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Long-Term Debt - Additional Information (Detail) (USD $) | 9 Months Ended |
--- | --- | ---
Jun. 30, 2013 | Oct. 31, 2011
Debt Instrument [Line Items] |  |
Interest rate | 1.00% |
Promissory note payable period | 2013-11 |
Imputed interest rate used to discount | 2.00% |
Revolving loan |  |
Debt Instrument [Line Items] |  |
Credit agreement, maximum borrowing amount |  | $ 30,000,000
Period of credit agreement | 5 years |
Revolving loan | Minimum |  |
Debt Instrument [Line Items] |  |
Interest rate on revolving loan, percentage added to Libor | 0.75% |
Commitment fee | 0.10% |
Revolving loan | Maximum |  |
Debt Instrument [Line Items] |  |
Interest rate on revolving loan, percentage added to Libor | 1.75% |
Commitment fee | 0.25% |
Credit Agreement Amendment |  |
Debt Instrument [Line Items] |  |
Credit agreement, maximum borrowing amount |  | 40,000,000
Percentage of stock of non-U.S. subsidiaries pledged | 65.00% |
Term loan |  |
Debt Instrument [Line Items] |  |
Credit agreement, increase in maximum borrowing amount | 10,000,000 |
Period of credit agreement | 5 years |
Quarterly installments payment | $ 500,000 |
Quarterly installments payment starting date | Dec. 01, 2011 |
Libor-based variable interest rate of term loan | 2.20% |
Effective fixed rate on term loan | 2.90% |

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- Definition Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format. + References Reference 1: 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 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 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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