Stock option and bonus plans (Tables)

12 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Stock option summary

	Number			Weighted average exercise
	of options			price
Balance, March 31, 2014		70,000		$	5.47
Expired		(40,000	)	$	6.20
Balance, March 31, 2015		30,000		$	4,50
Expired		(30,000	)	$	4.50
Granted		850,000		$	1.50
Balance, March 31, 2016		850,000		$	1.50

Information regarding stock options

				Weighted
		Number		average		Exercisable
Weighted average		outstanding at		remaining life		shares at
exercise price		March 31, 2016		(years)		March 31, 2016
$	1.50		850,000		6.5		850,000

Schedule of Fair value of Stock Options

	For the Fiscal Year
	Ended March 31, 2016
Risk-free interest rate (1)	1.63% to 2.36%
Expected life (years) (2)	4.71 to 9.71
Expected dividend yield (3)		0	%
Volatility (4)		73.63	%
Fair value of options at grant date per share	$	0.81 to $1.08

Schedule of Share Based Compensation

	For the Fiscal Year Ended March 31,
	2014		2015		2016
	$ in thousands		$ in thousands		$ in thousands
Administration and general		-		-		801
Total		-		-		801