The number of warrants exercised during the period.

No definition available.

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Namespace Prefix:	blgo_
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- Definition

Shares issued during the period as a result of warrant exercises.

+ References

No definition available.

+ Details

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Namespace Prefix:	blgo_
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: 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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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

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

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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

- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
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Period Type:	instant

- Details

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- Details

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- Details

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Data Type:	na
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- Details

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Note 6 - Warrants (Details Textual) - USD ($)	12 Months Ended
Note 6 - Warrants (Details Textual) - USD ($)	Dec. 31, 2025	Dec. 31, 2024	Mar. 31, 2025	Dec. 31, 2023
Share Price (in dollars per share)	$ 0.18			$ 0.18
Class of Warrant or Right, Exercised During Period (in shares)	0	3,278,337
Warrants and Rights Outstanding	$ 5,000
The Six Month Warrants Issued in Unit Offerings [Member]
Warrants and Rights Outstanding, Term (Month)	6 months	6 years
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	1,131,580	1,849,284
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 0.23
The Six Month Warrants Issued in Unit Offerings [Member] \| Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.23
The Six Month Warrants Issued in Unit Offerings [Member] \| Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.4
The Five Year Warrants Issued in Unit Offerings [Member]
Warrants and Rights Outstanding, Term (Month)	5 years	5 years
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	1,131,580	2,278,232
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.29
The Five Year Warrants Issued in Unit Offerings [Member] \| Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.19
The Five Year Warrants Issued in Unit Offerings [Member] \| Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.5
Warrants Issued in Unit Offerings [Member]
Warrants and Rights Outstanding	$ 174,000	$ 230,000
Investors [Member]
Stock Issued During Period, Shares, Exercise of Warrants (in shares)		3,278,337
Proceeds from Warrant Exercises		$ 756,000