Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2021

Financial Instruments [Abstract]

Summary Of Financial Instruments Measured At Fair Value

September 30, 2021	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	10,012	$	--	$	--	$	10,012
Restricted securities:
Money market funds		538		--		--		538
Endospan loan		--		--		409		409
Total assets	$	10,550	$	--	$	409	$	10,959
Current liabilities:
Contingent consideration		--		--		(17,600)		(17,600)
Long-term liabilities:
Contingent consideration		--		--		(47,300)		(47,300)
Total liabilities	$	--	$	--	$	(64,900)	$	(64,900)

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	$	(59,930)
Change in valuation		--		(4,970)
Balance as of September 30, 2021	$	409	$	(64,900)