Note 4 - Summary of Significant Accounting Policies (Details Textual)	1 Months Ended	3 Months Ended		9 Months Ended			12 Months Ended
	Jan. 31, 2019 AUD ($)	Sep. 30, 2020 AUD ($)	Sep. 30, 2019 AUD ($)	Sep. 30, 2020 USD ($) shares	Sep. 30, 2020 AUD ($)	Sep. 30, 2019 AUD ($)	Dec. 31, 2019 AUD ($)	Dec. 31, 2017	Sep. 30, 2020 AUD ($) $ / shares shares	Jan. 01, 2020 AUD ($)	Dec. 31, 2019 USD ($) shares	Dec. 31, 2019 CAD ($) shares	Dec. 31, 2019 AUD ($) $ / shares shares	Nov. 01, 2019 USD ($)	Sep. 18, 2019 USD ($)	Dec. 31, 2018 CAD ($)	Dec. 31, 2018 AUD ($)
Short-term Investment, Maturity Period, Minimum (Month)				90 days	90 days
Short-term Investment, Maturity Period, Maximum (Month)				1 year	1 year
Impairment of Long-Lived Assets Held-for-use					$ 2,574,709		$ 2,574,709
Government Grant Netted Against Property, Plant and Equipment													$ 360,818				$ 360,818
Expected Marketing Support Payment				$ 2,048,602
Operating Loss Carryforwards, Total													15,055,938				0
Deferred Assets, Non-refundable Research and Development Tax Offset													3,374,776				$ 3,374,776
Asset Retirement Obligations, Noncurrent, Total									$ 2,696,100				2,600,000
Contract with Customer, Liability, Revenue Recognized	$ 658,675
Prepaid Expense, Current, Total									297,227				135,764
Research and Development Tax Incentive Income, Refundable Tax Offset, Percentage				43.50%	43.50%
Research and Development Tax Incentive Income, Maximum Aggregated Turnover to Refundable Tax Offset					$ 20,000,000
Research and Development Tax Incentive Income, Non-refundable Tax Offset, Percentage				38.50%	38.50%
Research and Development Tax Incentive Income, Minimum Aggregated Turnover to Non-refundable Tax Offset					$ 20,000,000
Research and Development Arrangement, Contract to Perform for Others, Compensation Earned		$ 493,297	$ 437,516		1,679,558	$ 1,764,463
Foreign Currency Transaction Gain (Loss), before Tax, Total		(89,978)	874,253		(13,630)	1,124,075
Loss Contingency Accrual, Ending Balance									0				0
Long-term Purchase Commitment, Amount					1,367,344		$ 220,569
Business Combination, Contingent Consideration, Liability, Current				$ 1,500,000					$ 2,110,298		$ 1,500,000		$ 2,141,022
Operating Lease, Impairment Loss					0
Lessee, Operating Lease, Renewal Term (Year)				3 years					3 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance (in AUD per share) | $ / shares									$ 0.29				$ 0.46
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in shares) | shares				8,993,450					8,993,450		2,544,286	2,544,286	2,544,286
Allocated Share Based Compensation Income (Expense)		$ (55,000)	(18,446)		$ (177,232)	422,434
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount									$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value			$ 0			$ 0			0
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay				9.50%	9.50%
Operating Lease, Liability, Total									$ 4,242,205
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset										$ 4,486,745
Operating Lease, Liability, Total										$ 4,486,745
Registered Retirement Savings Plan [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match				5.00%	5.00%
Employee Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Shares Issued upon Exercise (in shares) | shares				1					1
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)				10 years	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)				3 years	3 years
Zero Priced Employee Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance (in AUD per share) | $ / shares									$ 0
Restricted Stock [Member]
Share Based Compensation, Shares Granted to Employees Annually, Value Per Employee									$ 1,000
Share Based Compensation Arrangement by Share Based Payment, Award Trading Limitation Period (Year)				3 years	3 years
Siemens [Member]
Business Combination, Contingent Consideration, Liability, Current				$ 1,500,000											$ 1,500,000
Siemens [Member] | Xprecia Stride Strips [Member]
Contract with Customer, Liability, Revenue Recognized				639,324
Prepaid Expense, Current, Total				2,194,546					$ 3,178,198					$ 4,000,000
Increase (Decrease) in Prepaid Expense				$ (639,324)	$ (925,886)
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total											$ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				21.00%	21.00%			34.00%
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount					$ 0
Canada Revenue Agency [Member]
Operating Loss Carryforwards, Total												$ 385,235				$ 738,848
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)				1 year 120 days					1 year 120 days
Minimum [Member] | Deferred Profit Sharing Plan [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match				1.00%	1.00%
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)				3 years					3 years
Maximum [Member] | Deferred Profit Sharing Plan [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match				2.00%	2.00%
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)				3 years	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)				10 years	10 years