Annual report pursuant to Section 13 and 15(d)

Subsequent Event - Additional Information (Detail)

v3.8.0.1
Subsequent Event - Additional Information (Detail) - Convertible Debt Securities - WayBlazer Note - Subsequent Event
$ in Millions
1 Months Ended
Jan. 31, 2018
USD ($)
Subsequent Event [Line Items]  
Cost method investments, original cost $ 2.0
Interest rate stated percentage 8.00%
Cost method investment, ownership percentage (less than) 8.00%
License term 5 years