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Income taxes (Details) - USD ($) | 3 Months Ended
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Jun. 24, 2016 | Jun. 26, 2015
Income Tax Disclosure [Abstract] |  |
Unrecognized tax benefits | $ 0 | $ 0

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- References No definition available. + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 + Details
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