Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets (Detail 2)

v2.4.1.9
Goodwill and Intangible Assets (Detail 2) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Sep. 30, 2014
Components of intangible assets          
Cost $ 53,161us-gaap_FiniteLivedIntangibleAssetsGross   $ 53,161us-gaap_FiniteLivedIntangibleAssetsGross   $ 56,072us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated Amortization 19,130us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization   19,130us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization   16,833us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Intangible Assets, net 34,031us-gaap_FiniteLivedIntangibleAssetsNet   34,031us-gaap_FiniteLivedIntangibleAssetsNet   39,239us-gaap_FiniteLivedIntangibleAssetsNet
Weighted average remaining life of assets not fully amortized     11 years 6 months    
Amortization expense 1,432us-gaap_AmortizationOfIntangibleAssets 1,468us-gaap_AmortizationOfIntangibleAssets 2,907us-gaap_AmortizationOfIntangibleAssets 2,823us-gaap_AmortizationOfIntangibleAssets  
Anticipated annual amortization expense related to acquisitions 6mms_FiniteLivedIntangibleAssetsEstimatedAnnualAmortizationExpenseBusinessCombinations   6mms_FiniteLivedIntangibleAssetsEstimatedAnnualAmortizationExpenseBusinessCombinations    
Estimated future amortization expense          
Six months ended September 30, 2015         2,758us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
Year ended September 30, 2016         5,354us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Year ended September 30, 2017         4,955us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Year ended September 30, 2018         3,820us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Year ended September 30, 2019         2,936us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Year ended September 30, 2020         1,832mms_FiniteLivedIntangibleAssetsAmortizationExpenseYearSix
Customer contracts and relationships          
Components of intangible assets          
Cost 40,027us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
  40,027us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
  42,403us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
Accumulated Amortization 9,545us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
  9,545us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
  7,821us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
Intangible Assets, net 30,482us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
  30,482us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
  34,582us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_CustomerContractsAndCustomerRelationshipsMember
Weighted average remaining life of assets not fully amortized     12 years 6 months    
Technology-based intangible assets          
Components of intangible assets          
Cost 8,828us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
  8,828us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
  9,295us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
Accumulated Amortization 7,095us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
  7,095us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
  6,910us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
Intangible Assets, net 1,733us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
  1,733us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
  2,385us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
Weighted average remaining life of assets not fully amortized     2 years 10 months 24 days    
Trademarks and trade names          
Components of intangible assets          
Cost 4,306us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
  4,306us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
  4,374us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
Accumulated Amortization 2,490us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
  2,490us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
  2,102us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
Intangible Assets, net $ 1,816us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
  $ 1,816us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
  $ 2,272us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mms_TrademarksTradeNamesMember
Weighted average remaining life of assets not fully amortized     2 years 6 months