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Summary of Final Fair Value Assigned to Net Assets Acquired (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |  |  | 0 Months Ended |  | 0 Months Ended |
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Oct. 31, 2014 | Oct. 31, 2013 | Jul. 31, 2014 | Oct. 31, 2013 Bison | Oct. 31, 2013 Bison Dealer Networks | Oct. 31, 2013 Bison Trademarks | Oct. 31, 2013 Bison Backlog | Aug. 30, 2013 Livin' Lite | Aug. 30, 2013 Livin' Lite | Aug. 30, 2013 Livin' Lite Dealer Networks | Aug. 30, 2013 Livin' Lite Trademarks | Aug. 30, 2013 Livin' Lite Backlog | Aug. 30, 2013 Livin' Lite Design Technology Assets | Aug. 30, 2013 Livin' Lite Non-Compete Agreements | May 01, 2014 K.Z. Inc. | May 01, 2014 K.Z. Inc. | May 01, 2014 K.Z. Inc. Dealer Networks | May 01, 2014 K.Z. Inc. Trademarks | May 01, 2014 K.Z. Inc. Backlog | May 01, 2014 K.Z. Inc. Non-Compete Agreements
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  |  |  |  |  |  |  |  | $ 247 |  |  |  |  |  |  | $ 996 |  |  |  |
Current assets |  |  |  | 4,050 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets |  |  |  |  |  |  |  |  | 3,626 |  |  |  |  |  |  | 34,121 |  |  |  |
Property, plant and equipment |  |  |  | 625 |  |  |  |  | 137 |  |  |  |  |  |  | 15,057 |  |  |  |
Business acquisition allocated to amortizing intangible asset |  |  |  |  | 7,400 | 1,800 | 140 |  |  | 3,200 | 1,500 | 110 | 1,100 | 130 |  |  | 13,160 | 5,540 | 420 | 450
Goodwill | 256,579 |  | 256,579 | 6,660 |  |  |  |  | 9,113 |  |  |  |  |  |  | 2,703 |  |  |  |
Current liabilities |  |  |  | (3,761) |  |  |  |  | (2,147) |  |  |  |  |  |  | (16,127) |  |  |  |
Total fair value of net assets acquired |  |  |  | 16,914 |  |  |  |  | 17,016 |  |  |  |  |  |  | 56,320 |  |  |  |
Less cash acquired |  |  |  |  |  |  |  | (247) |  |  |  |  |  |  | (996) |  |  |  |  |
Total cash consideration for acquisition, less cash acquired | $ 2,915 | $ 33,774 |  |  |  |  |  | $ 16,769 |  |  |  |  |  |  | $ 55,324 |  |  |  |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 + Details
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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