BENEFIT PLANS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in benefit obligation [Roll forward]
Benefit obligation at beginning of year	$ 56,749	$ 51,709
Interest cost	2,235	2,295	2,349
Effect of change in assumptions	(5,528)	4,101
Benefits paid	(1,720)	(1,513)
Effect of change in experience	111	157
Benefit obligations at end of year	51,847	56,749	51,709
Change in plan assets [Roll forward]
Fair value of plan assets at beginning of year	41,414	38,896
Actual return on plan assets	8,054	4,155
Employer contribution	0	0
Benefits paid including assumed expenses	(1,884)	(1,637)
Fair value of plan assets at end of year	47,584	41,414	38,896
Funded status	(4,263)	(15,335)
Net loss not yet recognized in net periodic pension cost	14,685	25,859
Net periodic defined benefit pension expense [Abstract]
Service cost	164	124	116
Interest cost on projected benefit obligation	2,235	2,295	2,349
Expected return on plan assets	(2,931)	(2,758)	(2,785)
Net amortization and deferral	634	562	305
Net periodic benefit cost	102	223	(15)
Defined Contribution Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Contribution Plan, Minimum Employee Contribution	1.00%
Eligibility for participation, minimum days of employment (in days)	30
Automatic enrollment, percentage of base compensation (in hundredths)	3.00%
Annual increases in contribution percentage (in hundredths)	1.00%
Maximum contribution percentage for automatic enrollment (in hundredths)	7.00%
Employer matching contribution (in hundredths)	50.00%
Maximum percentage of employee contribution that employer will match at 50% (in hundredths)	7.00%
Defined Contribution Plan, Matching Contributions	3,822	3,894	3,883
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Basis of benefits, number of consecutive years of highest compensation (in years)	five
Basis of benefits, number of last consecutive years of employment (in years)	ten
Employee's Plan compensation, maximum per year	$ 50