Commitments and Contingencies Textuals (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 02, 2015	Apr. 23, 2015
Loss Contingencies [Line Items]
Unasserted Claim	$ 9,400
New Hartford [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	2,300
Accrual for Environmental Loss Contingencies, Payments	1,200
Bloomfield [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	4,700
Accrual for Environmental Loss Contingencies, Payments	10,000
Site Contingency, Accrual, Discount Amount	10,300
Site Contingency, Accrual, Undiscounted Amount	$ 20,800
Site Contingency, Accrual, Discount Rate	8.00%
Superfund Site [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	$ 0
Other accruals and payables [Member] | New Hartford [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	400
Other accruals and payables [Member] | Bloomfield [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	1,200
Other Long-Term Liabilities [Member] | Bloomfield [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	3,500
AH-1Z program [Member]
Loss Contingencies [Line Items]
Unasserted warranty claim		$ 24,000
Loss Contingency Accrual	0
Total program inventory, long-term contract	45,000
Backlog	$ 6,000