Summary of Significant Accounting Policies (Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2014 |
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| Allowance for Doubtful Accounts Receivable [Roll Forward] | |||
| Balance at beginning of year | $ 5,009 | $ 2,846 | $ 638 |
| Provision / (Reversal) | 1,698 | (194) | 1,304 |
| Write offs | (1,942) | (130) | (13) |
| Acquired through business acquisitions | 0 | 1,397 | 0 |
| Adjustment | (1,035) | 1,090 | 917 |
| Balance at end of year | $ 3,730 | $ 5,009 | $ 2,846 |
| X | ||||||||||
- Definition Allowance for Doubtful Accounts Receivable, Acquired Through Business Acquisitions No definition available.
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- Definition Provision For Doubtful Accounts Net Of Foreign Exchange Currency Adjustment No definition available.
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| X | ||||||||||
- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in the allowance for doubtful accounts. No definition available.
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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