Document And Entity Information Document Information [Table] Document Information [Line Items] Document Type Document Quarterly Report Document Transition Report Document Period End Date Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag BALANCE SHEETS Statement [Table] Statement [Line Items] Statement Assets [Abstract] ASSETS Assets, Current [Abstract] Current Assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Marketable Securities, Current Investments - marketable securities, short term Accounts Receivable, after Allowance for Credit Loss, Current Balance at end of period Balance at beginning of period Trade, less allowance for doubtful accounts of $15,000 Accounts and Other Receivables, Net, Current Other Inventory, Net Inventory, net Inventories, net Amount of asset related to consideration paid in advance for purchase orders for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Prepaid Purchase Orders Expense, Current, Total Prepaid purchase orders Prepaid Expense, Current Prepaid expenses Assets, Current Total current assets Property, Plant and Equipment, Net [Abstract] Property and Equipment, at cost Machinery and Equipment, Gross Machinery and equipment Furniture and Fixtures, Gross Furniture and fixtures Leasehold Improvements, Gross Leasehold improvements Construction in Progress, Gross Construction in progress Property, Plant and Equipment, Gross Property and equipment, gross Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less accumulated depreciation and amortization Property, Plant and Equipment, Net Property and equipment, net Marketable Securities, Noncurrent Investments, net - marketable securities, long term Operating Lease, Right-of-Use Asset Right of use asset, net Other Assets Other assets Sum of the carrying amounts as of the balance sheet date of all assets other than property and equipment that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Assets Excluding Property and Equipment, Noncurrent Total other assets Assets TOTAL ASSETS Liabilities and Equity [Abstract] LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities, Current [Abstract] Current Liabilities Operating Lease, Liability, Current Operating lease obligations, current portion Accounts Payable, Current Accounts payable Contract with Customer, Liability, Current Balance at end of period Balance at beginning of period Customer deposits Employee-related Liabilities, Current Accrued compensation Accrued Liabilities and Other Liabilities Accrued expenses and other Liabilities, Current Total current liabilities Deferred Income Tax Liabilities, Net Deferred tax liability Operating Lease, Liability, Noncurrent Operating lease obligations, net of current portion Liabilities Total liabilities Equity, Attributable to Parent [Abstract] Shareholders' Equity Common Stock, Value, Issued Common stock, no par value, authorized 15,000,000 shares; 4,600,003 and 4,583,407 shares issued, respectively Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings Treasury Stock, Common, Value Less: Treasury stock, at cost (150,000 and 100,000 common shares, respectively) Equity, Attributable to Parent Adoption of ASU Balance Balance Total shareholders' equity Liabilities and Equity TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY Accounts Receivable, Allowance for Credit Loss, Current Allowance for doubtful accounts (in dollars) Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Treasury Stock, Common, Shares Treasury stock, shares at cost STATEMENTS OF INCOME Revenue from Contract with Customer, Including Assessed Tax Revenue Revenue, Product and Service [Extensible Enumeration] Cost of Goods and Services Sold Cost of revenue Cost, Product and Service [Extensible Enumeration] Gross Profit Gross profit General and Administrative Expense General and administrative expense The charge against earnings resulting from an imposter scam. Imposter Scam Charge Fraud expense Research and Development Expense Research and development expense Selling and Marketing Expense Marketing and sales expense Operating Income (Loss) Income from operations Interest Income (Expense), Operating Interest income, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before provision for income taxes Income Tax Expense (Benefit) Total Income tax expense Net Income (Loss) Net income NET INCOME No definition available. Earning Per Share Basic And Diluted [Abstract] Earnings per share - basic and diluted (Note 7) Earnings Per Share Income per common share Earnings Per Share, Basic Basic (In dollars per share) Earnings Per Share, Diluted Diluted (In dollars per share) Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted average shares outstanding Weighted Average Number of Shares Outstanding, Basic Basic (In shares) Weighted average common shares outstanding - basic Weighted Average Number of Shares Outstanding, Diluted Diluted (In shares) Weighted average shares outstanding - diluted Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Additional Paid-In Capital Retained Earnings [Member] (Accumulated Deficit) Retained Earnings Treasury Stock, Common [Member] Treasury Stock