Document and entity information [abstract]. Document And Entity Information [Abstract] Statement [Table] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Common Stock, Shares Outstanding Consolidated Balance Sheets [Abstract] Assets [Abstract] Assets Cash and Cash Equivalents, at Carrying Value Cash at end of period Cash at beginning of period Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value, Total Accounts Receivable, Net, Current Accounts receivable, net of contractual allowances of approximately $187,059,000 and $188,513,000 at February 29, 2012 and August 31, 2011, respectively Accounts Receivable, Net, Current, Total Inventory, Net Inventories Inventory, Net, Total Trading Securities, Current Trading securities Trading Securities, Current, Total Interest Receivable, Current Interest receivable Prepaid Expense, Current Prepaid expenses Prepaid Expense, Current, Total Income Taxes Receivable, Current Income tax receivable Assets of Disposal Group, Including Discontinued Operation, Current Assets of discontinued operations Assets of Disposal Group, Including Discontinued Operation, Current, Total Assets, Current Total current assets Available-for-sale Securities, Noncurrent Investments available-for-sale Available-for-sale Securities, Noncurrent, Total Real Estate Investment Property, Net Investment in real estate, net Real Estate Investment Property, Net, Total Property, Plant and Equipment, Net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Property and equipment, net Property, Plant and Equipment, Net, Total Income Taxes Receivable, Noncurrent Income tax receivable Deferred Tax Assets, Net, Noncurrent Deferred tax asset Deferred Tax Assets, Net, Noncurrent, Total Other Assets, Noncurrent Other assets Other Assets, Noncurrent, Total Assets Total assets Total assets Liabilities and Equity [Abstract] Liabilities and stockholders' equity Accounts Payable, Current Accounts payable Accounts Payable, Current, Total Accrued Liabilities, Current Accrued liabilities Accrued Liabilities, Current, Total Notes Payable, Current Current portion of notes payable Notes Payable, Current, Total Capital Lease Obligations, Current Current portion of capital lease obligations Liabilities of Disposal Group, Including Discontinued Operation, Current Liabilities of discontinued operations Liabilities of Disposal Group, Including Discontinued Operation, Current, Total Liabilities, Current Total current liabilities Liabilities, Noncurrent [Abstract] Non-current liabilities: Notes Payable, Noncurrent Long-term portion of notes payable Notes Payable, Noncurrent, Total Capital Lease Obligations, Noncurrent Long-term portion of capital lease obligations Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity: Preferred Stock, Value, Issued Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued, Beginning Balance Preferred stock, $.01 par value; 5,000,000 shares authorized, none issued or outstanding Preferred Stock, Value, Issued, Total Common Stock, Value, Issued Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common stock, $.001 par value; 100,000,000 shares authorized, 14,543,626 and 14,426,960 shares issued at February 29, 2012 and August 31, 2011 Common Stock, Value, Issued, Total Additional Paid in Capital Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional paid-in capital Additional Paid in Capital, Total Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained earnings Retained Earnings (Accumulated Deficit), Total Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent, Beginning Balance Total Dynacq stockholders' equity Total Dynacq stockholders' equity Stockholders' Equity Attributable to Noncontrolling Interest Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance Non-controlling interest Stockholders' Equity Attributable to Noncontrolling Interest, Total Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance Total equity Liabilities and Equity Total liabilities and equity Allowance for Doubtful Accounts Receivable, Current Allowance for Doubtful Accounts Receivable, Current, Ending Balance Allowance for Doubtful Accounts Receivable, Current, Beginning Balance Contractual allowances for accounts receivable Preferred Stock, Par or Stated Value Per Share Preferred stock, par value Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Issued, Total Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding, Ending Balance Preferred Stock, Shares Outstanding, Beginning Balance Preferred stock, shares outstanding Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, issued Common Stock, Shares, Issued, Total Consolidated Statements Of Operations [Abstract] Net patient service revenue Costs and Expenses [Abstract] Costs and expenses: Compensation and Benefits Compensation and benefits Labor and Related Expense, Total Health Care Organization, Medical Supplies and Drugs Expense Medical services and supplies Other Cost and Expense, Operating Other operating expenses Other Cost and Expense, Operating, Total Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction, Total Depreciation and amortization Operating Costs and Expenses Total costs and expenses Total costs and expenses Operating Income (Loss) Operating loss Operating