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Pension, Postretirement, and Postemployement Obligations | 3 Months Ended
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Dec. 30, 2012
Pension Postretirement And Postemployment Defined Benefit Plans [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | PENSION, POSTRETIREMENT AND POSTEMPLOYMENT DEFINED BENEFIT PLANS We have several noncontributory defined benefit pension plans that together cover selected employees. Benefits under the plans were generally based on salary and years of service. Effective in 2012, all benefits are frozen and no additional benefits are being accrued. Our liability and related expense for benefits under the plans are recorded over the service period of active employees based upon annual actuarial calculations. Plan funding strategies are influenced by government regulations. Plan assets consist primarily of domestic and foreign corporate equity securities, government and corporate bonds, and cash. In addition, we provide retiree medical and life insurance benefits under postretirement plans at several of our operating locations. The level and adjustment of participant contributions vary depending on the specific plan. In addition, PD LLC provides postemployment disability benefits to certain employee groups prior to retirement. Our liability and related expense for benefits under the postretirement plans are recorded over the service period of active employees based upon annual actuarial calculations. We accrue postemployment disability benefits when it becomes probable that such benefits will be paid and when sufficient information exists to make reasonable estimates of the amounts to be paid. Plan assets may also be used to fund medical costs of certain active employees. We use a fiscal year end measurement date for all of our pension and postretirement medical plan obligations. The net periodic cost (benefit) components of our pension and postretirement medical plans are as follows:
| PENSION PLANS | 13 Weeks Ended |
| (Thousands of Dollars) | December 30 2012 |  | December 25 2011 |
| Service cost for benefits earned during the period | 54 |  | 7 |
| Interest cost on projected benefit obligation | 1,882 |  | 1,994 |
| Expected return on plan assets | (2,459 | ) | (2,223 | )
| Amortization of net loss | 572 |  | 593 |
| Amortization of prior service benefit | (34 | ) | (34 | )
|  | 15 |  | 337 |
| POSTRETIREMENT MEDICAL PLANS | 13 Weeks Ended |
| (Thousands of Dollars) | December 30 2012 |  | December 25 2011 |
| Service cost for benefits earned during the period | 182 |  | 182 |
| Interest cost on projected benefit obligation | 281 |  | 277 |
| Expected return on plan assets | (368 | ) | (532 | )
| Amortization of net gain | (331 | ) | (613 | )
| Amortization of prior service benefit | (365 | ) | (365 | )
|  | (601 | ) | (1,051 | )
Based on our forecast at December 30, 2012, we expect to contribute $2,733,000 to our pension plans for the remainder of 2013. Based on our forecast at December 30, 2012, we do not expect to make significant contributions to our postretirement plans for the remainder of 2013.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7, 21, 22 -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 FASB Staff Position (FSP) -Number FAS106-2 -Paragraph 20, 21, 22 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Implementation Guide (Q and A) -Number FAS88 -Paragraph 63 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5, 6, 7, 8 -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. 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