Investments in Towerjazz Semiconductor Ltd.	12 Months Ended
Investments in Towerjazz Semiconductor Ltd.	Dec. 28, 2014
Investments, Debt and Equity Securities [Abstract]
INVESTMENT IN TOWERJAZZ SEMICONDUCTOR LTD.	INVESTMENT IN TOWERJAZZ SEMICONDUCTOR LTD. During the second quarter of fiscal year 2013, the Company sold its remaining 42,970 TowerJazz ordinary shares. This sale resulted in a gain of $181,000. The number of TowerJazz ordinary shares sold by the Company reflect the 1-to-15 reverse stock split implemented by TowerJazz effective August 3, 2012.

The entire disclosure for investments in certain debt and equity securities.

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