| Significant Accounting Policies (Policies) | 12 Months Ended |
| Dec. 31, 2019 |
| Accounting Policies [Abstract] | |
| Consolidation, Policy [Policy Text Block] | Principles of Consolidation The consolidated financial statements include the accounts of CVD Equipment Corporation and its wholly owned subsidiaries. The Company has five 411519R, 555 555 |
| Use of Estimates, Policy [Policy Text Block] | Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The Company’s significant estimates are the accounting for certain items such as revenues on long-term contracts recognized on the input method, depreciation and amortization, valuation of inventories at the lower of cost or net realizable value; allowance for doubtful accounts receivable; valuation allowances for deferred tax assets, impairment considerations of long-lived assets and valuation of stock-based compensation. |
| Revenue from Contract with Customer [Policy Text Block] | Revenue Recognition The Company designs, manufactures and sells custom chemical vapor deposition equipment through contractual agreements. These system sales require the Company to deliver functioning equipment that is generally completed within three eighteen Incurred costs include all direct material and labor costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools, repairs and depreciation costs. Contract material costs are included in incurred costs when the project materials have been purchased or moved to work in process, and installed, as required by the project’s engineering design. Cost based input methods of revenue recognition require the Company to make estimates of costs to complete the projects. In making such estimates, significant judgment is required to evaluate assumptions related to the costs to complete the projects, including materials, labor and other system costs. If the estimated total costs on any contract are greater than the net contract revenues, the Company recognizes the entire estimated loss in the period the loss becomes known and can be reasonably estimated. “Contract assets,” include unbilled amounts typically resulting from sales under contracts when revenue recognition is utilized and revenue recognized exceeds the amount billed to the customer. The amount may not “Contract liabilities,” include advance payments and billings in excess of revenue recognized. Contract liabilities are classified as current based on our contract operating cycle and reported on a contract-by-contract basis, net of revenue recognized, at the end of each reporting period. For outright sales of products, revenue is recognized when control of the promised products or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those products or services (the transaction price). A performance obligation is a promise in a contract to transfer a distinct product or service to a customer and is the unit of account under ASC 606 |
| Inventory, Policy [Policy Text Block] | Inventories Inventories are valued at the lower of cost (determined on the first first |
| Income Tax, Policy [Policy Text Block] | Income Taxes Deferred tax assets and liabilities are determined based on the estimated future tax effects of temporary differences between the financial statements and tax bases of assets and liabilities, as measured by using the future enacted tax rates. Deferred tax expense (benefit) is the result of changes in the deferred tax assets and liabilities. The Company records a valuation allowance against deferred tax assets when it is more likely than not not Investment tax credits are accounted for by the flow-through method, reducing income taxes currently payable and the provision for income taxes in the period the assets giving rise to such credits are placed in service. To the extent such credits are not The Company recognizes the tax benefit from an uncertain tax position only if it is more-likely-than- not 50% The accounting guidance on accounting for uncertainty in income taxes also addresses derecognition, classification, interest and penalties on income taxes, and accounting in interim periods. The Company does not December 31, 2019 The Company and its subsidiaries file combined income tax returns in the U.S. Federal and New York State jurisdiction. In addition, the parent company files standalone tax returns in California, Delaware, Florida, Michigan, Minnesota, New Hampshire and Wisconsin. The Company is no 2015. |
| Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] | Impairment of Long Lived Assets and Intangibles Long-lived assets consist primarily of property, plant, and equipment. Intangibles consist of patents, copyrights and intellectual property, licensing agreements and certifications. Long-lived assets are reviewed for impairment whenever events or circumstances indicate their carrying value may not 360 10 35, no December 31, 2019 2018. |
| Internal Use Software, Policy [Policy Text Block] | Computer Software The Company follows ASC 350 40, no December 31, 2019 December 31, 2018 three five $142,480 $144,500 December 31, 2019 2018, |
| Property, Plant and Equipment, Policy [Policy Text Block] | Property, Plant and Equipment Property, plant and equipment are recorded at cost. Depreciation is determined on a straight-line basis for buildings and building improvements over 5 39 5 8 |
