Legal Matters - Additional Information (Detail)
9 Months Ended
Sep. 30, 2015
USD ($)
Plaintiff
Commitments And Contingencies [Line Items]  
Number of plaintiffs | Plaintiff 2
Inadvertent Violation under TCPA for Unsolicited Fax Advertisement [Member]  
Commitments And Contingencies [Line Items]  
Damages sought by plaintiff per violation $ 500
Willful Violation under TCPA for Unsolicited Fax Advertisement [Member]  
Commitments And Contingencies [Line Items]  
Damages sought by plaintiff per violation $ 1,500