v3.3.1.900

Basis of Presentation and Significant Accounting Policies (Narrative) (Details) | 12 Months Ended
--- | ---
Nov. 28, 2015 USD ($) segment | Nov. 29, 2014 USD ($) | Nov. 30, 2013 USD ($)
Principles of Consolidation |  |  |
Number of segments | segment | 3 |  |
Accounting Period |  |  |
Fiscal Period Duration | 364 days | 364 days | 364 days
Foreign Currency Translation and Transactions |  |  |
Foreign currency transaction gain (loss) | $ (215,000) | $ 1,251,000 | $ (520,000)
Cash and Cash Equivalents and Restricted Cash |  |  |
Restricted cash, current | 0 | 0 |
Restricted cash, noncurrent | 1,294,000 | 1,294,000 |
Property, Plant and Equipment |  |  |
Asset held for sale | $ 533,000 | 0 |
Stock-based Compensation |  |  |
Recognition period of compensation expenses from date of grant (in years) | 4 years |  |
Revenue Recognition |  |  |
Revenue recognized under percentage of completion method | $ 42,338,000 | 35,537,000 | 42,002,000
Research and Development Expense |  |  |
Research and development expense | 21,650,000 | 18,102,000 | $ 11,334,000
Guarantees |  |  |
Letters of credit outstanding, amount | 24,581,000 | 33,359,000 |
New Accounting Pronouncements and Changes in Accounting Principles [Abstract] |  |  |
Unamortized debt issuance cost | $ 2,756,000 | $ 1,114,000 |
Patents [Member] | Weighted Average [Member] |  |  |
Goodwill and Acquired Intangible Assets |  |  |
Useful life of intangible assets (in years) | 14 years |  |
Other Acquired Intangibles [Member] | Minimum [Member] |  |  |
Goodwill and Acquired Intangible Assets |  |  |
Useful life of intangible assets (in years) | 1 year |  |
Other Acquired Intangibles [Member] | Maximum [Member] |  |  |
Goodwill and Acquired Intangible Assets |  |  |
Useful life of intangible assets (in years) | 30 years |  |
Building and Building Improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment |  |  |
Useful life of property, plant and equipment (in years) | 15 years |  |
Building and Building Improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment |  |  |
Useful life of property, plant and equipment (in years) | 40 years |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment |  |  |
Useful life of property, plant and equipment (in years) | 3 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment |  |  |
Useful life of property, plant and equipment (in years) | 15 years |  |

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