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Business Overview (Details) | 12 Months Ended
--- | ---
Sep. 30, 2016 employee location | Sep. 30, 2015
Concentration Risk [Line Items] |  |
Number of employees (employee) | employee | 1,400 |
Minimum number of locations in which entity operates (location) | location | 30 |
Human Services and Solutions | Revenue concentration | Customer concentration |  |
Concentration Risk [Line Items] |  |
Concentration risk percentage (percent) | 13.00% |
US Government | Revenue concentration | Customer concentration |  |
Concentration Risk [Line Items] |  |
Concentration risk percentage (percent) | 100.00% |
DVA | Minimum |  |
Concentration Risk [Line Items] |  |
Term of government contract | 1 year |
DVA | Maximum |  |
Concentration Risk [Line Items] |  |
Term of government contract | 4 years |
DVA | Revenue concentration | Customer concentration |  |
Concentration Risk [Line Items] |  |
Concentration risk percentage (percent) | 72.00% | 95.00%

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