FINANCIAL INSTRUMENTS AND CONCENTRATIONS (Details) (Recurring Basis, USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Carrying Value
Assets and liabilities measured and recorded at fair value on a recurring basis
Money market funds	$ 34	$ 34	$ 54
Contingent consideration		16,226	7,166
Quoted Prices in Active Markets (Level 1)
Assets and liabilities measured and recorded at fair value on a recurring basis
Money market funds	34	34	54
Significant Unobservable Inputs (Level 3)
Assets and liabilities measured and recorded at fair value on a recurring basis
Contingent consideration		$ 16,226	$ 7,166

- Definition

Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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