Reportable Segments (Charges Related to Magnetic Technologies Inventory) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Magnetic Technologies [Member]
Segment Reporting Information [Line Items]
Charges related to inventory purchase accounting	$ 224	$ 93,517	$ 69,844	$ 93,517
VAC [Member]
Segment Reporting Information [Line Items]
Charges related to inventory purchase accounting	224	93,517	47,497	93,517
Amount of Inventory Step-Up Amortization			16,100	31,100
VAC [Member] | Magnetic Technologies [Member]
Segment Reporting Information [Line Items]
Charges related to inventory purchase accounting	0	62,444	31,404	62,444
Amount of Inventory Step-Up Amortization	224	31,073	16,093	31,073
Inventory Amount Lower Of Cost Or Market Charge	$ 0	$ 0	$ 22,347	$ 0