Balance Sheet Accounts and Supplemental Disclosures, (As Restated for fiscal 2014 and 2013) - Narrative - Assets Held for Sale (Details)		1 Months Ended	3 Months Ended		6 Months Ended	12 Months Ended
	Feb. 28, 2015 a	Jul. 31, 2015 USD ($)	May. 31, 2015 USD ($) a	Nov. 30, 2014 USD ($)	May. 31, 2015 USD ($) a	Nov. 30, 2015 USD ($)	Nov. 30, 2014 USD ($)	Nov. 30, 2013 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Acres of land | a	6,000
Proceeds from sale of intellectual property						$ 1,000,000	$ 7,500,000	$ 0
Aerospace and Defense [Member] | Energy Business [Member]
Long Lived Assets Held-for-sale [Line Items]
Expenses incurred to divest		$ 1,800,000
Net sales						600,000	$ 600,000
Discontinued Operations, Disposed of by Sale [Member]
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of intellectual property				$ 7,500,000
Discontinued Operations, Disposed of by Sale [Member] | Other, net [Member]
Long Lived Assets Held-for-sale [Line Items]
Gain on sale				$ 6,800,000
Hillsborough [Member]
Long Lived Assets Held-for-sale [Line Items]
Income from continuing operations before income taxes from land sale						$ 30,600,000
Hillsborough [Member] | Discontinued Operations, Disposed of by Sale [Member]
Long Lived Assets Held-for-sale [Line Items]
Acres of land | a			550		700
Total purchase price			$ 57,000,000		$ 57,000,000
Cash proceeds from sale of land			46,700,000
Cash received at initial closing			40,000,000
Income from continuing operations before income taxes from land sale			30,600,000
Hillsborough [Member] | Discontinued Operations, Disposed of by Sale [Member] | Notes Receivable [Member]
Long Lived Assets Held-for-sale [Line Items]
Promissory note			10,300,000		10,300,000
Hillsborough [Member] | Discontinued Operations, Disposed of by Sale [Member] | Interest Bearing Notes Receivable [Member]
Long Lived Assets Held-for-sale [Line Items]
Promissory note			9,000,000.0		9,000,000.0
Hillsborough [Member] | Discontinued Operations, Disposed of by Sale [Member] | Interest Bearing Notes Receivable, 7% Promissory Note [Member]
Long Lived Assets Held-for-sale [Line Items]
Promissory note			$ 3,000,000.0		$ 3,000,000.0
Promissory note, interest rate			7.00%		7.00%
Promissory note, maturity			7 years
Contingent decrease in principal of receivable			$ 1,000,000.0
Hillsborough [Member] | Discontinued Operations, Disposed of by Sale [Member] | Interest Bearing Notes Receivable, 7% Contingent Promissory Note [Member]
Long Lived Assets Held-for-sale [Line Items]
Promissory note			$ 6,000,000.0		$ 6,000,000.0
Promissory note, interest rate			7.00%		7.00%
Promissory note, maturity			7 years
Hillsborough [Member] | Discontinued Operations, Disposed of by Sale [Member] | Non-interest Bearing Notes Receivable [Member]
Long Lived Assets Held-for-sale [Line Items]
Promissory note			$ 1,300,000		$ 1,300,000
Land Held Back [Member] | Discontinued Operations, Disposed of by Sale [Member]
Long Lived Assets Held-for-sale [Line Items]
Acres of land | a			150
Area 40 [Member] | Discontinued Operations, Disposed of by Sale [Member]
Long Lived Assets Held-for-sale [Line Items]
Acres of land | a			50
Developable Portions of Holdback Acreage [Member] | Discontinued Operations, Disposed of by Sale [Member]
Long Lived Assets Held-for-sale [Line Items]
Total purchase price			$ 6,700,000		$ 6,700,000
Hillsborough [Member]
Long Lived Assets Held-for-sale [Line Items]
Acres of land | a	550