Summary of Significant Accounting Policies - Customers that Represented More than 10% of Net Sales (Parenthetical) (Detail)	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2013 United Launch Alliance [Member] Net Sales [Member]	Nov. 30, 2013 United Launch Alliance [Member] Accounts Receivable [Member]	Nov. 30, 2013 NASA [Member] Accounts Receivable [Member]	Nov. 30, 2012 Maximum [Member] United Launch Alliance [Member] Net Sales [Member]	Nov. 30, 2011 Maximum [Member] United Launch Alliance [Member] Net Sales [Member]	Nov. 30, 2012 Maximum [Member] United Launch Alliance [Member] Customers [Member] Accounts Receivable [Member]	Nov. 30, 2012 Maximum [Member] NASA [Member] Customers [Member] Accounts Receivable [Member]
Sales Information [Line Items]
Credit risk, percentage	68.00%	18.00%	18.00%	22.00%	10.00%	10.00%	10.00%	10.00%