Investment in TowerJazz Semiconductor Ltd.	6 Months Ended
Jun. 30, 2013
Investments, Debt and Equity Securities [Abstract]
Investment in TowerJazz Semiconductor Ltd.	Investment in TowerJazz Semiconductor Ltd. During the second quarter of fiscal 2013, the Company sold its remaining 42,970 TowerJazz ordinary shares. This sale resulted in a gain of $181,000.

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

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