The net periodic cost recognized by the Company in respect of gratuity payments under the Company’s gratuity plans covering eligible employees of the Company in India, the Philippines and Sri Lanka is as follows:
| Year ended March 31, | ||||||||||||
| 2018 | 2017 | 2016 | ||||||||||
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Service cost |
$ | 1,917 | $ | 2,188 | $ | 1,765 | ||||||
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Past service cost |
538 | — | — | |||||||||
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Interest on the net defined benefit liability |
587 | 451 | 419 | |||||||||
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Net gratuity cost |
$ | 3,042 | $ | 2,639 | $ | 2,184 | ||||||
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