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Description of the Business and Basis of Presentation (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 27, 2016
USD ($)
$ / shares
shares
Nov. 24, 2015
$ / shares
shares
Jan. 31, 2016
shares
Nov. 03, 2017
USD ($)
$ / shares
shares
Oct. 28, 2016
USD ($)
Nov. 03, 2017
USD ($)
segment
$ / shares
shares
Oct. 28, 2016
USD ($)
Feb. 03, 2017
$ / shares
shares
Apr. 22, 2016
$ / shares
shares
Apr. 08, 2016
shares
Class of Stock [Line Items]                    
Preferred stock, shares authorized (in shares) | shares       200,000,000   200,000,000   200,000,000 200,000,000  
Preferred stock, par value (usd per share) | $ / shares       $ 0.01   $ 0.01   $ 0.01 $ 0.01  
Number of reportable segments | segment           1        
Proceeds from initial public offering, net           $ 0 $ 99,604      
Discounts, commissions and offering expenses $ 12,400                  
Reclassification                    
Research and development       $ 19,501 $ 16,963 58,673 51,933      
Sales and marketing       37,296 29,725 112,085 91,807      
General and administrative       22,896 21,626 67,438 64,311      
Total operating expenses       $ 79,693 68,314 $ 238,196 208,051      
Common Stock, Class A                    
Class of Stock [Line Items]                    
Common stock, shares authorized (in shares) | shares   1,000 1,000 2,500,000,000   2,500,000,000   2,500,000,000   2,500,000,000
Common stock, par value (usd per share) | $ / shares   $ 0.01   $ 0.01   $ 0.01   $ 0.01    
Common stock, shares issued (in shares) | shares 8,000,000                  
Common stock, shares outstanding (in shares) | shares       11,077,000   11,077,000   10,566,000    
Price per share (usd per share) | $ / shares $ 14.00                  
Proceeds from initial public offering, net $ 99,600                  
Common Stock, Class A | Common Stock                    
Class of Stock [Line Items]                    
Common stock, shares issued, conversion of notes (in shares) | shares 2,008,924         376,000        
Common Stock, Class B                    
Class of Stock [Line Items]                    
Common stock, shares authorized (in shares) | shares   1,000 1,000 500,000,000   500,000,000   500,000,000   500,000,000
Common stock, par value (usd per share) | $ / shares   $ 0.01   $ 0.01   $ 0.01   $ 0.01    
Common stock, shares issued (in shares) | shares   1,000                
Common stock, shares outstanding (in shares) | shares   1,000   70,000,000   70,000,000   70,000,000    
Stock split     70,000              
As Reported                    
Reclassification                    
Research and development         12,181   38,625      
Sales and marketing         26,424   82,559      
General and administrative         29,709   86,867      
Total operating expenses         68,314   208,051      
Reclassification                    
Reclassification                    
Research and development         4,782   13,308      
Sales and marketing         3,301   9,248      
General and administrative         (8,083)   (22,556)      
Total operating expenses         $ 0   $ 0      
Predecessor                    
Class of Stock [Line Items]                    
Common stock, shares authorized (in shares) | shares   1,000                
Common stock, par value (usd per share) | $ / shares   $ 0.01                
Common stock, shares issued (in shares) | shares   1,000                
Common stock, shares outstanding (in shares) | shares   1,000                
IPO | Denali                    
Class of Stock [Line Items]                    
Percent of outstanding shares owned           86.30%        
Percent of voting interests owned           98.40%