XML 19 R24.htm IDEA: XBRL DOCUMENT
v3.20.1

Organization and Basis of Presentation - Narrative (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) $ / shares | Mar. 31, 2020 USD ($) segment | Oct. 01, 2019 USD ($) | Sep. 30, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Goodwill | $ 585,772 | $ 585,772 |  | $ 584,469
Billed, billable and unbilled accounts receivable | 650,100 | $ 650,100 |  |
Number of operating segments | segment |  | 3 |  |
Bad debt expense | 7,800 |  |  |
Reduction of revenue | (24,000) |  |  |
Reduction of net income | $ (18,000) |  |  |
Reduction of diluted earnings per share | $ / shares | $ (0.28) |  |  |
Total lease liabilities | $ 187,995 | $ 187,995 |  |
Accounting Standards Update 2016-02 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total lease liabilities |  |  | $ 214,500 |

X
- Definition Accounts Receivable, Billed, Billable, and Unbilled, Net Of Allowance For Credit Loss + References No definition available. + Details
Name: | mms_AccountsReceivableBilledBillableAndUnbilledNetOfAllowanceForCreditLoss
Namespace Prefix: | mms_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Disruption Of Markets, (Increase) Decrease In Diluted Earnings Per Share + References No definition available. + Details
Name: | mms_DisruptionOfMarketsIncreaseDecreaseInDilutedEarningsPerShare
Namespace Prefix: | mms_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disruption Of Markets, (Increase) Decrease In Net Income + References No definition available. + Details
Name: | mms_DisruptionOfMarketsIncreaseDecreaseInNetIncome
Namespace Prefix: | mms_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disruption Of Markets, (Increase) Decrease In Revenue + References No definition available. + Details
Name: | mms_DisruptionOfMarketsIncreaseDecreaseInRevenue
Namespace Prefix: | mms_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201602Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |