PENSION AND OTHER POSTRETIREMENT BENEFITS (Tables)

6 Months Ended

Jun. 26, 2016

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of Defined Benefit Plan Obligations and Assets

The change in benefit obligation, change in fair value of plan assets, funded status and amounts recognized in the Condensed Consolidated Balance Sheets for these defined benefit plans were as follows:

	Twenty-Six Weeks Ended   June 26, 2016						Twenty-Six Weeks Ended   June 28, 2015
	Pension Benefits			Other Benefits			Pension Benefits			Other Benefits
Change in projected benefit obligation:	(In thousands)
Projected benefit obligation, beginning of period	$	165,952		$	1,672		$	190,401		$	1,657
Interest cost	2,793			26			3,877			34
Actuarial losses	12,736			72			(7,033		)	(27		)
Benefits paid	(4,581		)	(70		)	(2,981		)	(64		)
Curtailments and settlements	—			—			(13,014		)	—
Projected benefit obligation, end of period	$	176,900		$	1,700		$	171,250		$	1,600

	Twenty-Six Weeks Ended   June 26, 2016						Twenty-Six Weeks Ended   June 28, 2015
	Pension Benefits			Other Benefits			Pension Benefits			Other Benefits
Change in plan assets:	(In thousands)
Fair value of plan assets, beginning of period	$	96,947		$	—		$	113,552		$	—
Actual return on plan assets	1,084			—			3,455			—
Contributions by employer	4,412			70			3,177			64
Benefits paid	(4,581		)	(70		)	(2,981		)	(64		)
Curtailments and settlements	—			—			(13,014		)	—
Fair value of plan assets, end of period	$	97,862		$	—		$	104,189		$	—

	June 26, 2016						December 27, 2015
	Pension Benefits			Other Benefits			Pension Benefits			Other Benefits
Funded status:	(In thousands)
Unfunded benefit obligation, end of period	$	(79,038	)	$	(1,700	)	$	(69,005	)	$	(1,672	)

	June 26, 2016						December 27, 2015
	Pension Benefits			Other Benefits			Pension Benefits			Other Benefits
Amounts recognized in the Condensed Consolidated Balance Sheets at end of period:	(In thousands)
Current liability	$	(10,769	)	$	(139	)	$	(10,779	)	$	(138	)
Long-term liability	(68,269		)	(1,561		)	(58,226		)	(1,534		)
Recognized liability	$	(79,038	)	$	(1,700	)	$	(69,005	)	$	(1,672	)

	June 26, 2016					December 27, 2015
	Pension Benefits		Other Benefits			Pension Benefits		Other Benefits
Amounts recognized in accumulated other comprehensive loss at end of period:	(In thousands)
Net actuarial loss (gain)	$	52,065	$	(7	)	$	38,115	$	(79	)

Schedule of Net Defined Benefit Pension and Other Postretirement Costs

Net defined benefit pension and other postretirement costs included the following components:

	Thirteen Weeks Ended June 26, 2016					Thirteen Weeks Ended June 28, 2015					Twenty-Six Weeks Ended June 26, 2016					Twenty-Six Weeks Ended June 28, 2015
	Pension Benefits			Other Benefits		Pension Benefits			Other Benefits		Pension Benefits			Other Benefits		Pension Benefits			Other Benefits
	(In thousands)
Interest cost	$	1,397		$	14	$	1,939		$	17	2,793			26		3,877			34
Estimated return on plan      assets	(1,314		)	—		(1,671		)	—		(2,628		)	—		(3,342		)	—
Settlement loss	—			—		210			—		—			—		3,272			—
Amortization of net loss	164			—		178			—		329			—		357			—
Net costs	$	247		$	14	$	656		$	17	$	494		$	26	$	4,164		$	34

Schedule of Economic Assumptions, and Impact of Change in Discount Rate on Benefit Obligation

The weighted average assumptions used in determining pension and other postretirement plan information were as follows:

	June 26, 2016				December 27, 2015
	Pension Benefits		Other Benefits		Pension Benefits		Other Benefits
Assumptions used to measure benefit obligation at end of period:
Discount rate	3.88	%	3.35	%	4.47	%	4.47	%

	Twenty-Six Weeks Ended   June 26, 2016				Twenty-Six Weeks Ended   June 28, 2015
	Pension Benefits		Other Benefits		Pension Benefits		Other Benefits
Assumptions used to measure net pension and other postretirement cost:
Discount rate	4.47	%	4.47	%	4.22	%	4.22	%
Expected return on plan assets	5.50	%	NA		6.00	%	NA

The sensitivity of the projected benefit obligation for pension benefits to changes in the discount rate is set out below. The impact of a change in the discount rate of 0.25% on the projected benefit obligation for other benefits is less than $1,000. This sensitivity analysis is based on changing one assumption while holding all other assumptions constant. In practice, this is unlikely to occur, and changes in some of the assumptions may be correlated. When calculating the sensitivity of the defined benefit obligation to variations in significant actuarial assumptions, the same method (present value of the defined benefit obligation calculated with the projected unit credit method at the end of the reporting period) has been applied as for calculating the liability recognized in the Condensed Consolidated Balance Sheet.

