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Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Components of net periodic benefit cost

The following tables provide the components of aggregate annual net periodic benefit cost for each of the years ended December 31, 2016, 2015, and 2014 and changes in the benefit obligation and the funded status of the pension, supplemental executive retirement and other postretirement benefit plans as recognized in the consolidated balance sheets as of December 31, 2016 and 2015.

Components of Net Periodic Benefit Cost
		Pension and Supplemental Executive Retirement Plans												Other Postretirement Benefits
(In thousands)		12/31/2016				12/31/2015				12/31/2014				12/31/2016				12/31/2015				12/31/2014
1. Company Service Cost		$	9,130			$	10,256			$	8,565			$	751			$	833			$	659
2. Interest Cost		15,906				15,847				15,987				704				697				653
3. Expected Return on Assets		(19,508		)		(21,109		)		(21,030		)		(4,886		)		(4,991		)		(4,648		)
4. Other Adjustments		—				—				—				—				—				—
Subtotal		5,528				4,994				3,522				(3,431		)		(3,461		)		(3,336		)
5. Amortization of :
a. Net Transition Obligation/(Asset)		—				—				—				—				—				—
b. Net Prior Service Cost/(Credit)		(687		)		(845		)		(930		)		(6,649		)		(6,649		)		(6,649		)
c. Net Losses/(Gains)		5,856				5,485				1,083				—				(175		)		(435		)
Total Amortization		5,169				4,640				153				(6,649		)		(6,824		)		(7,084		)
6. Net Periodic Benefit Cost		10,697				9,634				3,675				(10,080		)		(10,285		)		(10,420		)
7. Cost of settlements or curtailments		1,277				3,172				302				—				—				—
8. Total Expense for Year		$	11,974			$	12,806			$	3,977			$	(10,080	)		$	(10,285	)		$	(10,420	)

Development of funded status

Development of Funded Status
		Pension and Supplemental Executive Retirement Plans								Other Postretirement Benefits
(In thousands)		12/31/2016				12/31/2015				12/31/2016				12/31/2015
Actuarial Value of Benefit Obligations
1. Measurement Date		12/31/2016				12/31/2015				12/31/2016				12/31/2015
2. Accumulated Benefit Obligation		$	360,423			$	338,450			$	17,378			$	16,423
Funded Status/Asset (Liability) on the Consolidated Balance Sheet
1. Projected Benefit Obligation		$	(369,808	)		$	(349,483	)		$	(17,378	)		$	(16,423	)
2. Plan Assets at Fair Value		360,900				350,107				70,408				65,568
3. Funded Status - Overfunded/Asset		N/A				$	624			$	53,030			$	49,145
4. Funded Status - Underfunded/Liability		(8,908		)		N/A				N/A				N/A

Accumulated Other Comprehensive Income (Loss)
		Pension and Supplemental Executive Retirement Plans								Other Postretirement Benefits
(In thousands)		12/31/2016				12/31/2015				12/31/2016				12/31/2015
1. Net Actuarial (Gain)/Loss		$	103,861			$	95,636			$	(6,088	)		$	(5,311	)
2. Net Prior Service Cost/(Credit)		(2,286		)		(2,989		)		(11,991		)		(18,640		)
3. Net Transition Obligation/(Asset)		—				—				—				—
4. Total at Year End		$	101,575			$	92,647			$	(18,079	)		$	(23,951	)

Change in projected benefit obligation

The changes in the projected benefit obligation are as follows:

Change in Projected Benefit/Accumulated Benefit Obligation
		Pension and Supplemental Executive Retirement Plans								Other Postretirement Benefits
(In thousands)		12/31/2016				12/31/2015				12/31/2016				12/31/2015
1. Benefit Obligation at Beginning of Year		$	349,483			$	379,324			$	16,423			$	18,225
2. Company Service Cost		9,130				10,256				751				833
3. Interest Cost		15,906				15,847				704				697
4. Plan Participants' Contributions		—				—				408				361
5. Net Actuarial (Gain)/Loss due to Assumption Changes		14,450				(24,118		)		497				(2,083		)
6. Net Actuarial (Gain)/Loss due to Plan Experience		5,428				7,155				357				(397		)
7. Benefit Payments from Fund (1)		(21,831		)		(32,646		)		(1,678		)		(1,147		)
8. Benefit Payments Directly by Company		(2,669		)		(7,661		)		—				—
9. Plan Amendments		16				19				—				—
10. Other Adjustment		(105		)		1,307				(84		)		(66		)
11. Benefit Obligation at End of Year		$	369,808			$	349,483			$	17,378			$	16,423

⁽¹⁾  Includes lump sum payments of $11.2 million and $22.4 million in 2016 and 2015, respectively, from our pension plan to eligible participants, which were former employees with vested benefits.

Change in plan assets

The changes in the fair value of the net assets available for plan benefits are as follows:

Change in Plan Assets
		Pension and Supplemental Executive Retirement Plans								Other Postretirement Benefits
(In thousands)		12/31/2016				12/31/2015				12/31/2016				12/31/2015
1. Fair Value of Plan Assets at Beginning of Year		$	350,107			$	378,701			$	65,568			$	66,940
2. Company Contributions		11,369				17,311				—				—
3. Plan Participants' Contributions		—				—				408				361
4. Benefit Payments from Fund		(21,831		)		(32,646		)		(1,678		)		(1,147		)
5. Benefit Payments paid directly by Company		(2,669		)		(7,661		)		—				—
6. Actual Return on Assets		23,924				(5,094		)		6,518				(225		)
7. Other Adjustment		—				(504		)		(408		)		(361		)
8. Fair Value of Plan Assets at End of Year		$	360,900			$	350,107			$	70,408			$	65,568

Change in accumulated other comprehensive income (AOCI)

Change in Accumulated Other Comprehensive Income (Loss) ("AOCI")
		Pension and Supplemental Executive Retirement Plans								Other Postretirement Benefits
(In thousands)		12/31/2016				12/31/2015				12/31/2016				12/31/2015
1. AOCI in Prior Year		$	92,647			$	89,390			$	(23,951	)		$	(33,511	)
2. Increase/(Decrease) in AOCI
a. Recognized during year - Prior Service (Cost)/Credit		687				845				6,649				6,649
b. Recognized during year - Net Actuarial (Losses)/Gains		(5,856		)		(5,485		)		—				175
c. Occurring during year - Prior Service Cost		16				19				—				—
d. Occurring during year - Net Actuarial Losses/(Gains)		15,358				11,050				(777		)		2,736
e.  Occurring during year - Net Settlement Losses/(Gains)		(1,277		)		(3,172		)		—				—
f. Other adjustments		—				—				—				—
3. AOCI in Current Year		$	101,575			$	92,647			$	(18,079	)		$	(23,951	)

Amortizations expected to be recognized during next fiscal year

Amortizations Expected to be Recognized During Next Fiscal Year Ending
		Pension and Supplemental Executive Retirement Plans				Other Postretirement Benefits
(In thousands)		12/31/2017				12/31/2017
1. Amortization of Net Transition Obligation/(Asset)		$	—			$	—
2. Amortization of Prior Service Cost/(Credit)		(428		)		(6,649		)
3. Amortization of Net Losses/(Gains)		6,141				—

Actuarial assumptions

The projected benefit obligations, net periodic benefit costs and accumulated postretirement benefit obligation for the plans were determined using the following weighted average assumptions.

Actuarial Assumptions
	Pension and Supplemental Executive Retirement Plans						Other Postretirement Benefits
	12/31/2016			12/31/2015			12/31/2016			12/31/2015
Weighted-Average Assumptions Used to Determine
Benefit Obligations at year end
1. Discount Rate	4.30	%		4.65	%		3.95	%		4.30	%
2. Rate of Compensation Increase	3.00	%		3.00	%		N/A			N/A
Weighted-Average Assumptions Used to Determine
Net Periodic Benefit Cost for Year
1. Discount Rate	4.65	%		4.25	%		4.30	%		4.00	%
2. Expected Long-term Return on Plan Assets	5.75	%		5.75	%		7.50	%		7.50	%
3. Rate of Compensation Increase	3.00	%		3.00	%		N/A			N/A
Assumed Health Care Cost Trend Rates at year end
1. Health Care Cost Trend Rate Assumed for Next Year	N/A			N/A			6.50	%		7.00	%
2. Rate to Which the Cost Trend Rate is Assumed to Decline (Ultimate Trend Rate)	N/A			N/A			5.00	%		5.00	%
3. Year That the Rate Reaches the Ultimate Trend Rate	N/A			N/A			2020			2020

Year-end asset allocations of the plans

The year-end asset allocations of the plans are as follows:

