v3.8.0.1
Restructuring and Other Related Charges - Additional Information (Details)
1 Months Ended 5 Months Ended 12 Months Ended
Oct. 31, 2015
USD ($)
Aug. 01, 2015
USD ($)
Feb. 03, 2018
USD ($)
Jan. 28, 2017
USD ($)
employee
Jan. 30, 2016
USD ($)
employee
Sep. 30, 2015
USD ($)
Restructuring Cost and Reserve [Line Items]            
Restructuring and other related charges     $ 5,250,000 $ 96,801,000 $ 63,543,000  
Restructuring charges     12,021,000 44,689,000 47,511,000  
Asset impairment charges   $ 1,400,000        
Proceeds from sales of property and equipment $ 9,300,000   12,559,000 0 10,007,000  
Gain or loss recognized upon sale of equipment held for sale $ 0   743,000 0 0  
Discontinued operations            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges     10,584,000 8,385,000    
Severance            
Restructuring Cost and Reserve [Line Items]            
Release of reserves - continuing operations     1,612,000 86,000 0  
Other exit-related costs            
Restructuring Cost and Reserve [Line Items]            
Release of reserves - continuing operations     340,000 383,000 0  
Facilities and related costs            
Restructuring Cost and Reserve [Line Items]            
Release of reserves - continuing operations     258,000 0 0  
November 2016 Restructuring            
Restructuring Cost and Reserve [Line Items]            
Cumulative costs incurred     95,600,000      
Restructuring charges       90,300,000    
November 2016 Restructuring | Severance            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       32,600,000    
November 2016 Restructuring | Severance | Discontinued operations            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges     7,015,000 8,385,000    
November 2016 Restructuring | Other exit-related costs            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       5,500,000    
November 2016 Restructuring | Other exit-related costs | Discontinued operations            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges     3,560,000 0    
November 2016 Restructuring | Facilities and related costs            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       1,900,000    
November 2016 Restructuring | Facilities and related costs | Discontinued operations            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges     9,000 0    
November 2016 Restructuring | Contract termination            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       45,000,000    
November 2016 Restructuring | Impairment of equipment and technology licenses            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       5,400,000    
Mobile Platform Business            
Restructuring Cost and Reserve [Line Items]            
Cumulative costs incurred     46,400,000      
Restructuring charges       $ 1,900,000 $ 44,400,000  
Number of employees retained | employee       140    
Number of employees offered with retention bonuses | employee       128    
Mobile Platform Business | Minimum            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs, expected cost to incur           $ 100,000,000
Mobile Platform Business | Maximum            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs, expected cost to incur           $ 130,000,000
Mobile Platform Business | Severance            
Restructuring Cost and Reserve [Line Items]            
Cumulative costs incurred     28,100,000      
Number of employees departed and were paid severance and related benefit costs | employee         825  
Mobile Platform Business | Facilities and related costs            
Restructuring Cost and Reserve [Line Items]            
Cumulative costs incurred     200,000      
Restructuring charges       $ 4,600,000 $ 1,400,000  
Mobile Platform Business | Contract termination            
Restructuring Cost and Reserve [Line Items]            
Cumulative costs incurred     1,300,000      
Release of reserves - continuing operations       300,000    
Mobile Platform Business | Impairment of equipment and technology licenses            
Restructuring Cost and Reserve [Line Items]            
Cumulative costs incurred     8,800,000      
Mobile Platform Business | Write-off of assets held-for-sale            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges       $ 2,200,000    
Mobile Platform Business | Write down of inventory            
Restructuring Cost and Reserve [Line Items]            
Cumulative costs incurred     $ 8,000,000      
Reduction in Operations in Israel and Closing of Other Design Centers            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges         $ 16,300,000  
Total number of employees to be terminated | employee         358  
Reduction in Operations in Israel and Closing of Other Design Centers | Severance            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges         $ 15,100,000  
Reduction in Operations in Israel and Closing of Other Design Centers | Facilities and related costs            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges         $ 1,200,000