Inventories

Inventories consist of the following (in thousands):



	October 30, 2011		April 30, 2011

Raw materials	$	47,993	$	64,997
Work-in-process	97,020		66,073
Finished goods	69,927		56,547
Total inventories	$	214,940	$	187,617

During the three and six months ended October 30, 2011, the Company recorded charges of $5.7 million and $11.4 million, respectively, for excess and obsolete inventory, and sold inventory that was written-off in previous periods with an approximate cost of $3.0 million and $7.0 million, respectively. This resulted in a net charge for excess and obsolete inventory of $2.7 million and $4.4 million, respectively, during the three and six months ended October 30, 2011.

During the three and six months ended October 31, 2010, the Company recorded charges of $2.8 million and $6.6 million, respectively, for excess and obsolete inventory, and sold inventory that was written-off in previous periods with an approximate cost of $2.8 million and $6.4 million, respectively. This resulted in a net charge for excess and obsolete inventory of $200,000 during the six months ended October 31, 2010.

The Company enters into agreements with subcontractors that allow them to procure inventory on behalf of the Company to fulfill subcontractor obligations. The Company records a liability for noncancelable purchase commitments with these subcontractors for quantities in excess of its future demand forecasts. As of October 30, 2011 and April 30, 2011, the liability for these purchase commitments was $2.1 million and $3.2 million, respectively, and was recorded on the balance sheet as other accrued liabilities.