Number of warrants or rights expired during the period.

No definition available.

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- Definition

Number of monthly premium payments to reimburse to resigned employee as the Company's Chief Executive Officer and President and as a member of the Company's board of directors.

+ References

No definition available.

+ Details

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- Definition

Refers to the period of a lump sum payment for accrued but unused vacation days

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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- Definition

Reimbursement amount for attorney fees to be paid as part of Separation Agreement.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Period Type:	duration

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares for which recognition of cost was accelerated for award under share-based payment arrangement.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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- Details

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- Details

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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands					12 Months Ended
	Mar. 01, 2021	Feb. 28, 2021	Feb. 24, 2021	Jan. 29, 2021	Dec. 31, 2020	Dec. 31, 2019
Stock Options [Member]
Subsequent Events [Abstract]
Granted (in shares)					400,000	875,000
Strike price (in dollars per share)					$ 1.11	$ 1.56
Subsequent Event [Member]
Subsequent Events [Abstract]
Number of warrants expired (in shares)				19,812
Subsequent Event [Member] \| Incoming Chief Executive Officer [Member] \| Stock Options [Member]
Subsequent Events [Abstract]
Granted (in shares)	1,632,590
Strike price (in dollars per share)	$ 1.73
Award vesting period	3 years
Subsequent Event [Member] \| Incoming Chief Executive Officer [Member] \| Stock Options [Member] \| Vesting on First Anniversary of Date of Grant [Member]
Subsequent Events [Abstract]
Granted (in shares)	544,198
Subsequent Event [Member] \| Incoming Chief Executive Officer [Member] \| Stock Options [Member] \| Vesting Every Three Months Thereafter [Member]
Subsequent Events [Abstract]
Granted (in shares)	136,049
Subsequent Event [Member] \| Separation Agreement [Member] \| Dr. Dolev Rafaeli [Member]
Subsequent Events [Abstract]
Period of lump sum payment for accrued but unused vacation days			84 days
Subsequent Event [Member] \| Separation Agreement [Member] \| Dr. Dolev Rafaeli [Member] \| Maximum [Member]
Subsequent Events [Abstract]
Reimbursement period of COBRA premium payments			18 months
Reimbursement amount to be paid for attorneys' fees			$ 10,000
Subsequent Event [Member] \| Separation Agreement [Member] \| Dr. Dolev Rafaeli [Member] \| Stock Options [Member]
Subsequent Events [Abstract]
Number of shares with accelerated vesting (in shares)		800,886