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STOCKHOLDERS' EQUITY - Warrants (Details) - $ / shares		9 Months Ended
	Jun. 28, 2024	Sep. 30, 2024	Dec. 31, 2023
STOCKHOLDERS' EQUITY
Number of shares to be purchased		4,352,130	2,706,561
Warrant exercise price per share			$ 2.00
Stock price trigger for revision of exercise price of warrants	$ 0.79
Loan and security agreement
STOCKHOLDERS' EQUITY
Warrant exercise price per share	$ 0.79	$ 0.79
Class of warrant issued	1,645,569
Stock price trigger for revision of exercise price of warrants		$ 0.79

X

- Definition

Number of warrants or rights issued.

+ References

No definition available.

+ Details

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Namespace Prefix:	ctso_
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Balance Type:	na
Period Type:	instant

X

- Definition

Price of the entity's common stock which would be required to be attained for revision of exercise price of warrants or rights.

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

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

+ Details

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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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X

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: