Acquisition of Bellwether Bio - Narrative (Details) - USD ($)	1 Months Ended
	Apr. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Contingent liability from business acquisition		$ 1,135,000	$ 0
Bellweather Bio, Inc.
Business Acquisition [Line Items]
Total purchase consideration	$ 11,400,000
Cash paid upon closing	10,300,000
Contingent liability from business acquisition	1,100,000
Commercialization Milestones | Bellweather Bio, Inc.
Business Acquisition [Line Items]
Maximum contingent liability	10,000,000.0
Earn-Out Consideration | Bellweather Bio, Inc.
Business Acquisition [Line Items]
Maximum contingent liability	$ 10,000,000.0
Fair Value, Measurements, Recurring
Business Acquisition [Line Items]
Contingent liability from business acquisition		0
Fair Value, Measurements, Recurring | Level 2 | Bellweather Bio, Inc.
Business Acquisition [Line Items]
Contingent liability from business acquisition		$ 1,135,000