Note 12—Benefit Plans

Other Post-retirement Benefits - Medical

We sponsor a post-retirement medical plan to provide health care coverage continuation from the date of retirement to age 65 for qualifying employees. Employees hired before 2006 are generally eligible to participate in the plan after five years of service and reaching the age of 55 and will pay 20% of the monthly insurance premium. Employees hired after 2006 are generally eligible to participate in the plan after five years of service and reaching the age of 55 and are required to pay 100% of the monthly insurance premium; however, after 10 years of service, they are only required to pay 50% of the monthly insurance premium.

The components of the net periodic benefit cost related to our defined benefit plan consist of the following (in thousands):



	Three Months Ended September 30, 2015		Nine Months Ended September 30, 2015
Service cost	$	93	$	278
Interest cost	53		159
Amortization of prior service cost	2		6
Net periodic benefit cost	$	148	$	443