| Document and Entity Information (USD $) | 3 Months Ended | |
| Aug. 31, 2013 | Oct. 08, 2013 | |
| Document And Entity Information | ||
| Entity Registrant Name | TAYLOR DEVICES INC | |
| Entity Central Index Key | 96536 | |
| Document Type | 10-Q | |
| Document Period End Date | 31-Aug-13 | |
| Amendment Flag | FALSE | |
| Current Fiscal Year End Date | -26 | |
| Is Entity a Well-known Seasoned Issuer? | No | |
| Is Entity a Voluntary Filer? | No | |
| Is Entity's Reporting Status Current? | Yes | |
| Entity Filer Category | Smaller Reporting Company | |
| Entity Public Float | $28,600,000 | |
| Entity Common Stock, Shares Outstanding | 3,341,690 | |
| Document Fiscal Period Focus | Q1 | |
| Document Fiscal Year Focus | 2014 |
| Balance Sheets (Unaudited) (USD $) | Aug. 31, 2013 | 31-May-13 |
| Current assets: | ||
| Cash and cash equivalents | $74,387 | $1,997,874 |
| Accounts receivable, net | 2,637,224 | 2,244,575 |
| Inventory | 8,785,903 | 9,124,186 |
| Costs and estimated earnings in excess of billings | 3,121,918 | 2,457,822 |
| Other current assets | 1,599,854 | 1,519,513 |
| Total current assets | 16,219,286 | 17,343,970 |
| Maintenance and other inventory, net | 903,268 | 904,299 |
| Property and equipment, net | 7,700,441 | 7,211,162 |
| Other assets | 160,428 | 159,078 |
| Total assets | 24,983,423 | 25,618,509 |
| Current liabilities: | ||
| Accounts payable | 1,064,731 | 1,209,597 |
| Accrued commissions | 516,118 | 436,732 |
| Billings in excess of costs and estimated earnings | 167,840 | 171,881 |
| Other current liabilities | 765,670 | 1,736,357 |
| Total current liabilities | 2,514,359 | 3,554,567 |
| Long-term liabilities | 398,185 | 398,185 |
| Stockholders' Equity: | ||
| Common stock and additional paid-in capital | 7,697,851 | 7,493,992 |
| Retained earnings | 16,872,011 | 16,670,748 |
| Treasury stock - at cost | -2,498,983 | -2,498,983 |
| Total stockholders'equity | 22,070,879 | 21,665,757 |
| Total liabilities and shareholders' equity | $24,983,423 | $25,618,509 |
| Statements of Operations (Unaudited) (USD $) | 3 Months Ended | |
| Aug. 31, 2013 | Aug. 31, 2012 | |
| Income Statement [Abstract] | ||
| Sales, net | $5,296,666 | $7,316,667 |
| Cost of goods sold | 4,017,565 | 4,698,057 |
| Gross profit | 1,279,101 | 2,618,610 |
| Selling, general and administrative expenses | 1,025,186 | 1,722,673 |
| Operating income | 253,915 | 895,937 |
| Other income, net | 8,348 | 6,880 |
| Income before provision for income taxes | 262,263 | 902,817 |
| Provision for income taxes | 61,000 | 295,000 |
| Net income | $201,263 | $607,817 |
| Basic and diluted earnings per common share | $0.06 | $0.18 |
| Statements of Cash Flows (Unaudited) (USD $) | 3 Months Ended | |
| Aug. 31, 2013 | Aug. 31, 2012 | |
| Operating activities: | ||
| Net income | $201,263 | $607,817 |
| Adjustments to reconcile net income to net cash flows from operating activities: | ||
| Depreciation and amortization | 178,110 | 127,384 |
| Stock options issued for services | 43,301 | 35,599 |
| Changes in other assets and liabilities: | ||
| Accounts receivable | -392,649 | -2,747,163 |
| Inventory | 339,314 | -676,722 |
| Costs and estimated earnings in excess of billings | -664,096 | 1,628,592 |
| Other current assets | -80,341 | 132,242 |
| Accounts payable | -144,866 | -1,519,105 |
| Accrued commissions | 79,386 | 69,237 |
| Billings in excess of costs and estimated earnings | -4,041 | -433,292 |
| Other current liabilities | -970,687 | 27,503 |
| Net operating activities | -1,415,306 | -2,747,908 |
| Investing activities: | ||
| Acquisition of property and equipment | -667,389 | -528,188 |
| Other investing activities | -1,350 | -1,346 |
| Net investing activities | -668,739 | -529,534 |
| Financing activities: | ||
| Net short-term borrowings and repayment of long-term debt | 3,478,343 | |
| Proceeds from issuance of common stock, net | 160,558 | 2,963 |
| Net financing activities | 160,558 | 3,481,306 |
| Net change in cash and cash equivalents | -1,923,487 | 203,864 |
| Cash and cash equivalents - beginning | 1,997,874 | 73,952 |
| Cash and cash equivalents - ending | $74,387 | $277,816 |
| Condensed financial statements note | 3 Months Ended | ||
| Aug. 31, 2013 | |||
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||
| Condensed financial statements note | Notes to Condensed Consolidated Financial Statements | ||
| 1 | The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions to Form 10-Q. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of only normal recurring accruals) necessary to present fairly the financial position as of August 31, 2013 and May 31, 2013, the results of operations for the three months ended August 31, 2013 and 2012, and cash flows for the three months ended August 31, 2013 and 2012. These financial statements should be read in conjunction with the audited financial statements and notes thereto contained in the Company's Annual Report to Shareholders for the year ended May 31, 2013. | ||
| 2 | The Company has evaluated events and transactions for potential recognition or disclosure in the financial statements through the date the financial statements were issued. | ||
| 3 | There is no provision nor shall there be any provisions for profit sharing, dividends, or any other benefits of any nature at any time for this fiscal year. | ||
| 4 | For the three month periods ended August 31, 2013 and August 31, 2012, the net income was divided by 3,318,602 and 3,309,758, respectively, which is net of the Treasury shares, to calculate the net income per share. | ||
| 5 | The results of operations for the three month period ended August 31, 2013 are not necessarily indicative of the results to be expected for the full year. | ||
| 6 | Recently issued Financial Accounting Standards Board Accounting Standards Codification guidance has either been implemented or is not significant to the Company. | ||
| Condensed financial statements note (Details Narrative) | 3 Months Ended | |
| Aug. 31, 2013 | Aug. 31, 2012 | |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Weighted average common shares outstanding | 3,318,602 | 3,309,758 |
