SHARE-BASED PAYMENTS, Summary of Options and Performance Rights Granted as Share-Based Payments (Details) | 12 Months Ended |
Jun. 30, 2020AUD ($)shares$ / shares | Jun. 30, 2019AUD ($)shares$ / shares | Jun. 30, 2018AUD ($)shares$ / shares |
Number of outstanding instruments [Abstract] | | | |
Outstanding at beginning of year (in shares) | 84,700,000 | 81,200,000 | 58,650,000 |
Options granted during the year (in shares) | 25,950,000 | 4,950,000 | 28,650,000 |
Options exercised during the year (in shares) | (31,500,000) | 0 | (5,000,000) |
Options expired during the year (in shares) | (25,475,000) | 0 | 0 |
Rights granted during the year (in shares) | 7,500,000 | 0 | 0 |
Rights lapsed during the year (in shares) | (50,000) | (1,100,000) | (1,100,000) |
Rights converted during the year (in shares) | (2,500,000) | (350,000) | 0 |
Outstanding at end of year (in shares) | 58,625,000 | 84,700,000 | 81,200,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Outstanding at beginning of year (in dollars per share) | $ / shares | $ 0.14 | $ 0.13 | $ 0.10 |
Options granted during the year (in dollars per share) | $ / shares | 0.16 | 0.22 | 0.17 |
Options exercised during the year (in dollars per share) | $ / shares | 0.08 | 0 | 0.05 |
Options expired during the year (in dollars per share) | $ / shares | 0.17 | 0 | 0 |
Rights granted during the year (in dollars per share) | $ / shares | 0 | 0 | 0 |
Rights lapsed during the year (in dollars per share) | $ / shares | 0 | 0 | 0 |
Rights converted during the year (in dollars per share) | $ / shares | 0 | 0 | 0 |
Outstanding at end of year (in dollars per share) | $ / shares | $ 0.15 | $ 0.14 | $ 0.13 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 25,950,000 | 4,950,000 | 28,650,000 |
Number (in shares) | 7,500,000 | 0 | 0 |
Exercise price (in dollars per share) | $ / shares | $ 0.16 | $ 0.22 | $ 0.17 |
Exercise price (in dollars per share) | $ / shares | $ 0 | $ 0 | $ 0 |
Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options exercised during the year (in shares) | | 0 | |
Incentive options and performance rights [Abstract] | | | |
Fair value (in dollars per share) | $ | $ 0.015 | $ 0.064 | $ 0.051 |
Rights [Member] | | | |
Incentive options and performance rights [Abstract] | | | |
Fair Value (in dollars per share) | $ | $ 0 | $ 0 | $ 0.187 |
Series 1 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | 1,000,000 | 375,000 | 6,000,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | $ 0.15 | $ 0.25 | $ 0.10 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,000,000 | 375,000 | 6,000,000 |
Grant date | December 17, 2019 | July 13, 2018 | July 10, 2017 |
Expiry date | Jun. 30, 2020 | Jun. 30, 2020 | Jul. 10, 2020 |
Exercise price (in dollars per share) | $ / shares | $ 0.15 | $ 0.25 | $ 0.10 |
Fair value (in dollars per share) | $ | $ 0.0110 | $ 0.0630 | $ 0.0480 |
Series 2 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | 1,200,000 | 375,000 | 6,000,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | $ 0.20 | $ 0.35 | $ 0.12 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,200,000 | 375,000 | 6,000,000 |
Grant date | December 17, 2019 | July 13, 2018 | July 10, 2017 |
Expiry date | Jun. 30, 2020 | Dec. 31, 2020 | Jan. 10, 2021 |
Exercise price (in dollars per share) | $ / shares | $ 0.20 | $ 0.35 | $ 0.12 |
Fair value (in dollars per share) | $ | $ 0.0050 | $ 0.0590 | $ 0.0470 |
Series 3 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | 12,000,000 | 500,000 | 6,000,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | $ 0.16 | $ 0.25 | $ 0.16 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 12,000,000 | 500,000 | 6,000,000 |
Grant date | March 18, 2020 | August 1, 2018 | July 10, 2017 |
Expiry date | Dec. 31, 2022 | Jun. 30, 2020 | Jul. 10, 2021 |
Exercise price (in dollars per share) | $ / shares | $ 0.16 | $ 0.25 | $ 0.16 |
Fair value (in dollars per share) | $ | $ 0.0160 | $ 0.0640 | $ 0.0460 |
Series 4 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | 8,500,000 | 500,000 | 6,000,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | $ 0.16 | $ 0.35 | $ 0.24 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 8,500,000 | 500,000 | 6,000,000 |
Grant date | March 19, 2020 | August 1, 2018 | July 10, 2017 |
Expiry date | Dec. 31, 2022 | Dec. 31, 2020 | Jul. 10, 2022 |
Exercise price (in dollars per share) | $ / shares | $ 0.16 | $ 0.35 | $ 0.24 |
Fair value (in dollars per share) | $ | $ 0.0130 | $ 0.0580 | $ 0.0450 |
Series 5 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | 250,000 | 1,500,000 | 150,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | $ 0.16 | $ 0.15 | $ 0.15 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 250,000 | 1,500,000 | 150,000 |
Grant date | March 20, 2020 | May 7, 2019 | October 13, 2017 |
