XML 49 R58.htm IDEA: XBRL DOCUMENT v3.20.1
Significant Customers and Foreign Sales - Export sales to customers located outside the United States (Details) - USD ($)
 12 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Export sales to customers located outside the United States    
Total sales $ 10,849,000 $ 7,560,000
Significant customers and foreign sales    
Percent of total revenues 71.00% 65.00%
Three Customers    
Significant customers and foreign sales    
Percent of total revenues 30.00%  
One Customer    
Significant customers and foreign sales    
Percent of total revenues   14.00%
Asia Pacific (APAC)    
Export sales to customers located outside the United States    
Total sales $ 4,817,000 $ 3,659,000
Europe, Middle East, Asia (EMEA)    
Export sales to customers located outside the United States    
Total sales 4,512,000 2,729,000
Latin America    
Export sales to customers located outside the United States    
Total sales $ 1,520,000 $ 1,172,000