3.25.4 html 341 562 1 true 106 0 false 4 false false R1.htm 000 - Document - Document And Entity Information Sheet http://www.accuray.com/20250630/role/statement-document-and-entity-information Document And Entity Information Cover 1 false false R2.htm 001 - Statement - Consolidated Balance Sheets Sheet http://www.accuray.com/20250630/role/statement-consolidated-balance-sheets Consolidated Balance Sheets Statements 2 false false R3.htm 002 - Statement - Consolidated Balance Sheets (Parentheticals) Sheet http://www.accuray.com/20250630/role/statement-consolidated-balance-sheets-parentheticals Consolidated Balance Sheets (Parentheticals) Statements 3 false false R4.htm 003 - Statement - Consolidated Statements of Operations and Comprehensive Income (Loss) Sheet http://www.accuray.com/20250630/role/statement-consolidated-statements-of-operations-and-comprehensive-income-loss Consolidated Statements of Operations and Comprehensive Income (Loss) Statements 4 false false R5.htm 004 - Statement - Consolidated Statements of Operations and Comprehensive Income (Loss) (Parentheticals) Sheet http://www.accuray.com/20250630/role/statement-consolidated-statements-of-operations-and-comprehensive-income-loss-parentheticals Consolidated Statements of Operations and Comprehensive Income (Loss) (Parentheticals) Statements 5 false false R6.htm 005 - Statement - Consolidated Statements of Stockholders' Equity Sheet http://www.accuray.com/20250630/role/statement-consolidated-statements-of-stockholders-equity Consolidated Statements of Stockholders' Equity Statements 6 false false R7.htm 006 - Statement - Consolidated Statements of Cash Flows Sheet http://www.accuray.com/20250630/role/statement-consolidated-statements-of-cash-flows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 007 - Disclosure - Note 1 - The Company and Its Significant Accounting Policies Sheet http://www.accuray.com/20250630/role/statement-note-1-the-company-and-its-significant-accounting-policies Note 1 - The Company and Its Significant Accounting Policies Notes 8 false false R9.htm 008 - Disclosure - Note 2 - Revenue Sheet http://www.accuray.com/20250630/role/statement-note-2-revenue Note 2 - Revenue Notes 9 false false R10.htm 009 - Disclosure - Note 3 - Supplemental Financial Information Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information Note 3 - Supplemental Financial Information Notes 10 false false R11.htm 010 - Disclosure - Note 4 - Leases Sheet http://www.accuray.com/20250630/role/statement-note-4-leases Note 4 - Leases Notes 11 false false R12.htm 011 - Disclosure - Note 5 - Derivative Financial Instruments Sheet http://www.accuray.com/20250630/role/statement-note-5-derivative-financial-instruments Note 5 - Derivative Financial Instruments Notes 12 false false R13.htm 012 - Disclosure - Note 6 - Fair Value Measurements Sheet http://www.accuray.com/20250630/role/statement-note-6-fair-value-measurements Note 6 - Fair Value Measurements Notes 13 false false R14.htm 013 - Disclosure - Note 7 - Debt Sheet http://www.accuray.com/20250630/role/statement-note-7-debt Note 7 - Debt Notes 14 false false R15.htm 014 - Disclosure - Note 8 - Commitments and Contingencies Sheet http://www.accuray.com/20250630/role/statement-note-8-commitments-and-contingencies Note 8 - Commitments and Contingencies Notes 15 false false R16.htm 015 - Disclosure - Note 9 - Stockholders' Equity Sheet http://www.accuray.com/20250630/role/statement-note-9-stockholders-equity Note 9 - Stockholders' Equity Notes 16 false false R17.htm 016 - Disclosure - Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan Sheet http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan Notes 17 false false R18.htm 017 - Disclosure - Note 11 - Joint Venture Sheet http://www.accuray.com/20250630/role/statement-note-11-joint-venture Note 11 - Joint Venture Notes 18 false false R19.htm 018 - Disclosure - Note 12 - Income Tax Sheet http://www.accuray.com/20250630/role/statement-note-12-income-tax Note 12 - Income Tax Notes 19 false false R20.htm 019 - Disclosure - Note 13 - Retirement Plans Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans Note 13 - Retirement Plans Notes 20 false false R21.htm 020 - Disclosure - Note 14 - Segment Disclosure Sheet http://www.accuray.com/20250630/role/statement-note-14-segment-disclosure Note 14 - Segment Disclosure Notes 21 false false R22.htm 021 - Disclosure - Note 15 - Restatement of Quarterly Financial Statements (Unaudited) Sheet http://www.accuray.com/20250630/role/statement-note-15-restatement-of-quarterly-financial-statements-unaudited Note 15 - Restatement of Quarterly Financial Statements (Unaudited) Notes 22 false false R23.htm 022 - Disclosure - Significant Accounting Policies (Policies) Sheet http://www.accuray.com/20250630/role/statement-significant-accounting-policies-policies Significant Accounting Policies (Policies) Policies http://www.accuray.com/20250630/role/statement-note-1-the-company-and-its-significant-accounting-policies 23 false false R24.htm 023 - Disclosure - Note 1 - The Company and Its Significant Accounting Policies (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-1-the-company-and-its-significant-accounting-policies-tables Note 1 - The Company and Its Significant Accounting Policies (Tables) Tables http://www.accuray.com/20250630/role/statement-note-1-the-company-and-its-significant-accounting-policies 24 false false R25.htm 024 - Disclosure - Note 2 - Revenue (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-2-revenue-tables Note 2 - Revenue (Tables) Tables http://www.accuray.com/20250630/role/statement-note-2-revenue 25 false false R26.htm 025 - Disclosure - Note 3 - Supplemental Financial Information (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-tables Note 3 - Supplemental Financial Information (Tables) Tables http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information 26 false false R27.htm 026 - Disclosure - Note 4 - Leases (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-4-leases-tables Note 4 - Leases (Tables) Tables http://www.accuray.com/20250630/role/statement-note-4-leases 27 false false R28.htm 027 - Disclosure - Note 5 - Derivative Financial Instruments (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-5-derivative-financial-instruments-tables Note 5 - Derivative Financial Instruments (Tables) Tables http://www.accuray.com/20250630/role/statement-note-5-derivative-financial-instruments 28 false false R29.htm 028 - Disclosure - Note 6 - Fair Value Measurements (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-6-fair-value-measurements-tables Note 6 - Fair Value Measurements (Tables) Tables http://www.accuray.com/20250630/role/statement-note-6-fair-value-measurements 29 false false R30.htm 029 - Disclosure - Note 7 - Debt (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-7-debt-tables Note 7 - Debt (Tables) Tables http://www.accuray.com/20250630/role/statement-note-7-debt 30 false false R31.htm 030 - Disclosure - Note 8 - Commitments and Contingencies (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-8-commitments-and-contingencies-tables Note 8 - Commitments and Contingencies (Tables) Tables http://www.accuray.com/20250630/role/statement-note-8-commitments-and-contingencies 31 false false R32.htm 031 - Disclosure - Note 9 - Stockholders' Equity (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-9-stockholders-equity-tables Note 9 - Stockholders' Equity (Tables) Tables http://www.accuray.com/20250630/role/statement-note-9-stockholders-equity 32 false false R33.htm 032 - Disclosure - Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan-tables Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan (Tables) Tables http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan 33 false false R34.htm 033 - Disclosure - Note 11 - Joint Venture (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-11-joint-venture-tables Note 11 - Joint Venture (Tables) Tables http://www.accuray.com/20250630/role/statement-note-11-joint-venture 34 false false R35.htm 034 - Disclosure - Note 12 - Income Tax (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-12-income-tax-tables Note 12 - Income Tax (Tables) Tables http://www.accuray.com/20250630/role/statement-note-12-income-tax 35 false false R36.htm 035 - Disclosure - Note 13 - Retirement Plans (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-tables Note 13 - Retirement Plans (Tables) Tables http://www.accuray.com/20250630/role/statement-note-13-retirement-plans 36 false false R37.htm 036 - Disclosure - Note 14 - Segment Disclosure (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-14-segment-disclosure-tables Note 14 - Segment Disclosure (Tables) Tables http://www.accuray.com/20250630/role/statement-note-14-segment-disclosure 