	Increase in Discount Rate of 0.25%			Decrease in Discount Rate of 0.25%
	(In thousands)
Impact on projected benefit obligation for pension benefits	$	(4,888	)	$	5,197

Schedule of Plan Asset Allocations

The following table reflects the pension plans’ actual asset allocations:

	June 26, 2016		December 27, 2015
Cash and cash equivalents	—	%	—	%
Pooled separate accounts(a):
Equity securities	6	%	7	%
Fixed income securities	7	%	7	%
Common collective trust funds(a):
Equity securities	57	%	57	%
Fixed income securities	30	%	29	%
Total assets	100	%	100	%

(a) Pooled separate accounts (“PSAs”) and common collective trust funds (“CCTs”) are two of the most common types of alternative vehicles in which benefit plans invest. These investments are pooled funds that look like mutual funds, but they are not registered with the SEC. Often times, they will be invested in mutual funds or other marketable securities, but the unit price generally will be different from the value of the underlying securities because the fund may also hold cash for liquidity purposes, and the fees imposed by the fund are deducted from the fund value rather than charged separately to investors. Some PSAs and CCTs have no restrictions as to their investment strategy and can invest in riskier investments, such as derivatives, hedge funds, private equity funds, or similar investments.

Schedule of Fair Value Measurements of Plan Assets

The fair value measurements of plan assets fell into the following levels of the fair value hierarchy as of June 26, 2016 and December 27, 2015:

	June 26, 2016								December 27, 2015
	Level 1(a)		Level 2(b)		Level 3(c)		Total		Level 1(a)		Level 2(b)		Level 3(c)		Total
	(In thousands)
Cash and cash equivalents	$	105	$	—	$	—	$	105	$	147	$	—	$	—	$	147
Pooled separate accounts:
Large U.S. equity funds(d)	—		4,301		—		4,301		—		3,816		—		3,816
Small/Mid U.S. equity funds(e)	—		536		—		536		—		969		—		969
International equity funds(f)	—		1,539		—		1,539		—		1,606		—		1,606
Fixed income funds(g)	—		6,435		—		6,435		—		6,337		—		6,337
Common collective trusts funds:
Large U.S. equity funds(d)	—		22,919		—		22,919		—		22,069		—		22,069
Small U.S. equity funds(e)	—		16,483		—		16,483		—		16,843		—		16,843
International equity funds(f)	—		16,574		—		16,574		—		16,629		—		16,629
Fixed income funds(g)	—		28,970		—		28,970		—		28,531		—		28,531
Total assets	$	105	$	97,757	$	—	$	97,862	$	147	$	96,800	$	—	$	96,947

(a) Unadjusted quoted prices in active markets for identical assets are used to determine fair value.

(b) Quoted prices in active markets for similar assets and inputs that are observable for the asset are used to determine fair value.

(c) Unobservable inputs, such as discounted cash flow models or valuations, are used to determine fair value.

(d) This category is comprised of investment options that invest in stocks, or shares of ownership, in large, well-established U.S. companies. These investment options typically carry more risk than fixed income options but have the potential for higher returns over longer time periods.

(e) This category is generally comprised of investment options that invest in stocks, or shares of ownership, in small to medium-sized U.S. companies. These investment options typically carry more risk than larger U.S. equity investment options but have the potential for higher returns.

(f) This category is comprised of investment options that invest in stocks, or shares of ownership, in companies with their principal place of business or office outside of the U.S.

(g) This category is comprised of investment options that invest in bonds, or debt of a company or government entity (including U.S. and non-U.S. entities). It may also include real estate investment options that directly own property. These investment options typically carry more risk than short-term fixed income investment options (including, for real estate investment options, liquidity risk), but less overall risk than equities.

Schedule of Benefit Payments

The following table reflects the benefits as of June 26, 2016 expected to be paid through 2025 from our pension and other postretirement plans. Because our pension plans are primarily funded plans, the anticipated benefits with respect to these plans will come primarily from the trusts established for these plans. Because our other postretirement plans are unfunded, the anticipated benefits with respect to these plans will come from our own assets.

	Pension Benefits		Other Benefits
	(In thousands)
2016 (remaining)	$	7,102	$	69
2017	11,660		139
2018	11,406		140
2019	11,063		139
2020	11,075		138
2021-2025	49,795		643
Total	$	102,101	$	1,268

Schedule of Unrecognized Benefit Amounts

The amounts in accumulated other comprehensive loss that were not recognized as components of net periodic benefits cost and the changes in those amounts are as follows:

	Twenty-Six Weeks Ended   June 26, 2016						Twenty-Six Weeks Ended   June 28, 2015
	Pension Benefits			Other Benefits			Pension Benefits			Other Benefits
	(In thousands)
Net actuarial loss (gain), beginning of period	$	38,115		$	(79	)	$	43,907		$	(127	)
Amortization	(329		)	—			(357		)	—
Curtailment and settlement adjustments	—			—			(3,272		)	—
Actuarial loss	12,736			72			(7,033		)	(26		)
Asset loss (gain)	1,543			—			(112		)	—
Net actuarial loss (gain), end of period	$	52,065		$	(7	)	$	33,133		$	(153	)