Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.7.0.1
Subsequent Events - Additional Information (Detail) - Building Lease Agreement [Member] - Subsequent Event [Member]
$ in Thousands
Jul. 24, 2017
USD ($)
ft²
Options
Subsequent Event [Line Items]  
Lease provided area of office space (in square feet) | ft² 37,875
Office building lease agreement, initial term 82 months
Office building lease agreement, renewal terms 5 years
Number of lease renewal options (in leases) | Options 2
Total minimum lease payments $ 9,465
Minimum lease payments expected to be paid over the next twelve months $ 123