This item represents the aggregate carrying amount of all cost-method investments as reported on or included in the balance sheet. The original cost of the investments may differ from the aggregate carrying amount disclosed due to various adjustments such as: (i) dividends received in excess of earnings after the date of investment that are considered a return of investment and therefore recorded as reductions to cost of the investment, or (ii) a series of operating losses of an investee or other factors which may indicate that a decrease in value of the investment has occurred which is other than temporary and accordingly such decrease in value has been recognized.

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+ Details

Investment in CyOptics, Inc. Investment in CyOptics (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended		9 Months Ended
	May 11, 2005	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011	Dec. 31, 2010
Cost-method Investments, Realized Gain (Loss), Alternative [Abstract]
Consideration in preferred stock received	$ 4,500
Receipt of unsecured promissory note	5,633
Cost Method Investments						0
Gain/recovery of investment		$ 0	$ (360)	$ (6,957)	$ (867)