loss Nonoperating Income (Expense) [Abstract] Other income (expense): Rent and other income (expense). Rent And Other Income Expense Rent and other income Interest Income (Expense), Net Interest income Interest Income (Expense), Net, Total Interest Expense Interest expense Interest expense Interest Expense, Total Other Nonoperating Income (Expense) Total other income, net Total other income, net Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Loss before income taxes from continuing operations Loss before income taxes from continuing operations Income Tax Expense (Benefit) Benefit for income taxes Benefit for income taxes Income Tax Expense (Benefit), Total Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Loss from continuing operations Loss from continuing operations Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Discontinued operations, net of income taxes Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent, Total Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax 0 Loss on disposal of discontinued operations, net of income taxes Loss on disposal of discontinued operations, net of income taxes Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Total Loss on disposal of discontinued operations, net of income taxes Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Net Income (Loss) Attributable to Noncontrolling Interest Less: Net loss attributable to noncontrolling interest Noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest, Total Net Income (Loss) Attributable to Parent Net loss Net loss Net loss attributable to Dynacq Healthcare, Inc. Net loss attributable to Dynacq Healthcare, Inc. Net Loss Per Share [Abstract] Basic and diluted loss per common share: Income (Loss) from Continuing Operations, Per Basic and Diluted Share Loss from continuing operations attributable to Dynacq Healthcare, Inc. Income (Loss) from Discontinued Operations, Net of Tax, Per Basic and Diluted Share Discontinued operations, net of income taxes Discontinued operations, net of income taxes Gain loss on disposal of discontinued operation net of tax per basic and diluted share. Gain Loss on Disposal of Discontinued Operation Net of Tax Per Basic and Diluted Share Loss on disposal of discontinued operations, net of income taxes Earnings Per Share, Basic and Diluted Net loss attributable to Dynacq Healthcare, Inc. Weighted average number of share outstanding basic and diluted. Weighted Average Number of Share Outstanding Basic and Diluted Basic and diluted average common shares outstanding Income Amounts Attributable to Parent, Disclosures [Abstract] Amounts attributable to Dynacq Healthcare, Inc.: Income (Loss) from Continuing Operations Attributable to Parent Income Net loss before discontinued operations Loss from continuing operations Net loss before discontinued operations Net loss before discontinued operations Consolidated Statements Of Cash Flows [Abstract] Cash flows from operating activities Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Less loss from discontinued operations, net of income taxes Less loss from discontinued operations, net of income taxes Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total Adjustments to reconcile net loss before discontinued operations to net cash used in operating activities: Adjustments to reconcile net loss before discontinued operations to net cash used in operating activities: Trading Securities, Realized Gain (Loss) Loss on trading securities Gain on sale of trading securities Trading Securities, Realized Gain (Loss), Total Deferred Income Tax Expense (Benefit) Deferred income taxes Deferred Income Tax Expense (Benefit), Total Charge for Stock Options to Employees Charge for stock options to employees Charge for stock options to employees Share-based Compensation, Total Charge for stock options to employees Charge for non-controlling interest sale and issuance of stock awards. Charge for Non-Controlling Interest Sale and Issuance of Stock Awards Charge for non-controlling interest sale and issuance of stock awards Foreign Currency Transaction Gain (Loss), Unrealized Foreign currency exchange losses (gains) Foreign currency exchange (gains) losses Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Accounts receivable Increase (Decrease) in Interest and Dividends Receivable Interest receivable Interest receivable Increase (Decrease) in Interest and Dividends Receivable, Total Increase (Decrease) in Inventories Inventories Inventories Increase (Decrease) in Inventories, Total Increase (Decrease) in Prepaid Expense Prepaid expenses Prepaid expenses Increase (Decrease) in Income Taxes Receivable Income taxes receivable Income taxes receivable Increase (Decrease) in Other Operating Assets Other assets Other assets Increase (Decrease) in Other Operating Assets, Total Increase (Decrease) in Accounts Payable Accounts payable Accounts payable Increase (Decrease) in Accounts Payable, Total Increase (Decrease) in Accrued Liabilities Accrued liabilities Accrued liabilities Increase (Decrease) in Accrued Liabilities, Total Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash provided by (used in) continuing activities Cash used in continuing activities Cash Provided by (Used in) Operating Activities, Discontinued Operations Cash used in discontinued activities Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Cash flows from investing activities Payments to Acquire Marketable Securities Purchase of trading securities Purchase of trading securities Payments to Acquire Marketable Securities, Total Proceeds from Sale and Maturity of Marketable Securities Sales proceeds of trading securities Proceeds from Sale and Maturity of Marketable Securities, Total Payments to Acquire Machinery and Equipment Purchase of equipment Purchase of equipment Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash used in continuing activities Cash used in continuing activities Cash Provided by (Used in) Investing Activities, Discontinued Operations Cash used in discontinued activities 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 Proceeds from Notes Payable Proceeds from notes payable Proceeds from Notes Payable, Total Repayments of Notes Payable Principal payments on notes payable Principal payments on notes payable Principal payments on notes payable Repayments of Long-term Capital Lease Obligations Payments on capital lease Payments on capital lease Proceeds from (Payments to) Noncontrolling Interests, Total Contributions from, and distributions to, noncontrolling interest, net Proceeds from (Payments to) Noncontrolling Interests, Total Net Cash Provided by (Used in) Financing Activities, Continuing Operations Cash provided by continuing activities Cash provided by (used in) continuing activities Cash Provided by (Used in) Financing Activities, Discontinued Operations Cash used in discontinued activities Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Effect of Exchange Rate on Cash and Cash Equivalents Effect of exchange rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents, Total Cash and Cash Equivalents, Period Increase (Decrease) Net decrease in cash and cash equivalents Net decrease in cash and cash equivalents Supplemental Cash Flow Information [Abstract] Supplemental cash flow disclosures Interest Paid Interest Interest Paid, Total Income Taxes Paid, Net Income taxes Income Taxes Paid, Net, Total Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non cash investing and financing activities: Investments available-for-sale, non cash. Investments Available-For-Sale, Non Cash Investments available-for-sale Accumulated other comprehensive income, non cash. Accumulated Other Comprehensive Income, Non Cash Accumulated other comprehensive income Deferred tax liabilities, non cash. Deferred Tax Liabilities, Non Cash Deferred tax liabilities Equipment from capital lease (discontinued operations), non cash. Equipment from Capital Lease (Discontinued Operations), Non Cash Equipment from capital lease (discontinued operations) Capital Lease Obligations Incurred Capital lease obligation (discontinued operations) General [Abstract] Business Description and Basis of Presentation [Text Block] General Basis Of Presentation [Abstract] Basis of Presentation and Significant Accounting Policies [Text Block] Basis Of Presentation Reorganization of Segments and Reclassification. Reorganization Of Segments And Reclassification [Abstract] Reorganization of segments and reclassification. Reorganization of Segments and Reclassification [Text Block] Reorganization Of Segments And Reclassification Cash And Cash Equivalents [Abstract] Cash and Cash Equivalents Disclosure [Text Block] Cash And Cash Equivalents Investments In Available-For-Sale And Trading Securities [Abstract] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Investments In Available-For-Sale And Trading Securities Investment in real estate and notes payable. Investment In Real Estate And Notes Payable [Abstract] Investment in real estates and notes payable. Investment in Real Estates and Notes Payable [Text Block] Investment In Real Estate And Notes Payable Inventories [Abstract] Inventory Disclosure [Text Block] Inventories Use of estimates. Use Of Estimates [Abstract] Usage of estimates. Usage of Estimates [Text Block] Use Of Estimates Discontinued Operations [Abstract] Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Discontinued Operations Earnings Per Share [Text Block] Net Loss Per Share Stock Based Compensation [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock Based Compensation Fair Value Of Financial Instruments [Abstract] Fair Value Disclosures [Text Block] Fair Value Of Financial Instruments Foreign Currency Translation [Abstract] Foreign Currency Disclosure [Text Block] Foreign Currency Translation Revenue Recognition [Abstract] Revenue recognition. Revenue Recognition [TextBlock] Revenue Recognition Noncontrolling Interest [Abstract] Noncontrolling interest. Noncontrolling Interest [Text Block] Noncontrolling Interest Comprehensive Loss And Accumulated Other Comprehensive Income [Abstract] Comprehensive Income (Loss) Note [Text Block] Comprehensive Loss And Accumulated Other Comprehensive Income Contingencies [Abstract] Commitments and Contingencies Disclosure [Text Block] Contingencies Industry Segments And Geographic Information [Abstract] Segment Reporting Disclosure [Text Block] Industry Segments And Geographic Information