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Debt
 6 Months Ended
Sep. 30, 2021
Debt Disclosure [Abstract]  
Debt Debt
As of March 31, 2021 and September 30, 2021, debt comprised bank overdrafts of $1.7 million and $2.1 million, respectively. Net accounts receivable as of March 31, 2021 and September 30, 2021 of $2.3 million and $3.2 million, respectively, were pledged as security for the Company’s overdraft facilities.

Details of undrawn facilities are shown below:
Interest rateMarch 31,
2021		September 30,
2021
Undrawn borrowing facilities at floating rates include:
– Standard Bank Limited:
Overdraft
SA Prime* less 1.2%
$2,616 $2,093 
Vehicle and asset finance
SA Prime* less 1.2%
570 562 
Working capital facility
SA Prime* less 0.25%
1,676 1,653 
– Nedbank Limited overdraft
SA Prime* less 2%
670 661 
$5,532 $4,969 
*South African prime interest rate

As of March 31, 2021 and September 30, 2021, the South African prime interest rate was 7.0%. The Standard Bank Limited and Nedbank Limited facilities have no fixed renewal date and are repayable on demand. The facility from Nedbank Limited is unsecured.