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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 1 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended
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Dec. 20, 2011 | Nov. 30, 2011 | Mar. 31, 2012 | Apr. 02, 2011 | Apr. 03, 2010 | Jun. 30, 2012 Stock Options | Mar. 31, 2012 Stock Options | Mar. 31, 2012 Stock Options Minimum | Mar. 31, 2012 Stock Options Maximum | Jun. 30, 2012 Performance Based Stock Options [Member] | Jun. 30, 2012 Foreign Exchange Forward Not Designated as Hedging Instrument | Mar. 31, 2012 Foreign Exchange Forward Not Designated as Hedging Instrument | Jun. 30, 2012 Foreign Exchange Forward Cost of Sales Not Designated as Hedging Instrument | Mar. 31, 2012 Foreign Exchange Forward Cost of Sales Not Designated as Hedging Instrument | Apr. 02, 2011 Foreign Exchange Forward Cost of Sales Not Designated as Hedging Instrument | Apr. 03, 2010 Foreign Exchange Forward Cost of Sales Not Designated as Hedging Instrument | Jun. 30, 2012 Trademarks | Mar. 31, 2012 Trademarks | Mar. 31, 2012 Equipment, Furniture and Fixtures, and Computer Hardware and Software | Mar. 31, 2012 In-Store Shops | Mar. 31, 2012 Software Development
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advertising expense |  |  | $ 31.4 | $ 27.4 | $ 22.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cooperative advertising Expenses |  |  | 4.3 | 3.9 | 3.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shipping and handling costs |  |  | 19.7 | 12.4 | 8.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years | 3 years | 5 years
Intangible asset, useful life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 years | 20 years |  |  |
Share-based compensation, fair value assumption, expected holding period |  |  |  |  |  |  |  | 4 years 6 months | 9 years 6 months |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation, service period requirement |  |  |  |  |  |  |  | 9 years | 10 years |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation, vesting period |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation, contractual term |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation, holding period |  |  |  |  |  |  |  | 4 years 6 months | 4 years 9 months |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on forward contracts |  |  |  |  |  |  |  |  |  |  |  |  | 0.8 | 2.6 | (2.5) | (1.0) |  |  |  |  |
Forward contracts term, maximum |  |  |  |  |  |  |  |  |  |  | 18 months | 18 months |  |  |  |  |  |  |  |  |
Notional amount of forward contract |  |  |  |  |  |  |  |  |  |  | 94.4 | 51.2 |  |  |  |  |  |  |  |  |
Deferred finance cost |  |  | 2.4 | 0.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated amortization of deferred finance cost |  |  | $ 1.3 | $ 0.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share split ratio | 3.8 | 3.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Anti-dilutive securities excluded from computation of earning per share |  |  |  |  |  | 105,755 | 343,787 |  |  | 1,044,000 |  |  |  |  |  |  |  |  |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 13, 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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