Discontinued Operations Assets and Liabilities Held for Sale (Detail) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable, net	$ 4,562	$ 6,906
Inventories	14,334	20,604
Prepaid expenses	321	341
Current Assets of Businesses Held for Sale	19,217	27,851
Net property, plant and equipment	14,880	17,673
Intangibles, net	3,779	5,873
Deferred income tax benefits	1,223	(147)
Other assets	1,423	1,518
Non-Current Assets of Businesses Held for Sale	21,305	24,917
Accounts payable	2,602	6,715
Accrued liabilities	11,578	10,391
Current Liabilities of Businesses Held for Sale	14,180	17,106
Deferred income tax liabilities	319	194
Other liabilities	503	2,215
Non-Current Liabilities of Businesses Held for Sale	822	2,409
Net Assets of Businesses Held for Sale	25,520	33,253
Avionics & Controls
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable, net	4,341	5,360
Inventories	11,954	14,763
Prepaid expenses	82	156
Current Assets of Businesses Held for Sale	16,377	20,279
Net property, plant and equipment	5,417	5,474
Intangibles, net	0	945
Deferred income tax benefits	(147)	(147)
Other assets	0	0
Non-Current Assets of Businesses Held for Sale	5,270	6,272
Accounts payable	765	1,878
Accrued liabilities	8,006	8,340
Current Liabilities of Businesses Held for Sale	8,771	10,218
Deferred income tax liabilities	0	0
Other liabilities	503	2,215
Non-Current Liabilities of Businesses Held for Sale	503	2,215
Net Assets of Businesses Held for Sale	12,373	14,118
Sensors & Systems
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable, net	0	0
Inventories	0	0
Prepaid expenses	0	0
Current Assets of Businesses Held for Sale	0	0
Net property, plant and equipment	0	0
Intangibles, net	0	0
Deferred income tax benefits	0	0
Other assets	0	0
Non-Current Assets of Businesses Held for Sale	0	0
Accounts payable	0	0
Accrued liabilities	0	0
Current Liabilities of Businesses Held for Sale	0	0
Deferred income tax liabilities	0	0
Other liabilities	0	0
Non-Current Liabilities of Businesses Held for Sale	0	0
Net Assets of Businesses Held for Sale	0	0
Advanced Materials
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable, net	221	1,546
Inventories	2,380	5,841
Prepaid expenses	239	185
Current Assets of Businesses Held for Sale	2,840	7,572
Net property, plant and equipment	9,463	12,199
Intangibles, net	3,779	4,928
Deferred income tax benefits	1,370	0
Other assets	1,423	1,518
Non-Current Assets of Businesses Held for Sale	16,035	18,645
Accounts payable	1,837	4,837
Accrued liabilities	3,572	2,051
Current Liabilities of Businesses Held for Sale	5,409	6,888
Deferred income tax liabilities	319	194
Other liabilities	0	0
Non-Current Liabilities of Businesses Held for Sale	319	194
Net Assets of Businesses Held for Sale	$ 13,147	$ 19,135