Cash Equivalents And Restricted Cash And Securities (Tables)

12 Months Ended

Dec. 31, 2012

Cash Equivalents And Restricted Cash And Securities [Abstract]

Summary Of Cash Equivalents And Marketable Securities

			Unrealized		Estimated
			Holding		Market
December 31, 2012	Cost Basis		Gains		Value
Cash equivalents:
Money market funds	$	1,319	$	--	$	1,319
Restricted cash and securities:
Cash		5,000		--		5,000
Money market funds		323		--		323
December 31, 2011
Cash equivalents:
Money market funds	$	7,334	$	--	$	7,334
Restricted securities:
Money market funds		5,312		--		5,312