20. Finance expense
Finance expense consists of the following:
| Year ended March 31, | ||||||||||||
| 2018 | 2017 | 2016 | ||||||||||
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Interest expense |
$ | 3,215 | $ | 424 | $ | 265 | ||||||
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Interest rate swaps |
561 | 71 | — | |||||||||
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Debt issue cost |
488 | 52 | 13 | |||||||||
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Total |
$ | 4,264 | $ | 547 | $ | 278 | ||||||
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