Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts and Other Receivables, Net, Current Accounts receivable and other receivables Total Accounts Payable, Current Accounts payable Accounts Payable [Member] Accounts Payable [Member] Accounts Payable, Related Parties, Current Accounts payable to related parties Accounts Payable, Related Parties, Noncurrent Advances payable to related party Accounts Receivable Due Period Accounts Receivable Due Period Accounts receivable periods Accounts Receivable Payment Terms Accounts Receivable Payment Terms Payment period of term loan Accounts Receivables [Line Items] Accounts Receivables [Line Items] Accounts Receivables [Line Items] Accounts Receivables [Table] Accounts Receivables [Table] Accounts Receivables [Table] Accrued Income Taxes, Current Current tax payable Accrued Liabilities, Current Accrued liabilities Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Gross fixed assets write down Accumulated depreciation and impairment charges Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Member] Additional Charges Of Obsolescence Reserve For Inventory Additional Charges Of Obsolescence Reserve For Inventory Additional charges Additional Paid in Capital, Common Stock Additional paid-in capital Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Compensation expense resulting from stock options and stock appreciation rights granted to Management Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Advertising And Marketing Expenses Policy Policy Text Block. Advertising And Marketing Expenses Policy [Policy Text Block] Advertising and marketing costs Allocated Share-based Compensation Expense Compensation expense Other Segments [Member] Other Segments [Member] Allowance for Credit Losses on Financing Receivables [Table Text Block] Schedule of Continuity of Allowance for Doubtful Accounts Allowance for Doubtful Accounts Receivable Ending balance Beginning balance Allowance For Doubtful Accounts Receivable Additional Provision Allowance For Doubtful Accounts Receivable Additional Provision Additional provision recorded Allowance for Doubtful Accounts Receivable, Write-offs Net write-offs Amended Birks Employee Stock Option Plan [Member] Amended Birks Employee Stock Option Plan [Member] Amended Birks Employee Stock Option Plan [Member] Amendment Flag Amendment Flag Amortization of Debt Issuance Costs and Discounts Amortization of debt costs Annual compensation. Annual Compensation Annual compensation Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Outstanding Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Asset Impairment Charges Asset impairment charges Asset Impairment Policy Text Block. Asset Impairment [Policy Text Block] Impairment of long-lived assets Assets Total assets Assets, Current Total current assets Assets, Current [Abstract] Current assets: Assets Held under Capital Leases [Member] Assets Held under Capital Leases [Member] Assets, Noncurrent Total non-current assets Disposal Group, Including Discontinued Operation, Assets Total assets Disposal Group, Including Discontinued Operation, Assets [Abstract] Assets Disposal Group, Including Discontinued Operation, Assets, Current Assets of disposal group Total current assets Disposal Group, Including Discontinued Operation, Assets, Current [Abstract] Current assets: Award Type [Axis] Award Type [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Birks Brand [Member] Birks Brand [Member] Birks Brand [Member] Birks Stock Option Plan [Member] Birks Stock Option Plan [Member] Birks Stock Option Plan [Member] Brinkhaus Brand [Member] Brinkhaus Brand [Member] Brinkhaus Brand [Member] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Capital Leased Assets, Gross Capital lease asset Capital lease net annual rental payment. Capital Lease Net Annual Rental Payment Annual rent rate Capital Lease Obligations Capital lease obligation Obligations under capital leases Capital Lease Obligations [Member] Capital Lease Obligations [Member] Capital Leases, Balance Sheet, Assets by Major Class, Net Property and plant under capital lease arrangement, net book value Capital leases expiration period. Capital Leases Expiration Period Lease period Capital Leases, Future Minimum Payments Due Total minimum lease payments Capital Leases, Future Minimum Payments Due, Next Twelve Months 2019 Capital Leases, Future Minimum Payments Due in Five Years 2023 Capital Leases, Future Minimum Payments Due in Four Years 2022 Capital Leases, Future Minimum Payments Due in Three Years 2021 Capital Leases, Future Minimum Payments Due in Two Years 2020 Capital Leases, Future Minimum Payments Due Thereafter Thereafter Capital Leases, Future Minimum Payments, Interest Included in Payments Less imputed interest Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments Total Capital Leases of Lessor, Contingent Rentals, Basis Spread on Variable Rate Annual rate of prime plus Capital Loss Carryforward [Member] Capital Loss Carryforward [Member] Carlo coda nunziante. Carlo Coda Nunziante [Member] Carlo Coda Nunziante [Member] Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of year Cash and cash equivalents, beginning of year Cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net decrease in cash and cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Cash and cash equivalents Cash Contribution [Member] Cash Contribution [Member] Cash Contribution [Member] Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash transactions: Cash Provided by (Used in) Financing Activities, Discontinued Operations Net cash used in financing activities from discontinued operations Cash Provided by (Used in) Investing Activities, Discontinued Operations Net cash (used in) provided by investing activities from discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash (used in) provided by operating activities from discontinued operations Cash Received From Credit Card Issuers. Cash Received From Credit Card Issuers Amounts receivable from credit card issuers Class of Stock [Domain] Class of Stock [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Class Of Warrant Extended Term Period Class Of Warrant Extended Term Period Period of warranties Class of Warrant or Right, Outstanding Outstanding warrants Class Of Warrants Or Rights Expiration Date Class Of Warrants Or Rights Expiration Date Warrant expiry date Commitments and Contingencies Commitments and Contingencies Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments Disclosure [Text Block] Commitments Commodity And Currency Risk Policy Text Block. Commodity And Currency Risk [Policy Text Block] Commodity and currency risk Common Class A [Member] Class A Common Stock [Member] Common Class B [Member] Class B Common Stock [Member] Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Ending Balance, Shares Beginning Balance, Shares Common stock, shares outstanding Common Stock Shares Outstanding [Member] Common Stock Shares Outstanding [Member] Voting Common Stock Outstanding [Member] Common Stock, Value, Issued Balance as of ending balance Balance as of beginning balance Common stock Common stock voting rights vote per share. Common Stock Voting Rights Vote Per Share Common stock voting rights per share Common Stock Voting Shares [Member] Common Stock Voting Shares [Member] Common Stock Voting Shares [Member] Components of Deferred Tax Assets [Abstract] Deferred tax assets: Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total other comprehensive income Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Other comprehensive income (loss): Computer Equipment [Member] Software and Electronic Equipment [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Cooperative Advertising Amount Reimbursement of advertising cost Cost Of Goods Sold [Member] Cost Of Goods Sold [Member] Cost of Goods Sold [Member] Cost of Revenue Cost of sales Cost of Sales, Policy [Policy Text Block] Cost of sales Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Credit Receivable Percentage Credit Receivable Percentage Consumer credit receivable charges Crystal Financial LLC. Crystal Financial LLC [Member] Crystal Financial LLC [Member] Current Fiscal Year End Date Current Fiscal Year End Date Current Income Tax Expense (Benefit) Current Dealer agreement term. Dealer Agreement Term Dealer agreement term Debt and Capital Lease Obligations Long-term debt and Capital lease obligations Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] Bank indebtedness Debt Instrument, Basis Spread on Variable Rate Long-term debt interest rate Debt Instrument, Covenant Description Debt instrument, covenant description Debt instrument covenant fixed charge coverage ratio. Debt Instrument Covenant Fixed Charge Coverage Ratio Fixed charge coverage ratio Debt Instrument, Description of Variable Rate Basis Interest rate description Debt Instrument, Fee Amount Transaction amount Debt Instrument, Interest Rate During Period Annual interest rate Debt Instrument, Interest Rate, Effective Percentage Effective interest rate Debt Instrument, Interest Rate, Stated Percentage Debt Instrument Interest Rate Stated Percentage Rate Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument, Maturity Date New credit facility maturity date Debt Instrument Monthly Payment Debt Instrument Monthly Payment Capital repayments Debt Instrument, Payment Terms Payable description Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt, Weighted Average Interest Rate Weighted average interest rate for the year Deductions Of Obsolescence Reserve For Inventory Deductions Of Obsolescence Reserve For Inventory Deductions Deferred Charges, Policy [Policy Text Block] Deferred financing costs Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent Share based compensation recognized liability Deferred Income Tax Expense (Benefit) Deferred Deferred operating lease liability. Deferred Operating Lease Liability Deferred operating lease liabilities Deferred Other Tax Expense (Benefit) Valuation allowance Deferred Stock Units Dsu [Member] Deferred Stock Units Dsu [Member] Deferred Stock Units Dsu [Member] Deferred Tax Assets Expenses Not Currently Deductible Deferred Tax Assets Expenses Not Currently Deductible Expenses not currently deductible Deferred Tax Assets, Gross Net deferred tax asset before valuation allowance Deferred Tax Assets Liabilities Other Deferred Tax Assets Liabilities Other Other Deferred Tax Assets, Net of Valuation Allowance Net deferred tax asset Deferred Tax Assets Operating Loss And Tax Credits Carryforwards Deferred Tax Assets Operating Loss And Tax Credits Carryforwards Loss and tax credit carry forwards Deferred Tax Assets, Property, Plant and Equipment Difference between book and