Operating Loss Carryforwards Annual Limitation Amount

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- Definition

Operating Loss Carryforwards Expiration Date One

+ References

No definition available.

+ Details

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- Definition

Operating Loss Carryforwards Subject To Limitations

+ References

No definition available.

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- Definition

Tax Credit Carryforward Expiration Date One

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Article 9

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph b(1)

-Article 7

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Carryforwards

-URI http://asc.fasb.org/extlink&oid=6506874

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- Definition

Amount of interest expense accrued for an underpayment of income taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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Income taxes - Additional Information (Detail)					12 Months Ended					12 Months Ended
Income taxes - Additional Information (Detail)	Mar. 29, 2014 USD ($)	Mar. 30, 2013 USD ($)	Mar. 31, 2012 USD ($)	Mar. 29, 2014 Alternative Minimum Tax Credit [Member] USD ($)	Mar. 29, 2014 Foreign Tax Authority [Member] USD ($)	Mar. 29, 2014 State and Local Jurisdiction [Member] USD ($)	Mar. 29, 2014 Foreign Country Section Three Eight Two Limitation [Member] USD ($)	Mar. 29, 2014 Domestic Tax Authority [Member] USD ($)	Mar. 29, 2014 Domestic Tax Authority [Member] CAD	Mar. 29, 2014 Domestic Tax Authority [Member] Investment Tax Credit Carryforward [Member] USD ($)	Mar. 29, 2014 Domestic Tax Authority [Member] Investment Tax Credit Carryforward [Member] CAD
Tax Credit Carryforward [Line Items]
Accrued interest related to uncertain tax positions	$ 0
Non cash valuation allowance	56,809,000	56,607,000
Federal tax payable	18,000	5,800	5,800
Federal non capital losses					106,400,000	98,300,000		21,200,000	23,500,000
Investment tax credits				1,000,000						235,000	260,000
Expire date										Between 2022 and 2032	Between 2022 and 2032
Pre-acquisition net operating loss							35,300,000
Pre-acquisition net operating loss limited							$ 953,000
Federal net operating loss carry forwards expiration Dates					Beginning in fiscal 2020 through fiscal 2033	Beginning in fiscal 2018 through fiscal 2033