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Accounts Receivable (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Billed and billable $ 135,437us-gaap_BilledContractReceivables $ 187,470us-gaap_BilledContractReceivables
Less: unpaid deferred revenue (72,840)mstr_UnpaidDeferredRevenue (104,425)mstr_UnpaidDeferredRevenue
Accounts receivable, gross 62,597us-gaap_AccountsReceivableGrossCurrent 83,045us-gaap_AccountsReceivableGrossCurrent
Less: allowance for doubtful accounts (4,161)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent (4,412)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accounts receivable, net $ 58,436us-gaap_AccountsReceivableNetCurrent $ 78,633us-gaap_AccountsReceivableNetCurrent