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Revenue Recognition - Summary of Revenues Disaggregated by Primary Product Type (Detail) - USD ($)
$ in Thousands
3 Months Ended
Apr. 28, 2018
Apr. 29, 2017
Disaggregation of Revenue [Line Items]    
Revenue $ 31,487 $ 24,458
Hardware [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 11,977 7,289
Supplies [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 16,701 14,845
Service and Other [Member]    
Disaggregation of Revenue [Line Items]    
Revenue $ 2,809 $ 2,324