Pension and Other Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2022

Defined Benefit Pension Plans

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			Six Months Ended
	June 30,			June 30,
	2022		2021	2022	2021
	(In thousands)
Service cost	$	33	30	66	60
Interest cost	145		131	290	263
Expected return on plan assets	(393)		(356)	(787)	(712)
Amortization of net loss	33		135	67	269
Net periodic benefit cost	$	(182)	(60)	(364)	(120)

Chairman and President Non-Qualified Defined Benefit Plans

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 non-qualified defined benefit plans.

	Three Months Ended			Six Months Ended
	June 30,			June 30,
	2022		2021	2022	2021
	(In thousands)
Service cost	$	259	309	519	618
Interest cost	279		260	557	521
Amortization of prior service cost	15		15	30	30
Amortization of net loss	585		1,283	1,169	2,565
Net periodic benefit cost	$	1,138	1,867	2,275	3,734

Postretirement Employment Plans Other Than Pension

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			Six Months Ended
	June 30,			June 30,
	2022		2021	2022	2021
	(In thousands)
Interest cost	$	43	37	86	74
Amortization of net loss	52		73	104	146
Net periodic benefit cost	$	95	110	190	220