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Restructuring and Divestiture Net Charges - Additional Information (Detail) (USD $)
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3 Months Ended | 6 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | |||||||
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Mar. 30, 2013
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Mar. 24, 2012
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Mar. 30, 2013
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Mar. 24, 2012
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Dec. 29, 2012
Indiana [Member ]
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Sep. 29, 2012
Indiana [Member ]
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Mar. 24, 2012
Abandonment of Adiana Product Line [Member]
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Sep. 29, 2012
Abandonment of Adiana Product Line [Member]
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Mar. 30, 2013
Consolidation of Diagnostics Operations [Member]
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Sep. 29, 2012
Consolidation of Diagnostics Operations [Member]
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Sep. 29, 2012
Consolidation of Diagnostics Operations [Member]
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Mar. 30, 2013
Consolidation of Diagnostics Operations [Member]
Restructuring [Member]
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Dec. 29, 2012
Consolidation of Diagnostics Operations [Member]
Restructuring [Member]
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Mar. 30, 2013
Consolidation of Diagnostics Operations [Member]
Restructuring [Member]
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Sep. 29, 2012
Closure of Indianapolis Facility [Member]
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Mar. 30, 2013
Closure of Indianapolis Facility [Member]
Restructuring [Member]
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Mar. 30, 2013
Closure of Indianapolis Facility [Member]
Restructuring [Member]
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Mar. 30, 2013
Consolidation of Selenium Panel Coating Production [Member]
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Mar. 30, 2013
Consolidation of Selenium Panel Coating Production [Member]
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| Restructuring Cost and Reserve [Line Items] | |||||||||||||||||||
| Divestiture charges | $ 18,300,000 | $ 19,500,000 | |||||||||||||||||
| Restructuring charges - cost of product sales | 19,100,000 | ||||||||||||||||||
| Other restructuring charges | 400,000 | ||||||||||||||||||
| Impairment charges related to inventory | 9,900,000 | ||||||||||||||||||
| Impairment charges related to manufacturing equipment | 6,500,000 | ||||||||||||||||||
| Charges related to outstanding contractual obligations | 2,700,000 | ||||||||||||||||||
| Severance Charges | 100,000 | 13,300,000 | 900,000 | 800,000 | 900,000 | 1,500,000 | 3,000,000 | 600,000 | |||||||||||
| Restructuring charges not recorded in cost of product sales | 300,000 | ||||||||||||||||||
| Stock-based compensation expense | 19,013,000 | 8,949,000 | 31,079,000 | 17,606,000 | 3,500,000 | 200,000 | |||||||||||||
| Employee retention program, payments in cash | 9,700,000 | ||||||||||||||||||
| Estimated aggregate severance charges | 6,100,000 | 6,100,000 | |||||||||||||||||
| Exiting charges | 700,000 | 900,000 | 600,000 | 1,000,000 | 2,000,000 | ||||||||||||||
| Estimated severance charges | 1,000,000 | ||||||||||||||||||
| Lease obligation charge and write-off of related leaseholds | 200,000 | ||||||||||||||||||
| Gain on the sale of LIFECODES business | $ 900,000 | $ 900,000 | |||||||||||||||||