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Investments - Summary of Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Categories of financial assets [abstract]
Investments in marketable securities and mutual funds	$ 99,954	$ 87,652
Investments in FMPs		96
Investment in fixed deposits	21,548	24,673
Current investments	120,960	111,992
Non-current investment	542	429
Total	$ 121,502	$ 112,421

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- Definition

The amount of current investments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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]

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- Definition

The amount of non-current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Non-current financial assets]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of short-term deposits held by the entity that are not classified as cash equivalents. [Refer: Cash equivalents]

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Fixed maturity plans ("FMPs") represent investments in mutual fund schemes wherein the mutual fund issuer has invested these funds in certificate of deposits with banks in India. These investments are financial assets designated as fair value through profit or loss.

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Marketable securities represent liquid investments and are acquired principally for the purpose of earning daily dividend income. Investments in mutual funds represent investments in mutual fund schemes wherein the mutual fund issuer has invested these funds in enterprise development funds. These investments are current non-derivative financial assets that are designated as available for sale.

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