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Shareholders' Equity Components of accumulated other comprehensive loss (Details) (USD $)
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12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
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Dec. 25, 2013
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Dec. 26, 2012
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Dec. 28, 2011
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Dec. 25, 2013
Pensions [Member]
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Dec. 26, 2012
Pensions [Member]
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Dec. 28, 2011
Pensions [Member]
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Dec. 25, 2013
Derivatives [Member]
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Dec. 28, 2011
Derivatives [Member]
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Dec. 29, 2010
Derivatives [Member]
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| Components of the Change in Accumulated Other Comprehensive Income (Loss) [Roll Forward] | |||||||||
| Accumulated other comprehensive loss, net of tax, beginning balance | $ (24,999,000) | $ (24,813,000) | $ (19,199,000) | $ (24,999,000) | $ (24,813,000) | $ (19,199,000) | $ 0 | $ 0 | $ 0 |
| Benefit obligation actuarial gain (loss), before tax | 7,873,000 | (4,802,000) | (7,424,000) | 7,873,000 | (4,802,000) | (7,424,000) | |||
| Net gain (loss), before tax | 876,000 | 2,610,000 | (2,841,000) | 876,000 | 2,610,000 | (2,841,000) | |||
| Amortization of net loss, before tax | 1,724,000 | 1,815,000 | 1,036,000 | 1,724,000 | 1,815,000 | 1,036,000 | |||
| Net change in fair value of derivatives, before tax | 3,032,000 | 3,032,000 | |||||||
| Minimum pension liability adjustment, tax (expense) benefit | (4,164,000) | 191,000 | 3,615,000 | (4,164,000) | 191,000 | 3,615,000 | |||
| Unrealized gain on hedged transactions, tax (expense) benefit | (1,184,000) | 0 | 0 | (1,184,000) | |||||
| Other comprehensive loss, tax (expense) benefit | (5,348,000) | 191,000 | 3,615,000 | ||||||
| Accumulated other comprehensive loss, net of tax, ending balance | (16,842,000) | (24,999,000) | (24,813,000) | (18,690,000) | (24,999,000) | (24,813,000) | 1,848,000 | 0 | 0 |
| Reclassification from accumulated other comprehensive loss | 1,724,000 | 1,815,000 | 1,036,000 | 1,724,000 | 1,815,000 | 1,036,000 | |||
| Reclassification from accumulated other comprehensive loss, tax expense | $ 700,000 | $ 700,000 | $ 400,000 | ||||||