Rental Equipment, net (Details) - Schedule Of Rental Equipment - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Rental Equipment, net (Details) - Schedule Of Rental Equipment [Line Items]
Rental equipment	$ 3,664,000	$ 3,664,000
Less accumulated depreciation	3,300,000	3,253,000
Net rental equipment	$ 364,000	$ 411,000

Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Name:	us-gaap_PropertyPlantAndEquipmentOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant