Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

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Balance Type:	debit
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- Definition

Class Of Warrant Or Right, Number Of Securities Settled In Period

+ References

No definition available.

+ Details

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Namespace Prefix:	xcur_
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Balance Type:	na
Period Type:	duration

- Definition

Class Of Warrant Or Right, Payment For Liability

+ References

No definition available.

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Balance Type:	credit
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- Definition

Stock Issued During Period, Shares, Exercise Of Warrants

+ References

No definition available.

+ Details

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Stockholders' Equity - Common Stock Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	6 Months Ended
	Jun. 23, 2023	Jan. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2021	Dec. 16, 2021
Class of Warrant or Right [Line Items]
Proceeds from warrant exercises			$ 0	$ 1
Number of shares called by warrants (in shares)			50,110		576,261
Exercise price (in dollars per share)			$ 8.1031		$ 8.1031
Payment for warrant liability	$ 800
Warrants settled (in shares)	526,151
Pre-Funded Warrants
Class of Warrant or Right [Line Items]
Proceeds from warrant exercises		$ 14
Shares issued for exercise of warrants (in shares)		466,666
Exercise price (in dollars per share)						$ 0.030