Summary of significant accounting policies (Tables)

12 Months Ended

Sep. 30, 2020

Schedule Of Estimated Lives of Property And Equipment

Estimated lives of property and equipment are as follows:

Laboratory equipment	5 Years
Furniture, fixtures and other equipment	5 Years
Computer equipment	3 Years
Computer software	3 Years
Leasehold improvements	Lesser of useful life or ‎facilities’ lease term.

Summary of Cash, Cash Equivalents and Restricted Cash

	September 30,
(In thousands)	2020		2019		2018
Cash and cash equivalents	$	93,667	$	46,735	$	80,757
Restricted cash, non-current		579		579		579
Restricted cash, current (within prepaid expenses and other current assets)		—		84		201
Total cash, cash equivalents and restricted cash	$	94,246	$	47,398	$	81,537

Sales Revenue, Net [Member]

Schedule of concentration of risk

Two customers accounted for more than 10% of total revenues as follows:  

	Year ended September 30,
	2020			2019			2018
Customer A		12	%		17	%		34	%
Customer B		10	%		—			—

Accounts Receivable [Member]

Schedule of concentration of risk

One customer accounted for greater than 10% of net accounts receivable as follows:

	September 30,
	2020			2019
Customer A		*			13	%
Customer B		36	%		—

* Represents less than 10%.