Retirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2020

Defined Benefit Plan [Abstract]

Schedule of Defined Benefit Plans Disclosures

The following tables provide the components of net periodic benefit costs for the three-month periods ended March 31, 2020 and 2019.

	Employees'			Select Executive		Postretirement
	Pension			Retirement		Benefit
	Plan			Plan		Plans
Net Periodic Benefit Cost
For the Three Months Ended March 31, 2020
Service Cost 1	$	430		$	103	$	33
Interest Cost 2	417			54		78
Expected Return on Plan Assets 2	(904		)	—		—
Amortization of Prior Service Cost 2	16			11		27
Amortization of Net Loss 2	1			33		2
Net Periodic Cost	$	(40	)	$	201	$	140
Plan Contributions During the Period	$	—		$	117	$	78
For the Three Months Ended March 31, 2019:
Service Cost 1	$	399		$	97	$	30
Interest Cost 2	397			52		89
Expected Return on Plan Assets 2	(770		)	—		—
Amortization of Prior Service Cost 2	17			14		25
Amortization of Net Loss 2	153			27		(17		)
Net Periodic (Benefit) Cost	$	196		$	190	$	127
Plan Contributions During the Period	$	—		$	116	$	37

Footnotes:

1. Included in Salaries and Employee Benefits on the Consolidated Statements of Income

2. Included in Other Operating Expense on the Consolidated Statements of Income