Property, plant and equipment, net (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
|
|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Apr. 01, 2019 |
Mar. 31, 2019 |
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , gross |
$ 6,249
|
|
$ 6,249
|
|
|
$ 12,563
|
| Less: Accumulated depreciation and amortization |
(595)
|
|
(595)
|
|
|
(404)
|
| Property, plant and equipment , net |
5,654
|
|
5,654
|
|
|
12,159
|
| Depreciation and amortization expense |
107
|
$ 37
|
191
|
$ 106
|
|
|
| Financing obligation |
|
|
|
|
|
6,561
|
| ASU 2016-02 |
|
|
|
|
|
|
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , net |
|
|
|
|
$ 645
|
|
| Long term prepaid rent |
|
|
|
|
5,006
|
|
| ASU 2016-02 | Adjustments |
|
|
|
|
|
|
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , net |
|
|
|
|
(11,514)
|
|
| Financing obligation |
|
|
|
|
(6,561)
|
|
| Long term prepaid rent |
|
|
|
|
$ 5,006
|
|
| Construction in progress |
|
|
|
|
|
|
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , gross |
726
|
|
726
|
|
|
124
|
| Plant and laboratory equipment |
|
|
|
|
|
|
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , gross |
3,453
|
|
3,453
|
|
|
584
|
| Leasehold improvements |
|
|
|
|
|
|
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , gross |
368
|
|
368
|
|
|
154
|
| Property, plant and equipment , net |
|
|
|
|
|
11,514
|
| Computer equipment |
|
|
|
|
|
|
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , gross |
981
|
|
981
|
|
|
138
|
| Office equipment |
|
|
|
|
|
|
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , gross |
$ 721
|
|
$ 721
|
|
|
49
|
| Build-to-suit lease asset |
|
|
|
|
|
|
| Property, plant and equipment, net |
|
|
|
|
|
|
| Property, plant and equipment , gross |
|
|
|
|
|
$ 11,514
|