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Employee Benefit Plans | 9 Months Ended
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Sep. 28, 2013
Employee Benefit Plans [Abstract] |
Employee Benefit Plans | Employee Benefit Plans The Company has retirement and pension plans covering substantially all of its employees. Most retirement benefits are provided by the Company under separate final-pay noncontributory and contributory defined benefit and defined contribution plans for all salaried and hourly employees (excluding those covered by union-sponsored plans) who meet service and age requirements. Defined benefits are based principally on length of service and earnings patterns during the five years preceding retirement. During the third quarter of fiscal 2011, as part of the initiative to combine the Darling and Griffin retirement benefit programs, the Company's Board of Directors authorized the Company to proceed with the restructuring of its retirement benefit program effective January 1, 2012, to include the closing of Darling's salaried and hourly defined benefit plans to new participants as well as the freezing of service and wage accruals thereunder effective December 31, 2011 (a curtailment of these plans for financial reporting purposes) and the enhancing of benefits under the Company's defined contribution plans. However, the Company-sponsored hourly union plan has not been curtailed. Net pension cost for the three and nine months ended September 28, 2013 and September 29, 2012 includes the following components (in thousands):
| Three Months Ended | Nine Months Ended
| September 28, 2013 | September 29, 2012 | September 28, 2013 | September 29, 2012
Service cost | $ | 77 |  | $ | 82 |  | $ | 230 |  | $ | 245 |
Interest cost | 1,318 |  | 1,362 |  | 3,954 |  | 4,088 |
Expected return on plan assets | (1,819 | ) | (1,677 | ) | (5,457 | ) | (5,032 | )
Amortization of prior service cost | 15 |  | 23 |  | 45 |  | 67 |
Amortization of net loss | 1,300 |  | 1,189 |  | 3,900 |  | 3,567 |
Net pension cost | $ | 891 |  | $ | 979 |  | $ | 2,672 |  | $ | 2,935 |
The Company's funding policy for employee benefit pension plans is to contribute annually not less than the minimum amount required nor more than the maximum amount that can be deducted for federal income tax purposes. Contributions are intended to provide not only for benefits attributed to service to date, but also for those expected to be earned in the future. Based on actuarial estimates at September 28, 2013, the Company expects to contribute approximately $0.3 million to its pension plans to meet funding requirements during the next twelve months. Additionally, the Company has made tax deductible discretionary and required contributions to its pension plans for the nine months ended September 28, 2013 and September 29, 2012 of approximately $4.0 million and $1.8 million, respectively. The Company participates in various multiemployer pension plans which provide defined benefits to certain employees covered by labor contracts. These plans are not administered by the Company and contributions are determined in accordance with provisions of negotiated labor contracts to meet their pension benefit obligations to their participants. The Company's contributions to each individual multiemployer plan represent less than 5% of the total contributions to each such plan. Based on the most currently available information, the Company has determined that, if a withdrawal were to occur, withdrawal liabilities on two of the plans in which the Company currently participates could be material to the Company, with one of these material plans certified as critical or red zone. With respect to the other multiemployer pension plans in which the Company participates and which are not individually significant, four plans have certified as critical or red zone and two plans have certified as endangered or yellow zone as defined by the Pension Protection Act of 2006. In June 2009, the Company received a notice of a mass withdrawal termination and a notice of initial withdrawal liability from a multiemployer plan in which it participated. The Company had anticipated this event and as a result had accrued approximately $3.2 million as of January 3, 2009 based on the most recent information that was probable and estimable for this plan. The plan had given a notice of redetermination liability in December 2009. In fiscal 2010, the Company received further third party information confirming the future payout related to this multiemployer plan. As a result, the Company reduced its liability to approximately $1.2 million. In fiscal 2010, another under-funded multiemployer plan in which the Company participates gave notification of partial withdrawal liability. As of September 28, 2013, the Company has an accrued liability of approximately $0.9 million representing the present value of scheduled withdrawal liability payments under this multiemployer plan. While the Company has no ability to calculate a possible current liability for under-funded multiemployer plans that could terminate or could require additional funding under the Pension Protection Act of 2006, the amounts could be material.

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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 Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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