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Note 6 - Debt (Details Textual)
₨ in Millions, د.إ in Millions
12 Months Ended
Sep. 20, 2018
USD ($)
Sep. 20, 2018
CAD ($)
Oct. 20, 2017
USD ($)
May 05, 2017
USD ($)
Aug. 05, 2016
USD ($)
Jul. 28, 2016
USD ($)
Jul. 28, 2016
CAD ($)
Jun. 19, 2012
USD ($)
Jan. 31, 2019
USD ($)
Jan. 31, 2018
USD ($)
Jan. 31, 2019
AED (د.إ)
Sep. 19, 2018
USD ($)
Oct. 20, 2017
CAD ($)
May 05, 2017
CAD ($)
Aug. 05, 2016
INR (₨)
Repayments of Lines of Credit                 $ 62,759,000 $ 37,354,000          
Line of Credit, Current                 8,890,000 7,273,000          
Capital Lease Obligations, Total                 536,000 846,000          
Canadian Mortgage Note [Member]                              
Proceeds from Issuance of Debt           $ 6,100,000 $ 8,000,000                
Debt Instrument, Maturity Date           Dec. 23, 2042 Dec. 23, 2042                
Debt Instrument, Interest Rate, Effective Percentage           6.05% 6.05%                
Debt Instrument, Periodic Payment, Interest           $ 29,000 $ 38,000                
Debt Instrument, Periodic Payment, Principal           $ 21,000 $ 27,000                
Mortgage Note Secured by Tennessee Manufacturing Facility [Member]                              
Debt Instrument, Interest Rate, Stated Percentage               4.50%              
Debt Instrument, Maturity Date               Jul. 01, 2027              
Debt Instrument, Issuance Date               Jun. 19, 2012              
Proceeds from Issuance of Secured Debt               $ 1,800,000              
Debt Instrument, Periodic Payment, Total               $ 13,000              
Debt Instrument, Adjustable Interest Rate Period, Commencement Date               Jun. 19, 2022              
Debt Instrument, Interest Rate, Maximum Annual Increase               2.00%              
Debt Instrument, Adjustable Interest Rate, Ceiling               18.00%              
Debt Instrument, Adjustable Interest Rate, Floor               4.50%              
October 2017 Capital Lease [Member]                              
Debt Instrument, Interest Rate, Stated Percentage     4.00%                   4.00%    
Debt Instrument, Maturity Date     Sep. 29, 2022                        
Debt Instrument, Periodic Payment, Total     $ 3,000                        
Capital Lease Obligations, Total     $ 100,000                   $ 180,000    
May 2017 Capital Lease [Member]                              
Debt Instrument, Interest Rate, Stated Percentage       7.80%                   7.80%  
Debt Instrument, Maturity Date       Apr. 30, 2021                      
Debt Instrument, Periodic Payment, Total       $ 9,000                      
Capital Lease Obligations, Total       $ 700,000                   $ 940,000  
August 2016 Capital Lease [Member]                              
Debt Instrument, Interest Rate, Stated Percentage         15.60%                   15.60%
Debt Instrument, Maturity Date         Jul. 05, 2019                    
Capital Lease Obligations, Total         $ 8,000                   ₨ 0.6
Revolving Lines, North America [Member]                              
Debt Instrument, Term 3 years 3 years                          
Line of Credit Facility, Maximum Borrowing Capacity $ 18,000,000                     $ 15,000,000      
Repayments of Lines of Credit $ 3,773,823 $ 4,794,528                          
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.375% 0.375%                          
Line of Credit Facility, Capital Expenditures Restrictions $ 3,000,000                            
Line of Credit Facility, Covenant Terms, EBITDA, Term One 1,807,000                            
Line of Credit Facility, Covenant Terms, EBITDA, Term Two $ 2,462,000                            
Line of Credit Facility, Covenant Terms, EBITDA Ratio, Term One 1.1                            
Line of Credit Facility, Covenant Terms, EBITDA Ratio, Term Two 1.1                            
Line of Credit, Current                 $ 8,890,000 7,273,000          
Debt, Weighted Average Interest Rate                 6.43%   6.43%        
Line of Credit Facility, Current Borrowing Capacity                 $ 3,100,000            
Revolving Lines, North America [Member] | Maximum [Member]                              
Line of Credit Facility, Interest Rate at Period End                 8.00%   8.00%        
Revolving Lines, North America [Member] | Minimum [Member]                              
Line of Credit Facility, Interest Rate at Period End                 6.00%   6.00%        
Letter of Credit [Member]                              
Repayments of Lines of Credit $ 154,500                            
Foreign Revolving Lines [Member]                              
Line of Credit Facility, Maximum Borrowing Capacity                 $ 9,100,000            
Line of Credit, Current                 $ 84,000 $ 123,000          
Debt, Weighted Average Interest Rate                 6.51%   6.51%        
Letters of Credit Outstanding, Amount                 $ 7,900,000            
Line of Credit Facility, Remaining Borrowing Capacity                 1,100,000            
Foreign Revolving Lines [Member] | Revolving Credit Line With 6.15% Interest Rate [Member]                              
Line of Credit Facility, Maximum Borrowing Capacity                 $ 2,200,000   د.إ 8        
Line of Credit Facility, Interest Rate at Period End                 6.15%   6.15%        
Foreign Revolving Lines [Member] | Revolving Credit Line With 6.51% Interest Rate [Member]                              
Line of Credit Facility, Maximum Borrowing Capacity                 $ 6,800,000   د.إ 25        
Line of Credit Facility, Interest Rate at Period End                 6.51%   6.51%        
Foreign Revolving Lines [Member] | EIBOR [Member]                              
Debt Instrument, Basis Spread on Variable Rate                 3.50%            
Foreign Revolving Lines [Member] | Maximum [Member]                              
Line of Credit Facility, Interest Rate at Period End                 6.51%   6.51%        
Foreign Revolving Lines [Member] | Minimum [Member]                              
Line of Credit Facility, Interest Rate at Period End                 6.15%   6.15%        
Debt Instrument, Interest Rate, Stated Percentage                 4.50%   4.50%