Banking facilities (Tables)

12 Months Ended

Mar. 31, 2022

Equity [Abstract]

General banking facilities

	Amount available				Amount utilized				Amount unutilized				Terms of banking facilities as of
	March 31,				March 31,				March 31,				March 31, 2022
	2021		2022		2021		2022		2021		2022		Interest	Repayment
	$ in thousands				$ in thousands				$ in thousands				rate	Terms
Import and export facilities
Combined limit		2,564		2,564		492		266		2,072		2,298
Including sub-limit of:
Notes payable		2,308		2,308		25		74		2,283		2,234	HIBOR* +2.5%	Repayable in full within 120 days
Bank overdrafts		641		641		—		—		641		641	Prime rate +1%	Repayable on demand
Long term loans (1)		1,214		1,214		467		192		747		1,022	HIBOR* +2%	Term loans repayable monthly over 3 years.
Other facilities
Export documentary credits		641		641		—		—		641		641
Revolving loan		1,923		1,923		500		66		1,423		1,857	HIBOR* +2.25%	Repayable until redemption of a listed debt instrument
		────		─────		─────		─────		─────		─────
		5,128		5,128		992		332		4,136		4,796
		════		═════		═════		═════		═════		═════

(1) A clause in the banking facilities states that the term loans are subject to review any time and also subject to the bank's overriding right to repayment on demand, including the right to call for cash cover on demand for prospective and contingent liabilities. Therefore, all long-term loans were classified as current liabilities in the consolidated balance sheets.

* HIBOR is the Hong Kong Interbank Offer Rate

Short-term borrowings

	During the fiscal year ended March 31,
	2021			2022
Bank overdrafts		6.00	%		6.00	%
Notes payable		2.85	%		2.77	%
Term loans		2.78	%		2.26	%
Revolving loan		2.50	%		2.36	%