Banking facilities (Tables)

12 Months Ended

Mar. 31, 2018

Banking and Thrift [Abstract]

General banking facilities

	Amount available				Amount utilized				Amount unutilized				Terms of banking facilities as of
	March 31,				March 31,				March 31,				March 31, 2018
	2017		2018		2017		2018		2017		2018		Interest	Repayment
	$ in thousands				$ in thousands				$ in thousands				rate	terms
Import and export  facilities
Combined limit		2,564		2,564		134		99		2,430		2,465
Including sub-limit of:
Notes payable		2,308		2,308		134		99		2,174		2,209	HIBOR* +2.5%	Repayable in full within 120 days
Bank overdrafts		641		641		-		-		641		641	Prime rate + 1%	Repayable on demand
Other facilities
Export Documentary Credits		641		641		-		-		641		641
Short Term Loans		1,923		1,923		-		-		1,923		1,923	(Note A)	Revolving loan repayable in 30 days
Long Term Loans (1)		178		-		143		-		35		-	(Note B)	Term loans repayable monthly over 3 years.
		5,306		5,128		277		99		5,029		5,029

Short-term borrowings

	During the fiscal year ended March 31,
	2017			2018
Bank overdrafts		6.00	%		6.00	%
Notes payable		3.13	%		3.42	%
Term Loan in Hong Kong		2.59	%		2.69	%