75000 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75030 - Statement - Condensed Consolidated Statements of Income link:presentationLink link:calculationLink link:definitionLink 75040 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 75050 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 995455 - Disclosure - Basis of Presentation and Accounting Policies link:presentationLink link:calculationLink link:definitionLink 995465 - Disclosure - Recently Issued Accounting Standards link:presentationLink link:calculationLink link:definitionLink 995475 - Disclosure - Inventories link:presentationLink link:calculationLink link:definitionLink 995485 - Disclosure - Short-term Investments link:presentationLink link:calculationLink link:definitionLink 995495 - Disclosure - Fair Value of Financial Instruments link:presentationLink link:calculationLink link:definitionLink 995505 - Disclosure - Net Income per Share link:presentationLink link:calculationLink link:definitionLink 995515 - Disclosure - Revenues by Products and Services link:presentationLink link:calculationLink link:definitionLink 995525 - Disclosure - Inventories (Tables) link:presentationLink link:calculationLink link:definitionLink 995535 - Disclosure - Short-term Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 995545 - Disclosure - Fair Value of Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 995555 - Disclosure - Revenues by Products and Services (Tables) link:presentationLink link:calculationLink link:definitionLink 995565 - Disclosure - Inventories - Summary of Breakdown of Elements of Inventory (Detail) link:presentationLink link:calculationLink link:definitionLink 995575 - Disclosure - Short-term Investments - Summary of Short-term Investments (Detail) link:presentationLink link:calculationLink link:definitionLink 995585 - Disclosure - Fair Value of Financial Instruments - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) link:presentationLink link:calculationLink link:definitionLink 995595 - Disclosure - Net Income per Share (Additional Information) (Details) link:presentationLink link:calculationLink link:definitionLink 995605 - Disclosure - Revenues by Products and Services - Revenues by Products and Services (Detail) link:presentationLink link:calculationLink link:definitionLink Available-for-sale Securities, Gross Unrealized Gains Available For Sale Securities Accumulated Gross Unrealized Gain Before Taxes Available for sale securities accumulated gross unrealized gain before taxes. Available-for-sale Securities, Gross Unrealized Gains Gross profit Gross Profit Preferred stock, shares issued Preferred Stock, Shares Issued Dividends, Cash, Total Dividends, Cash Cash dividend Cash dividend Commitments and contingencies Commitments and Contingencies Diluted Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding, Beginning Balance Preferred Stock, Shares Outstanding, Ending Balance Contract with Customer, Sales Channel [Domain] Common stock, shares issued Common Stock, Shares, Issued Income tax expense Income Tax Expense (Benefit) Income Tax Expense (Benefit), Total Available For Sale Securities Accumulated Gross Unrealized Loss Before Taxes Available for sale securities accumulated gross unrealized loss before taxes. Available-for-sale securities, Gross Unrealized Losses Available-for-sale securities, Gross Unrealized Losses Mortgage notes receivable, less current portion Mortgage Notes Receivable Long Term Mortgage notes receivable, long term. Increase in cash surrender value of life insurance Increase Decrease In Cash Surrender Value Of Life Insurance Increase decrease in cash surrender value of life insurance. Increase Decrease in Fair Market Value of Equity Investments Increase decrease in fair market value of equity investments. Decrease in fair market value of equity investment Cost of sales Cost of Product and Service Sold Cost of Goods and Services Sold, Total Total other income Nonoperating Income (Expense) Income Statement [Abstract] Basic Earnings Per Share, Basic Earnings Per Share, Basic, Total Document Period End Date Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Payments to Acquire Property, Plant, and Equipment, Total Common Stock, Shares Authorized Common stock, shares authorized Statement of Stockholders' Equity [Abstract] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Income taxes payable Increase (Decrease) in Income Taxes Payable Proceeds from certificates of deposit Proceeds From Sale And Maturity Of Certificates Of Deposit Proceeds From Sale And Maturity Of certificates Of Deposit. Accounting Standards Update and Change in Accounting Principle [Text Block] Recently Issued Accounting Standards Mortgage notes receivable Mortgage Notes Receivable Current Mortgage notes receivable, current. Supplemental Cash Flow Elements [Abstract] Supplemental disclosure of cash flows information: Total assets Assets Title of 12(b) Security Preferred Stock, Value, Issued Preferred stock, $0.10 par value, 500,000 shares authorized; none issued and outstanding Purchase of treasury stock Payments for Repurchase of Common Stock Interest Paid, Excluding Capitalized Interest, Operating Activity Interest paid Treasury Stock, Value, Acquired, Cost Method Aggregate value Purchase of treasury stock Total stockholders' equity Balance Balance Equity, Attributable to Parent Treasury Stock, Common [Member] Treasury Stock [Member] Other assets Other Assets, Noncurrent Net Income per Share Earnings Per Share [Text Block] Homes sold to independent dealers and through manufactured home parks, net [Member] Sales Channel, Through Intermediary [Member] Earnings From Finance Revenue Sharing Escrow Arrangement. Earnings From Finance Revenue Sharing Escrow Arrangement Proceeds received under escrow arrangement Homes sold through Company owned sales centers [Member] Sales Channel, Directly to Consumer [Member] Available for sale security at fair value. Available For Sale Security At Fair Value Short-term investments at fair value Entity Interactive Data Current Inventory, Finished Homes Finished homes - Other manufactured Common Stock, Value, Issued Common stock, $0.10 par value, 10,000,000 shares authorized; 5,364,907 shares issued; 3,153,665 and 3,253,665 shares outstanding Income taxes payable Taxes Payable, Current Taxes Payable, Current, Total Raw materials Inventory, Raw Materials, Gross Proceeds from Sale of Property, Plant, and Equipment Proceeds from Sale of Property, Plant, and Equipment, Total Proceeds disposal of property, plant and equipment Liabilities Total liabilities Product and Service [Axis] Retained earnings Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Total Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Gain on disposal of property, plant and equipment Gain (Loss) on Disposition of Property Plant Equipment Gain (Loss) on Disposition of Property Plant Equipment, Total Gain on disposal of property, plant and equipment Accounts payable Increase (Decrease) in Accounts Payable Increase (Decrease) in Accounts Payable, Total Cash dividend per common share Common Stock, Dividends, Per Share, Declared Deferred Income Tax Liabilities, Net Deferred income taxes Available For Sale Securities Amortized Costs Available For Sale Securities Amortized Costs. Available-for-sale Securities, Amortized Cost Available-for-sale Securities, Amortized Cost Fair Value, Hierarchy [Axis] Fair Value Hierarchy and NAV [Axis] Total liabilities and stockholders' equity Liabilities and Equity Document Fiscal Period Focus Summary of Breakdown of Elements of Inventory Schedule of Inventory, Current [Table Text Block] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Entity Current Reporting Status Proceeds and Payments From Sale And Collection Of Mortgage Notes Receivable. Proceeds and Payments From Sale And Collection Of Mortgage Notes Receivable. Collections on mortgage notes receivable Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Accounts payable Accounts Payable, Current Accounts Payable, Current, Total Document Transition Report Inventories Increase (Decrease) in Inventories Increase (Decrease) in Inventories, Total Accrued expenses and other current liabilities Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Current liabilities: Liabilities, Current [Abstract] Stockholders' equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Common Stock [Member] Common Stock [Member] Accounting Standards Update and Change in Accounting Principle [Abstract] Customer deposits Customer Deposits, Current Other income (expense): Nonoperating Income (Expense) [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Assets Assets [Abstract] Entity Central Index Key Current Fiscal Year End Date Document Quarterly Report Other investments Other Long-Term Investments Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Sales Information [Line Items] Sales information. Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash provided by operating activities Entity Incorporation, State or Country Code Diluted Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Net income PaymentsTo Acquire Certificates Of Deposits Payments To Acquire Certificates Of Deposits Purchase of certificates of deposit Equity Components [Axis] Equity Components [Axis] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Equity securities in a public company Available For Sale Security Available for sale security. Short-term investments Short-term investments Statement of Cash Flows [Abstract] Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Preferred stock, shares authorized Preferred Stock, Shares Authorized Customer deposits Increase (Decrease) in Customer Deposits Inventories Inventory, Net Inventory, Net, Total Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment, Noncurrent Property held for resale Certificate Of Deposit Certificates of deposit Certificate of deposit. Contract with Customer, Sales Channel [Axis] Work-in-process Inventory, Work in Process, Gross Document Type Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Liabilities and Stockholders' Equity Liabilities and Equity [Abstract] Operating income Operating Income (Loss) Collections on interest receivable Proceeds from Collection of Retained Interest in Securitized Receivables Inventories Inventory, Gross Securities Act File Number Inventory, Finished Goods, Gross Finished homes - Nobility manufactured Basis of Presentation and Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Retained Earnings [Member] Retained Earnings [Member] Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] Short-term Investments Investment in Debt and Equity Securities and Other Trading Assets [Text Block] Entity Registrant Name Accounting Policies [Abstract] Depreciation Depreciation Depreciation, Total Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Selling, general and administrative expenses Selling, General and Administrative Expense Selling, General and Administrative Expense, Total Entity Address, Address Line One Total current assets Assets, Current Pre-owned homes Pre Owned Homes Inventory Net Of Impairment Reserve Pre owned homes inventory net of impairment reserve. Deferred income taxes Deferred Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit), Total Entity Small Business Undistributed earnings in joint