XML 33 R77.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Income Taxes - Significant Portions of Deferred Tax Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Deferred tax assets-current: |  |  |
Tax loss carried forwards of a subsidiary | $ 37 |  |

X
- Definition Deferred tax assets tax loss carried forwards of subsidiary current. + References No definition available. + Details
Name: | idi_DeferredTaxAssetsTaxLossCarriedForwardsOfSubsidiaryCurrent
Namespace Prefix: | idi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DeferredTaxAssetsNetCurrentClassificationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration