A savings certificate entitling the Entity (that is, bearer) to receive interest at an established maturity date, based upon a fixed interest rate. A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Commitments and Contingencies, Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Jun. 07, 2018
Operating Leases [Abstract]
Total right-of-use asset	$ 4,369		$ 1,972
Total lease liabilities	3,506		1,088
Rent expense	400	$ 300
Restricted cash	1,340		1,340
Operating and Finance Leases [Member]
Operating Leases [Abstract]
Restricted cash	800		800
Renovacor, Inc. [Member]
Operating Leases [Abstract]
Total right-of-use asset	3,800
Total lease liabilities	$ 3,600
Hopewell, New Jersey and Cambridge [Member]
Operating Leases [Abstract]
Remaining lease term	10 years 3 months
ESB Lease Agreement [Member]
Operating Leases [Abstract]
Term of lease agreement	3 years
Letter of credit				$ 900
Lease expiration date	Aug. 29, 2024
Certificate of deposit	$ 800		$ 800
ESB Lease Agreement Amendment [Member]
Operating Leases [Abstract]
Letter of credit	$ 800
Lease expiration date	Jun. 30, 2024
Inotek Lexington Massachusetts Lease Agreement [Member]
Operating Leases [Abstract]
Lease expiration date	Feb. 28, 2023
Rental income received under sublease agreements	$ 100	$ 100
Remaining lease term	1 year 3 months 18 days
Other Current Assets [Member]
Operating Leases [Abstract]
Security deposit	$ 200