Annual report pursuant to Section 13 and 15(d)

Commitments and contingencies (Details)

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Commitments and contingencies (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended
Sep. 30, 2012
Mar. 31, 2009
Medicaid Agency
Apr. 30, 2012
School MAX Customers
More than
Sep. 30, 2012
Flexible New Deal contract
Sep. 30, 2011
Flexible New Deal contract
Sep. 30, 2012
Contracts
Sep. 30, 2011
Contracts
Commitments and Contingencies              
Amount of claim   $ 2.3 $ 10.0        
Reserve recorded to cover the liabilities         0.5    
Claim received for revenue foregone       2.7      
Cost recoveries, net of subcontractor expenses       1.7      
Charge on a fixed price contract           6.8 7.3
Additional revenue recognized from significant contract           $ 10.2  
Collective bargaining agreements              
Percentage of employees covered by collective bargaining agreements 15.00%