Summary of significant accounting policies (Tables)

12 Months Ended

Mar. 31, 2020

Summary of significant accounting policies

Schedule of estimated useful life of property, plant and equipment

	Estimated Useful life
Office equipment	5 years
Computer equipment	3 years
Plant, plant and laboratory equipment	5 years
Leasehold improvements	Lesser of lease term or 10 years

Summary of financial impact on consolidated balance sheet upon the adoption of ASU 2016-02 and the cumulative effect adjustment

	March 31, 2019		Adjustments		April 1, 2019
Property, plant, and equipment, net	$	12,159	$	(11,514)	$	645
Right-to-use asset	$	—	$	789	$	789
Long term prepaid rent	$	—	$	5,006	$	5,006
Lease liabilities, current	$	—	$	388	$	388
Lease liabilities, non-current	$	—	$	449	$	449
Accrued expenses	$	2,801	$	(24)	$	2,777
Deferred rent, net of current portion	$	24	$	(24)	$	—
Financing obligation	$	6,561	$	(6,561)	$	—
Accumulated deficit	$	(59,766)	$	93	$	(59,673)