| Intangible Assets, Finite-Lived, Policy [Policy Text Block] | Intangible Assets The cost of intangible assets is being amortized on a straight-line basis over their estimated initial useful lives which ranged from 5 20 2019 2018 $120,488 $115,800, |
| Research and Development Expense, Policy [Policy Text Block] | Research & Development Research and development costs are expensed as incurred. Our laboratory staff conducts research and development independent of customer orders. In 2019, $598,000 $607,000 2018. |
| Standard Product Warranty, Policy [Policy Text Block] | Product Warranty The Company records warranty costs as incurred and does not |
| Earnings Per Share, Policy [Policy Text Block] | Earnings Per Share Basic earnings per common share is computed by dividing the net income by the weighted average number of shares of common stock outstanding during each period. When applicable, diluted earnings per common share is determined using the weighted-average number of common shares outstanding during the period, adjusted for the dilutive effect of common stock equivalents, consisting of shares that might be adjusted upon exercise of common stock options and warrants. Potential common shares issued are calculated using the treasury stock method, which recognizes the use of proceeds that could be obtained upon the exercise of options and warrants in computing diluted earnings per share. It assumes that any proceeds would be used to purchase common stock at the average market price of the common stock during the period. |
| Cash and Cash Equivalents, Policy [Policy Text Block] | Cash and Cash Equivalents The Company had cash and cash equivalents of $8.7 $11.4 December 31, 2019 2018, three $2.1 $7.5 December 31, 2019 December 31, 2018, The Company places most of its temporary cash investments with financial institutions, which from time to time may December 31, 2019 December 31, 2018 $5,198,000 $6,920,000 |
| Concentration Risk, Credit Risk, Policy [Policy Text Block] | Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents, and accounts receivable. The Company places its cash equivalents with financial institutions and invests its excess cash primarily in treasury bills, certificates of deposit or money market instruments. The Company has established guidelines relative to credit ratings and maturities that seek to maintain stability and liquidity. The Company sells products and services to various companies across several industries in the ordinary course of business. The Company routinely assesses the financial strength of its customers and maintains allowances for anticipated losses based upon historical experience. |
| Receivable [Policy Text Block] | Accounts Receivable The Company sells products and services to various companies across several industries in the ordinary course of business. The Company performs ongoing credit evaluations to assess the probability of accounts receivable collection based on a number of factors, including past transaction experience, evaluation of their credit history and review of the invoicing terms of the contract to determine the financial strength of its customers. The Company has accounts receivables from certain customers that exceed 10%. December 31, 2019 2018, three 61% two 42%, Accounts receivable is presented net of an allowance for doubtful accounts of $24,000 December 31, 2019 2018, may |
| Sales Concentrations, Policy [Policy Text Block] | Sales Concentrations Revenue to a single customer in any one 10.0% 39.3% one 38.2%, 2019 2018. may may Export sales to customers represented approximately 21.3% 9.9% December 31, 2019 2018, 2019 2018 not |
| Fair Value of Financial Instruments, Policy [Policy Text Block] | Fair V alue of Financial Instruments The carrying amounts of financial instruments including cash and cash equivalents, accounts receivable, net, accounts payable, deferred revenue and customer deposits approximate fair value due to the relatively short-term maturity of these instruments. The carrying value of long-term debt approximates fair value based on prevailing borrowing rates currently available for loans with similar terms and maturities. |
| Share-based Payment Arrangement [Policy Text Block] | Stock-Based Compensation The Company records stock-based compensation in accordance with the provisions set forth in ASC 718, 718 |
| Shipping and Handling, Policy [Policy Text Block] | Shipping and Handling It is the Company’s policy to include freight charges billed to customers in total revenue. The amount included in revenue was $39,000 $61,200 December 31, 2019 2018, |
| New Accounting Pronouncements, Policy [Policy Text Block] | Recently Adopted Accounting Standards In June 2016, 2016 13, Financial Instruments – Credit Losses (Topic 326 November 15, 2019, December 15, 2022 December 15, 2018 In February 2016 No. 2016 02, 842 2016 02 2016 02 not 12 not 2016 02 December 15, 2018 2016 02 January 1, 2019. may An entity that elects to apply the practical expedients will, in effect, continue to account for leases that commence before the effective date in accordance with previous GAAP unless the lease is modified, except that lessees are required to recognize a right-of-use asset and a lease liability for all operating leases at each reporting date based on the present value of the remaining minimum rental payments that were tracked and disclosed under previous GAAP. In addition, FASB has amended Topic 842 842 2016 02. one December 31, 2020 2019 $84,000 December 31, 2019. We believe there is no not may |
