XML 71 R58.htm IDEA: XBRL DOCUMENT v3.21.1
7. FINANCIAL INSTRUMENTS - Unrealized losses and fair value (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Fair Value    
Less Than 12 Months, Fair Value $ 3,536 $ 2,498
Total, Fair Value 3,536 2,498
Unrealized Loss    
Less Than 12 Months, Unrealized Loss 2 2
Total, Unrealized Loss 2 2
Certificates of deposit    
Fair Value    
Less Than 12 Months, Fair Value 1,499 2,498
Total, Fair Value 1,499 2,498
Unrealized Loss    
Less Than 12 Months, Unrealized Loss 1 2
Total, Unrealized Loss 1 $ 2
Supranational obligations    
Fair Value    
Less Than 12 Months, Fair Value 2,037  
Total, Fair Value 2,037  
Unrealized Loss    
Less Than 12 Months, Unrealized Loss 1  
Total, Unrealized Loss $ 1