Summary of Significant Accounting Policies and Concentrations of Risk (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Apr. 02, 2011
Estimated net realizable value of inventories
Raw materials	$ 11,707	$ 15,465
Work-in-process	164,438	214,023
Finished goods	28,721	35,257
Total inventories	$ 204,866	$ 264,745

Carrying amount as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

+ References

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- Definition

Carrying amount as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process. Also includes purchased parts that will be used as components of a finished product.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Carrying amount as of the balance sheet date of merchandise or goods which are partially completed, are generally comprised of raw materials, labor and factory overhead costs, and which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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