Financial Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Apr. 01, 2012
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and cash equivalents		$ 10,001
Investments in marketable securities	5,243	4,654
Derivative assets	1,285	1,432
Derivative liabilities	662	1,496
Contingent consideration liabilities	41,503	9,018
Quoted Prices In Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and cash equivalents		10,001
Investments in marketable securities	5,243	4,654
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative assets	1,285	1,432
Derivative liabilities	662	1,496
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Contingent consideration liabilities	$ 41,503	$ 9,018