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Summary of Significant Accounting Policies (Allowance for Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2010
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |  |
Balance at beginning of year | $ 246 | $ 181 | $ 465
Provision / (adjustment) | 271 | 115 | (56)
Write offs | 0 | (50) | (228)
Balance at end of year | $ 517 | $ 246 | $ 181

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- Definition Provision For Doubtful Accounts Net Of Foreign Exchange Currency Adjustment + References No definition available. + Details
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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of direct write-downs of receivables charged against the allowance for doubtful accounts. + References No definition available. + Details
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- Details
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