Expiry date | Dec. 31, 2022 | Jun. 30, 2021 | Jun. 30, 2020 |
Exercise price (in dollars per share) | $ / shares | $ 0.16 | $ 0.15 | $ 0.15 |
Fair value (in dollars per share) | $ | $ 0.0160 | $ 0.0680 | $ 0.1030 |
Series 6 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | 1,500,000 | 1,500,000 | 150,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | $ 0.16 | $ 0.20 | $ 0.20 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,500,000 | 1,500,000 | 150,000 |
Grant date | March 27, 2020 | May 7, 2019 | October 13, 2017 |
Expiry date | Dec. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2020 |
Exercise price (in dollars per share) | $ / shares | $ 0.16 | $ 0.20 | $ 0.20 |
Fair value (in dollars per share) | $ | $ 0.0180 | $ 0.0680 | $ 0.0910 |
Series 7 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | 1,500,000 | 100,000 | 150,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | $ 0.16 | $ 0.25 | $ 0.25 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,500,000 | 100,000 | 150,000 |
Grant date | April 17, 2020 | October 1, 2018 | October 13, 2017 |
Expiry date | Dec. 31, 2022 | Jun. 30, 2020 | Jun. 30, 2020 |
Exercise price (in dollars per share) | $ / shares | $ 0.16 | $ 0.25 | $ 0.25 |
Fair value (in dollars per share) | $ | $ 0.0190 | $ 0.0260 | $ 0.0810 |
Series 8 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | 100,000 | 1,050,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | $ 0.35 | $ 0.25 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | 100,000 | 1,050,000 |
Grant date | | October 1, 2018 | January 1, 2018 |
Expiry date | | Dec. 31, 2020 | Jun. 30, 2020 |
Exercise price (in dollars per share) | $ / shares | | $ 0.35 | $ 0.25 |
Fair value (in dollars per share) | $ | | $ 0.0240 | $ 0.0910 |
Series 8 [Member] | Rights [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Rights granted during the year (in shares) | 1,500,000 | | |
Weighted average exercise price of instruments [Abstract] | | | |
Rights granted during the year (in dollars per share) | $ / shares | $ 0 | | |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,500,000 | | |
Grant date | March 18, 2020 | | |
Expiry date | Dec. 31, 2020 | | |
Exercise price (in dollars per share) | $ / shares | $ 0 | | |
Fair Value (in dollars per share) | $ | $ 0.0700 | | |
Series 9 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 1,050,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.35 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 1,050,000 |
Grant date | | | January 1, 2018 |
Expiry date | | | Dec. 31, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.35 |
Fair value (in dollars per share) | $ | | | $ 0.0850 |
Series 9 [Member] | Rights [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Rights granted during the year (in shares) | 1,000,000 | | |
Weighted average exercise price of instruments [Abstract] | | | |
Rights granted during the year (in dollars per share) | $ / shares | $ 0 | | |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,000,000 | | |
Grant date | March 19, 2020 | | |
Expiry date | Dec. 31, 2020 | | |
Exercise price (in dollars per share) | $ / shares | $ 0 | | |
Fair Value (in dollars per share) | $ | $ 0.0630 | | |
Series 10 [Member] | Rights [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Rights granted during the year (in shares) | 1,500,000 | | 150,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Rights granted during the year (in dollars per share) | $ / shares | $ 0 | | $ 0 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,500,000 | | 150,000 |
Grant date | March 18, 2020 | | January 1, 2018 |
Expiry date | Dec. 31, 2021 | | Dec. 31, 2018 |
Exercise price (in dollars per share) | $ / shares | $ 0 | | $ 0 |
Fair Value (in dollars per share) | $ | $ 0.0700 | | $ 0.1900 |
Series 11 [Member] | Rights [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Rights granted during the year (in shares) | 1,000,000 | | 150,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Rights granted during the year (in dollars per share) | $ / shares | $ 0 | | $ 0 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,000,000 | | 150,000 |
Grant date | March 19, 2020 | | January 1, 2018 |
Expiry date | Dec. 31, 2021 | | Dec. 31, 2019 |
Exercise price (in dollars per share) | $ / shares | $ 0 | | $ 0 |
Fair Value (in dollars per share) | $ | $ 0.0630 | | $ 0.1900 |
Series 12 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 100,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.25 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 100,000 |
Grant date | | | February 26, 2018 |
Expiry date | | | Jun. 30, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.25 |
Fair value (in dollars per share) | $ | | | $ 0.0680 |
