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Revenue recognition (Tables)

12 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

By operating segment and service

						Year ended September 30,
(in thousands)						2020						2019
Program administration						1,008,591						883,772
Assessments and appeals						141,446						136,109
Workforce and children services						127,595						100,454
Other						51,642						56,153
Total U.S. Services						1,329,274						1,176,488
Program administration						1,288,741						779,573
Technology solutions						169,259						160,342
Assessments and appeals						175,337						171,282
Total U.S. Federal Services						1,633,337						1,111,197
Workforce and children services						206,657						272,801
Assessments and appeals						218,704						252,447
Program administration						66,002						63,734
Other						7,563						10,148
Total Outside the U.S.						498,926						599,130
Total revenue						3,461,537						2,886,815

By contract type

						Year ended September 30,
(in thousands)						2020						2019
Performance-based						$	1,109,153					$	1,193,075
Cost-plus						$	1,578,912					$	1,088,541
Fixed price						$	471,505					$	441,146
Time and materials						$	301,967					$	164,053
Total revenue						$	3,461,537					$	2,886,815

By customer type

						Year ended September 30,
(in thousands)						2020						2019
New York State government agencies						$	355,282					$	362,724
Other U.S. state government agencies						988,945						804,213
Total U.S. state government agencies						1,344,227						1,166,937
United States Federal Government agencies						1,559,165						1,040,980
International government agencies						467,185						558,599
Other, including local municipalities and commercial customers						90,960						120,299
Total revenue						$	3,461,537					$	2,886,815

Changes in Contract Assets

Changes in the reserves against accounts receivable were as follows:

						Year ended September 30,
(in thousands)						2020						2019						2018
Balance at beginning of year						$	5,382					$	4,285					$	6,843
Additions to reserve						12,976						4,018						243
Deductions						(12,307)						(2,921)						(2,801)
Balance at end of year						$	6,051					$	5,382					$	4,285

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- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

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X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

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- References

No definition available.

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