Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Nov. 29, 2014	Nov. 30, 2013
Deferred tax assets:
Deferred compensation	$ 9,074	$ 7,945
Loss carryforward and tax credit items	19,620	2,529
Accounts receivable	6,538	5,973
Inventories	5,484us-gaap_DeferredTaxAssetsInventory	5,000us-gaap_DeferredTaxAssetsInventory
Pensions	10,019	4,781
Accrued liabilities and other	6,999	1,219
Valuation allowance	(1,268)	(1,102)
Total deferred tax assets, net	56,466us-gaap_DeferredTaxAssetsNet	26,345us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities:
Percentage of completion	(740)	(539)
Plant assets	(24,818)	(24,182)
Goodwill and acquired intangible assets	(97,179)	(40,380)
Other deferred tax liabilities	(230)us-gaap_DeferredTaxLiabilitiesOther	(345)us-gaap_DeferredTaxLiabilitiesOther
Total deferred tax liabilities	(122,967)us-gaap_DeferredIncomeTaxLiabilities	(65,446)us-gaap_DeferredIncomeTaxLiabilities
Deferred tax liability, net	$ (66,501)us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (39,101)us-gaap_DeferredTaxAssetsLiabilitiesNet

Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or other income not separately disclosed.

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