The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Tax Assets and Liabilities - Summary of Recognized Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets
Deferred tax liabilities	(2,596)	(3,864)
Deferred tax assets and liabilities	(2,596)	(3,864)	$ (1,777)
Carrying amounts [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets	17,055	21,910
Deferred tax liabilities	(19,651)	(25,774)
Deferred tax assets and liabilities	(2,596)	(3,864)
Carrying amounts [Member] \| Property, plant and equipment [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets	85
Deferred tax liabilities
Deferred tax assets and liabilities	85
Carrying amounts [Member] \| Intangible assets, excluding goodwill [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets
Deferred tax liabilities	(15,337)	(19,410)
Deferred tax assets and liabilities	(15,337)	(19,410)
Carrying amounts [Member] \| Trade and other receivables [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets	47	48
Deferred tax liabilities
Deferred tax assets and liabilities	47	48
Carrying amounts [Member] \| Convertible notes [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets
Deferred tax liabilities	(4,314)	(6,364)
Deferred tax assets and liabilities	(4,314)	(6,364)
Carrying amounts [Member] \| Employee benefits [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets	92	73
Deferred tax liabilities
Deferred tax assets and liabilities	92	73
Carrying amounts [Member] \| Other non-current liabilities [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets	23	8
Deferred tax liabilities
Deferred tax assets and liabilities	23	8
Carrying amounts [Member] \| Share Based Payments [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets		111
Deferred tax liabilities
Deferred tax assets and liabilities		111
Carrying amounts [Member] \| Tax loss carry forwards [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets	16,808	21,670
Deferred tax liabilities
Deferred tax assets and liabilities	16,808	21,670
Carrying amounts [Member] \| Set off [Member]
Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items]
Deferred tax assets	17,055	21,910
Deferred tax liabilities	(17,055)	(21,910)
Deferred tax assets and liabilities