Cost Reduction Plan	9 Months Ended
Cost Reduction Plan	Aug. 31, 2014
Restructuring and Related Activities [Abstract]
Cost Reduction Plan	Cost Reduction Plan On January 30, 2014, the Company announced a cost reduction plan (the “Restructuring Plan”) which resulted in the reduction of the Company’s overall headcount by approximately 260 employees. In connection with the Restructuring Plan, the Company recorded a liability of $10.0 million in the first quarter of fiscal 2014, consisting of costs for severance, employee-related benefits and other associated expenses. The remaining liability as of August 31, 2014 is $0.6 million, which includes $0.4 million in payments to be made related to ongoing business volume and $0.2 million in payments to be made related to the acquisition of the Rocketdyne Business. The costs of the Restructuring Plan related to ongoing business volume of $6.1 million were recovered as a component of overhead in the first nine months of fiscal 2014. These restructuring costs were a component of the Company’s fiscal 2014 U.S. government forward pricing rates, and therefore, were recovered through the pricing of the Company’s products and services to the U.S. government. The costs of the Restructuring Plan related to the acquisition of the Rocketdyne Business, $3.0 million as of August 31, 2014, have been capitalized and recorded in other noncurrent assets in the unaudited condensed consolidated balance sheet. Such costs are reimbursable costs and will be allocated to the Company’s U.S. government contracts based on the Company’s planned integration savings exceeding its restructuring costs by a factor of at least two to one. The Company believes that the anticipated restructuring savings will exceed restructuring costs by a factor of at least two to one; therefore, the costs were deferred as the Company believes that subsequent recovery of said costs through the pricing of the Company’s products and services to the U.S. government is probable. The Company reviews on a quarterly basis the probability of recovery of these costs.

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

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