SUPPLEMENTARY BALANCE SHEET INFORMATION (Schedule of Long Term Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
SUPPLEMENTARY BALANCE SHEET INFORMATION [Abstract]
2013	$ 7,963
2014	7,970
2015	6,312
2016	4,655
2017	4,642
2018 and after	17,168
Long-term loans	48,710	45,071
Interest expenses	$ 2,153	$ 2,318	$ 626

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Amount of long-term debt of the registrant maturing in the next fiscal year following the latest fiscal year.

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Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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