Summary of Significant Accounting Policies - Schedule of Contract Balances (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Receivables, which are included in 'Accounts Receivable'	$ 505,000	$ 131,000
Contract liabilities (deferred revenue)	$ 54,000	$ 67,000

Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 910
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123353855&loc=SL119991595-234733

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