Commitments and Contingencies	9 Months Ended
Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation The Company is involved in various lawsuits, claims and other legal matters from time to time that arise in the ordinary course of conducting business. The Company records a liability when a particular contingency is probable and estimable. In February 2021, a putative securities class action complaint was filed against the Company and certain of its current and former officers in the U.S. District Court for the Eastern District of New York on behalf of a class consisting of those who acquired the Company’s securities between October 2, 2019 and February 1, 2021. The complaint alleges that the Company and certain of its officers violated Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, by making false and misleading statements regarding the safety of batoclimab and seeks unspecified monetary damages on behalf of the putative class and an award of costs and expenses, including reasonable attorneys’ fees. On December 29, 2021, the U.S. District Court appointed a lead plaintiff. On February 1, 2022, the lead plaintiff filed an amended complaint adding RSL and the Company’s directors and underwriters as defendants, and asserting additional claims under Section 11, 12(a)(2), and 15 of the Securities Act of 1933 on behalf of a putative class consisting of those who purchased or otherwise acquired the Company’s securities pursuant and/or traceable to the Company’s follow-on public offering on or about September 2, 2020. On March 15, 2022, the lead plaintiff filed a further amended complaint. The Company and other defendants served motions to dismiss the amended complaint on May 27, 2022. The fully briefed motion to dismiss, including defendants’ opening briefs, lead plaintiff’s opposition, and defendants’ replies were filed with the court on September 9, 2022. No hearing date has been set. The Company intends to continue to vigorously defend the case and has not recorded a liability related to this lawsuit because, at this time, the Company is unable to reasonably estimate possible losses or determine whether an unfavorable outcome is either probable or remote. Commitments During the year ended March 31, 2022, ISG entered into the PSA with Samsung to manufacture a certain quantity of batoclimab drug substance for, among other things, commercial sale, if approved. As of December 31, 2022, in connection with this agreement, the Company has a remaining minimum obligation to Samsung of approximately $33.1 million, of which $1.1 million is expected to be paid during the fiscal year ending March 31, 2023, $13.7 million is expected to be paid during the fiscal year ending March 31, 2024 and $18.3 million is expected to be paid during the fiscal year ending March 31, 2026. During the three and nine months ended December 31, 2022, the Company recorded $1.2 million and $2.9 million, respectively, of research and development expenses related to the PSA, of which $1.8 million was paid as of December 31, 2022. See Note 3 - Material Agreements for additional details. As of December 31, 2022, the Company did not have any other ongoing material contractual obligations for which cash flows were fixed and determinable. In the normal course of business, the Company enters into agreements with CROs for clinical trials and with vendors for nonclinical studies, manufacturing and other services and products for operating purposes, which agreements are generally cancellable by the Company at any time, subject to payment of remaining obligations under binding purchase orders and, in certain cases, nominal early-termination fees. These commitments are not deemed significant. There are certain contracts wherein the Company has a minimum purchase commitment, however, most of it is due and payable within one year. Contingencies The extent of the impact of COVID-19, geopolitical tensions and resulting global slowdown of economic activity, decades-high inflation, rising interest rates and a potential recession in the U.S. on the Company’s future operational and financial performance will depend on certain developments, including the duration and spread of the pandemic, including its variants, impact on employees and vendors, and impact on clinical trial sites and patients, all of which are uncertain and cannot be predicted. At this point, the extent to which these events may impact the Company’s future financial condition or results of operations is uncertain.

In February 2021, a putative securities class action complaint was filed against the Company and certain of its current and former officers in the U.S. District Court for the Eastern District of New York on behalf of a class consisting of those who acquired the Company’s securities between October 2, 2019 and February 1, 2021. The complaint alleges that the Company and certain of its officers violated Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, by making false and misleading statements regarding the safety of batoclimab and seeks unspecified monetary damages on behalf of the putative class and an award of costs and expenses, including reasonable attorneys’ fees. On December 29, 2021, the U.S. District Court appointed a lead plaintiff. On February 1, 2022, the lead plaintiff filed an amended complaint adding RSL and the Company’s directors and underwriters as defendants, and asserting additional claims under Section 11, 12(a)(2), and 15 of the Securities Act of 1933 on behalf of a putative class consisting of those who purchased or otherwise acquired the Company’s securities pursuant and/or traceable to the Company’s follow-on public offering on or about September 2, 2020. On March 15, 2022, the lead plaintiff filed a further amended complaint. The Company and other defendants served motions to dismiss the amended complaint on May 27, 2022. The fully briefed motion to dismiss, including defendants’ opening briefs, lead plaintiff’s opposition, and defendants’ replies were filed with the court on September 9, 2022. No hearing date has been set. The Company intends to continue to vigorously defend the case and has not recorded a liability related to this lawsuit because, at this time, the Company is unable to reasonably estimate possible losses or determine whether an unfavorable outcome is either probable or remote.

During the year ended March 31, 2022, ISG entered into the PSA with Samsung to manufacture a certain quantity of batoclimab drug substance for, among other things, commercial sale, if approved. As of December 31, 2022, in connection with this agreement, the Company has a remaining minimum obligation to Samsung of approximately $33.1 million, of which $1.1 million is expected to be paid during the fiscal year ending March 31, 2023, $13.7 million is expected to be paid during the fiscal year ending March 31, 2024 and $18.3 million is expected to be paid during the fiscal year ending March 31, 2026. During the three and nine months ended December 31, 2022, the Company recorded $1.2 million and $2.9 million, respectively, of research and development expenses related to the PSA, of which $1.8 million was paid as of December 31, 2022. See Note 3 - Material Agreements for additional details.

As of December 31, 2022, the Company did not have any other ongoing material contractual obligations for which cash flows were fixed and determinable. In the normal course of business, the Company enters into agreements with CROs for clinical trials and with vendors for nonclinical studies, manufacturing and other services and products for operating purposes, which agreements are generally cancellable by the Company at any time, subject to payment of remaining obligations under binding purchase orders and, in certain cases, nominal early-termination fees. These commitments are not deemed significant. There are certain contracts wherein the Company has a minimum purchase commitment, however, most of it is due and payable within one year.

The extent of the impact of COVID-19, geopolitical tensions and resulting global slowdown of economic activity, decades-high inflation, rising interest rates and a potential recession in the U.S. on the Company’s future operational and financial performance will depend on certain developments, including the duration and spread of the pandemic, including its variants, impact on employees and vendors, and impact on clinical trial sites and patients, all of which are uncertain and cannot be predicted. At this point, the extent to which these events may impact the Company’s future financial condition or results of operations is uncertain.