Commitments and contingencies (Tables)

6 Months Ended

Sep. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

Schedule of variable lease components

The table below presents the lease-related costs which are included in the consolidated statements of operations for the three months ended September 30, 2024 and 2023:

	Three Months Ended September 30,				Six Months Ended September 30,
	2024		2023		2024		2023
Lease cost
Finance lease costs:
Amortization of right-to-use asset	$	607	$	607	$	1,214	$	1,214
Interest on lease liabilities	531		542		1,065		1,086
Operating lease costs	285		281		566		561
Total lease cost	$	1,423	$	1,430	$	2,845	$	2,861

The following table summarizes the classification of lease costs in the consolidated statement of operations for the three months ended September 30, 2024 and 2023 as follows:

	Three Months Ended September 30,				Six Months Ended September 30,
	2024		2023		2024		2023
Finance Lease Costs
Research and development	$	607	$	607	$	1,214	$	1,214
Other income (expense)	531		542		1,065		1,086
Operating Lease Costs
Research and development	229		228		458		457
Selling, general and administrative	56		53		108		104
Total lease cost	$	1,423	$	1,430	$	2,845	$	2,861

The following table provides lease disclosure for the three months ended September 30, 2024 and 2023:

	Six Months Ended September 30,
	2024				2023
Other information
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	583			$	528
Operating cash flows from finance leases	$	1,065			$	1,086
Financing cash flows from finance leases	$	277			$	217
Right-to-use asset obtained in exchange for new operating lease liabilities	$	—			$	—
Weighted-average remaining lease term - operating leases	5.2			years	6.1			years
Weighted-average remaining lease term - financing leases	14.8			years	15.8			years
Weighted-average discount rate - operating leases	10.4		%		10.2		%
Weighted-average discount rate - financing leases	8.3		%		8.3		%

Schedule of the maturity of company's lease liabilities

The following table summarizes the maturity of the Company's lease liabilities on an undiscounted cash flow basis by fiscal year and a reconciliation to the operating and financing lease liabilities recognized on its balance sheet as of September 30, 2024:

	September 30, 2024
	Operating leases		Financing lease		Total
2025 (remaining six months)	$	599	$	1,376	$	1,975
2026	1,203		2,799		4,002
2027	1,167		2,883		4,050
2028	1,112		2,969		4,081
2029	1,025		3,058		4,083
Thereafter	966		31,995		32,961
Total lease payments	6,072		45,080		51,152
Less: interest	1,371		19,229		20,600
Total lease liabilities	$	4,701	$	25,851	$	30,552

Schedule of additional information related to leases

The following table provides lease disclosure as of September 30, 2024 and March 31, 2024:

	September 30, 2024		March 31, 2024
Leases
Right-to-use operating lease asset	$	4,417	$	4,635
Right-to-use finance lease asset	36,022		37,237
Total lease assets	$	40,439	$	41,872
Operating lease liabilities, current	$	1,199	$	1,161
Finance lease liabilities, current	2,758		2,718
Operating lease liabilities, non-current	3,502		3,771
Finance lease liabilities, non-current	23,093		23,410
Total lease liabilities	$	30,552	$	31,060