Document and Entity Information - shares	9 Months Ended
Feb. 28, 2025	Mar. 28, 2025
Registrant CIK	0000096536
Fiscal Year End	--05-31
Document Type	10-Q
DocumentQuarterlyReport	true
Document Period End Date	Feb. 28, 2025
DocumentTransitionReport	false
EntityFileNumber	0-3498
Entity Registrant Name	Taylor Devices, Inc.
EntityIncorporationStateCountryCode	NY
EntityTaxIdentificationNumber	16-0797789
EntityAddressAddressLine1	90 Taylor Drive
EntityAddressCityOrTown	North Tonawanda
EntityAddressStateOrProvince	NY
EntityAddressPostalZipCode	14120
EntityAddressAddressDescription	Address of principal executive offices
CityAreaCode	716
LocalPhoneNumber	694-0800
PhoneFaxNumberDescription	Registrant’s telephone number, including area code
EntityCurrentReportingStatus	Yes
EntityInteractiveDataCurrent	Yes
EntityFilerCategory	Non-accelerated Filer
EntitySmallBusiness	true
EntityEmergingGrowthCompany	false
EntityShellCompany	false
EntityCommonStockSharesOutstanding		3,136,728
Amendment Flag	false
DocumentFiscalYearFocus	2025
DocumentFiscalPeriodFocus	Q3
Common Class A
Security12bTitle	Common Stock, $.025 par value per share
TradingSymbol	TAYD
SecurityExchangeName	NASDAQ
Series A Preferred Stock
Security12bTitle	Preferred Stock Purchase Rights

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Area code of city

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End date of current fiscal year in the format --MM-DD.

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Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.

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This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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Boolean flag that is true only for a form used as an quarterly report.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Boolean flag that is true only for a form used as a transition report.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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Description of the kind of address for the entity, if needed to distinguish more finely among mailing, principal, legal, accounting, contact or other addresses.

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Address Line 1 such as Attn, Building Name, Street Name

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Name of the City or Town

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Code for the postal or zip code

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Name of the state or province.

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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.

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- Definition

Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.

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Indicate if registrant meets the emerging growth company criteria.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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No definition available.

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Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.

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Two-character EDGAR code representing the state or country of incorporation.

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- Definition

Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.

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- Definition

Indicates that the company is a Smaller Reporting Company (SRC).

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- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Local phone number for entity.

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No definition available.

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Description of Phone or Fax Number

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- Definition

Title of a 12(b) registered security.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Name of the Exchange on which a security is registered.

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-Name Exchange Act
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Trading symbol of an instrument as listed on an exchange.

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