Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Additional Information (Detail)

v3.3.0.814
Related-Party Transactions - Additional Information (Detail) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Former member of Board of Directors [Member]    
Related Party Transaction [Line Items]    
Advisory fee paid to related party $ 45,000 $ 60,000