Treasury Stock, Value, Acquired, Cost Method Purchase of treasury stock Stock Issued During Period, Value, New Issues Common stock issued (Note 5) Common stock issued STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Depreciation, Amortization and Accretion, Net Depreciation and accretion Amortization Amortization of patents Share-Based Payment Arrangement, Noncash Expense Stock based compensation Gain (Loss) on Disposition of Property Plant Equipment (Gain) on disposal of equipment Increase (Decrease) in Deferred Income Taxes Deferred taxes Inventory, LIFO Reserve, Period Charge Inventory reserve Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventories Amount of increase (decrease) in prepaid purchase orders. Increase (Decrease) In Prepaid Purchase Orders Prepaid purchase orders Increase (Decrease) in Prepaid Expense Prepaid expenses Increase (Decrease) in Accounts Payable Accounts payable Amount of increase (decrease) in customer deposits. Increase (Decrease) In Customer Deposit Customer deposits Increase (Decrease) in Accrued Liabilities Accrued liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES Proceeds from Sale of Machinery and Equipment Proceeds from sale of equipment Payments to Acquire Marketable Securities Purchases of marketable securities Proceeds from Sale and Maturity of Marketable Securities Proceeds from maturities of marketable securities Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES Payments for Repurchase of Common Stock Purchase of treasury stock Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect NET INCREASE IN CASH Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations CASH - End of period CASH - Beginning of year Supplemental Income Statement Elements [Abstract] SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION N/a. Cash Paid During Period [Abstract] Cash paid during the year for: Income Taxes Paid Income taxes Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] SUPPLEMENTAL DISCLOSURES OF NONCASH INVESTING AND FINANCING ACTIVITIES Increase (Decrease) in Asset Retirement Obligations Increase in asset retirement obligation Business Organization and Purpose Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Business Organization and Purpose Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Recent Accounting Pronouncements Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Investments Common Stock and Stock Options Share-Based Payment Arrangement [Text Block] Common Stock and Stock Options Inventories Inventory Disclosure [Text Block] Inventories Earnings Per Share [Text Block] Earnings Per Share Line of Credit Debt Disclosure [Text Block] Line of Credit Income Taxes Income Tax Disclosure [Text Block] Income Taxes Operating Lease Lessee, Operating Leases [Text Block] Operating Lease Segment Information Segment Reporting Disclosure [Text Block] Segment Information Subsequent Event Subsequent Events [Text Block] Subsequent Event Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Revenue from Contract with Customer [Policy Text Block] Revenue Recognition Disclosure of accounting policy for contract with customer assets. Contract with Customer, Contract Asset, [Policy Text Block] Contract assets Disclosure of accounting policy for contract with customer deposits. Contract with Customer, Contract Deposits, [Policy Text Block] Customer deposits Use of Estimates, Policy [Policy Text Block] Use of Estimates Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Schedule of contract assets and customer deposits Debt Securities, Held-to-Maturity [Table Text Block] Schedule of amortized cost, fair value of investments, and related gross unrealized gains/(losses) Schedule of Inventory, Current [Table Text Block] Schedule of inventories Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Summary of reconciliation of earnings per share calculations Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of components of the income tax expense Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Schedule of annual undiscounted cash outflows of the operating lease liabilities The tabular disclosure of other information regarding lessee, operating lease. Lessee Operating Lease Other Information [Table Text Block] Schedule of operating lease other information Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Schedule of segment operating profit (loss) for the Company's reportable segment Number of Operating Segments Number of operating segments Presentation of various accounting policies. Accounting Policies [Table] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Geographic Concentration Risk [Member] Product Concentration Risk [Member] Represents the information pertaining to photonics industry. Photonics Industry [Member] Photonics industry Customer Concentration Risk [Member] Customer Concentration Risk Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Revenue from Contract with Customer Benchmark [Member] Revenue from Contract with Customer Benchmark Customer [Axis] Customer [Domain] Information relating to the top two customers. Top two customers [Member] Top two customers