Pension Plan (Tables)

12 Months Ended

Dec. 31, 2018

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, 2018 and 2017:

	2018			2017
	(000s)
Change in plan assets:
Fair value of plan assets at beginning of year	$	118,667		$	109,677
Actual return (loss) on plan assets		(7,522	)		15,533
Benefits paid		(6,031	)		(5,846	)
Administrative expenses		(523	)		(697	)
Fair value of plan assets at end of year	$	104,591		$	118,667
Change in benefit obligation:
Benefit obligation at beginning of year	$	116,056		$	110,949
Service cost		689			721
Interest cost		4,063			4,465
Benefits paid		(6,031	)		(5,846	)
Actuarial (gain) loss		(6,350	)		5,767
Benefit obligation at end of year	$	108,427		$	116,056
Amounts recognized in the Consolidated Balance Sheet:
Other non-current assets					2,611
Other non-current liabilities		3,836
Total amounts recognized at end of year	$	3,836		$	2,611

Components of Net Periodic Pension Cost (Benefit)

	2018			2017			2016
	(000s)
Components of net periodic cost (benefit)
Service cost	$	689		$	721		$	926
Interest cost		4,063			4,465			4,997
Expected return on plan assets		(5,197	)		(5,862	)		(5,708	)
Amortization of actuarial loss		—			863			3,072
Net periodic cost	$	(445	)	$	187		$	3,287

Measurement Dates

	2018	2017
Measurement Dates
Benefit obligations	12/31/2018	12/31/2017
Fair value of plan assets	12/31/2018	12/31/2017

Weighted-average Assumptions for Net Periodic Benefit Cost

	2018			2017
Weighted average assumptions as of December 31
Discount rate		4.03	%		3.60	%
Rate of compensation increase		4.00	%		4.00	%

Weighted Average Assumptions

	2018			2017			2016
Weighted-average assumptions for net periodic benefit    cost calculations
Discount rate		3.60	%		4.14	%		4.34	%
Expected long-term rate of return on plan assets		4.50	%		5.50	%		5.50	%
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, 2018 and December 31, 2017, reported using net asset value as a practical expedient, by asset category are as follows:

	2018		2017
Equities:
U.S. Large Cap	$	7,711	$	9,393
U.S. Mid Cap		2,309		2,937
U.S. Small Cap		2,094		3,005
International Developed		5,710		7,213
Emerging Markets		4,137		4,792
Fixed income:
Core Fixed Income		24,617		25,915
Long Duration Fixed Income		55,318		62,522
Real Estate:
REIT Fund		2,037		2,370
Cash/Currency:
Cash Equivalents		658		520
Total market value	$	104,591	$	118,667

Estimated Future Benefit

There will be benefit payments under this plan beyond 2028.

Estimated Future Benefit Payments (000s)
2019	$	6,595
2020		6,744
2021		6,834
2022		6,891
2023		6,921
2024-2028		34,270
Total	$	68,255

Plan Assets

	2018			2017
Plan Assets
Asset Category
Equity securities		21	%		23	%
Fixed income securities		76	%		75	%
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 12/31/2018			PermittedRange
Total Equity		21	%	10-30%
Total Fixed Income		76	%	70-90%
Other		3	%	0-10%