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Summary of Significant Accounting Policies (Concentrations of Credit Risk) (Details) - Customer |  | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Accounts Receivable |  |  |
Concentration Risk [Line Items] |  |  |
Number of customers |  |  | 2
Accounts Receivable | Customer One |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage |  | 10.00% | 14.00%
Accounts Receivable | Customer Two |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage |  |  | 10.00%
UNITED STATES | Cash, cash equivalents and restricted cash |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 62.00% |  |

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611 + Details
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