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Intangible Assets, Net - Additional Information (Detail) (USD $)
 3 Months Ended
Mar. 31, 2015
Finite-Lived Intangible Assets [Line Items]  
Amortization expense of finite lived intangible assets $ 29,000us-gaap_AmortizationOfIntangibleAssets [1]
Impairment loss on intangible assets 0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
Software and Website [Member]  
Finite-Lived Intangible Assets [Line Items]  
Amortization expense of finite lived intangible assets 12,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_ComputerSoftwareIntangibleAssetMember
Lease Agreements [Member]  
Finite-Lived Intangible Assets [Line Items]  
Amortization expense of finite lived intangible assets 12,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_LeaseAgreementsMember
Non-compete [Member]  
Finite-Lived Intangible Assets [Line Items]  
Amortization expense of finite lived intangible assets 3,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_NoncompeteAgreementsMember
Customer Relationship [Member]  
Finite-Lived Intangible Assets [Line Items]  
Amortization expense of finite lived intangible assets $ 2,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
[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.