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

Note 7 - Fair Value Measurements and Financial Instruments - Assets Measured on a Recurring Basis (Details)

Note 7 - Fair Value Measurements and Financial Instruments - Assets Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Assets, fair value	$ 54,519	$ 78,834
Fair Value, Inputs, Level 1 [Member]
Assets, fair value	0	0
Fair Value, Inputs, Level 2 [Member]
Assets, fair value	54,519	78,834
Fair Value, Inputs, Level 3 [Member]
Assets, fair value	0	0
Money Market Accounts [Member]
Assets, fair value	165	17,974
Money Market Accounts [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets, fair value	0	0
Money Market Accounts [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets, fair value	165	17,974
Money Market Accounts [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets, fair value	0	0
Money Market Funds [Member]
Assets, fair value	24,748	15,801
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets, fair value	0	0
Money Market Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets, fair value	24,748	15,801
Money Market Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets, fair value	0	0
Bank Time Deposits [Member]
Assets, fair value	2,203	5,045
Bank Time Deposits [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets, fair value	0	0
Bank Time Deposits [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets, fair value	2,203	5,045
Bank Time Deposits [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets, fair value	0	0
United States Treasury Bill [Member]
Assets, fair value	19,938
United States Treasury Bill [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets, fair value	0
United States Treasury Bill [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets, fair value	19,938
United States Treasury Bill [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets, fair value	0
Commercial Notes [Member]
Assets, fair value	7,465	19,998
Commercial Notes [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets, fair value	0	0
Commercial Notes [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets, fair value	7,465	19,998
Commercial Notes [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets, fair value		0
Guaranteed Investment Certificate [Member]
Assets, fair value		20,016
Guaranteed Investment Certificate [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets, fair value		0
Guaranteed Investment Certificate [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets, fair value		20,016
Guaranteed Investment Certificate [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets, fair value		$ 0