Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012 Magnetic Technologies [Member]	Sep. 30, 2011 Magnetic Technologies [Member]	Sep. 30, 2012 Magnetic Technologies [Member]	Sep. 30, 2011 Magnetic Technologies [Member]	Oct. 31, 2012 Refundable and Prepaid Income Taxes [Member] Subsequent Events [Member]
Income Tax Contingency [Line Items]
Charges related to inventory purchase accounting	$ 224,000	$ 93,517,000	$ 69,844,000	$ 93,517,000
Income tax receivable, current					$ 37,500,000