Collective Bargaining Agreement, Actuarial Calculation, Period For Smoothing Investment Losses

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- Definition

The expense for the present value of future payments related to the withdrawal from multi-employer pension plan(s).

+ References

No definition available.

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- Definition

Multiemployer Plans, Collective-Bargaining Arrangement, Number of Collective Bargaining Arrangements

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount of contributions made to multiemployer plan by employer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947

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- Definition

Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

No definition available.

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Pension Benefits - Schedule of Multiemployer Plans (Details)	1 Months Ended	3 Months Ended				12 Months Ended
	Jul. 29, 2016 USD ($)	Dec. 25, 2016 USD ($)	Sep. 25, 2016 USD ($)	Jun. 26, 2016 USD ($)	Mar. 27, 2016 USD ($)	Dec. 31, 2017 USD ($) Collective_Bargaining_Agreement	Dec. 25, 2016 USD ($)	Dec. 27, 2015 USD ($)
Pension Benefits
Multiemployer pension plan withdrawal expense	$ 5,000,000	$ 0	$ (4,971,000)	$ 11,701,000	$ 0	$ 0	$ 6,730,000	$ 9,055,000
Pension Plan [Member]
Pension Benefits
Multiemployer pension plan withdrawal expense						0	6,700,000	9,100,000
Multiemployer plan, withdrawal obligation		$ 113,000,000				108,000,000	113,000,000
Multiemployer plan, period contributions						2,510,000	2,670,000	2,768,000
Pension Plan [Member] \| Paper-Handlers' - Publishers' Pension Fund [Member]
Pension Benefits
Multiemployer plan, period contributions						$ 88,000	100,000	97,000
Collective bargaining agreement, actuarial calculation, period for smoothing investment losses (in years)						10 years
Pension Plan [Member] \| Pressmen's Publishers' Pension Fund [Member]
Pension Benefits
Multiemployer plan, period contributions						$ 963,000	1,001,000	1,033,000
Collective bargaining agreement, actuarial calculation, period for smoothing investment losses (in years)						10 years
Pension Plan [Member] \| GCIU-Employer Retirement Benefit Plan [Member]
Pension Benefits
Multiemployer plan, period contributions						$ 39,000	43,000	57,000
Number of collective bargaining arrangements \| Collective_Bargaining_Agreement						2
Collective bargaining agreement, actuarial calculation, period for smoothing investment losses (in years)						10 years
Pension Plan [Member] \| Newspaper and Mail Deliverers'-Publishers' Pension Fund [Member]
Pension Benefits
Multiemployer plan, period contributions						$ 995,000	1,040,000	1,038,000
Number of collective bargaining arrangements \| Collective_Bargaining_Agreement						2
Pension Plan [Member] \| CWAITU Negotiated Pension Plan [Member]
Pension Benefits
Multiemployer plan, period contributions						$ 425,000	486,000	543,000
Pension Plan [Member] \| Total of Individually Significant Multiemployer Plans [Member]
Pension Benefits
Multiemployer plan, period contributions						$ 2,510,000	$ 2,670,000	$ 2,768,000