Annual report pursuant to Section 13 and 15(d)

Commitments and contingencies (Details)

v2.4.0.8
Commitments and contingencies (Details) (USD $)
 3 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Mar. 31, 2009
Medicaid Agency
Sep. 30, 2012
School MAX Customers
More than
Sep. 30, 2012
Flexible New Deal contract
Sep. 30, 2011
Flexible New Deal contract
Sep. 30, 2012
Contract
Sep. 30, 2011
Contract
Sep. 30, 2013
Contract
Sep. 30, 2013
PSI
Loss contract
Apr. 30, 2012
PSI
Loss contract
Commitments and Contingencies                                        
Amount of claim                       $ 2,300,000 $ 10,000,000              
Deferred revenue recorded 32,953,000       34,075,000       32,953,000 34,075,000                   15,100,000
Additional revenue recognized from significant contract 384,339,000 334,323,000 326,351,000 286,266,000 300,737,000 266,353,000 243,452,000 239,603,000 1,331,279,000 1,050,145,000 929,633,000               16,000,000  
Additional cost recognized for significant contract                 945,246,000 762,202,000 675,982,000               5,100,000  
Operating profit                 186,208,000 127,575,000 122,401,000               10,900,000  
Reserve recorded to cover the liabilities                             500,000          
Claim received for revenue foregone                           2,700,000            
Cost recoveries, net of subcontractor expenses                           1,700,000            
Charge (gain) on a fixed price contract                               (6,800,000) 7,300,000      
Liability relating to anticipated losses                                   0    
Additional revenue recognized from significant contract                               $ 10,200,000        
Percentage of employees covered by collective bargaining agreements                 12.00%