tax basis of property and equipment Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other Other reserves not currently deductible Deferred Tax Assets, Valuation Allowance Non cash valuation allowance Valuation allowance Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation, Depletion and Amortization Depreciation and amortization Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Benefit plans and stock-based compensation Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Gain on disposal, net of taxes of nil Gain on disposal of discontinued operations, net of tax Gain on disposal, net of taxes Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax (Loss) income from discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax (Loss) income from discontinued operations, net of tax (Loss) income from discontinued operations, net of taxes Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share Basic Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Diluted Discontinued Operation Percentage Of Interest Sold Discontinued Operation Percentage Of Interest Sold Disposal group equity interests sold Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Discontinued Operation, Tax Effect of Income (Loss) from Discontinued Operation During Phase-out Period Income taxes (benefits) Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Accounts receivable Disposal Group, Including Discontinued Operation, Accounts Payable Accounts payable Disposal Group, Including Discontinued Operation, Accounts Payable, Current Accounts payable Disposal Group, Including Discontinued Operation, Accrued Liabilities Accrued expenses Disposal Group, Including Discontinued Operation, Accrued Liabilities, Current Accrued liabilities Disposal Group, Including Discontinued Operation, Assets, Noncurrent Assets of disposal group Total non-currentassets Disposal Group, Including Discontinued Operation, Cash Cash Disposal Group, Including Discontinued Operation, Classified Balance Sheet Disclosures [Abstract] Disposal Group, Including Discontinued Operation, Classified Balance Sheet Disclosures [Abstract] Disposal Group, Including Discontinued Operation, Consideration Cash proceeds on disposal Sale total consideration Disposal Group, Including Discontinued Operation, Costs of Goods Sold Cost of sales Disposal group including discontinued operation debt extinguishment charges. Disposal Group Including Discontinued Operation Debt Extinguishment Charges Debt extinguishment charges Disposal Group, Including Discontinued Operation, Deferred Tax Assets, Noncurrent Deferred income tax asset Deferred income taxes Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities, Noncurrent Long-term debt Disposal Group, Including Discontinued Operation, Depreciation and Amortization Depreciation and amortization Disposal Group, Including Discontinued Operation, Gross Profit (Loss) Gross profit Disposal group including discontinued operation indebtedness net. Disposal Group Including Discontinued Operation Indebtedness Net Bank indebtedness Disposal Group, Including Discontinued Operation, Intangible Assets, Noncurrent Intangible assets Disposal group including discontinued operation interest and other financial costs. Disposal group including discontinued operation interest and other financial costs Interest and other financial costs Disposal Group, Including Discontinued Operation, Inventory, Current Inventory purchased Inventories Inventory Disposal group including discontinued operation legal and professional fees. Disposal Group Including Discontinued Operation Legal and Professional Fees Legal and professional fees Legal and professional fees incurred as a result of the Aurum Transaction Disposal group including discontinued operation long term debt. Disposal Group Including Discontinued Operation Long Term Debt Long-term debt Disposal Group, Including Discontinued Operation, Operating Expense Total operating expenses Disposal Group, Including Discontinued Operation, Operating Income (Loss) Operating income Disposal Group, Including Discontinued Operation, Other Liabilities, Current Current portion of long-term debt Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent Other assets Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent Other long-term liabilities Other long-term liabilities Disposal Group, Including Discontinued Operation, Prepaid and Other Assets Prepaid expenses Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current Prepaids and other current assets Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Noncurrent Property and equipment Disposal group including discontinued operation reserve on inventory obsolescence. Disposal Group Including Discontinued Operation Reserve on Inventory Obsolescence Discontinued operations for obsolescence reserve on inventory Disposal Group, Including Discontinued Operation, Revenue Net sales Disposal group including discontinued operation selling general and administrative expenses. Disposal Group Including Discontinued Operation Selling General And Administrative Expenses Selling, general and administrative expenses Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Discontinued operations and disposal group Disposal Group Name [Domain] Disposal Group Name [Domain] Document and entity information. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus