Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans

The following table sets forth the net periodic benefit cost recognized for the plans:

	Three months ended March 31,
	2015			2014
	(In thousands)
Net pension cost included the following components:
Service cost-benefits earned during the period	$	256		$	163
Interest cost on projected benefit obligation		239			174
Amortization of net obligation at transition		—			—
Amortization of prior service cost		(14	)		35
Recognized net actuarial loss		206			4
Net periodic pension cost	$	687		$	376