefit cost
Discount rate, to determine the benefit obligation (as a percent)					3.34%	4.03%	3.25%
Discount rate, to determine net benefit cost (as a percent)		3.34%	4.03%	3.25%
Average rate of increase in compensation, to determine the benefit obligation (as a percent)					3.00%	3.00%	3.00%
Average rate of increase in compensation, to determine net benefit cost (as a percent)		3.00%	3.00%	3.00%
Future payments under the Plan
2015					$ 1,847
2016					1,847
2017					1,847
2018					1,920
2019					1,920
Thereafter					13,673
Total		$ 21,606	$ 23,014	$ 20,830	$ 23,054	$ 21,606	$ 23,014