XML 46 R35.htm IDEA: XBRL DOCUMENT
v3.19.1

Acquisition of Citizen Engagement Centers Business - Schedule of the Valuation of the Intangible Assets Acquired (Details) - General Dynamics Information Technology's Citizen Engagement Centers $ in Thousands | 6 Months Ended
--- | ---
Mar. 31, 2019 USD ($)
Finite-Lived Intangible Assets [Line Items] |
Fair value | $ 122,300
Customer relationships - all contracts except U.S. Census |
Finite-Lived Intangible Assets [Line Items] |
Useful life | 10 years
Fair value | $ 85,300
Customer relationships - U.S. Census |
Finite-Lived Intangible Assets [Line Items] |
Useful life | 2 years
Fair value | $ 37,000

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
Name: | us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mms_GeneralDynamicsInformationTechnologysCitizenEngagementCentersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=mms_CustomerRelationshipsAllContractsExceptUnitedStatesCensusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=mms_CustomerRelationshipsUnitedStatesCensusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |