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Acquisition - Summary of Purchase Price Allocation (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 21, 2015
--- | --- | --- | ---
Liabilities assumed: |  |  |
Goodwill | $ 40,698 us-gaap_Goodwill | $ 5,226 us-gaap_Goodwill |
Tiger Media [Member] |  |  |
Liabilities assumed: |  |  |
Goodwill | 35,472 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember |  |
Tiger Media [Member] | The Best One Inc [Member] |  |  |
Assets acquired: |  |  |
Cash and bank |  |  | 3,569 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Accounts receivable |  |  | 1,808 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other current assets |  |  | 326 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Property and equipment, net |  |  | 1,419 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Intangible assets, net |  |  | 4,280 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Long-term deferred assets |  |  | 586 idi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredCostsNoncurrent / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total |  |  | 11,988 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Liabilities assumed: |  |  |
Accounts payable |  |  | (1,519)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Accrued expenses and other payables |  |  | (736)idi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherLiabilities / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Acquisition consideration payable |  |  | (464)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContingentLiability / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Amounts due to related parties |  |  | (124)idi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRelatedPartyPayable / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Deferred revenue |  |  | (80)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total |  |  | (2,923)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Non-controlling interests |  |  | (425)us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Goodwill |  |  | 35,472 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total consideration |  |  | $ 44,112 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest / us-gaap_BusinessAcquisitionAxis = idi_TigerMediaMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

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- Definition This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 + Details
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