Revenue Recognition (Tables)

9 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

By operating segment and service

	Three Months Ended June 30,				Nine Months Ended June 30,
(dollars in thousands)	2020		2019		2020		2019
Program administration	$	251,616	$	212,638	$	724,960	$	651,343
Assessments and appeals	40,875		35,657		104,621		106,209
Workforce and children services	32,531		29,146		90,651		76,947
Other	11,928		13,691		37,697		41,583
Total U.S. Health and Human Services	$	336,950	$	291,132	$	957,929	$	876,082
Program administration	$	362,973	$	204,622	$	949,071	$	554,739
Technology solutions	42,101		39,994		130,172		116,870
Assessments and appeals	45,069		47,679		130,862		127,409
Total U.S. Federal Services	$	450,143	$	292,295	$	1,210,105	$	799,018
Workforce and children services	$	55,046	$	65,819	$	146,968	$	208,856
Assessments and appeals	42,468		62,152		167,397		192,233
Program administration	15,544		16,767		49,583		48,009
Other	1,186		2,545		5,719		7,651
Total Outside the U.S.	$	114,244	$	147,283	$	369,667	$	456,749
Total revenue	$	901,337	$	730,710	$	2,537,701	$	2,131,849

By contract type

	Three Months Ended June 30,				Nine Months Ended June 30,
(dollars in thousands)	2020		2019		2020		2019
Performance-based	$	295,650	$	260,052	$	864,077	$	834,531
Cost-plus	422,641		282,795		1,184,425		756,227
Fixed price	132,535		142,940		352,255		429,962
Time and materials	50,511		44,923		136,944		111,129
Total revenue	$	901,337	$	730,710	$	2,537,701	$	2,131,849

By customer type

	Three Months Ended June 30,				Nine Months Ended June 30,
(dollars in thousands)	2020		2019		2020		2019
New York State government agencies	$	79,140	$	90,295	$	276,585	$	271,865
Other U.S. state government agencies	265,608		204,272		692,689		601,044
Total U.S. state government agencies	344,748		294,567		969,274		872,909
United States Federal Government agencies	429,031		276,294		1,155,773		745,195
International government agencies	107,353		136,848		345,629		425,921
Other, including local municipalities and commercial customers	20,205		23,001		67,025		87,824
Total revenue	$	901,337	$	730,710	$	2,537,701	$	2,131,849

By geography

	Three Months Ended June 30,				Nine Months Ended June 30,
(dollars in thousands)	2020		2019		2020		2019
United States of America	$	787,092	$	583,428	$	2,168,033	$	1,675,101
United Kingdom	53,364		72,265		190,088		224,017
Australia	38,415		48,744		100,390		153,114
Rest of world	22,466		26,273		79,190		79,617
Total revenue	$	901,337	$	730,710	$	2,537,701	$	2,131,849

Deferred Contract Cost

	Three Months Ended June 30,				Nine Months Ended June 30,
(dollars in thousands)	2020		2019		2020		2019
Deferred contract cost capitalization	$	2,268	$	4,738	$	6,263	$	12,950
Deferred contract cost amortization	1,369		1,843		4,866		4,663