Income Tax - Tax expense attributable to earnings (Details 7) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Tax - Tax Expense Attributable To Earnings Details 7
Loss before income taxes	$ (221)	$ (725)	$ (900)
Income tax benefit on pretax income at statutory rate	36	120	148
Effect of different tax rates of subsidiary operating in other jurisdictions	(28)	(249)	176
Profit not subject to income tax	1,129	3,600	4,369
Expenses not deductible for income tax purposes	(1,137)	(3,469)	(4,715)
(Increase) / decrease in valuation allowance	(153)	84	(299)
Reversal of provision as a result of development of tax rules		(31)	20
Tax losses not yet recognized / (utilization of tax losses not previously recognized)	153	(84)	299
Total income tax expense		$ (29)	$ (2)

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Amount of deferred income tax expense (benefit) and income tax credits.

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Amount of other deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. For example, but not limited to, acquisition-date income tax benefits or expenses recognized from changes in the acquirer's valuation allowance for its previously existing deferred tax assets resulting from a business combination and adjustments to beginning-of-year balance of a valuation allowance because of a change in circumstance causing a change in judgment about the realizability of the related deferred tax asset in future periods.

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Amount after tax of loss recognized for the write-down to fair value, less cost to sell, of a disposal group. Includes after tax gain for a subsequent increase in fair value (less cost to sell) up to the cumulative loss previously recognized through write-downs.

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The net increase (decrease) in the valuation allowance for servicing assets subsequently measured using the amortization method.

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