Quarterly report pursuant to Section 13 or 15(d)

Concentrations - Additional Information (Detail)

v2.4.0.8
Concentrations - Additional Information (Detail)
9 Months Ended 12 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Account Receivable
Dec. 31, 2013
Account Receivable
Sep. 30, 2014
Customer Concentration Risk
Revenue
Sep. 30, 2013
Customer Concentration Risk
Revenue
Sep. 30, 2014
Customer Concentration Risk
Revenue
Sep. 30, 2013
Customer Concentration Risk
Revenue
Concentration Risk [Line Items]            
Maximum revenue and account receivable with individual customer Less than 10% Less than 10% Less than 10% Less than 10% Less than 10% Less than 10%