Stock Issued During Period, Number of Grantees

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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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.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

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- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

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Stock Options and Incentive Plans - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended						3 Months Ended
	Jul. 31, 2026 USD ($) boardMember $ / shares shares	Mar. 31, 2026 USD ($) boardMember $ / shares shares	Dec. 31, 2025 USD ($) boardMember $ / shares shares	Sep. 30, 2025 USD ($) boardMember $ / shares shares	Jul. 31, 2025 USD ($) boardMember $ / shares shares	May 31, 2025 USD ($) $ / shares shares	Jul. 31, 2026 USD ($) $ / shares shares	Jul. 31, 2025 USD ($) $ / shares shares	Nov. 30, 2016 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock awarded to directors \| $							$ 50	$ 63
Share-based payment arrangement, expense \| $							$ 116	$ 34
Butler National Corporation 2016 Equity Incentive Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized (in shares) \| shares									12,500,000
Stock award to director (in shares) \| shares	20,222			81,818		51,724
Shares issued, price per share (in dollars per share) \| $ / shares	$ 4.95			$ 1.65		$ 1.45	$ 4.95
Stock awarded to directors \| $	$ 100			$ 135		$ 75
Share-based compensation arrangement by share-based payment award, award vesting period (year)	2 years			2 years		2 years
Butler National Corporation 2016 Equity Incentive Plan \| Restricted Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, forfeited in period (in shares) \| shares							0	5,780
Butler National Corporation 2016 Equity Incentive Plan \| Director
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock award to director (in shares) \| shares	11,496	13,020	18,112	30,300	42,515
Shares issued, price per share (in dollars per share) \| $ / shares	$ 4.35	$ 3.84	$ 2.76	$ 1.65	$ 1.47		$ 4.35	$ 1.47
Stock awarded to directors \| $	$ 50	$ 50	$ 50	$ 50	$ 63
Number of grantees \| boardMember	4	4	4	4	5