Number of warrants or rights exercised.

No definition available.

Name:	ctso_ClassOfWarrantOrRightExercised
Namespace Prefix:	ctso_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of trading days before the warrant expiration date on the basis of which volume-weighted average price (VWAP) of common stock is calculated.

+ References

No definition available.

+ Details

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Namespace Prefix:	ctso_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage used to calculate the exercise price of the warrants based on the volume-weighted average price (VWAP) of the company's common stock.

+ References

No definition available.

+ Details

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Namespace Prefix:	ctso_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate number of common stock units reserved for exercise of warrants.

+ References

No definition available.

+ Details

Name:	ctso_CommonStockUnitsReservedForExerciseOfWarrants
Namespace Prefix:	ctso_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The proceeds associated with the amount received from rights offering, net of fees.

+ References

No definition available.

+ Details

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Namespace Prefix:	ctso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The proceeds associated with the amount received from holders exercising their stock warrants, net of fees.

+ References

No definition available.

+ Details

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Namespace Prefix:	ctso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of shares in a unit.

+ References

No definition available.

+ Details

Name:	ctso_NumberOfSharesInAunit
Namespace Prefix:	ctso_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from rights offering.

+ References

No definition available.

+ Details

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Namespace Prefix:	ctso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

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

+ Details

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

- Definition

Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-8

+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=ctso_SeriesaRightWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=ctso_SeriesBRightWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
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SUBSEQUENT EVENT (Details)	Feb. 24, 2025 USD ($) $ / shares shares	Jan. 10, 2025 USD ($) D $ / shares shares	Dec. 31, 2024 USD ($)	Dec. 31, 2023 $ / shares
SUBSEQUENT EVENTS
Restricted cash, current \| $		$ 5	$ 5,000,000
Warrant exercise price per share \| $ / shares				$ 2
Subsequent event
SUBSEQUENT EVENTS
Aggregate gross proceeds \| $		6,250,000
Net of fees offering \| $		$ 5,800,000
Reserved for rights offering \| shares		6,250,000
Number of shares \| shares		1
Restricted cash, current \| $		$ 5,000,000
Warrant exercise price per share \| $ / shares	$ 1.13
Right warrants were exercised by holders \| shares	1,400,000
Additional aggregate gross proceeds \| $	$ 1,600,000
Net of fees warrants \| $	$ 1,500,000
Series A Right Warrants \| Subsequent event
SUBSEQUENT EVENTS
Number of common stock purchased by each warrant \| shares		1
Percentage of right warrants		90.00%
Number of trading days \| D		5
Series A Right Warrants \| Subsequent event \| Minimum
SUBSEQUENT EVENTS
Warrant exercise price per share \| $ / shares		$ 1
Series A Right Warrants \| Subsequent event \| Maximum
SUBSEQUENT EVENTS
Warrant exercise price per share \| $ / shares		$ 2
Series B Right Warrants \| Subsequent event
SUBSEQUENT EVENTS
Number of common stock purchased by each warrant \| shares		1
Percentage of right warrants		90.00%
Number of trading days \| D		5
Series B Right Warrants \| Subsequent event \| Minimum
SUBSEQUENT EVENTS
Warrant exercise price per share \| $ / shares		$ 2
Series B Right Warrants \| Subsequent event \| Maximum
SUBSEQUENT EVENTS
Warrant exercise price per share \| $ / shares		$ 4