Annual report pursuant to Section 13 and 15(d)

Subsequent Event (Details)

v3.8.0.1
Subsequent Event (Details) - Subsequent Event
$ in Millions
Jan. 31, 2018
USD ($)
Subsequent Event  
Reduction in force 5.00%
Employee severance and benefits costs | Minimum  
Subsequent Event  
Expected total reduction in force costs $ 6.5
Employee severance and benefits costs | Maximum  
Subsequent Event  
Expected total reduction in force costs $ 8.5