Pension Plan (Tables)

12 Months Ended

Dec. 31, 2020

Compensation And Retirement Disclosure [Abstract]

Reconciliation of Defined Benefit Pension Plan

The following table shows the reconciliation of the defined benefit pension plan as of December 31, 2020 and 2019:

	2020			2019
	(000s)
Change in plan assets:
Fair value of plan assets at beginning of year	$	120,287		$	104,591
Actual return (loss) on plan assets		18,169			22,331
Benefits paid		(6,260	)		(6,168	)
Administrative expenses		(511	)		(467	)
Fair value of plan assets at end of year	$	131,685		$	120,287
Change in benefit obligation:
Benefit obligation at beginning of year	$	117,556		$	108,428
Service cost	$	615		$	725
Interest cost	$	3,357		$	4,237
Benefits paid	$	(6,260	)	$	(6,168	)
Actuarial (gain) loss	$	7,969		$	10,334
Benefit obligation at end of year	$	123,237		$	117,556
Amounts recognized in the Consolidated Balance Sheet:
Other non-current assets	$	8,449		$	2,731
Total amounts recognized at end of year	$	8,449		$	2,731

Components of Net Periodic Pension Cost (Benefit)

	2020			2019			2018
	(000s)
Components of net periodic cost (benefit)
Service cost	$	615		$	725		$	689
Interest cost		3,357			4,237			4,063
Expected return on plan assets		(5,261	)		(4,558	)		(5,197	)
Amortization of actuarial loss		—			1,533			—
Net periodic cost	$	(1,289	)	$	1,937		$	(445	)

Measurement Dates

	2020	2019
Measurement Dates
Benefit obligations	12/31/2020	12/31/2019
Fair value of plan assets	12/31/2020	12/31/2019

Weighted-average Assumptions for Net Periodic Benefit Cost

	2020			2019
Weighted average assumptions as of December 31
Discount rate		2.08	%		2.94	%
Rate of compensation increase		4.00	%		4.00	%

Weighted Average Assumptions

	2020			2019			2018
Weighted-average assumptions for net periodic benefit    cost calculations
Discount rate		2.94	%		4.03	%		3.60	%
Expected long-term rate of return on plan assets		4.50	%		4.50	%		4.50	%
Rate of compensation increase		4.00	%		4.00	%		4.00	%

Market Values of Our Pension Plan Assets

The market values of our pension plan assets at December 31, 2020 and December 31, 2019, reported using net asset value as a practical expedient, by asset category are as follows:

	2020		2019
Equities:
U.S. Large Cap	$	10,946	$	9,867
U.S. Mid Cap	$	3,403	$	3,054
U.S. Small Cap	$	3,581	$	3,160
International Developed	$	8,315	$	7,317
Emerging Markets	$	5,631	$	4,957
Fixed income:
Core Fixed Income	$	27,782	$	25,390
Long Duration Fixed Income	$	68,886	$	63,515
Real Estate:
REIT Fund	$	2,474	$	2,372
Cash/Currency:
Cash Equivalents	$	667	$	655
Total market value	$	131,685	$	120,287

Estimated Future Benefit

There will be benefit payments under this plan beyond 2030.

Estimated Future Benefit Payments (000s)
2021	$	6,790
2022		6,889
2023		6,920
2024		6,915
2025		6,886
2026-2030		33,298
Total	$	67,698

Plan Assets

	2020			2019
Plan Assets
Asset Category
Equity securities		24	%		24	%
Fixed income securities		73	%		74	%
Other		3	%		2	%
Total		100	%		100	%

Asset Allocation Policy and Ranges Established in accordance with Overall Risk and Return Objectives of Portfolio

The following asset allocation policy and ranges have been established in accordance with the overall risk and return objectives of the portfolio:

	As of 12/31/2020			Permitted Range
Total Equity		24	%	10-30%
Total Fixed Income		73	%	70-90%
Other		3	%	0-10%