Cash Equivalents And Restricted Cash And Securities (Tables)

12 Months Ended

Dec. 31, 2014

Cash Equivalents And Restricted Cash And Securities [Abstract]

Summary Of Cash Equivalents And Marketable Securities

			Unrealized		Estimated
			Holding		Market
December 31, 2014	Cost Basis		Gains (Losses)		Value
Cash equivalents:
Money market funds	$	18,213	$	--	$	18,213
Restricted cash and securities:
Cash		5,000		--		5,000
Money market funds		884		--		884
December 31, 2013
Cash equivalents:
Money market funds	$	5,349	$	--	$	5,349
Certificates of deposit		749		--		749
Restricted cash and securities:
Cash		5,000		--		5,000
Money market funds		350		--		350