Depreciation	9 Months Ended
Sep. 27, 2013
Property, Plant and Equipment [Abstract]
Depreciation	Depreciation The Company received $63.5 million from the Department of Defense (DoD) in previous periods for reimbursement of the DoD's share of the cost of capital equipment acquired by the Company under a Title III contract. The Company recorded the cost of the equipment in property, plant and equipment and the reimbursements as unearned income, a liability on the Consolidated Balance Sheets. The equipment was placed in service during the third quarter 2012 and its full cost is being depreciated in accordance with Company policy. The unearned income liability is being reduced ratably with the depreciation expense recorded over the life of the equipment. In the first nine months of 2013, the depreciation expense on the equipment subject to reimbursement was $3.5 million. Unearned income was reduced by $3.5 million, accordingly, with the offset recorded as a credit to cost of sales. Depreciation, depletion and amortization expense on the Consolidated Statement of Cash Flows is shown net of reduction in unearned income.

Depreciation

9 Months Ended

Sep. 27, 2013

Property, Plant and Equipment [Abstract]

The Company received $63.5 million from the Department of Defense (DoD) in previous periods for reimbursement of the DoD's share of the cost of capital equipment acquired by the Company under a Title III contract. The Company recorded the cost of the equipment in property, plant and equipment and the reimbursements as unearned income, a liability on the Consolidated Balance Sheets. The equipment was placed in service during the third quarter 2012 and its full cost is being depreciated in accordance with Company policy. The unearned income liability is being reduced ratably with the depreciation expense recorded over the life of the equipment.

In the first nine months of 2013, the depreciation expense on the equipment subject to reimbursement was $3.5 million. Unearned income was reduced by $3.5 million, accordingly, with the offset recorded as a credit to cost of sales. Depreciation, depletion and amortization expense on the Consolidated Statement of Cash Flows is shown net of reduction in unearned income.