Commitments - Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Jul. 01, 2019
Loss Contingencies [Line Items]
Right-of-use asset	$ 6,015
Present value of lease liabilities	7,206
ROU current liability	1,848
ROU non-current liability	$ 5,358
Operating lease term	8 years
ASU 2016-02 | Restatement
Loss Contingencies [Line Items]
Right-of-use asset	$ 7,900		$ 7,900
Present value of lease liabilities	$ 7,900		$ 7,900
ASU 2016-02 | Restatement | Cody Restructuring Plan
Loss Contingencies [Line Items]
Right-of-use asset		$ 1,200