Series 12 [Member] | Rights [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Rights granted during the year (in shares) | 1,500,000 | | |
Weighted average exercise price of instruments [Abstract] | | | |
Rights granted during the year (in dollars per share) | $ / shares | $ 0 | | |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,500,000 | | |
Grant date | March 18, 2020 | | |
Expiry date | Dec. 31, 2022 | | |
Exercise price (in dollars per share) | $ / shares | $ 0 | | |
Fair Value (in dollars per share) | $ | $ 0.0700 | | |
Series 13 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 100,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.35 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 100,000 |
Grant date | | | February 26, 2018 |
Expiry date | | | Dec. 31, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.35 |
Fair value (in dollars per share) | $ | | | $ 0.0630 |
Series 13 [Member] | Rights [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Rights granted during the year (in shares) | 1,000,000 | | |
Weighted average exercise price of instruments [Abstract] | | | |
Rights granted during the year (in dollars per share) | $ / shares | $ 0 | | |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | 1,000,000 | | |
Grant date | March 19, 2020 | | |
Expiry date | Dec. 31, 2022 | | |
Exercise price (in dollars per share) | $ / shares | $ 0 | | |
Fair Value (in dollars per share) | $ | $ 0.0630 | | |
Series 14 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 100,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.25 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 100,000 |
Grant date | | | March 12, 2018 |
Expiry date | | | Jun. 30, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.25 |
Fair value (in dollars per share) | $ | | | $ 0.0600 |
Series 15 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 100,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.35 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 100,000 |
Grant date | | | March 12, 2018 |
Expiry date | | | Dec. 31, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.35 |
Fair value (in dollars per share) | $ | | | $ 0.0560 |
Series 16 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 500,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.25 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 500,000 |
Grant date | | | May 7, 2018 |
Expiry date | | | Jun. 30, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.25 |
Fair value (in dollars per share) | $ | | | $ 0.0550 |
Series 17 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 500,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.35 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 500,000 |
Grant date | | | May 7, 2018 |
Expiry date | | | Dec. 31, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.35 |
Fair value (in dollars per share) | $ | | | $ 0.0510 |
Series 18 [Member] | Rights [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Rights granted during the year (in shares) | | | 50,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Rights granted during the year (in dollars per share) | $ / shares | | | $ 0 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 50,000 |
Grant date | | | May 29, 2018 |
Expiry date | | | Dec. 31, 2018 |
Exercise price (in dollars per share) | $ / shares | | | $ 0 |
Fair Value (in dollars per share) | $ | | | $ 0.1790 |
Series 19 [Member] | Rights [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Rights granted during the year (in shares) | | | 50,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Rights granted during the year (in dollars per share) | $ / shares | | | $ 0 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 50,000 |
Grant date | | | May 29, 2018 |
Expiry date | | | Dec. 31, 2019 |
Exercise price (in dollars per share) | $ / shares | | | $ 0 |
Fair Value (in dollars per share) | $ | | | $ 0.1790 |
Series 20 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 150,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.25 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 150,000 |
Grant date | | | June 15, 2018 |
Expiry date | | | Jun. 30, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.25 |
Fair value (in dollars per share) | $ | | | $ 0.0810 |
Series 21 [Member] | Options [Member] | | | |
Number of outstanding instruments [Abstract] | | | |
Options granted during the year (in shares) | | | 150,000 |
Weighted average exercise price of instruments [Abstract] | | | |
Options granted during the year (in dollars per share) | $ / shares | | | $ 0.35 |
Incentive options and performance rights [Abstract] | | | |
Number (in shares) | | | 150,000 |
Grant date | | | June 15, 2018 |
Expiry date | | | Dec. 31, 2020 |
Exercise price (in dollars per share) | $ / shares | | | $ 0.35 |
Fair value (in dollars per share) | $ | | | $ 0.0750 |