CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (53,772)	$ (49,555)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	9,475	8,846
Depreciation and amortization	736	621
Net amortization of premiums and discounts on short-term investments	(2,788)	(4,091)
Noncash interest expense	383	257
Unrealized foreign currency transaction (gains) losses	(406)	(1,374)
Changes in operating assets and liabilities:
Research and development incentives receivable	(437)	(393)
Prepaid expenses and other current assets	1,817	(1,577)
Operating lease, right-of-use-asset	164	148
Finance lease, right-of-use-asset	607	607
Accounts payable	(1,615)	(816)
Accrued expenses and other current liabilities	(3,160)	(1,215)
Operating lease liabilities	(171)	(153)
Other non-current liabilities	0	107
Net cash used in operating activities	(49,167)	(48,588)
Cash flows from investing activities:
Purchases of property, plant and equipment and software capitalization	(1,669)	(449)
Purchase of short-term investments	(105,475)	(169,330)
Proceeds from sales and maturities of short-term investments	136,910	177,140
Net cash provided by investing activities	29,766	7,361
Cash flows from financing activities:
Proceeds from issuance of common stock in connection with private placement, net of placement agent fees and offering costs	48,204	0
Proceeds from issuance of prefunded warrants to purchase common stock, net of placement agent fees and offering costs	48,500	0
Principal payment of finance lease obligation	(134)	(104)
Proceeds from exercise of stock options and pre-funded warrants	67	1,209
Net cash provided by financing activities	96,637	1,105
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(35)	13
Net increase (decrease) in cash, cash equivalents and restricted cash	77,201	(40,109)
Cash, cash equivalents and restricted cash at beginning of period	76,157	148,226
Cash, cash equivalents and restricted cash at end of period	153,358	108,117
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	1,052	653
Supplemental disclosure of non-cash investing and financing activities:
Purchases of property and equipment included in accounts payable and accrued expenses	$ 87	$ 412