Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2020

Financial Instruments [Abstract]

Summary Of Financial Instruments Measured At Fair Value

December 31, 2020	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	11,484		--		--	$	11,484
Restricted securities:
Money market funds		546		--		--		546
Endospan Loan		--		--		409		409
Total assets	$	12,030	$	--	$	409	$	12,439
Current liabilities:
Contingent consideration		--		--		(16,430)		(16,430)
Long-term liabilities:
Contingent consideration		--		--		(43,500)		(43,500)
Total liabilities	$	--	$	--	$	(59,930)	$	(59,930)

December 31, 2019	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	1,472		--		--	$	1,472
Restricted securities:
Money market funds		528		--		--		528
Endospan Loan		--		--		358		358
Total assets	$	2,000	$	--	$	358	$	2,358

Reconciliation Of Changes In Fair Value Of Level 3 Liabilities

		Endospan Loan			Contingent Consideration
Balance as of December 31, 2019	$	358	Balance as of December 31, 2019	$	--
Additional investment in Endospan		5,000	Fair value at acquisition		(55,407)
Change in valuation		(4,949)	Change in valuation		(4,523)
Balance as of December 31, 2020	$	409	Balance as of December 31, 2020	$	(59,930)