Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.5.0.2
Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Revenue:        
Revenue $ 617,094 $ 572,301 $ 1,780,269 $ 1,521,138
Revenue (as a percent) 100.00% 100.00% 100.00% 100.00%
Gross profit:        
Gross profit $ 151,379 $ 143,798 $ 409,261 $ 387,410
Gross profit (as a percent) 24.50% 25.10% 23.00% 25.50%
Selling, general and administrative expense:        
Selling, general and administrative expenses $ 69,706 $ 66,997 $ 199,916 $ 178,350
Selling, general, and administrative expense (as a percent) 11.30% 11.70% 11.20% 11.70%
Operating income:        
Operating income $ 84,609 $ 71,067 $ 205,295 $ 198,305
Operating income (as a percent) 13.70% 12.40% 11.50% 13.00%
Amortization of intangible assets $ (3,517) $ (3,275) $ (9,928) $ (6,182)
Acquisition-related expenses 0 (2,459) (575) (4,573)
Gain on sale of a business 6,453 0 6,453 0
Segment Reconciling Items        
Operating income:        
Amortization of intangible assets (3,517) (3,275) (9,928) (6,182)
Acquisition-related expenses 0 (2,459) (575) (4,573)
Gain on sale of a business 6,453 0 6,453 0
Other        
Selling, general and administrative expense:        
Selling, general and administrative expenses 2,127 8 2,777 108
Health Services | Operating Segments        
Revenue:        
Revenue $ 333,699 $ 298,549 $ 956,169 $ 813,037
Revenue (as a percent) 100.00% 100.00% 100.00% 100.00%
Gross profit:        
Gross profit $ 76,775 $ 69,813 $ 211,464 $ 199,533
Gross profit (as a percent) 23.00% 23.40% 22.10% 24.50%
Selling, general and administrative expense:        
Selling, general and administrative expenses $ 26,345 $ 25,343 $ 77,312 $ 75,747
Selling, general, and administrative expense (as a percent) 7.90% 8.50% 8.10% 9.30%
Operating income:        
Operating income $ 50,430 $ 44,470 $ 134,152 $ 123,786
Operating income (as a percent) 15.10% 14.90% 14.00% 15.20%
U.S. Federal Services | Operating Segments        
Revenue:        
Revenue $ 149,601 $ 141,011 $ 445,077 $ 348,205
Revenue (as a percent) 100.00% 100.00% 100.00% 100.00%
Gross profit:        
Gross profit $ 38,980 $ 34,780 $ 100,639 $ 82,362
Gross profit (as a percent) 26.10% 24.70% 22.60% 23.70%
Selling, general and administrative expense:        
Selling, general and administrative expenses $ 19,861 $ 19,244 $ 55,821 $ 43,871
Selling, general, and administrative expense (as a percent) 13.30% 13.60% 12.50% 12.60%
Operating income:        
Operating income $ 19,119 $ 15,536 $ 44,818 $ 38,491
Operating income (as a percent) 12.80% 11.00% 10.10% 11.10%
Human Services | Operating Segments        
Revenue:        
Revenue $ 133,794 $ 132,741 $ 379,023 $ 359,896
Revenue (as a percent) 100.00% 100.00% 100.00% 100.00%
Gross profit:        
Gross profit $ 35,624 $ 39,205 $ 97,158 $ 105,515
Gross profit (as a percent) 26.60% 29.50% 25.60% 29.30%
Selling, general and administrative expense:        
Selling, general and administrative expenses $ 21,373 $ 22,402 $ 64,006 $ 58,624
Selling, general, and administrative expense (as a percent) 16.00% 16.90% 16.90% 16.30%
Operating income:        
Operating income $ 14,251 $ 16,803 $ 33,152 $ 46,891
Operating income (as a percent) 10.70% 12.70% 8.70% 13.00%