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Carrying Values of Intangible Assets and Goodwill (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Mar. 31, 2012
Apr. 02, 2011
Intangible Assets And Goodwill [Line Items]      
Goodwill, Gross Carrying Amount $ 14,005 $ 14,005 $ 14,005
Goodwill, Net 14,005 14,005 14,005
Gross Carrying Amount 40,759 40,843 40,828
Accumulated Amortization 13,070 12,692 11,027
Net 13,684 14,145  
Net 27,689 28,151 29,801
Trademarks
     
Intangible Assets And Goodwill [Line Items]      
Gross Carrying Amount 23,000 23,000 23,000
Accumulated Amortization 10,832 10,545 9,395
Net 12,168 12,455 13,605
Lease Rights
     
Intangible Assets And Goodwill [Line Items]      
Gross Carrying Amount 3,754 3,838 3,823
Accumulated Amortization 2,238 2,147 1,632
Net $ 1,516 $ 1,691 $ 2,191