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Financial Instruments - Summary of Net Cash Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Disclosure of detailed information about financial instruments [abstract]
Cash and cash equivalents	$ 99,829	$ 69,803	$ 41,854	$ 32,448
Investments	121,502	112,421
Long term debt (includes current portion)	(89,900)	(118,000)
Net cash position	$ 131,431	$ 64,224

X

- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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- Definition

The amount of financial assets held for managing liquidity risk (for example, financial assets that are readily saleable or expected to generate cash inflows to meet cash outflows on financial liabilities). [Refer: Liquidity risk [member]; Financial assets; Financial liabilities]

+ References

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- Definition

The amount of investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method]

+ References

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The amount of outstanding borrowings that the entity is obligated to repay before netting off debt issuance cost.

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