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Credit Facility - Additional Information (Detail) (USD $) | 9 Months Ended |  |  | 9 Months Ended |  | 3 Months Ended | 9 Months Ended |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2014 | Jul. 31, 2013 | Oct. 31, 2013 | Feb. 17, 2012 | Jul. 31, 2014 Minimum | Jul. 31, 2014 Maximum | Jul. 31, 2014 Revolver | Oct. 31, 2013 Revolver | Jul. 31, 2014 Term Loan | Jul. 31, 2014 Term Loan | Jul. 31, 2014 Coverity Inc | Apr. 30, 2014 Coverity Inc | Jul. 31, 2014 Revolver | Apr. 30, 2014 Revolver
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior unsecured revolving credit facility entered date | Feb. 17, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  |  |  | $ 350,000,000 |  |  |  |  |  |  |  | $ 7,000,000 |  |
Senior unsecured term loan facility, face amount |  |  |  |  | 150,000,000 |  |  |  |  |  |  |  |  |  |
Payment schedule for term loan | Principal payments on a portion of the Term Loan are due in equal quarterly installments of $7.5 million, with the remainder due when the Credit Agreement expires in October 2016. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior unsecured term loan facility additional borrowings | 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument quarterly principal payment | 7,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from credit facility | 200,000,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  | 200,000,000
Principal payments made during period | 223,239,000 | 22,975,000 |  |  |  |  |  |  |  | 7,500,000 |  |  |  | 200,000,000 |
Senior unsecured term loan facility | 82,500,000 |  | 105,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Senior unsecured term loan facility long term | 52,500,000 |  | 75,000,000 | [1] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  |  |  |  | 0.975% |  |  | 1.125% |  |  |  |
Commitment fees percentage |  |  |  |  |  | 0.15% | 0.30% |  |  |  |  |  |  |  |
Original credit facility expiration date |  |  |  |  |  |  |  |  |  |  |  | Dec. 31, 2014 |  |  |
[1] | Derived from audited financial statements.

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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