Aptose Biosciences Inc. Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Stock-based Compensation - Vesting Terms of Options Granted (Details) (Parentheticals)

Note 11 - Stock-based Compensation - Vesting Terms of Options Granted (Details) (Parentheticals)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Options with Three Year Vesting [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage	50.00%	50.00%
Options with Three Year Vesting [Member] \| Share-Based Payment Arrangement, Tranche Two [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage	25.00%	25.00%
Options with Three Year Vesting [Member] \| Share-Based Payment Arrangement, Tranche Three [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage	25.00%	25.00%
Options with Four Year Vesting [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage	50.00%	50.00%
Options with Four Year Vesting [Member] \| Share-Based Payment Arrangement, Tranche Two [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage	16.67%	16.67%
Options with Four Year Vesting [Member] \| Share-Based Payment Arrangement, Tranche Three [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage	16.67%	16.67%
Options with Four Year Vesting [Member] \| Share-based Payment Arrangement, Tranche Four [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage	16.67%	16.67%