Collaboration Agreements (Tables)

12 Months Ended

Sep. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Royalty Tiers Associated with Cumulative Calendar Year Net Sales Allocated to Each Royalty-bearing Product

The following table details the royalty tiers associated with cumulative calendar year net sales allocated to each royalty-bearing product as provided in the AbbVie Agreement:

Calendar Year Net Sales	Royalty Tier
(in thousands)	(%)
up to $500,000	10%
from $500,000 up to $750,000	12%
from $750,000 up to $1,000,000	14%
from $1,000,000 up to $2,500,000	17%
greater than or equal to $2,500,000	20%