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Cash Equivalents And Restricted Cash And Securities (Tables)

6 Months Ended

Jun. 30, 2020

Cash Equivalents And Restricted Cash And Securities [Abstract]

Summary Of Cash Equivalents And Restricted Securities


				Unrealized			Estimated
				Holding			Market
June 30, 2020	Cost Basis			Gains			Value
Cash equivalents:
Money market funds	$	11,481		$	--		$	11,481
Restricted securities:
Money market funds		491			--			491
Total	$	11,972		$	--		$	11,972

				Unrealized			Estimated
				Holding			Market
December 31, 2019	Cost Basis			Gains			Value
Cash equivalents:
Money market funds	$	1,472		$	--		$	1,472
Restricted securities:
Money market funds		528			--			528
Total	$	2,000		$	--		$	2,000