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New Accounting Pronouncements - Additional Information (Detail) - USD ($) |  | 12 Months Ended
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Oct. 02, 2015 | Sep. 30, 2016
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |
Increase in deferred tax assets and retained earnings |  | $ 5,197,000
New Accounting Pronouncement, Early Adoption, Effect [Member] | Accounting Standards Update 2016-09 [Member] |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |
Increase in deferred tax assets and retained earnings | $ 5,200,000 |
Income tax benefit |  | $ 257,000

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- Definition Noncash adjustment to retained earnings and deferred tax assets to adopt accounting standard update. + References No definition available. + Details
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- Definition Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 740 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79981250&loc=d3e23524-113945 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 + Details
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