Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jul. 01, 2021	Feb. 11, 2021	Dec. 31, 2020 USD ($)	Dec. 24, 2020	Dec. 31, 2019 USD ($)
Business Combination, Share Exchange Ratio					8.69144
Cash, Ending Balance	$ 8,100		$ 8,100				$ 6,800
Capitalized Contract Cost, Amortization	2,500	$ 3,000	7,100	$ 8,100
Capitalized Contract Cost, Net, Total	35,267		35,267				31,943		$ 28,351
Revenue from Contract with Customer, Excluding Assessed Tax, Total	53,927	39,794	138,071	105,411
Contract with Customer, Liability, Total	$ 78,126		78,126				$ 74,688		$ 60,600
Contract with Customer, Liability, Revenue Recognized			$ 56,200	45,600
Revenue, Remaining Performance Obligation, Percentage	65.00%		65.00%
AvePoint EduTech PTE. LTD. [Member]
Noncontrolling Interest, Ownership Percentage by Parent	76.09%		76.09%			76.09%		77.78%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	23.91%		23.91%			23.91%		22.22%
Termed License and Support [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 17,477	8,171	$ 37,292	23,272
Revenue, Remaining Performance Obligation, Amount	134,500		134,500
SaaS [Member
Revenue from Contract with Customer, Excluding Assessed Tax, Total	22,410	14,092	61,255	36,034
Revenue, Remaining Performance Obligation, Amount	175,400		175,400
Transferred at Point in Time [Member] | Termed License and Support [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	14,100	5,900	27,600	16,300
Other Nonoperating Income (Expense) [Member]
Foreign Currency Transaction Gain (Loss), before Tax, Total	$ (300)	$ (0)	$ (500)	$ (500)