Note 8 - Debt (Details Textual)								1 Months Ended	2 Months Ended	12 Months Ended
Note 8 - Debt (Details Textual)	Jan. 20, 2026 USD ($) shares	Jan. 01, 2026 USD ($)	Dec. 31, 2024 USD ($)	Oct. 31, 2024 USD ($)	Sep. 27, 2024 USD ($)	May 28, 2024 USD ($)	May 01, 2020 USD ($)	Feb. 28, 2025 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($) $ / shares shares	Dec. 31, 2024 USD ($)	Mar. 10, 2025 $ / shares	Jan. 17, 2025 USD ($) $ / shares	Dec. 31, 2023	Aug. 31, 2021 USD ($)
Preferred stock, par value (in dollars per share) \| $ / shares												$ 0.001
Stock Issued During Period, Shares, Financing Costs \| shares										15,000
Stock Issued for Financing Costs, Value										$ 49,650	$ 0
Paycheck Protection Program CARES Act [Member]
Debt Instrument, Interest Rate, Stated Percentage							1.00%							1.00%
Proceeds from Issuance of Long-Term Debt							$ 130,200
Net Cash Provided by (Used in) Financing Activities															$ 96,795
Notes Payable			$ 10,592							(0)	10,592
Merchant Cash Advance Agreement [Member]
Proceeds from Short-Term Debt			50,000	$ 268,000	$ 99,250	$ 198,500
Short Term Borrowings, Future Receivables Purchases Total				228,480	136,000	272,000
Debt Instrument, Periodic Payment				$ 8,160	$ 4,857	$ 9,714
Short-term Debt, Outstanding Amount			$ 187,921							$ (0)	$ 187,921
Amended September 2024 Merchant Cash Advance Agreement [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument, Periodic Payment								$ 1,214
Amended September 2024 Merchant Cash Advance Agreement [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument, Periodic Payment								4,585
Amended September 2024 Merchant Cash Advance Agreement [Member] \| Debt Instrument, Redemption, Period Three [Member]
Debt Instrument, Periodic Payment								3,643
Amended October 2024 Merchant Cash Advance Agreement [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument, Periodic Payment								2,040
Amended October 2024 Merchant Cash Advance Agreement [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument, Periodic Payment								8,160
Amended October 2024 Merchant Cash Advance Agreement [Member] \| Debt Instrument, Redemption, Period Three [Member]
Debt Instrument, Periodic Payment								$ 36,120
Convertible Debt [Member]
Conversion rate (in dollars per share) \| $ / shares										$ 5.46
Debt Issuance Costs, Net										$ 164,000
Debt Instrument, Interest Rate, Stated Percentage										7.00%
Five Narrow Lane LP (“FNL”) [Member]
Debt Instrument, Face Amount													$ 2,300,000
Proceeds from Issuance of Debt									$ 2,050,000	$ 2,050,000
Debt Instrument, Conversion, Multiplier													3
Conversion rate (in dollars per share) \| $ / shares										$ 5.46
Debt Issuance Costs, Net										$ 255,000
Five Narrow Lane LP (“FNL”) [Member] \| Subsequent Event [Member]
Proceeds from Issuance of Debt	$ 250,000	$ 250,000
Five Narrow Lane LP (“FNL”) [Member] \| Conversion Of Additional Debenture Into Common Stock [Member]
Convertible note										$ 1,783,550
Senior secured convertible debenture (in shares) \| shares										326,658
Five Narrow Lane LP (“FNL”) [Member] \| Conversion Of Additional Debenture Into Common Stock [Member] \| Subsequent Event [Member]
Convertible note	$ 516,450
Senior secured convertible debenture (in shares) \| shares	109,318
Five Narrow Lane LP (“FNL”) [Member] \| Series C Preferred Stock [Member]
Preferred stock, par value (in dollars per share) \| $ / shares													$ 0.001

BLACKBOXSTOCKS INC. 10-K