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Restatement of Previously Issued Consolidated Financial Statements - Impact of Restatement Adjustments and Correcting Classifications Adjustments on Consolidated Statement of Cash Flow (Parenthetical) (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2013
USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items]  
Proceeds from initial public offering, net of cost of offering $ 12,567
As Previously Reported [Member]  
Error Corrections and Prior Period Adjustments Restatement [Line Items]  
Proceeds from initial public offering, net of cost of offering 12,567
As Restated [Member]  
Error Corrections and Prior Period Adjustments Restatement [Line Items]  
Proceeds from initial public offering, net of cost of offering $ 12,567