Retirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2019

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, 2019 and 2018.

				Select
	Employees'			Executive		Postretirement
	Pension			Retirement		Benefit
	Plan			Plan		Plans
Net Periodic Benefit Cost
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 (Credit) 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
For the Three Months Ended March 31, 2018:
Service Cost 1	$	348		$	11	$	33
Interest Cost 2	525			50		99
Expected Return on Plan Assets 2	(785		)	—		—
Amortization of Prior Service (Credit) Cost 2	(12		)	14		(3		)
Amortization of Net Loss 2	33			33		(6		)
Net Periodic (Benefit) Cost	$	109		$	108	$	123
Plan Contributions During the Period	$	—		$	116	$	17

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