Discontinued Operations (Components Of Income Related To Pacific Scientific Aerospace Business) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010
Discontinued Operations
Net sales	$ 13,000,000	$ 93,500,000	$ 110,600,000	$ 177,900,000
Operating expenses	(16,800,000)	(77,400,000)	(99,500,000)	(150,000,000)
Allocated interest expense		(600,000)	(600,000)	(1,200,000)
Income (loss) before taxes	(3,800,000)	15,500,000	10,500,000	26,700,000
Income tax (expense) benefit	1,200,000	(5,100,000)	(4,000,000)	(8,900,000)
Income (loss) from discontinued operations	(2,600,000)	10,400,000	6,500,000	17,800,000
Gain on sale, net of $126 related income taxes	201,700,000		201,700,000
Earnings from discontinued operations, net of income taxes	199,118,000	10,353,000	208,230,000	17,840,000
Income taxes related to the gain on the sale	$ 126,000,000		$ 126,000,000