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Summary of Significant Accounting Policies - Additional Information (Detail)
 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2015
USD ($)
Item
Dec. 31, 2014
USD ($)
Mar. 31, 2015
Data Solutions and Services [Member]
Mar. 31, 2015
Minimum [Member]
Mar. 31, 2015
Maximum [Member]
Mar. 31, 2015
Sales Revenue, Net [Member]
Item
Mar. 31, 2015
Accounts Receivable [Member]
Item
Mar. 31, 2015
Customer Concentration Risk [Member]
Sales Revenue, Net [Member]
Customer One [Member]
Mar. 31, 2015
Customer Concentration Risk [Member]
Accounts Receivable [Member]
Customer One [Member]
Mar. 31, 2015
Customer Concentration Risk [Member]
Accounts Receivable [Member]
Customer Two [Member]
Mar. 31, 2015
Customer Concentration Risk [Member]
Accounts Receivable [Member]
Customer Three [Member]
Mar. 31, 2015
Customer Concentration Risk [Member]
Accounts Receivable [Member]
Customer Four [Member]
Mar. 31, 2015
Supplier Concentration Risk [Member]
Net Assets, Segment [Member]
Item
Mar. 31, 2015
Supplier Concentration Risk [Member]
Net Assets, Segment [Member]
Supplier One [Member]
Mar. 31, 2015
Supplier Concentration Risk [Member]
Net Assets, Segment [Member]
Supplier two.
Mar. 31, 2015
Supplier Concentration Risk [Member]
Net Assets, Segment [Member]
Supplier three.
Mar. 31, 2015
Interactive Data [Member]
USD ($)
Mar. 31, 2015
Tiger Media [Member]
USD ($)
Mar. 31, 2015
Software and Website [Member]
Mar. 31, 2015
Lease Agreements [Member]
Mar. 31, 2015
Non-compete [Member]
Mar. 31, 2015
Customer Relationship [Member]
Mar. 31, 2015
China [Member]
USD ($)
Dec. 31, 2014
China [Member]
USD ($)
Mar. 31, 2015
United States and Hong Kong [Member]
USD ($)
Dec. 31, 2014
United States and Hong Kong [Member]
HKD
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                                                    
Net loss $ (1,654,000)us-gaap_ProfitLoss [1]                                                  
Net cash used in operating activity (2,129,000)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations [1]                                                  
Accumulated deficit (2,246,000)us-gaap_RetainedEarningsAccumulatedDeficit (610,000)us-gaap_RetainedEarningsAccumulatedDeficit                                                
Cash and bank deposits                                             2,870,000us-gaap_CashAndDueFromBanks
/ us-gaap_StatementGeographicalAxis
= country_CN		 0us-gaap_CashAndDueFromBanks
/ us-gaap_StatementGeographicalAxis
= country_CN		 4,426,000us-gaap_CashAndDueFromBanks
/ us-gaap_StatementGeographicalAxis
= idi_UnitedStatesAndHongKongMember		 5,996,000us-gaap_CashAndDueFromBanks
/ us-gaap_StatementGeographicalAxis
= idi_UnitedStatesAndHongKongMember
FDIC Insurance limit 250,000us-gaap_CashFDICInsuredAmount                                                  
Estimated useful life of intangible assets                                     3 years 6 years 10 years 10 years        
Goodwill 40,698,000us-gaap_Goodwill 5,226,000us-gaap_Goodwill                             5,226,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= idi_InteractiveDataMember		 35,472,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= idi_TigerMediaMember		                
Impairment loss on intangible assets 0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill                                                  
Advertising services revenue recognition period     1 year 3 days 1 year                                          
Advertising and promotion costs $ 35,000us-gaap_MarketingAndAdvertisingExpense                                                  
Contributions to PRC employee 21.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent                                                  
Employer contribution 5.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent                                                  
Recognized income tax positions 50.00%idi_IncomeTaxBenefitRealizationProbabilityPercentage                                                  
Effective income tax rate 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations                                                  
Operating segments 2us-gaap_NumberOfOperatingSegments                                                  
Major customers           1idi_NumberOfMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember		 4idi_NumberOfMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember		                                      
Concentration risk               32.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= idi_CustomerOneMember		 29.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= idi_CustomerOneMember		 18.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= idi_CustomerTwoMember		 16.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= idi_CustomerThreeMember		 13.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= idi_CustomerFourMember		   37.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_NetAssetsSegmentMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_SupplierConcentrationRiskMember
/ us-gaap_SupplyCommitmentAxis
= idi_SupplierOneMember		 17.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_NetAssetsSegmentMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_SupplierConcentrationRiskMember
/ us-gaap_SupplyCommitmentAxis
= idi_SupplierTwoMember		 10.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_NetAssetsSegmentMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_SupplierConcentrationRiskMember
/ us-gaap_SupplyCommitmentAxis
= idi_SupplierThreeMember		                    
Number of major suppliers                         3idi_NumberOfMajorSuppliers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_NetAssetsSegmentMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_SupplierConcentrationRiskMember		                          
[1] As IDI Holdings, LLC, the accounting acquirer of the merger consummated effective as of March 21, 2015, was incorporated on September 22, 2014, no comparative figures for the corresponding period in 2014 are presented.