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Related Party Transactions and Balances - Schedule of Amounts due to Related Parties (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Board member fee	$ 10idi_BoardOfDirectorFees	$ 42idi_BoardOfDirectorFees
Due to related parties	65us-gaap_DueToRelatedPartiesCurrent	73us-gaap_DueToRelatedPartiesCurrent
Compensation Committee Chairman [Member]
Related Party Transaction [Line Items]
Due to related parties	1us-gaap_AccruedProfessionalFeesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = idi_CompensationCommitteeChairmanMember	1us-gaap_AccruedProfessionalFeesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = idi_CompensationCommitteeChairmanMember
Audit Committee Chairman [Member]
Related Party Transaction [Line Items]
Due to related parties	5us-gaap_AccruedProfessionalFeesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = idi_AuditCommitteeChairmanMember	30us-gaap_AccruedProfessionalFeesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = idi_AuditCommitteeChairmanMember
Chief Operating Officer [Member]
Related Party Transaction [Line Items]
Payables for the lease of advertising spaces	40us-gaap_AccountsPayableRelatedPartiesCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ChiefOperatingOfficerMember
Operating expenses paid on behalf of the Company	$ 9us-gaap_DueToAffiliateCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ChiefOperatingOfficerMember

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- Definition

Board of director fees.

+ References

No definition available.

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- Definition

Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

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-Name Accounting Standards Codification

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-Section 50

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-Name Accounting Standards Codification

-Topic 850

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

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-Article 4



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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Current Liabilities

-URI http://asc.fasb.org/extlink&oid=6509677



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section 45

-Paragraph 8

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Name Accounting Standards Codification

-Topic 235

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