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Government Programs (Details) $ in Thousands, $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2021 AUD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2020 AUD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2021 AUD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2020 AUD ($)	Sep. 30, 2021 AUD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 AUD ($)
Government Programs
Research and development tax incentive receivable	$ 1,871				$ 1,871					$ 1,084
SBIR Grant
Government Programs
Reduction to research and development expenses	0		$ 0		100		$ 300
Grants receivable	0				0					0
Australian
Government Programs
Reduction to research and development expenses	500	$ 0.6	$ 300	$ 0.4	2,200	$ 2.9	$ 500	$ 0.8
Overseas Findings | Australian
Government Programs
Research and development tax incentive receivable	$ 1,900				$ 1,900				$ 2.6	$ 1,100	$ 1.4

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