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Acquisition - Trojan Label - Additional Information (Detail)
12 Months Ended
Feb. 01, 2017
USD ($)
Feb. 01, 2017
DKK (kr)
Jan. 31, 2019
USD ($)
Jan. 31, 2018
USD ($)
Jan. 31, 2017
USD ($)
Feb. 01, 2017
DKK (kr)
Business Acquisition [Line Items]            
Goodwill     $ 12,329,000 $ 13,004,000    
Contingent Earn Out Liability [Member]            
Business Acquisition [Line Items]            
Estimated earnout targets $ 1,400,000          
Estimated earnout targets 500,000          
TrojanLabel ApS [Member]            
Business Acquisition [Line Items]            
Purchase price of acquisition 9,100,000 kr 62,900,000        
Purchase price of acquisition amount held in escrow 900,000         kr 6,400,000
Cash acquired from acquisition 100,000 kr 976,000        
Purchase price of acquisition amount held in escrow account recovered $ 145,000         kr 891,000
Additional contingent consideration period 7 years 7 years        
Additional income generated from reduction in contingent consideration       1,400,000    
General and administrative expense       700,000    
Goodwill $ 7,388,000          
TrojanLabel ApS [Member] | General and Administrative Expense [Member]            
Business Acquisition [Line Items]            
General and administrative expense       $ 100,000 $ 600,000  
TrojanLabel ApS [Member] | Earn-Out Payments, if 80% of Specified Earnings Targets are Achieved [Member]            
Business Acquisition [Line Items]            
Minimum percentage required to entitle additional contingent consideration 80.00% 80.00%        
TrojanLabel ApS [Member] | Contingent Earn Out Liability [Member]            
Business Acquisition [Line Items]            
Fair value key assumptions     Key assumptions in estimating the fair value of the contingent consideration liability (earnout) include (1) the estimated earnout targets over the next seven years of $407,000-$1,280,000, (2) the probability of success (achievement of the various contingent events) from 1.6%-87.2% and (3) a risk-adjusted discount rate of approximately 1.77%-3.35% used to adjust the probability-weighted earnout payments to their present value.      
Estimated earnout targets $ 1,280,000          
Estimated earnout targets $ 407,000          
TrojanLabel ApS [Member] | Intangible Assets [Member]            
Business Acquisition [Line Items]            
Internal rate of return 19.00%         19.00%
Fair value key assumptions     Key assumptions in estimating the fair value of the intangibles include (1) remaining life of existing technology acquired based on estimate of percentage of revenue from 0% - 100% for each product, (2) the Company's internal rate of return of 19.0% and (3) a range of earnings projections from $121,000 - $1,070,000.      
Minimum [Member] | Contingent Earn Out Liability [Member]            
Business Acquisition [Line Items]            
Probability of success 0.00% 0.00%        
Minimum [Member] | TrojanLabel ApS [Member] | Contingent Earn Out Liability [Member]            
Business Acquisition [Line Items]            
Fair value assumptions 0.0177         0.0177
Probability of success 1.60% 1.60%        
Minimum [Member] | TrojanLabel ApS [Member] | Intangible Assets [Member]            
Business Acquisition [Line Items]            
Percentage of revenue on existing technology 0.00% 0.00%        
Fair value assumptions, Annual earnings projections $ 121,000          
Maximum [Member] | Contingent Earn Out Liability [Member]            
Business Acquisition [Line Items]            
Probability of success 0.90% 0.90%        
Maximum [Member] | TrojanLabel ApS [Member] | Contingent Earn Out Liability [Member]            
Business Acquisition [Line Items]            
Fair value assumptions 0.0335         0.0335
Probability of success 87.20% 87.20%        
Maximum [Member] | TrojanLabel ApS [Member] | Intangible Assets [Member]            
Business Acquisition [Line Items]            
Percentage of revenue on existing technology 100.00% 100.00%        
Fair value assumptions, Annual earnings projections $ 1,070,000