FINANCIAL INSTRUMENTS AND FAIR VALUE (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Schedule of Derivative Instrument showing notional value of Interest Rate Swaps

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Balance, beginning of the period	$	6,833		$	10,166		$	7,667		$	11,000
New contracts		—			—			—			—
Matured contracts		(6,833	)		(833	)		(7,667	)		(1,667	)
Balance, end of the period	$	—		$	9,333		$	—		$	9,333

Schedule of other derivatives not designated as hedging Instruments included in Financial Statements

Type	Maturity	Balance Sheet Location	June 30, 2012		December 31, 2011
Interest rate swaps	June 2012	Other current liabilities	$	—	$	57

Schedule of derivatives not designated as hedging instruments included in condensed consolidated statement of comprehensive earnings

	Three Months Ended June 30,						Six Months Ended June 30,						Location of Loss (Gain) Recognized in Income
	2012			2011			2012			2011
Periodic settlements	$	29		$	40		$	60		$	73		Interest expense
Change in fair value	$	(29	)	$	(27	)	$	(57	)	$	(60	)	Interest expense

Schedule of fair value measured on recurring basis

	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
June 30, 2012
Money market funds	$	166	$	—		$	—	$	166
Marketable securities		10,576		—			—		10,576
Total assets	$	10,742	$	—		$	—	$	10,742
December 31, 2011
Money market funds	$	8,483	$	—		$	—	$	8,483
Marketable securities		11,625		—			—		11,625
Total assets	$	20,108	$	—		$	—	$	20,108
Interest rate swaps liability	$	—	$	(57	)	$	—	$	(57	)