Convertible Notes	6 Months Ended
Convertible Notes	Jun. 30, 2013
Convertible Subordinated Debt [Abstract]
Convertible Notes	CONVERTIBLE NOTES 2.875% Convertible Subordinated Notes On May 19, 2006, we issued $115.0 million aggregate principal amount of 2.875% convertible subordinated notes. The cost of this transaction, including underwriting discounts and commissions and offering expenses, totaled $3.1 million. During 2009 and 2010, we redeemed at total of $26.0 million of these notes. On June 1, 2013, the remaining $89.0 million of these notes were due. Prior to maturity, holders of $88.9 million of these notes converted their notes into 3.0 million shares of FEI common stock. At maturity, holders of $0.1 million of these notes did not elect to convert into FEI common stock and those notes were settled with a cash payment.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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