Selected Quarterly Financial Data (unaudited) (Tables)
 12 Months Ended
Feb. 29, 2020
Disclosure Text Block [Abstract]  
Quarterly Financial Information [Table Text Block]
The following table sets forth selected quarterly consolidated financial data for the fiscal years ended February 29, 2020 and February 28, 2019, respectively. The summation of quarterly net income (loss) per share may not agree with annual net income (loss) per share due to rounding:
 
   
2020
 
   
First

Quarter
   
Second

Quarter
   
Third
Quarter
   
Fourth

Quarter
 
   (in thousands, except per share amounts) 
Net sales
  $2,709   $3,228   $1,466   $3,194 
Gross profit
   425    499    264    1,189 
Net income (loss)
   (326)    (435)    (628)    183 
Basic net income (loss) per share
  $(0.06)   $(0.07)   $(0.11)   $0.03 
Diluted net income (loss) per share
  $(0.06)   $(0.07)   $(0.11)   $0.03 
 
 
 
 
   
2019
 
   
First

Quarter
   
Second

Quarter
   
Third
Quarter
   
Fourth

Quarter
 
   (in thousands, except per share amounts) 
Net sales
  $4,021   $3,321   $4,170   $3,511 
Gross profit
   996    879    1,096    1,069 
Net income (loss)
   54    (6)    71    (52) 
Basic net income (loss) per share
  $0.01   $(0.00)   $0.01   $(0.01) 
Diluted net income (loss) per share
  $0.01   $(0.00)   $0.01   $(0.01)