37 false false R38.htm 037 - Disclosure - Note 15 - Restatement of Quarterly Financial Statements (Unaudited) (Tables) Sheet http://www.accuray.com/20250630/role/statement-note-15-restatement-of-quarterly-financial-statements-unaudited-tables Note 15 - Restatement of Quarterly Financial Statements (Unaudited) (Tables) Tables http://www.accuray.com/20250630/role/statement-note-15-restatement-of-quarterly-financial-statements-unaudited 38 false false R39.htm 038 - Disclosure - Note 1 - The Company and Its Significant Accounting Policies (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-1-the-company-and-its-significant-accounting-policies-details-textual Note 1 - The Company and Its Significant Accounting Policies (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-1-the-company-and-its-significant-accounting-policies-tables 39 false false R40.htm 039 - Disclosure - Note 1 - The Company and Its Significant Accounting Policies - Schedule of Earnings Per Share (Details) Sheet http://www.accuray.com/20250630/role/statement-note-1-the-company-and-its-significant-accounting-policies-schedule-of-earnings-per-share-details Note 1 - The Company and Its Significant Accounting Policies - Schedule of Earnings Per Share (Details) Details 40 false false R41.htm 040 - Disclosure - Note 2 - Revenue 1 (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-2-revenue-1-details-textual Note 2 - Revenue 1 (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-2-revenue-tables 41 false false R42.htm 041 - Disclosure - Note 2 - Revenue 2 (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-2-revenue-2-details-textual Note 2 - Revenue 2 (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-2-revenue-tables 42 false false R43.htm 042 - Disclosure - Note 2 - Revenue - Changes in Contract Assets and Liabilities (Details) Sheet http://www.accuray.com/20250630/role/statement-note-2-revenue-changes-in-contract-assets-and-liabilities-details Note 2 - Revenue - Changes in Contract Assets and Liabilities (Details) Details 43 false false R44.htm 044 - Disclosure - Note 2 - Revenue - Long-term Warranty and Non-cancellable Post-warranty Services 2 (Details) Sheet http://www.accuray.com/20250630/role/statement-note-2-revenue-longterm-warranty-and-noncancellable-postwarranty-services-2-details Note 2 - Revenue - Long-term Warranty and Non-cancellable Post-warranty Services 2 (Details) Details 44 false false R45.htm 045 - Disclosure - Note 2 - Revenue - Long-term Warranty and Non-cancellable Post-warranty Services (Details) (Parentheticals) Sheet http://www.accuray.com/20250630/role/statement-note-2-revenue-longterm-warranty-and-noncancellable-postwarranty-services-details-parentheticals Note 2 - Revenue - Long-term Warranty and Non-cancellable Post-warranty Services (Details) (Parentheticals) Details 45 false false R46.htm 046 - Disclosure - Note 2 - Revenue - Expenses Related to Capitalized Contract Costs (Details) Sheet http://www.accuray.com/20250630/role/statement-note-2-revenue-expenses-related-to-capitalized-contract-costs-details Note 2 - Revenue - Expenses Related to Capitalized Contract Costs (Details) Details 46 false false R47.htm 047 - Disclosure - Note 3 - Supplemental Financial Information (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-details-textual Note 3 - Supplemental Financial Information (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-tables 47 false false R48.htm 048 - Disclosure - Note 3 - Supplemental Financial Information - Financing Receivables (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-financing-receivables-details Note 3 - Supplemental Financial Information - Financing Receivables (Details) Details 48 false false R49.htm 049 - Disclosure - Note 3 - Supplemental Financial Information - Inventories, Net (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-inventories-net-details Note 3 - Supplemental Financial Information - Inventories, Net (Details) Details 49 false false R50.htm 050 - Disclosure - Note 3 - Supplemental Financial Information - Prepaid and Other Current Assets (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-prepaid-and-other-current-assets-details Note 3 - Supplemental Financial Information - Prepaid and Other Current Assets (Details) Details 50 false false R51.htm 051 - Disclosure - Note 3 - Supplemental Financial Information - Property