Banking facilities (Tables)

12 Months Ended

Mar. 31, 2015

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, 2015
	2014		2015		2014		2015		2014		2015		Interest	Repayment
	$ in thousands				$ in thousands				$ in thousands				rate	terms
Import and export  facilities
Combined limit		6,154		2,564		3,703		1,830		2,451		734
Including sub-limit of:
Notes payable		4,487		2,308		2,527		1,830		1,960		478	HIBOR* +2.5%	Repayable in full within 120 days
Bank overdrafts		641		641		630		—		11		641	Prime rate + 1%	Repayable on demand
Factoring		2,400		2,400		546		—		1,854		2,400	HIBOR* +1.5%	Repayable in 60 days
Other facilities
Export Documentary Credits		1,923		641		—		—		1,923		641
Short Term Loans		1,026		3,547		1,026		1,026		—		2,521	(Note A)	A Revolving loan is repayable in 30 days
Long Term Loans (1)		1,595		2,686		748		2,350		847		336	(Note A)	Term loans are repayable monthly over the 3-year term.
		10,698		9,438		5,477		5,206		5,221		4,232

Short-term borrowings

	During the fiscal year ended March 31,
	2014			2015
Bank overdrafts		6.00	%		6.00	%
Notes payable		2.96	%		2.92	%
Term Loan in Hong Kong		2.47	%		2.47	%
Term Loan in PRC		—			6.77	%
Factoring		1.96	%		1.74	%