Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2021

Financial Instruments [Abstract]

Summary Of Financial Instruments Measured At Fair Value

March 31, 2021	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	10,006	$	--	$	--	$	10,006
Restricted securities:
Money market funds		550		--		--		550
Endospan loan		--		--		409		409
Total assets	$	10,556	$	--	$	409	$	10,965
Current liabilities:
Contingent consideration		--		--		(16,800)		(16,800)
Long-term liabilities:
Contingent consideration		--		--		(44,100)		(44,100)
Total liabilities	$	--	$	--	$	(60,900)	$	(60,900)

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)

Reconciliation Of Changes In Fair Value Of Level 3 Liabilities

		Endospan Loan			Contingent Consideration
Balance as of December 31, 2020	$	409	Balance as of December 31, 2020	$	(59,930)
Change in valuation		--	Change in valuation		(970)
Balance as of March 31, 2021	$	409	Balance as of March 31, 2021	$	(60,900)