Commitments and Contingencies	12 Months Ended
Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies As of March 31, 2020, the Company had entered into commitments under the Oxford Agreement (see Note 3), the UMMS Agreement (see Note 3), the Loan Agreement (see Note 7), the services agreements with RSI and RSG (see Note 8(A)), and agreements to rent office space. In addition, the Company has entered into services agreements with third parties for pharmaceutical manufacturing and research activities in the normal course of business, which can generally be terminated by the Company with 30 days written notice, unless otherwise indicated. See Note 5 for information regarding rent expense incurred, and remaining contractual rent obligations due, in connection with the Company's outstanding contractual rent obligations. In June 2019, the Company entered into a manufacturing services agreement with a third-party for the manufacture of cGMP grade viral vector, which can be terminated without cause by the Company with six months written notice. Under the terms of this agreement, the Company is committed to pay a minimum of approximately $1.4 million for manufacturing services through December 2020, which remains outstanding at March 31, 2020. The Company has the right to terminate the Oxford Agreement at any time upon two months' advance written notice prior to the first commercial sale of a product, or for a specified period of advance written notice after the first commercial sale of a product. Either party may terminate the Oxford Agreement for the other party's uncured material breach or with respect to a failure to make a required payment. The Company has the right to terminate the UMMS Agreement at any time upon 90 days' advance written notice to UMMS. Either party may terminate the UMMS Agreement for the other party's uncured material breach upon 60 days' advance written notice, including in the event that UMMS reasonably determines the Company has not fulfilled its diligence obligations.

Commitments and Contingencies

As of March 31, 2020, the Company had entered into commitments under the Oxford Agreement (see Note 3), the UMMS Agreement (see Note 3), the Loan Agreement (see Note 7), the services agreements with RSI and RSG (see Note 8(A)), and agreements to rent office space. In addition, the Company has entered into services agreements with third parties for pharmaceutical manufacturing and research activities in the normal course of business, which can generally be terminated by the Company with 30 days written notice, unless otherwise indicated. See Note 5 for information regarding rent expense incurred, and remaining contractual rent obligations due, in connection with the Company's outstanding contractual rent obligations.

In June 2019, the Company entered into a manufacturing services agreement with a third-party for the manufacture of cGMP grade viral vector, which can be terminated without cause by the Company with six months written notice. Under the terms of this agreement, the Company is committed to pay a minimum of approximately $1.4 million for manufacturing services through December 2020, which remains outstanding at March 31, 2020.

The Company has the right to terminate the Oxford Agreement at any time upon two months' advance written notice prior to the first commercial sale of a product, or for a specified period of advance written notice after the first commercial sale of a product. Either party may terminate the Oxford Agreement for the other party's uncured material breach or with respect to a failure to make a required payment.

The Company has the right to terminate the UMMS Agreement at any time upon 90 days' advance written notice to UMMS. Either party may terminate the UMMS Agreement for the other party's uncured material breach upon 60 days' advance written notice, including in the event that UMMS reasonably determines the Company has not fulfilled its diligence obligations.