Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.5.0.2
Summary of Significant Accounting Policies - Additional Information (Detail)
9 Months Ended
Sep. 30, 2016
USD ($)
Summary Of Significant Accounting Policies [Line Items]  
Maturity period of highly liquid investments Three months or less
Level 1 [Member]  
Summary Of Significant Accounting Policies [Line Items]  
Liabilities $ 0
Level 2 [Member]  
Summary Of Significant Accounting Policies [Line Items]  
Liabilities $ 0