Pension and Other Postretirement Plans (Tables)

3 Months Ended

Mar. 31, 2015

Defined Benefit Pension Plans [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Periodic Benefit Costs

The following table summarizes the components of net periodic benefit cost.

	Three Months Ended
	March 31,
	2015			2014
	(In thousands)
Service cost	$	51		42
Interest cost	246			240
Expected return on plan assets	(330		)	(320	)
Amortization of prior service cost	1			1
Amortization of net loss	196			105
Net periodic benefit cost	$	164		68

Chairman and President Non-Qualified Defined Benefit Plans [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Periodic Benefit Costs

The following table summarizes the components of net periodic benefit costs for the Chairman and President's nonqualified defined benefit plans.

	Three Months Ended
	March 31,
	2015		2014
	(In thousands)
Service cost	$	64	73
Interest cost	219		251
Amortization of prior service cost	15		15
Amortization of net loss	378		323
Net periodic benefit cost	$	676	662

Defined Benefit Postretirement Healthcare Plans [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Periodic Benefit Costs

The following table summarizes the components of net periodic benefit costs.

	Three Months Ended
	March 31,
	2015		2014
	(In thousands)
Interest cost	$	32	28
Amortization of prior service cost	26		26
Amortization of net loss	15		(1	)
Net periodic benefit cost	$	73	53