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Debt (Details) - USD ($)
6 Months Ended
Apr. 27, 2016
Nov. 02, 2015
Jul. 29, 2016
Sep. 14, 2015
Aug. 03, 2015
Jun. 30, 2015
Debt Instrument [Line Items]            
Convertible notes outstanding       $ 22,500,000    
Common Stock, Class A            
Debt Instrument [Line Items]            
Shares issued in conversion (in shares) 2,008,924          
Convertible notes $ 22,500,000          
Conversion price $ 11.20          
Conversion price, percent of IPO price 80.00%          
Price per share (usd per share) $ 14.00          
Convertible Notes Payable            
Debt Instrument [Line Items]            
Maximum principal amount of convertible notes to be sold       $ 500,000.0 $ 22,000,000 $ 25,000,000
Line of Credit | Revolving Credit Facility            
Debt Instrument [Line Items]            
Maximum borrowing capacity   $ 30,000,000        
Maximum amount outstanding during period   30,000,000        
Additional borrowing capacity   $ 30,000,000        
Line of credit, outstanding balance     $ 0      
Unused capacity, commitment fee percentage     0.35%      
Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)            
Debt Instrument [Line Items]            
Basis spread on variable rate     1.60%