Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2015

Financial Instruments [Abstract]

Summary Of Financial Instruments Measured At Fair Value

June 30, 2015	Level 1		Level 2		Level 3		Total
Restricted securities:
Money market funds	$	869	$	--	$	--	$	869
Total assets	$	869	$	--	$	--	$	869

December 31, 2014	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	18,213	$	--	$	--	$	18,213
Restricted securities:
Money market funds		884		--		--		884
Total assets	$	19,097	$	--	$	--	$	19,097