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Loss Per Share - Computation of Basic and Diluted Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Loss attributable to ordinary shareholders (including Class B shareholders)	$ (55,639)	$ (447,781)	$ (167,759)
Weighted average number of ordinary shares (including Class B shares) outstanding used in computing basic loss per share	106,797,245	105,190,507	103,989,421
Weighted average number of ordinary shares (including Class B shares) outstanding used in computing dilutive loss per share	106,797,245	105,190,507	103,989,421
Basic	$ (0.52)	$ (4.26)	$ (1.61)
Diluted	$ (0.52)	$ (4.26)	$ (1.61)

X

- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

+ References

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- Definition

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

+ References

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

+ References

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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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