Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2016

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,
	2016			2015
	(In thousands)
Net pension cost included the following components:
Service cost-benefits earned during the period	$	260		$	256
Interest cost on projected benefit obligation		256			239
Amortization of net obligation at transition		—			—
Amortization of prior service cost		(10	)		(14	)
Recognized net actuarial loss		138			206
Net periodic pension cost	$	644		$	687