Annual report pursuant to Section 13 and 15(d)

Restructuring Charges (Details)

v3.8.0.1
Restructuring Charges (Details)
$ in Millions
12 Months Ended
Jun. 27, 2017
employee
Jan. 12, 2017
Dec. 31, 2017
USD ($)
Restructuring and Related Activities [Abstract]      
Reduction in force   7.00%  
Restructuring Cost and Reserve [Line Items]      
Reduction of headcount, employees | employee 50    
Employee severance and benefits costs      
Restructuring Cost and Reserve [Line Items]      
Expected cash expenditures     $ 6.0
Total reduction in force expenses     $ 5.6