Commitments and contingencies - Additional information related to leases (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
|
|
Dec. 31, 2019 |
Dec. 31, 2019 |
Oct. 22, 2019 |
Aug. 01, 2019 |
| Leases |
|
|
|
|
| Right-to-use operating lease asset |
$ 4,731
|
$ 4,731
|
$ 18,425
|
$ 2,368
|
| Right-to-use financing lease asset |
47,528
|
47,528
|
|
|
| Total lease assets |
52,259
|
52,259
|
|
|
| Operating lease liabilities, current |
1,011
|
1,011
|
|
|
| Finance lease liabilities, current |
2,393
|
2,393
|
|
|
| Operating lease liabilities, non-current |
3,886
|
3,886
|
|
|
| Finance lease liabilities, non-current |
25,016
|
25,016
|
|
|
| Total lease liabilities |
32,306
|
32,306
|
|
|
| Cash paid for amounts included in the measurement of lease liabilities: |
|
|
|
|
| Operating cash flows from operating leases |
516
|
|
|
|
| Operating cash flows from finance leases |
623
|
|
|
|
| Financing cash flows from finance leases |
22
|
22
|
|
|
| Right-to-use asset obtained in exchange for new operating lease liabilities |
5,152
|
5,152
|
|
|
| Right-to-use asset obtained in exchange for new financing lease liabilities |
$ 48,224
|
$ 48,224
|
|
|
| Weighted-average remaining lease term - operating leases |
8 years 7 months 6 days
|
8 years 7 months 6 days
|
|
|
| Weighted-average remaining lease term - financing leases |
19 years 7 months 6 days
|
19 years 7 months 6 days
|
|
|
| Weighted-average discount rate - operating leases |
7.00%
|
7.00%
|
|
|
| Weighted-average discount rate - financing leases |
8.00%
|
8.00%
|
|
|