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Finance Expense - Summary of Finance Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Analysis of income and expense [abstract]
Interest expense	$ 3,266	$ 3,215	$ 424
(Gain)/loss on interest rate swaps	(422)	561	71
Debt issue cost	360	488	52
Total	$ 3,204	$ 4,264	$ 547

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- Definition

The amount of costs associated with financing activities of the entity.

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The amount of expense arising from interest.

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The amortization of debt issuance expenses during the reporting period which are recognised over the life of the financing arrangement to which such costs relate.

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The gains (losses) resulting from change in the fair value of interest rate swaps recognized in profit or loss.

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