Lease Financing Obligations - Future Minimum Lease and Sublease Income Payments for Lease Financing Obligations (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Apr. 01, 2012
Lease Financing Obligations [Line Items]
2013 (6 months remaining)	$ 2,498
2014	3,479
2015	1,347
2016	10
Thereafter	16
Total minimum lease payments	7,350
Less: amount representing interest	(327)
Present value of minimum lease payments	7,023
Less: short-term lease financing obligations	(3,340)	(3,216)
Long-term lease financing obligations	$ 3,683	$ 3,771

Capital Leases Future Minimum Payments Due In Five Years And Thereafter

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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