venture - Majestic 21 Undistributed earnings in joint venture - Majestic 21 Undistributed Earnings In Joint Venture Undistributed earnings in joint venture. Model home furniture Other Inventory, Gross Other Inventory, Gross, Total Accounts receivable - trade Accounts Receivable, after Allowance for Credit Loss, Current Accounts Receivable, after Allowance for Credit Loss, Current, Total Decrease (increase) in: Increase (Decrease) in Operating Assets [Abstract] Treasury Stock, Shares, Acquired Repurchased shares of common stock Purchase of treasury stock, shares Accrued compensation Increase (Decrease) in Workers' Compensation Liabilities Net income per share: Earnings Per Share [Abstract] Product and Service [Domain] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: Entity Tax Identification Number Treasury Stock, Common, Shares Treasury stock, Shares Equity Component [Domain] Equity Component [Domain] Entity Address, City or Town Income Taxes Paid, Net, Total Income Tax Paid, after Refund Received Income taxes paid Market value of equity investment Market Value Of Equity Investment Increase (decrease) in fair market value of equity investment Decrease in fair market value of equity investment Entity Common Stock, Shares Outstanding Summary of Short-term Investments Marketable Securities [Table Text Block] Cash surrender value of life insurance Cash Surrender Value of Life Insurance Statement [Table] Statement [Table] Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Accrued expenses and other current liabilities Accounts Payable and Other Accrued Liabilities, Current Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash (used in) provided by investing activities Statement [Line Items] Statement [Line Items] Investment Income, Interest Interest income Sales Information [Table] Sales information. Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Decrease in cash and cash equivalents Investments, Debt and Equity Securities [Abstract] Current assets: Assets, Current [Abstract] Stock-based compensation Stock Issued During Period Value Share Based Compensation And Adjustments To Additional Paid In Capital Share Based Compensation Requisite Service Period Recognition Value Stock issued during period value share based compensation and adjustments to additional paid in capital share based compensation requisite service period recognition value. Document Fiscal Year Focus Common Stock, shares outstanding Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding, Ending Balance Stock Issued During Period Shares, Share Based Compensation And Adjustments To Additional Paid In Capital Share Based Compensation Requisite Service Period Recognition Stock issued during period shares, share based compensation and adjustments to additional paid in capital share based compensation requisite service period recognition. Stock-based compensation, shares Treasury Stock, Value Treasury Stock, Value, Total Less treasury stock at cost, 2,211,242 and 2,111,242 shares, respectively Additional paid in capital Additional Paid in Capital, Common Stock Total net sales Net sales Revenues Revenues, Total Summary of Assets and Liabilities Measured at Fair Value Fair Value Assets And Liabilities Measured On Recurring Basis [Table Text Block] Fair Value Assets And Liabilities Measured On Recurring Basis Table Text Block Entity Address, State or Province Amendment Flag (Decrease) increase in: Increase (Decrease) in Operating Liabilities [Abstract] Debt Instrument [Axis] Miscellaneous Other Nonoperating Income (Expense) Other Nonoperating Income (Expense), Total Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Total Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period City Area Code Organization, Consolidation and Presentation of Financial Statements [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Unexercised Stock Options, Outstanding Share-based compensation arrangement by share-based payment award, unexercised stock options, outstanding. Unexercised Stock Options Outstanding , Shares Inventories Inventory Disclosure [Text Block] Common stock, par value Common Stock, Par or Stated Value Per Share Liabilities, Current Total current liabilities Accrued compensation Deferred Compensation Liability, Current Deferred Compensation Liability, Current, Total Revenues by Products and Services Segment Reporting [Text Block] Trading Symbol Entity Emerging Growth Company Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Insurance Agent Commissions [Member] Insurance agent commissions. Manufactured Housing [Member] Manufactured housing. Payments of Dividends Payments of Dividends, Total Payment of cash dividend Cover [Abstract] Share-Based Payment Arrangement, Noncash Expense Stock-based compensation Share-Based Payment Arrangement, Noncash Expense, Total Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Fair Value Disclosures [Abstract] Cash and Cash Equivalent Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value, Total Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash (used in) financing activities Schedule Of Revenue By Products And Services Table [Text Block] Schedule of revenue by products and services. Revenues by Products and Services Entity Filer Category Debt Instrument, Name [Domain] Accounts receivable - trade Increase (Decrease) in Accounts Receivable Property, plant and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Property, Plant and Equipment, Net, Total Balance, shares Balance, shares Shares, Outstanding Inventory Disclosure [Abstract] Segment Reporting [Abstract] Entity Address, Postal Zip Code Statement of Financial Position [Abstract] Local Phone Number