XML 20 R42.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Companys Deferred Tax Assets Net of Deferred Tax Liabilities and Valuation Allowance (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Schedule of Deferred Income Tax Assets and Liabilities |  |
Deferred tax assets, net of deferred tax liabilities | $ 14,707 mstr_DeferredTaxAssetsLiabilitiesGross | $ 19,321 mstr_DeferredTaxAssetsLiabilitiesGross
Valuation allowance | (2,332)us-gaap_DeferredTaxAssetsValuationAllowance | (2,311)us-gaap_DeferredTaxAssetsValuationAllowance
Deferred tax assets, net of deferred tax liabilities and valuation allowance | $ 12,375 us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 17,010 us-gaap_DeferredTaxAssetsLiabilitiesNet

X
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. + References No definition available. + Details
Name: | mstr_DeferredTaxAssetsLiabilitiesGross
Namespace Prefix: | mstr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | mstr_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesLineItems
Namespace Prefix: | mstr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsLiabilitiesNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant