Note 12 - Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Jun. 30, 2019	Jun. 30, 2020	Mar. 31, 2019	Mar. 31, 2018
Statement Line Items [Line Items]
As at July 1 / April 1	$ 22,622	$ 22,387	$ 24,482	$ 30,393
Revaluations				3,597
Goodwill previously not recognized				627
Impairment of goodwill				(11,092)
Reclassifications				138
Additions
Foreign exchange	(235)	(468)	(1,860)	819
Carrying value at June 30 / March 31	$ 22,387	$ 21,919	$ 22,622	$ 24,482

The amount of additional goodwill recognised, except goodwill included in a disposal group that, on acquisition, meets the criteria to be classified as held for sale in accordance with IFRS 5. [Refer: Goodwill; Disposal groups classified as held for sale [member]]

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The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

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The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill]

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The increase (decrease) in goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Goodwill]

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The amount of goodwill previously not recognized.

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The increase (decrease) in goodwill resulting from revaluations.

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