Name of the equity-based compensation arrangement plan. 2007 Plan [Member] Name of the equity-based compensation arrangement plan. 2000 Plan [Member] Information by name of employee stock ownership plan. Employee Stock Ownership Plan [Member] Employee Stock Ownership Plan [Member] Document And Entity Information Total of all stockholders' equity (deficit) items, before ESOP and Treasury stock. TotalStockholdersEquityBeforyEsopAndTreasuryStock Total stockholders equity before ESOP Basis Of Presentation. Net Income Per Share Stock Based Compensation Recently Issued Accounting Standards EmployeeStockOwnershipPlanAbstract Employee Stock Ownership Plan The entire disclosure for employee stock ownership plan. EmployeeStockOwnershipPlanTextBlock Employee Stock Ownership Plan Amendment Flag Stock Based Compensation Tables Employee Stock Ownership Plan Tables Stock-Based Compensation Details Narrative Amount of deferred tax benefit attributable to unrecognized share-based compensation. Deferred tax benefit related to unrecognized compensation costs Stock-Based Compensation Details Weighted Average Assumptions Stock-Based Compensation Details 1 Number of Shares Subject to Option Weight Average Exercise Price Weighted Average Remaining Contractual Term The contractual life of stock options under the Company's plans. ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodContractualTerm Granted Aggregate Intrinsic Value Average Grant Date Fair Value Weighted Average Number of Shares Subject to Option Employee Stock Ownership Plan Details Narrative Minimum number of hours worked per year for nonunion employees to participate in ESOP. Number of hours worked per year Current Fiscal Year End Date Employee Stock Ownership Plan Details Award Type [Axis] Document Period End Date Is Entity a Well-known Seasoned Issuer Is Entity a Voluntary Filer Is Entity's Reporting Status Current Entity Filer Category Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Common stock, per share value Document Fiscal Year Focus Document Fiscal Period Focus Document Type Trade accounts receivable, net Accounts payable Accrued expenses: Payroll and other taxes withheld and accrued Vacation ESOP payable Income taxes payable Salaries, wages and commissions Accumulated other comprehensive income (loss) Capital in excess of par value Adjustments to reconcile net income to net cash provided by operating activities: Stock based compensation expense Assets Total assets ASSETS: Assets, Current Total current assets Basis of Presentation Cash and Cash Equivalents, Period Increase (Decrease) Increase in cash and cash equivalents Cash and cash equivalents Cash and cash equivalents, end of year Cash and cash equivalents, beginning of year Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Common stock, par value Common stock, par value $.33-1/3 per share. Authorized 10,000,000 shares; Issued 3,029,874 shares on September 30, 2014 and June 30, 2014. Outstanding 2,359,001 on September 30, 2014 and 2,368,110 on June 30, 2014 (includes 92,917 and 97,500 unearned ESOP shares on September 30, 2014 and June 30, 2014, respectively) Common stock, shares issued Dividends per share Common stock, shares authorized Common stock, shares outstanding Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income Cost of sales Deferred income tax Deferred Tax Assets, Net of Valuation Allowance, Current Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Deferred income taxes Depreciation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock Based Compensation Dividends on common stock Net Income per Share. Basic Diluted Net income per share: Stock Option Plans [Member] ESOP compensation expense Employee Stock Ownership Plan (ESOP) Name [Axis] Deferred tax benefit related to stock based compensation Period in which compensation cost will be recognized Unrecognized compensation costs Unearned ESOP, shares Fair value of unreleased shares Plan description Employee Stock Ownership Plan ESOP Plan [Domain] Total shares held by the ESOP Allocated shares Committed-to-be-released shares Unreleased shares Excess Tax Benefit from Share-based Compensation, Operating Activities Excess tax benefits from share-based compensation Excess tax benefits from share-based compensation Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Loss on disposal of assets Gross Profit Gross profit Income Statement [Abstract] Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income before income taxes Provision for income taxes Income taxes paid Income tax receivable Increase (Decrease) in Accounts Receivable (Increase) decrease in trade receivable, net Increase (decrease) in income taxes payable (Decrease) increase in accrued salaries, wages and commissions Increase in accounts payable Decrease in other accrued expenses Changes in assets and liabilities: Decrease in ESOP payable Increase (Decrease) in Inventories Increase in inventories, net Decrease in vacation accrual Increase (Decrease) in Income Taxes Receivable Decrease (increase) in income taxes receivable Increase (Decrease) in Prepaid Expense and Other Assets (Increase) decrease in prepaid expenses and other current assets (Decrease) increase in payroll & other taxes withheld and accrued Inventory, Net Total inventories Inventories: Costs relating to contracts in process, net of advance payments of $19,626 at September 30, 2014 and $142,616 at June 30, 2014 Work-in-process Raw materials Interest and dividend income Liabilities, Current Total current liabilities Liabilities and Equity Total liabilities and stockholders' equity Liabilities, Noncurrent Total liabilities LIABILITIES AND STOCKHOLDERS' EQUITY Investment securities Net income Net income Cash Flows From Financing Activities: Cash Flows From Investing Activities: Net Cash Provided by (Used in) Investing Activities Net cash provided by (used in) investing activities Cash Flows From Operating Activities: Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Recently Issued Accounting Standards Nonoperating Income (Expense) Total other income Loan receivable Operating Income (Loss) Operating income Other income Other Liabilities Disclosure [Abstract] Unrealized loss on investment securities Other Nonoperating Income Other Other comprehensive income, net of tax: Other Payments for Repurchase of Common Stock Purchase of treasury stock Payments to Acquire Available-for-sale Securities Purchase of investment securities Payments to Acquire Property, Plant, and Equipment Additions to property, plant and equipment Plan Name [Domain] Plan Name [Axis] Prepaid expenses and other current assets Proceeds from loan receivable Proceeds from exercise of stock options Proceeds from sale/maturity of investment securities Sale of treasury stock Advance payments of costs related to contracts in process Property, plant and equipment, net Retained earnings Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares Non-vested, ending balance Non-vested, beginning balance Expected option life (in years) Exercisable, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares Forfeited or expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value Forfeited or expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares Vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value Outstanding, ending Balance, beginning Vested Vested or expected to vest, end of period Balance, beginning Outstanding, ending Net sales Schedule of changes in non-vested stock options Schedule of stock option activity Schedule of weighted average assumptions for option awards Schedule of ESOP shares Selling, general and administrative expenses Weighted average fair value per share of options granted Granted Stock-based compensation Options granted Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Exercised Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Exercisable, end of period Aggregate intrinsic value of options exercised Expected stock price volatility Authorized shares under plan Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Forfeited or expired Forfeited or expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding, ending Balance, beginning Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Exercisable, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Exercisable, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding, ending Balance, beginning Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Vested or expected to vest, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Outstanding end of period Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Vested or expected to vest, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Vested or expected to vest, end of period Statement [Table] Statement [Line Items] Statement of Cash Flows [Abstract] Statement of Financial Position [Abstract] Exercised Stockholders' Equity Attributable to Parent Total stockholders' equity Supplemental Schedule of Cash Flow Information: Treasury stock, shares Treasury Stock, Value Treasury shares, cost of 0 and 661,764 shares on September 30, 2014 and June 30, 2014, respectively Treasury shares, cost of 670,873 and 661,764 shares on September 30, 2014 and June 30, 2014, respectively Unearned ESOP Shares Less: Unearned ESOP shares Less: Unearned ESOP shares Weighted average number of shares outstanding: Weighted Average Number of Shares Outstanding, Basic Basic Weighted Average Number of Shares Outstanding, Diluted Diluted