Revenue Recognition (Tables)

12 Months Ended

Sep. 30, 2025

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Table 4.1: Revenue by Service Type
	For the Year Ended September 30,
	2025		%		2024		%		2023		%
	(dollars in thousands)
Program Operations	$	2,650,764	48.8	%	$	2,570,494	48.4	%	$	2,500,678	51.0	%
Clinical Services	2,100,943		38.7	%	1,891,292		35.6	%	1,486,040		30.3	%
Employment & Other	354,835		6.5	%	469,304		8.8	%	520,981		10.6	%
Technology Solutions	324,734		6.0	%	375,107		7.1	%	397,029		8.1	%
Total revenue	$	5,431,276			$	5,306,197			$	4,904,728

Table 4.2: Revenue by Contract Type
	For the Year Ended September 30,
	2025		%		2024		%		2023		%
	(dollars in thousands)
Performance-based	$	2,954,395	54.4	%	$	2,939,536	55.4	%	$	2,425,597	49.5	%
Cost-plus	1,316,646		24.2	%	1,247,202		23.5	%	1,238,574		25.3	%
Fixed price	712,878		13.1	%	686,555		12.9	%	717,167		14.6	%
Time and materials	447,357		8.2	%	432,904		8.2	%	523,390		10.7	%
Total revenue	$	5,431,276			$	5,306,197			$	4,904,728

Table 4.3: Revenue by Customer Type
	For the Year Ended September 30,
	2025		%		2024		%		2023		%
	(dollars in thousands)
New York state government agencies	$	610,755	11.2	%	$	647,349	12.2	%	$	525,051	10.7	%
Other U.S. state government agencies	1,153,928		21.2	%	1,255,181		23.7	%	1,275,763		26.0	%
Total U.S. state government agencies	1,764,683				1,902,530				1,800,814
U.S. federal government agencies	2,995,821		55.2	%	2,674,014		50.4	%	2,344,863		47.8	%
International government agencies	590,798		10.9	%	642,222		12.1	%	663,044		13.5	%
Other, including local municipalities and commercial customers	79,974		1.5	%	87,431		1.6	%	96,007		2.0	%
Total revenue	$	5,431,276			$	5,306,197			$	4,904,728

Table 4.4: Effect of Changes in Contract Estimates
	For the Year Ended September 30,
	2025		2024		2023
	(in thousands, except per share data)
Increase in/(reduction of) revenue recognized due to changes in contract estimates	$	11,424	$	(12,617)	$	(13,346)
Increase in/(reduction of) diluted earnings per share recognized due to changes in contract estimates	$	0.15	$	(0.15)	$	(0.16)