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Multi-Employer Pension Plans (Detail) (USD $) | 12 Months Ended
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Dec. 25, 2011 | Dec. 26, 2010 | Dec. 27, 2009
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Contributions | $ 3,604 |  | $ 3,569 |  | $ 3,844 |
American Federation Of Television And Radio Artists |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
EIN Number | 136414972 | [1] |  |  |  |
Plan Number | 001 | [1] |  |  |  |
Zone Status | Green as of Nov. 30, 2010 | [1] | Green as of Nov. 30, 2009 | [1] |  |
Contributions | 896 | [1] | 858 | [1] | 842 | [1]
CWA/ITU Negotiated Pension Plan |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
EIN Number | 136212879 |  |  |  |  |
Plan Number | 001 |  |  |  |  |
Zone Status | Red |  | Red |  |  |
FIP/RP Status Pending/ Implemented | Implemented |  |  |  |  |
Contributions | 146 |  | 169 |  | 186 |
Surcharge Imposed | No |  |  |  |  |
GCIU - Employer Retirement Benefit Plan |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
EIN Number | 916024903 | [1] |  |  |  |
Plan Number | 001 | [1] |  |  |  |
Zone Status | Red | [1] | Red | [1] |  |
FIP/RP Status Pending/ Implemented | Implemented | [1] |  |  |  |
Contributions | 280 | [1] | 331 | [1] | 480 | [1]
Surcharge Imposed | No | [1] |  |  |  |
Newspaper Guild Of Detroit |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
EIN Number | 521082662 | [1] |  |  |  |
Plan Number | 001 | [1] |  |  |  |
Zone Status | Red | [1] | Red | [1] |  |
FIP/RP Status Pending/ Implemented | Implemented | [1] |  |  |  |
Contributions | 385 | [1] | 392 | [1] | 498 | [1]
Surcharge Imposed | No | [1] |  |  |  |
Expiration Date of CBA | Nov. 13, 2012 | [1] |  |  |  |
International Association Of Machinists |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
EIN Number | 516031295 | [1] |  |  |  |
Plan Number | 002 | [1] |  |  |  |
Zone Status | Green | [1] | Green | [1] |  |
Contributions | 308 | [1] | 315 | [1] | 361 | [1]
Expiration Date of CBA | Apr. 30, 2013 | [1] |  |  |  |
Teamster Pension Fund of Philadelphia and Vicinity |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
EIN Number | 231511735 | [1] |  |  |  |
Plan Number | 001 | [1] |  |  |  |
Zone Status | Yellow | [1] | Orange | [1] |  |
FIP/RP Status Pending/ Implemented | Implemented | [1] |  |  |  |
Contributions | 1,054 | [1] | 995 | [1] | 1,011 | [1]
Central Pension Fund of the International Union of Operating Engineers and Participating Employers |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
EIN Number | 366052390 | [1] |  |  |  |
Plan Number | 001 | [1] |  |  |  |
Zone Status | Green as of Jan. 31, 2012 | [1] | Green as of Jan. 31, 2011 | [1] |  |
Contributions | 163 | [1] | 166 | [1] | 158 | [1]
Expiration Date of CBA | Apr. 30, 2013 | [1] |  |  |  |
Central States Southeast and Southwest Areas Pension Fund |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
EIN Number | 366044243 |  |  |  |  |
Plan Number | 001 |  |  |  |  |
Zone Status | Red |  | Red |  |  |
FIP/RP Status Pending/ Implemented | Implemented |  |  |  |  |
Contributions | $ 372 |  | $ 343 |  | $ 308 |
Surcharge Imposed | No |  |  |  |  |
Expiration Date of CBA | Oct. 01, 2012 |  |  |  |  |
Period 1 | American Federation Of Television And Radio Artists |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | May 03, 2011 | [1] |  |  |  |
Period 1 | CWA/ITU Negotiated Pension Plan |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | Nov. 08, 2010 |  |  |  |  |
Period 1 | GCIU - Employer Retirement Benefit Plan |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | Jun. 21, 2010 | [1] |  |  |  |
Period 1 | Teamster Pension Fund of Philadelphia and Vicinity |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | Nov. 13, 2012 | [1] |  |  |  |
Period 2 | American Federation Of Television And Radio Artists |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | Jul. 13, 2012 | [1] |  |  |  |
Period 2 | CWA/ITU Negotiated Pension Plan |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | Feb. 01, 2013 |  |  |  |  |
Period 2 | GCIU - Employer Retirement Benefit Plan |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | Aug. 31, 2013 | [1] |  |  |  |
Period 2 | Teamster Pension Fund of Philadelphia and Vicinity |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | Mar. 13, 2013 | [1] |  |  |  |
Period 3 | American Federation Of Television And Radio Artists |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |
Expiration Date of CBA | Jun. 30, 2013 | [1] |  |  |  |
[1] | This plan has elected to utilize special amortization provisions provided under the Preservation of Access to Care for Medicare Beneficiaries and Pension Relief Act of 2010.

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- Definition The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 + Details
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- Definition Amount of contributions made to multiemployer plans for each period for which a statement of income is presented. An employer may disclose total contributions to multiemployer plans without disaggregating the amounts attributable to pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 80 -Topic 715 -URI http://asc.fasb.org/extlink&oid=6958064&loc=d3e29142-114947 + Details
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