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Pension plan (Tables) | 6 Months Ended
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Dec. 29, 2012
Compensation and Retirement Disclosure [Abstract] |
Components of net periodic pension costs | Components of net periodic pension costs during the quarters ended December 29, 2012 and December 31, 2011 were as follows:
| Second Quarters Ended |  | Six Months Ended
| December 29, 2012 |  | December 31, 2011 |  | December 29, 2012 |  | December 31, 2011
| (Thousands)
Service cost | $ | 9,230 |  |  | $ | 7,095 |  |  | $ | 18,460 |  |  | $ | 14,190 |
Interest cost | 3,663 |  |  | 3,731 |  |  | 7,326 |  |  | 7,462 |
Expected return on plan assets | (6,976 | ) |  | (6,734 | ) |  | (13,952 | ) |  | (13,468 | )
Recognized net actuarial loss | 3,724 |  |  | 2,420 |  |  | 7,448 |  |  | 4,840 |
Amortization of prior service credit | (393 | ) |  | (469 | ) |  | (786 | ) |  | (938 | )
Net periodic pension cost | $ | 9,248 |  |  | $ | 6,043 |  |  | $ | 18,496 |  |  | $ | 12,086 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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