Loss Contingencies (Narratives) (Details) - USD ($)		9 Months Ended
	Aug. 02, 2012	Dec. 31, 2015
Loss Contingencies [Line Items]
Asbestos-related aggregate liability - Minimum		$ 5,400,000
Asbestos-related aggregate liability - Maximum		8,300,000
Estimation of asbestos-related aggregate liability that is probable and estimable		6,886,000
Asbestos liability payments		$ 2,000,000
Loss settlement gross period		12 months
Estimation of product-related aggregate liability		$ 4,958,000
Loss Contingency Alleged Taxes Owed	$ 7,300,000	2,100,000
Loss Contingency Alleged Taxes Owed Including Penalties And Interest	$ 3,000,000	2,800,000
Environmental Expense and Liabilities		1,297,000
Accrual for Environmental Loss Contingencies		$ 455,000
Minimum [Member]
Loss Contingencies [Line Items]
Loss contingency period		37 years
Magnetek [Member]
Loss Contingencies [Line Items]
Estimation of asbestos-related aggregate liability that is probable and estimable		$ 1,491,000