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Accounts Receivable, Net - Accounts Receivable, Net (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Receivables [Abstract]    
Accounts receivable $ 2,335us-gaap_AccountsReceivableGrossCurrent $ 400us-gaap_AccountsReceivableGrossCurrent
Less allowance for doubtful accounts (84)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent (105)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Total accounts receivable, net $ 2,251us-gaap_AccountsReceivableNetCurrent $ 295us-gaap_AccountsReceivableNetCurrent