Comprehensive Income (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Oct. 01, 2010	Sep. 30, 2011	Oct. 01, 2010
Total comprehensive income (loss)
Net income	$ 3,546	$ (361)	$ 4,452	$ 9,403
Change in unrealized gain (loss) on investments, net	(10)	5	(13)	(339)
Change in unrealized gain (loss) on foreign exchange contracts, net of tax		43		(19)
Foreign currency translation	(444)	567	79	(88)
Total comprehensive income (loss)	$ 3,092	$ 254	$ 4,518	$ 8,957

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

- Definition

Gross appreciation or the gross loss in value of the total unsold securities. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

+ References

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