EMPLOYEE BENEFIT PLANS (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014 age	Dec. 31, 2013	Dec. 31, 2012
Defined Contribution Plan Disclosure [Line Items]
Nondiscretionary employer contribution, percent over social security limit	10.00%
Nondiscretionary employer contribution, percent up to social security limit	5.00%
Defined Contribution Plan, Nondiscretionary Requisite service hours	1000
Nondiscretionary requisite service period	1 year
Employee contribution percent	6.00%
Employer matching contribution percent	25.00%
Multiemployer Plans [Abstract]
Significance of contributions percentage	5.00%
Defined benefit plan expense	$ 1,500,000	$ 1,400,000	$ 1,600,000
Postretirement Benefits [Abstract]
Retirement age	65
Service period to be eligible for postretirement benefit	10 years
Death benefit	5,000
Supplemental Executive Retirement Plans [Abstract]
Plan assets	8,800,000	8,500,000
Incentive plans and discretionary bonus expense	8,500,000		7,800,000
Deferred Compensation Arrangements [Abstract]
Deferred compensation deferred	135,000	107,000	88,000
Deferred compensation, shares provided for the plan (in shares)	176,849	178,765
Deferred compensation, recorded liability	3,700,000	3,400,000
401(k) Restoration Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan expense	56,000
Employee Savings Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan expense	$ 4,242,000	$ 3,900,000	$ 3,600,000