Commitment and Contingencies - Contractual Obligations (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Purchase Obligations
Total	$ 3,959	[1]
2020	3,959	[1]
2021	0	[1]
2022	0	[1]
2023	0	[1]
2024	0	[1]
Thereafter	0	[1]
Total
Total	5,034
2020	4,244
2021	95
2022	80
2023	80
2024	70
Thereafter	465
License Agreements [Member]
Contractual obligations, Fiscal Year Maturity
Total	1,075	[2]
2020	285	[2]
2021	95	[2]
2022	80	[2]
2023	80	[2]
2024	70	[2]
Thereafter	$ 465	[2]

[1] Purchase obligations consist of non-cancelable purchase commitments to suppliers.

[2] Excludes future obligations pursuant to the cost-sharing arrangement under the Company's License Agreement with Roche. Amounts of such obligations, if any, cannot be determined at this time.