Subsequent Event	3 Months Ended
Subsequent Event	Sep. 30, 2011
Subsequent Events [Abstract]
Subsequent Event	12. Subsequent Event The Company suspended production in all of its Thailand manufacturing facilities during the week of October 10, 2011 due to severe flooding in Thailand, and the flood waters have since inundated these facilities and submerged equipment located there. The flooded facilities in Thailand include the Company’s magnetic head slider fabrication facilities, which supply a substantial majority of the Company’s magnetic head requirements. The flooded facilities in Thailand also include the Company’s hard drive, head gimbal assembly (“HGA”) and head stack assembly (“HSA”) facilities. Approximately 60% of the hard drives produced by the Company in the quarter ended September 30, 2011 came from its Thailand facilities. In addition to the suspension of the Company’s Thailand hard drive assembly operations and the internal slider shortages, the Company is also experiencing other shortages of component parts from vendors located in several Thailand industrial parks that have been flooded or have been affected by protective plant shutdowns. The Company is evaluating the Thailand situation on an ongoing basis and does not know, at this time, when it will recommence operations in Thailand, including the operation of its Thailand slider fabrication facility that also supports operations outside of Thailand. The Company is also uncertain about the timeline for recovery and recommencement of production by suppliers in Thailand. The Company is pursuing its options so that it can safely begin working to accelerate the water removal and either extract and transfer equipment to clean rooms in another location or prepare the equipment for operation on-site. The Company expects the suspension of its operations in Thailand and that of some of its suppliers will continue into the March quarter and possibly beyond. During this time, the Company’s operations outside Thailand will be impacted by a shortage of sliders that would otherwise be produced by the Company in Thailand and other shortages of components produced by some of its suppliers impacted by the floods. The Company is working with its suppliers to better understand the effect of the flooding on the supply chain and to locate alternative sources of supply, and is also pursuing all options to maximize existing capacity in other locations, including its Malaysian hard drive assembly facility and a third-party slider fabrication facility in the Philippines. The flooding of the Company’s Thailand facilities, combined with the flood damage to the supply chain in Thailand, will have a significant impact on the Company’s overall operations and its ability to meet customer demand for its products in the December quarter and possibly beyond. While the Company expects industry unit demand in the December quarter will be flat to slightly down from the September quarter, it expects that its hard drive shipments during the December quarter will be between 22 million and 26 million units in contrast to the 58 million units shipped in the September quarter and that the overall hard drive industry unit shipments in the December quarter will also be supply constrained due to the flooding. In addition, while the Company’s operations in Thailand remain suspended completely or in part, its costs will be impacted negatively by significant under-absorption of its assets and infrastructure, costs it will incur in restoring supply and increased costs of use of air freight and other charges to expedite the immediate availability of the Company’s production for its customers. The Company also expects to incur significant unusual charges and expenses related to the flooding of its operations, including such items as fixed asset impairments, inventory write-downs, purchase order cancellations for excess materials that cannot be used near term, service charges for reclaim and recovery work and foreign exchange losses to settle a portion of its forward exchange contracts that exceed its current requirements. The Company is unable to estimate the amount of these charges and expenses at this time. Given the lower expected product shipments, the Company anticipates its net revenue in the December quarter will be substantially lower than the quarter ended September 30, 2011. In addition, while the Company believes that supply constraint, relative to demand, will result in a higher average selling price (“ASP”) for the December quarter, the Company expects that the higher costs referenced above will result in negative gross margins and that it will incur a significant loss for the quarter before taking into account unusual charges and expenses the Company expects to incur related to the flooding. The Company’s revenues, gross margins and operating results will continue to be negatively impacted in subsequent quarters until the Company and its supply sources affected by the Thailand flooding are able to substantially restore operations, the supply chain infrastructure is re-established and the Company is able to regain any lost market share. The Company maintains insurance coverage that provides for reimbursement from losses resulting from flood damage. The Company anticipates the amount of flood damage incurred will exceed the policy’s limit but cannot estimate by how much at this time. The Company also maintains insurance for business interruption losses, and is currently working with its insurance carrier to determine the amounts which may be recoverable under this policy.