FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2011

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2011 and December 31, 2010, and indicates the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value. In general, fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities and fair values determined by Level 2 inputs utilize quoted prices (unadjusted) in inactive markets for identical assets or liabilities obtained from readily available pricing sources for similar instruments. The fair values determined by Level 3 inputs are unobservable values which are supported by little or no market activity. Investments include $20,266 of long-term U.S. government backed securities that have been classified in investments and other assets on the condensed consolidated balance sheet at June 30, 2011. Investments include $3,500 of long-term U.S. government backed securities and $2,081 of long-term corporate bonds that have been classified in investments and other assets on the condensed consolidated balance sheet at December 31, 2010.

	Fair Value Measurements At June 30, 2011, Using
	Level 1		Level 2			Level 3			Total
Cash and cash equivalents:
Money market	$	28,932	$	—		$	—		$	28,932
Available-for-sale investments:
Commerical paper		—		11,099			—			11,099
Corporate bonds		—		43,939			—			43,939
U.S. government backed securities		—		22,266			—			22,266
Total assets	$	28,932	$	77,304		$	—		$	106,236
Accrued contingent consideration	$	—	$	—		$	(2,321	)	$	(2,321	)
Total liabilities	$	—	$	—		$	(2,321	)	$	(2,321	)
	Fair Value Measurements as of December 31, 2010, Using
	Level 1		Level 2			Level 3			Total
Cash and cash equivalents:
Money market	$	10,799	$	—		$	—		$	10,799
Corporate bonds				577						577
Available-for-sale investments:										—
Commercial paper		—		29,642			—			29,642
Corporate bonds		—		40,676			—			40,676
U.S. government backed securities		—		15,494			—			15,494
Total assets	$	10,799	$	86,389		$	—		$	97,188
Accrued contingent consideration	$	—	$	—		$	(4,655	)	$	(4,655	)
Interest rate swap derivative contract		—		(490	)		—			(490	)
Total liabilities	$	—	$	(490	)	$	(4,655	)	$	(5,145	)

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

	Three Months		Three Months		Six Months			Six Months
	Ended June 30,		Ended June 30,		Ended June 30,			Ended June 30,
	2011		2010		2011			2010
Balance beginning of period	$	2,211	$	5,100	$	4,655		$	5,100
Payments		—		—		(2,558	)		—
Change in fair value (included in G&A expenses)		110		304		224			304
Balance end of period	$	2,321	$	5,404	$	2,321		$	5,404