Rental Equipment, net (Details) - Schedule Of Rental Equipment - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Rental Equipment [Abstract]
Rental equipment	$ 10,425	$ 10,425
Less accumulated depreciation	8,585	8,409
Net rental equipment	$ 1,840	$ 2,016

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 http://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