Government Programs (Details)		1 Months Ended		3 Months Ended				9 Months Ended
	May 31, 2017 USD ($)	Sep. 30, 2018 USD ($)	Jul. 31, 2016 USD ($)	Sep. 30, 2018 AUD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 AUD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 AUD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 AUD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2017 AUD ($)	Dec. 31, 2017 USD ($)
Government Programs
Reduction of research and development expenses related to tax							$ 103,000				$ 123,000
Research and development tax incentive receivable				$ 1,600,000				$ 1,600,000				$ 1,155,000	$ 1,700,000	$ 1,347,000
SBIR Grant
Government Programs
Reduction of research and development expenses related to tax					$ 229,000				$ 354,000
Research and development grants	$ 1,300,000	$ 1,500,000	$ 219,000
Australian Taxation Office
Government Programs
Reduction of research and development expenses related to tax				$ 409,000	$ 297,000	$ 493,000	$ 389,000	$ 1,600,000	$ 1,300,000	$ 1,100,000	$ 900,000
Overseas Findings | Australian Taxation Office
Government Programs
Grants receivable												$ 229,000		$ 58,000