Commitments - Additional information (Details) - Fifth Avenue New York [Member] - USD ($)	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Operating Leases, Rent Expense	$ 118,000	$ 112,000
Operating Leases, Future Minimum Payments Due	$ 1,400,000

Amount of lessee's undiscounted obligation for lease payment for operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant