Related Party Transactions - Schedule of Incurred Expenses of Minority Shareholders (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Related Party Transactions [Abstract]
CWRU License Agreement - reimbursement of patent legal fees	$ 250	$ 200
CWRU License Agreement Amendment fee	100	75
EsoCheck devices provided to CWRU	15
Fees - Physician Inventors' consulting agreements	83	110
Stock-based compensation expense - Physician Inventors' stock option grants	23	57
Total	$ 471	$ 442

Amount of transactions with related party during the financial reporting period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration