Goodwill (Tables)

12 Months Ended

Mar. 31, 2015

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule Of Goodwill [Table Text Block]

The changes in the carrying amount of goodwill for the fiscal years ended March 31, 2014 and 2015 were as follows:

	For the year ended March 31,
	2014						2015
			Accumulated						Accumulated
	Gross		impairment		Net		Gross		impairment		Net
	US$		US$		US$		US$		US$		US$
As at beginning of the year		10,515,168		10,515,168		—		10,515,168		10,515,168		—
As at end of the year		10,515,168		10,515,168		—		10,515,168		10,515,168		—