EMPLOYEE BENEFIT PLANS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Supplemental Executive Retirement Plan
Net period benefit cost
Service cost	$ 82	$ 67
Interest cost	94	102
Recognized net actuarial loss	56	29
Recognized prior service cost	5	5
Net period benefit cost	237	203
Other Postretirement Benefit Plan
Net period benefit cost
Service cost	19	17
Interest cost	35	37
Recognized net actuarial loss	11	8
Recognized prior service cost
Net period benefit cost	$ 65	$ 62