and Equipment, Net (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-property-and-equipment-net-details Note 3 - Supplemental Financial Information - Property and Equipment, Net (Details) Details 51 false false R52.htm 052 - Disclosure - Note 3 - Supplemental Financial Information - Goodwill (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-goodwill-details Note 3 - Supplemental Financial Information - Goodwill (Details) Details 52 false false R53.htm 053 - Disclosure - Note 3 - Supplemental Financial Information - Other Assets (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-other-assets-details Note 3 - Supplemental Financial Information - Other Assets (Details) Details 53 false false R54.htm 054 - Disclosure - Note 3 - Supplemental Financial Information - Other Accrued Liabilities (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-other-accrued-liabilities-details Note 3 - Supplemental Financial Information - Other Accrued Liabilities (Details) Details 54 false false R55.htm 055 - Disclosure - Note 3 - Supplemental Financial Information - Interest Expense (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-interest-expense-details Note 3 - Supplemental Financial Information - Interest Expense (Details) Details 55 false false R56.htm 056 - Disclosure - Note 3 - Supplemental Financial Information - Other (Expense) Income, Net (Details) Sheet http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-other-expense-income-net-details Note 3 - Supplemental Financial Information - Other (Expense) Income, Net (Details) Details http://www.accuray.com/20250630/role/statement-note-3-supplemental-financial-information-tables 56 false false R57.htm 057 - Disclosure - Note 4 - Leases - Operating Lease (Details) Sheet http://www.accuray.com/20250630/role/statement-note-4-leases-operating-lease-details Note 4 - Leases - Operating Lease (Details) Details 57 false false R58.htm 058 - Disclosure - Note 4 - Leases - Operating Lease Right-of-use Assets and Operating Lease Liabilities (Details) Sheet http://www.accuray.com/20250630/role/statement-note-4-leases-operating-lease-rightofuse-assets-and-operating-lease-liabilities-details Note 4 - Leases - Operating Lease Right-of-use Assets and Operating Lease Liabilities (Details) Details 58 false false R59.htm 059 - Disclosure - Note 4 - Leases - Operating Lease Weighted-average Remaining Lease Term and Discount Rate (Details) Sheet http://www.accuray.com/20250630/role/statement-note-4-leases-operating-lease-weightedaverage-remaining-lease-term-and-discount-rate-details Note 4 - Leases - Operating Lease Weighted-average Remaining Lease Term and Discount Rate (Details) Details 59 false false R60.htm 060 - Disclosure - Note 4 - Leases - Operating Lease Liabilities Maturities (Details) Sheet http://www.accuray.com/20250630/role/statement-note-4-leases-operating-lease-liabilities-maturities-details Note 4 - Leases - Operating Lease Liabilities Maturities (Details) Details 60 false false R61.htm 061 - Disclosure - Note 5 - Derivative Financial Instruments - Outstanding Foreign Currency Forward Contracts (Details) Sheet http://www.accuray.com/20250630/role/statement-note-5-derivative-financial-instruments-outstanding-foreign-currency-forward-contracts-details Note 5 - Derivative Financial Instruments - Outstanding Foreign Currency Forward Contracts (Details) Details 61 false false R62.htm 062 - Disclosure - Note 5 - Derivative Financial Instruments - Gains and Losses, Cash Flow Hedging Arrangements (Details) Sheet http://www.accuray.com/20250630/role/statement-note-5-derivative-financial-instruments-gains-and-losses-cash-flow-hedging-arrangements-details Note 5 - Derivative Financial Instruments - Gains and Losses, Cash Flow Hedging Arrangements (Details) Details 62 false false R63.htm 063 - Disclosure - Note 6 - Fair Value Measurements (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-6-fair-value-measurements-details-textual Note 6 - Fair Value Measurements (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-6-fair-value-measurements-tables 63 false false R64.htm 064 - Disclosure - Note 6 - Fair Value Measurements - Changes in Fair Value, Penny Warrants (Details) Sheet http://www.accuray.com/20250630/role/statement-note-6-fair-value-measurements-changes-in-fair-value-penny-warrants-details Note 6 - Fair Value Measurements - Changes in Fair Value, Penny