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Investment in TowerJazz Semiconductor Ltd.
 12 Months Ended
Dec. 30, 2012
Investments, Debt and Equity Securities [Abstract]  
Investment in TowerJazz Semiconductor Ltd.
INVESTMENT IN TOWERJAZZ SEMICONDUCTOR LTD.

As of December 30, 2012, the Company held 42,970 TowerJazz ordinary shares with a net unrealized loss of $11,000 recorded in accumulated other comprehensive income, or AOCI, on the balance sheet. The net unrealized loss includes the tax benefits attributable to unrealized gains on investment in TowerJazz and the difference between the cost of $1.95 per share and carrying value of $8.04 per share, the fair value on the last trading day of the reporting period. The number of TowerJazz ordinary shares held by the Company reflect the 1 to 15 reverse stock split implemented by TowerJazz effective August 3, 2012.

The fair value of TowerJazz marketable securities as of December 30, 2012 was determined based on “Level 1” inputs as described in Note 7. During 2012, the Company recorded $63,000 of tax benefit related to AOCI attributable to unrealized gains on investment in TowerJazz.