Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Financial Instruments [Abstract]

Summary Of Fair Value Of Financial Assets

			Quoted prices in
			active markets for		Significant other		Significant
			identical assets		observable inputs		unobservable inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents	$	9,932	$	9,932	$	-	$	-
Investments available-for-sale		1,953		-		-		1,953
Total	$	11,885	$	9,932	$	-	$	1,953

Schedule Of Auction Rate Securities

	Par Value	Temporary Impairment	Carrying Value
Investments available-for-sale	$2,500	$547	$1,953