Commitments - Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Nov. 30, 2019	Sep. 30, 2019	Jul. 01, 2019
Loss Contingencies [Line Items]
Right-of-use asset	$ 9,774
Present value of lease liabilities	11,234
ROU current liability	1,045
ROU non-current liability	10,189
Trevose PA headquarters
Loss Contingencies [Line Items]
Right-of-use asset	4,300
Present value of lease liabilities	$ 4,300
Operating lease term		8 years
ASU 2016-02 | Restatement
Loss Contingencies [Line Items]
Right-of-use asset				$ 7,900
Present value of lease liabilities				$ 7,900
ASU 2016-02 | Restatement | Cody Restructuring Plan
Loss Contingencies [Line Items]
Right-of-use asset			$ 1,200