Plan Assets
	Pension Plan						Other Postretirement Benefits
	12/31/2016			12/31/2015			12/31/2016			12/31/2015
1. Equity Securities	23	%		20	%		100	%		100	%
2. Debt Securities	77	%		80	%		—	%		—	%
3. Total	100	%		100	%		100	%		100	%

Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]

Schedule of investment allocation strategies

The equity investments utilize combinations of mutual funds, ETFs, and pooled equity account structures focused on the following strategies:

Strategy		Objective		Investment types
Return seeking growth		Funded ratio improvement over the long term		●	Global quality growth
				●	Global low volatility
Return seeking bridge		Downside protection in the event of a declining equity market		●	Enduring asset
				●	Durable company

Minimum and maximum allocation ranges for fixed income securities and equity securities

The primary focus in developing asset allocation ranges for the portfolio is the assessment of the portfolio's investment objectives and the level of risk that is acceptable to obtain those objectives.  To achieve these goals the minimum and maximum allocation ranges for fixed income securities and equity securities are:

	Minimum			Maximum
Equities (long only)	70	%		100	%
Real estate	0	%		15	%
Commodities	0	%		10	%
Fixed income/Cash	0	%		10	%

Actual and estimated future contributions and actual and estimated future benefit payments

The following tables show the current and estimated future contributions and benefit payments.

Company Contributions
		Pension and Supplemental Executive Retirement Plans				Other Postretirement Benefits
(In thousands)		12/31/2016				12/31/2016
Company Contributions for the Year Ending:
1. Current		$	11,369			$	—
2. Current + 1		9,500				—

Benefit Payments (Total)
		Pension and Supplemental Executive Retirement Plans				Other Postretirement Benefits
(In thousands)		12/31/2016				12/31/2016
Actual Benefit Payments for the Year Ending:
1. Current		$	24,500			$	1,355
Expected Benefit Payments for the Year Ending:
2. Current + 1		21,831				847
3. Current + 2		23,439				978
4. Current + 3		26,927				1,068
5. Current + 4		27,199				1,257
6. Current + 5		27,151				1,410
7. Current + 6 - 10		146,471				8,574

Effect of a 1% change in the health care trend rate assumption

A 1 percentage point change in the health care trend rate assumption would have the following effects on other postretirement benefits:

(In thousands)		1-Percentage Point Increase				1-Percentage Point Decrease
Effect on total service and interest cost components		$	237			$	(205	)
Effect on postretirement benefit obligation		2,382				(2,102		)

Pension Plan

Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]

Fair value of plan assets

The following table sets forth by level, within the fair value hierarchy, the pension plan assets at fair value as of December 31, 2016 and 2015. There were no securities that utilized Level 3 inputs.

Pension Plan
Assets at Fair Value as of December 31, 2016
(In thousands)		Level 1				Level 2				Total
Domestic Mutual Funds		$	11,805			$	—			$	11,805
Corporate Bonds		—				178,412				178,412
U.S. Government Securities		6,761				354				7,115
Municipal Bonds		—				63,492				63,492
Foreign Bonds		—				27,917				27,917
ETFs		5,694				—				5,694
Pooled Equity Accounts		—				66,465				66,465
Total Assets at fair value		$	24,260			$	336,640			$	360,900

Pension Plan
Assets at Fair Value as of December 31, 2015
(In thousands)		Level 1				Level 2				Total
Domestic Mutual Funds		$	1,442			$	—			$	1,442
Corporate Bonds		—				188,332				188,332
U.S. Government Securities		3,133				497				3,630
Municipal Bonds		—				61,206				61,206
Foreign Bonds		—				25,251				25,251
ETFs		5,676				—				5,676
Pooled Equity Accounts		—				64,570				64,570
Total Assets at fair value		$	10,251			$	339,856			$	350,107

Other Postretirement Benefit Plan

Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]

Fair value of plan assets

The following table sets forth the other postretirement benefits plan assets at fair value as of December 31, 2016 and 2015. All are Level 1 assets.

Other Postretirement Benefits Plan
Assets at Fair Value as of December 31, 2016
(In thousands)		Level 1				Total
Domestic Mutual Funds		$	54,426			$	54,426
International Mutual Funds		15,982				15,982
Total Assets at fair value		$	70,408			$	70,408

Other Postretirement Benefits Plan
Assets at Fair Value as of December 31, 2015
(In thousands)		Level 1				Total
Domestic Mutual Funds		$	49,887			$	49,887
International Mutual Funds		15,681				15,681
Total Assets at fair value		$	65,568			$	65,568

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