Commitments and Contingencies - Additional Information (Detail) (USD $)	Mar. 30, 2013
Credit Agreement
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	$ 32,753,000
Guarantee Payment Of Insurance Claims
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	50,946,000
Current Investments
Commitments and Contingencies Disclosure [Line Items]
Investments providing collateral for letters of credit to guarantee insurance claims	48,974,000
Non-Current Investments
Commitments and Contingencies Disclosure [Line Items]
Investments providing collateral for letters of credit to guarantee insurance claims	7,633,000
Total non-current investments	$ 53,657,000