Loss Contingencies (Narratives) (Details) - USD ($)		6 Months Ended
	Aug. 02, 2012	Sep. 30, 2016
Loss Contingencies [Line Items]
Loss Contingency Accrual		$ 12,483,000
Estimation of asbestos-related aggregate liability that is probable and estimable		6,143,000
Asbestos liability payments		$ 2,000,000
Loss settlement gross period		12 months
Estimation of product-related aggregate liability		$ 5,091,000
Loss Contingency Alleged Taxes Owed	$ 7,500,000	2,100,000
Loss Contingency Alleged Taxes Owed Including Penalties And Interest	$ 3,100,000	2,900,000
Environmental Expense and Liabilities		754,000
Accrual for Environmental Loss Contingencies		$ 326,000
Minimum [Member]
Loss Contingencies [Line Items]
Loss contingency period		37 years
Estimation of asbestos-related aggregate liability that is probable and estimable		$ 5,400,000
Maximum [Member]
Loss Contingencies [Line Items]
Estimation of asbestos-related aggregate liability that is probable and estimable		8,300,000
Magnetek [Member]
Loss Contingencies [Line Items]
Estimation of asbestos-related aggregate liability that is probable and estimable		$ 1,249,000