Reportable Segments (Changes Related to Magnetic Technologies Inventory) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Magnetic Technologies [Member]
Segment Reporting Information [Line Items]
Charges related to inventory purchase accounting	$ 53,891,000	$ 0	$ 69,620,000	$ 0
VAC [Member]
Segment Reporting Information [Line Items]
Charges related to inventory purchase accounting	31,545,000	0	47,273,000	0
Amount of Inventory Step-Up Amortization			15,900
VAC [Member] | Magnetic Technologies [Member]
Segment Reporting Information [Line Items]
Charges related to inventory purchase accounting	26,703,000	0	31,404,000	0
Amount of Inventory Step-Up Amortization	4,842,000	0	15,868,000	0
Inventory Amount Lower Of Cost Or Market Charge	$ 22,347,000	$ 0	$ 22,347,000	$ 0