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Other income (expenses), net (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Other Income and Expenses [Abstract]
Gain (loss) on disposal of property, plant and equipment, net	$ (420)	$ 262	$ 375
Exchange gain (loss), net	(559)	(205)	40
Provision for doubtful accounts, net	(274)	(73)	19
Impairment of property, plant and equipment			(490)
Impairment of goodwill			(392)
Others	232	109	234
Other income (expenses), net from continuing operations	$ (1,021)	$ 93	$ (214)

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- Definition

Amount of expense related to write-down of receivables to the amount recovered. Includes, but is not limited to, accounts receivable and notes receivable.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, on foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation.

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The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.

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