XML 56 R36.htm IDEA: XBRL DOCUMENT v3.5.0.2
Acquisition - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 30, 2016
Jul. 30, 2016
Aug. 01, 2015
Jan. 31, 2016
Business Acquisition [Line Items]        
Purchase price of the acquisition     $ 7,360,000  
Fair value assumptions, Weighted average cost of capital   15.50%    
Fair value key assumptions   Key assumptions include (1) a weighted average cost of capital of 15.5%; (2) a range of earnings projections from $110,000-$700,000 and (3) a range of contract renewal probability from 30%-100%.    
Minimum [Member]        
Business Acquisition [Line Items]        
Fair value assumptions, Earnings projections   $ 110,000    
Fair value assumptions, Contract renewal probability   30.00%    
Maximum [Member]        
Business Acquisition [Line Items]        
Fair value assumptions, Earnings projections   $ 700,000    
Fair value assumptions, Contract renewal probability   100.00%    
RITEC [Member]        
Business Acquisition [Line Items]        
Completion date of acquisition   Jun. 19, 2015    
Date of asset purchase agreement   Jun. 18, 2015    
Purchase price of the acquisition   $ 7,360,000    
Amount held in escrow related to business acquisition $ 750,000 $ 750,000    
Duration of escrow deposits   12 months    
Escrow amount recovered 99,000 $ 99,000    
General and administrative expenses       $ 109,000
Estimated inventory purchase 200,000 $ 200,000    
Percentage of royalties on sale price of products   7.50%    
Initial royalty payment period   5 years    
License agreement, Amortization period   5 years    
Goodwill deductible for tax purposes $ 3,530,000 $ 3,530,000