Warrants (Details) Details 64 false false R65.htm 065 - Disclosure - Note 6 - Fair Value Measurements - Carrying Value and Estimated Fair Value, 3.75% Convertible Senior Notes (Details) Notes http://www.accuray.com/20250630/role/statement-note-6-fair-value-measurements-carrying-value-and-estimated-fair-value-375-convertible-senior-notes-details Note 6 - Fair Value Measurements - Carrying Value and Estimated Fair Value, 3.75% Convertible Senior Notes (Details) Details 65 false false R66.htm 066 - Disclosure - Note 7 - Debt (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-7-debt-details-textual Note 7 - Debt (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-7-debt-tables 66 false false R67.htm 067 - Disclosure - Note 7 - Debt - Outstanding Debt (Details) Sheet http://www.accuray.com/20250630/role/statement-note-7-debt-outstanding-debt-details Note 7 - Debt - Outstanding Debt (Details) Details 67 false false R68.htm 068 - Disclosure - Note 7 - Debt - Interest Expense (Details) Sheet http://www.accuray.com/20250630/role/statement-note-7-debt-interest-expense-details Note 7 - Debt - Interest Expense (Details) Details 68 false false R69.htm 069 - Disclosure - Note 7 - Debt - Weighted Average Effective Interest Rate (Details) Sheet http://www.accuray.com/20250630/role/statement-note-7-debt-weighted-average-effective-interest-rate-details Note 7 - Debt - Weighted Average Effective Interest Rate (Details) Details 69 false false R70.htm 070 - Disclosure - Note 8 - Commitments and Contingencies (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-8-commitments-and-contingencies-details-textual Note 8 - Commitments and Contingencies (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-8-commitments-and-contingencies-tables 70 false false R71.htm 071 - Disclosure - Note 8 - Commitments and Contingencies - Schedule of Debt Maturity (Details) Sheet http://www.accuray.com/20250630/role/statement-note-8-commitments-and-contingencies-schedule-of-debt-maturity-details Note 8 - Commitments and Contingencies - Schedule of Debt Maturity (Details) Details 71 false false R72.htm 072 - Disclosure - Note 8 - Commitments and Contingencies - Royalty Expense and Royalty Payments (Details) Sheet http://www.accuray.com/20250630/role/statement-note-8-commitments-and-contingencies-royalty-expense-and-royalty-payments-details Note 8 - Commitments and Contingencies - Royalty Expense and Royalty Payments (Details) Details 72 false false R73.htm 073 - Disclosure - Note 9 - Stockholders' Equity (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-9-stockholders-equity-details-textual Note 9 - Stockholders' Equity (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-9-stockholders-equity-tables 73 false false R74.htm 074 - Disclosure - Note 9 - Stockholders' Equity - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) Sheet http://www.accuray.com/20250630/role/statement-note-9-stockholders-equity-schedule-of-accumulated-other-comprehensive-income-loss-details Note 9 - Stockholders' Equity - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) Details 74 false false R75.htm 075 - Disclosure - Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan-details-textual Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan-tables 75 false false R76.htm 076 - Disclosure - Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Schedule of Share-based Compensation Charges (Details) Sheet http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan-schedule-of-sharebased-compensation-charges-details Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Schedule of Share-based Compensation Charges (Details) Details 76 false false R77.htm 077 - Disclosure - Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Option Activity (Details) Sheet http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan-option-activity-details Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Option Activity (Details) Details 77 false false R78.htm 078 - Disclosure - Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Outstanding and Exercisable Options (Details) Sheet http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan-outstanding-and-exercisable-options-details Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Outstanding and Exercisable Options (Details) Details 78 false false R79.htm 079 - Disclosure - Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Other Award Activity (Details) Sheet http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan-other-award-activity-details Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Other Award Activity (Details) Details 79 false false R80.htm 080 - Disclosure - Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Employee Stock Purchase Plan Valuation Assumptions (Details) Sheet http://www.accuray.com/20250630/role/statement-note-10-stock-incentive-plans-and-employee-stock-purchase-plan-employee-stock-purchase-plan-valuation-assumptions-details Note 10 - Stock Incentive Plans and Employee Stock Purchase Plan - Employee Stock Purchase Plan Valuation Assumptions (Details) Details 80 false false R81.htm 081 - Disclosure - Note 11 - Joint Venture (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-11-joint-venture-details-textual Note 11 - Joint Venture (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-11-joint-venture-tables 81 false false R82.htm 082 - Disclosure - Note 11 - Joint Venture - Summarized Financial Information (Details) Sheet http://www.accuray.com/20250630/role/statement-note-11-joint-venture-summarized-financial-information-details Note 11 - Joint Venture - Summarized Financial Information (Details) Details 82 false false R83.htm 083 - Disclosure - Note 12 - Income Tax (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-12-income-tax-details-textual Note 12 - Income Tax (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-12-income-tax-tables 83 false false R84.htm 084 - Disclosure - Note 12 - Income Taxes - Schedule of Income Before Income Taxes (Details) Sheet http://www.accuray.com/20250630/role/statement-note-12-income-taxes-schedule-of-income-before-income-taxes-details Note 12 - Income Taxes - Schedule of Income Before Income Taxes (Details) Details 84 false false R85.htm 085 - Disclosure - Note 12 - Income Taxes - Provision for Income Taxes (Details) Sheet http://www.accuray.com/20250630/role/statement-note-12-income-taxes-provision-for-income-taxes-details Note 12 - Income Taxes - Provision for Income Taxes (Details) Details 85 false false R86.htm 086 - Disclosure - Note 12 - Income Taxes - Income Tax Reconciliation (Details) Sheet http://www.accuray.com/20250630/role/statement-note-12-income-taxes-income-tax-reconciliation-details Note 12 - Income Taxes - Income Tax Reconciliation (Details) Details 86 false false R87.htm 087 - Disclosure - Note 12 - Income Taxes - Deferred Tax Assets (Liabilities) (Details) Sheet http://www.accuray.com/20250630/role/statement-note-12-income-taxes-deferred-tax-assets-liabilities-details Note 12 - Income Taxes - Deferred Tax Assets (Liabilities) (Details) Details 87 false false R88.htm 088 - Disclosure - Note 12 - Income Taxes - Schedule of Unrecognized Tax Benefits (Details) Sheet http://www.accuray.com/20250630/role/statement-note-12-income-taxes-schedule-of-unrecognized-tax-benefits-details Note 12 - Income Taxes - Schedule of Unrecognized Tax Benefits (Details) Details 88 false false R89.htm 089 - Disclosure - Note 13 - Retirement Plans (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-details-textual Note 13 - Retirement Plans (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-tables 89 false false R90.htm 090 - Disclosure - Note 13 - Retirement Plans - Funded Status of Defined Benefit Pension Plan (Details) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-funded-status-of-defined-benefit-pension-plan-details Note 13 - Retirement Plans - Funded Status of Defined Benefit Pension Plan (Details) Details 90 false false R91.htm 091 - Disclosure - Note 13 - Retirement Plans - Benefit Plan Amounts Recognized in Accumulated Other Comprehensive Loss (Details) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-benefit-plan-amounts-recognized-in-accumulated-other-comprehensive-loss-details Note 13 - Retirement Plans - Benefit Plan Amounts Recognized in Accumulated Other Comprehensive Loss (Details) Details 91 false false R92.htm 092 - Disclosure - Note 13 - Retirement Plans - Schedule of Projected Benefit Obligation (Details) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-schedule-of-projected-benefit-obligation-details Note 13 - Retirement Plans - Schedule of Projected Benefit Obligation (Details) Details 92 false false R93.htm 093 - Disclosure - Note 13 - Retirement Plans - Schedule of Net Periodic Benefit Cost (Details) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-schedule-of-net-periodic-benefit-cost-details Note 13 - Retirement Plans - Schedule of Net Periodic Benefit Cost (Details) Details 93 false false R94.htm 094 - Disclosure - Note 13 - Retirement Plans - Amounts to be Recognized in Accumulated Other Comprehensive Loss (Details) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-amounts-to-be-recognized-in-accumulated-other-comprehensive-loss-details Note 13 - Retirement Plans - Amounts to be Recognized in Accumulated Other Comprehensive Loss (Details) Details 94 false false R95.htm 095 - Disclosure - Note 13 - Retirement Plans - Assumptions Used in Net Periodic Benefit Cost and Obligation (Details) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-assumptions-used-in-net-periodic-benefit-cost-and-obligation-details Note 13 - Retirement Plans - Assumptions Used in Net Periodic Benefit Cost and Obligation (Details) Details 95 false false R96.htm 096 - Disclosure - Note 13 - Retirement Plans - Estimated Future Benefit Payments (Details) Sheet http://www.accuray.com/20250630/role/statement-note-13-retirement-plans-estimated-future-benefit-payments-details Note 13 - Retirement Plans - Estimated Future Benefit Payments (Details) Details 96 false false R97.htm 097 - Disclosure - Note 14 - Segment Disclosure (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-14-segment-disclosure-details-textual Note 14 - Segment Disclosure (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-14-segment-disclosure-tables 97 false false R98.htm 098 - Disclosure - Note 14 - Segment Disclosure - Revenue by Geographic Area (Details) Sheet http://www.accuray.com/20250630/role/statement-note-14-segment-disclosure-revenue-by-geographic-area-details Note 14 - Segment Disclosure - Revenue by Geographic Area (Details) Details 98 false false R99.htm 099 - Disclosure - Note 14 - Segment Disclosure - Concentration of Segment Revenues (Details) Sheet http://www.accuray.com/20250630/role/statement-note-14-segment-disclosure-concentration-of-segment-revenues-details Note 14 - Segment Disclosure - Concentration of Segment Revenues (Details) Details 99 false false R100.htm 100 - Disclosure - Note 14 - Segment Disclosure - Long-lived Assets by Geographic Area (Details) Sheet http://www.accuray.com/20250630/role/statement-note-14-segment-disclosure-longlived-assets-by-geographic-area-details Note 14 - Segment Disclosure - Long-lived Assets by Geographic Area (Details) Details 100 false false R101.htm 101 - Disclosure - Note 15 - Restatement of Quarterly Financial Statements (Unaudited) 1 (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-15-restatement-of-quarterly-financial-statements-unaudited-1-details-textual Note 15 - Restatement of Quarterly Financial Statements (Unaudited) 1 (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-15-restatement-of-quarterly-financial-statements-unaudited-tables 101 false false R102.htm 102 - Disclosure - Note 15 - Restatement of Quarterly Financial Statements (Unaudited) 2 (Details Textual) Sheet http://www.accuray.com/20250630/role/statement-note-15-restatement-of-quarterly-financial-statements-unaudited-2-details-textual Note 15 - Restatement of Quarterly Financial Statements (Unaudited) 2 (Details Textual) Details http://www.accuray.com/20250630/role/statement-note-15-restatement-of-quarterly-financial-statements-unaudited-tables 102 false false R103.htm 104 - Disclosure - Note 15 - Long-term Warranty and Non-cancellable Post-warranty Services 2 (Details) Sheet http://www.accuray.com/20250630/role/statement-note-15-longterm-warranty-and-noncancellable-postwarranty-services-2-details Note 15 - Long-term Warranty and Non-cancellable Post-warranty Services 2 (Details) Details 103 false false R104.htm 105 - Disclosure - Note 15 - Long-term Warranty and Non-cancellable Post-warranty Services (Details) (Parentheticals) Sheet http://www.accuray.com/20250630/role/statement-note-15-longterm-warranty-and-noncancellable-postwarranty-services-details-parentheticals Note 15 - Long-term Warranty and Non-cancellable Post-warranty Services (Details) (Parentheticals) Details 104 false false All Reports Book All Reports aray-20250630.xsd aray-20250630_cal.xml aray-20250630_def.xml aray-20250630_lab.xml aray-20250630_pre.xml aray20260630_10ka.htm http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 true true