Other intangible assets (Tables)

12 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Other intangible assets

	Other intangible assets
	March 31,
	2012			2013
	$ in thousands			$ in thousands
Cost		5,927			6,769
Less: accumulated amortization		(1,937	)		(2,179	)
		────────			────────
		3,990			4,590
		════════			════════

Components of other tangible assets

	March 31,
	2012		2013
	$ in thousands		$ in thousands
Land use right of factory land in Shenzhen, Guangdong, PRC		1,577		2,215
Land use right of factory land in Xinxing, Guangdong, PRC		2,413		2,375
		────────		────────
		3,990		4,590
		════════		════════

Schedule of amortization expenses

	$ in thousands
2014	244
2015	244
2016	244
2017	244
2018	244
Thereafter	3,370
	───────
Total	4,590
	══════