FINANCIAL INSTRUMENTS - Schedule of Available-For-Sale Securities (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Summary of available-for-sale securities [Abstract]
Amortized Cost	$ 9,263
Gross Unrealized Gains	103
Gross Unrealized Losses	0
Fair Value	9,366
U.S. government obligations and agency securities [Member]
Summary of available-for-sale securities [Abstract]
Amortized Cost	6,775
Gross Unrealized Gains	54
Gross Unrealized Losses	0
Fair Value	6,829
U.S. corporate debt [Member]
Summary of available-for-sale securities [Abstract]
Amortized Cost	651
Gross Unrealized Gains	13
Gross Unrealized Losses	0
Fair Value	664
Foreign corporate debt and equity securities [Member]
Summary of available-for-sale securities [Abstract]
Amortized Cost	1,837
Gross Unrealized Gains	36
Gross Unrealized Losses	0
Fair Value	$ 1,873