FINANCIAL INSTRUMENTS, Contractual Maturities of Available-For-Sale Securities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Contractual maturities of available-for-sale securities [Abstract]
Less than one year	$ 7,083	$ 7,937
One to two years	664	25,785
More than two years	1,619	28,716
Total Available-For-Sale Securities	$ 9,366	$ 62,438

Amount of debt securities categorized neither as held-to-maturity nor trading.

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