Summary of Significant Accounting Policies - Customers that Represented More than 10% of Net Sales (Detail)	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Sales Information [Line Items]
Credit risk, percentage	68.00%
Net Sales [Member] | United Launch Alliance [Member]
Sales Information [Line Items]
Credit risk, percentage	18.00%
Net Sales [Member] | Raytheon Company [Member]
Sales Information [Line Items]
Credit risk, percentage	32.00%	37.00%	36.00%
Net Sales [Member] | Lockheed Martin Corporation [Member]
Sales Information [Line Items]
Credit risk, percentage	23.00%	32.00%	28.00%
Accounts Receivable [Member] | United Launch Alliance [Member]
Sales Information [Line Items]
Credit risk, percentage	18.00%
Accounts Receivable [Member] | Raytheon Company [Member]
Sales Information [Line Items]
Credit risk, percentage	20.00%	48.00%
Accounts Receivable [Member] | Lockheed Martin Corporation [Member]
Sales Information [Line Items]
Credit risk, percentage	19.00%	31.00%
Accounts Receivable [Member] | NASA [Member]
Sales Information [Line Items]
Credit risk, percentage	22.00%