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Accrued Expenses and Other Payables - Schedule of Accrued Expenses and Other Payables (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Payables and Accruals [Abstract]    
Accrued professional fees $ 492us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent $ 120us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent
Accrued payroll 74us-gaap_AccruedEmployeeBenefitsCurrent 13us-gaap_AccruedEmployeeBenefitsCurrent
Surcharges payable 72us-gaap_TaxesPayableCurrent 82us-gaap_TaxesPayableCurrent
Other current liabilities 101us-gaap_OtherLiabilitiesCurrent 20us-gaap_OtherLiabilitiesCurrent
Total accrued expenses and other payables $ 739us-gaap_AccruedLiabilitiesAndOtherLiabilities $ 235us-gaap_AccruedLiabilitiesAndOtherLiabilities