Pension Plan (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016 and 2015:

	2016			2015
	(000s)
Change in plan assets:
Fair value of plan assets at beginning of year	$	106,839		$	116,697
Actual return (loss) on plan assets		8,858			(3,223	)
Benefits paid		(5,651	)		(6,086	)
Administrative expenses		(369	)		(549	)
Fair value of plan assets at end of year	$	109,677		$	106,839
Change in benefit obligation:
Benefit obligation at beginning of year	$	118,180		$	127,342
Service cost		926			1,051
Interest cost		4,997			4,912
Benefits paid		(5,651	)		(6,086	)
Actuarial (gain) loss		(7,503	)		(9,039	)
Benefit obligation at end of year	$	110,949		$	118,180
Amounts recognized in the Consolidated Balance Sheet:
Other non-current liabilities		1,272			11,341
Total amounts recognized at end of year	$	1,272		$	11,341

Components of Net Periodic Pension Cost (Benefit)

	2016			2015			2014
	(000s)
Components of net periodic cost (benefit)
Service cost	$	926		$	1,051		$	966
Interest cost		4,997			4,912			4,985
Expected return on plan assets		(5,708	)		(6,254	)		(7,772	)
Recognized actuarial loss		3,072			3,164			1,107
Net periodic cost	$	3,287		$	2,873		$	(714	)

Measurement Dates

	2016	2015
Measurement Dates
Benefit obligations	12/31/2016	12/31/2015
Fair value of plan assets	12/31/2016	12/31/2015

Weighted-average Assumptions for Net Periodic Benefit Cost

	2016			2015
Weighted average assumptions as of December 31
Discount rate		4.14	%		4.34	%
Rate of compensation increase		4.00	%		4.00	%

Weighted Average Assumptions

	2016			2015			2014
Weighted-average assumptions for net periodic benefit    cost calculations
Discount rate		4.34	%		3.95	%		4.95	%
Expected long-term rate of return on plan assets		5.50	%		5.50	%		7.50	%
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, 2016 and December 31, 2015 by asset category are as follows:

	2016		2015
Equities:
U.S. Large Cap	$	8,547	$	8,520
U.S. Mid Cap		2,651		2,613
U.S. Small Cap		2,669		2,649
International Developed		6,534		6,406
Emerging Markets		4,360		4,114
Fixed income:
Core Fixed Income		23,719		23,782
Long Duration Fixed Income		58,312		55,931
Real Estate:
REIT Fund		2,216		2,212
Cash/Currency:				0
Cash Equivalents		669		612
Total market value	$	109,677	$	106,839

Estimated Future Benefit

There will be benefit payments under this plan beyond 2026.

Estimated Future Benefit Payments (000s)
2017	$	6,180
2018		6,421
2019		6,596
2020		6,716
2021		6,799
2022-2026		34,353
Total	$	67,065

Plan Assets

	2016			2015
Plan Assets
Asset Category
Equity securities		23	%		23	%
Fixed income securities		75	%		75	%
Other		2	%		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 12/31/2016			PermittedRange
Total Equity		23	%	10-30%
Total Fixed Income		75	%	70-90%
Other		2	%	0-10%