Investment in TowerJazz Semiconductor Ltd	6 Months Ended
Investment in TowerJazz Semiconductor Ltd	Jul. 03, 2011
Investment in TowerJazz Semiconductor Ltd [Abstract]
Marketable Securities	Investment in TowerJazz Semiconductor Ltd. During the first quarter of fiscal year 2010, the Company sold 700,000 TowerJazz ordinary shares which resulted in a gain of $993,000. As of July 3, 2011, the Company held 645,000 available-for-sale TowerJazz ordinary shares with an unrealized gain of $0.5 million recorded in accumulated other comprehensive income on the balance sheet, representing the difference between the carrying value of $0.13 per share and $1.19 per share, their fair value on the last trading day of the reporting period. The fair value of TowerJazz marketable securities as of July 3, 2011 was determined based on “Level 1” inputs as described in Note 7.

- Definition

Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.

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