Subsequent Events	6 Months Ended
Subsequent Events	Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 6, 2022 (the “Closing Date”), the Company entered into a Loan and Security Agreement (the “Loan Agreement”) with Hercules Capital, Inc. (“Hercules”), in its capacity as administrative agent and collateral agent (the “Agent”) and as a lender, and certain other financial institutions that from time to time may become parties to the Loan Agreement as lenders (collectively, the “Lenders”). The Loan Agreement provides for term loans in an aggregate principal amount of up to $200.0 million under multiple tranches (the “Term Loan Facility”), available to be drawn during the specified time period at the Company's option, which includes (i) an initial term loan advance of $30.0 million on the Closing Date with an additional $30.0 million available to be drawn on or prior to September 30, 2023, (ii) subject to the Company achieving certain performance milestones, additional term loan advances in an aggregate principal amount of up to $115.0 million during the term of the Term Loan Facility, and (iii) subject to approval by the applicable Lenders’ investment committees in their discretion, up to two term loan advances in an aggregate principal amount of up to $25.0 million, on or prior to the end of the interest-only period referred to below. The Company has agreed to use the proceeds of the Term Loan Facility for working capital and general corporate purposes. The Term Loan Facility will mature on October 1, 2027 (the “Maturity Date”). The outstanding principal balance of the Term Loan Facility bears interest payable in cash at a floating rate per annum equal to the greater of (i) 7.25% and (ii) the sum of the Prime Rate (which is capped at 7.25%) and 1.75%. In addition, the principal balance of the Term Loan Facility will bear “payment-in-kind” interest at the rate of 1.50% (“PIK Interest”), which PIK Interest will be added to the outstanding principal balance of the Term Loan Facility on each interest payment date. Accrued interest is payable monthly following the funding of each term loan advance. The Company may make payments of interest only, without any loan amortization payments, for a period of forty-eight (48) months following the Closing Date, which interest-only period may be extended to (i) the date which is fifty-four (54) months following the Closing Date if certain performance milestones have been achieved, and (ii) the Maturity Date if certain additional performance milestones have been achieved. At the end of the interest-only period, the Company is required to begin repayment of the outstanding principal of the Term Loan Facility in equal monthly installments (or, in a single installment, if the interest-only period has been extended to the Maturity Date). The Loan Agreement contains customary facility fees, events of default and representations, warranties and affirmative and negative covenants, including a financial covenant requiring us to maintain certain levels of cash in accounts subject to a control agreement in favor of the Agent (the “Unrestricted Cash”) at all times commencing on January 1, 2024. In addition, the Loan Agreement also contains a financial covenant that beginning on the later of (i) July 1, 2024 and (ii) the date on which the aggregate outstanding principal amount of the Term Loan Facility is equal to or greater than $100.0 million, the Company is required to satisfy one of the following requirements: (1) achieve a minimum amount of trailing three-month net product revenue tested on a monthly basis, (2) maintain a market capitalization in excess of $1.2 billion and Unrestricted Cash in an amount no less than 50% of the outstanding amount under the Term Loan Facility, or (3) maintain Unrestricted Cash in an amount no less than 85% of the outstanding amount under the Term Loan Facility.