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Income taxes (Tables) | 12 Months Ended
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Mar. 30, 2013
Income Tax Disclosure [Abstract] |
Summary of Net Deferred Tax Assets | The significant items comprising the Company’s net deferred tax assets at March 30, 2013 and March 31, 2012 are as follows:
|  | Fiscal Year Ended |
|  | March 30, 2013 |  |  | March 31, 2012 |
|  | (In thousands) |
Deferred tax assets: |  |  |  |  |  |  |  |
Loss and tax credit carry forwards |  | $ | 41,776 |  |  | $ | 41,018 |
Difference between book and tax basis of property and equipment |  |  | 2,746 |  |  |  | 4,015 |
Interest expense limitations carry forward |  |  | 6,292 |  |  |  | 5,127 |
Inventory allowances |  |  | 759 |  |  |  | 834 |
Other reserves not currently deductible |  |  | 874 |  |  |  | 1,080 |
Capital lease obligation |  |  | 3,617 |  |  |  | 3,759 |
Expenses not currently deductible |  |  | 439 |  |  |  | 1,276 |
Other |  |  | 104 |  |  |  | 134 |
Net deferred tax asset before valuation allowance |  |  | 56,607 |  |  |  | 57,243 |
Valuation allowance |  |  | (56,607 | ) |  |  | (57,243 | )
Net deferred tax asset |  | $ | — |  |  | $ | — |
Reconciliation of Unrecognized Tax Benefits | The following table reconciles the unrecognized tax benefits at March 30, 2013 and March 31, 2012:
|  | Fiscal Year Ended |
|  | March 30, 2013 |  |  | March 31, 2012 |
|  | (In thousands) |
Unrecognized tax benefits at the beginning of the year |  | $ | — |  |  | $ | — |
Gross increase – tax position in current period |  |  | 299 |  |  |  | 332 |
Applied against certain element of deferred tax assets |  |  | (299 | ) |  |  | (332 | )
Unrecognized tax benefits at the end of the year |  | $ | — |  |  | $ | — |
Components of Income Tax Expense (Benefit) | The Company’s income tax expense (benefit) consists of the following components:
|  | Fiscal Year Ended |
|  | March 30, 2013 |  |  | March 31, 2012 |  |  | March 26, 2011 |
|  | (In thousands) |
Income tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | 299 |  |  | $ | 332 |  |  | $ | 444 |
Deferred |  |  | 393 |  |  |  | (820 | ) |  |  | (4,789 | )
Valuation allowance |  |  | (672 | ) |  |  | 511 |  |  |  | 4,369 |
Income tax expense |  | $ | 20 |  |  | $ | 23 |  |  | $ | 24 |
Schedule of Effective Income Tax Rate Reconciliation | The Company’s provision for income taxes varies from the amount computed by applying the statutory income tax rates for the reasons summarized below:
|  | Fiscal Year Ended |
|  | March 30, 2013 |  |  | March 31, 2012 |  |  | March 26, 2011 |
Canadian statutory rate |  |  | 26.2 | % |  |  | 27.5 | % |  |  | 29.3 | %
Rate differential for U.S. operations |  |  | (7.3 | )% |  |  | (139.1 | )% |  |  | 13.9 | %
Adjustment to valuation allowance |  |  | 21.0 | % |  |  | 493.9 | % |  |  | (62.4 | )%
Utilization of unrecognized losses and other tax attributes |  |  | (45.3 | )% |  |  | (395.5 | )% |  |  | 17.8 | %
Permanent differences and other |  |  | 6.7 | % |  |  | 22.7 | % |  |  | 1.1 | %
Total |  |  | 1.3 | % |  |  | 9.5 | % |  |  | (0.3 | )%

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=21917533&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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