Aptose Biosciences Inc. Annual report pursuant to Section 13 and 15(d)

Note 14 - Income Taxes (Details Textual)

v3.22.1

Note 14 - Income Taxes (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	26.50%	26.50%
Foreign Tax Authority [Member] \| Canada Revenue Agency [Member]
Operating Loss Carryforwards, Total	$ 177.9
Foreign Tax Authority [Member] \| Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total	0.9
Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	19.0
Investment Tax Credit Carryforward [Member] \| Foreign Tax Authority [Member] \| Canada Revenue Agency [Member]
Tax Credit Carryforward, Amount	3.3
Investment Tax Credit Carryforward [Member] \| Domestic Tax Authority [Member] \| Canada Revenue Agency [Member]
Tax Credit Carryforward, Amount	$ 1.8

- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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