Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Operating activities
Net loss	$ (9,757)	$ (12,185)	$ (25,756)	$ (4,870)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation, Depletion and Amortization, Total	300	300	863	800
Foreign currency remeasurement (gain) loss			(161)	368
Provision for doubtful accounts			(880)	175
Stock-based compensation			50,475	16,235
Gain on disposal of property and equipment			(15)	0
Deferred income taxes			(1,008)	(1,973)
Change in value of earn-out and warrant liabilities	(13,650)	0	(13,650)	0
Changes in operating assets and liabilities:
Accounts receivable and long-term unbilled receivables			(7,002)	(2,416)
Prepaid expenses and other current assets			(10,775)	2,836
Deferred contract costs and other assets			(3,269)	(3,040)
Accounts payable, accrued expenses and other liabilities			1,836	(1,949)
Deferred revenue			5,377	4,965	$ 14,088
Net cash provided by (used in) operating activities			(3,965)	11,131
Investing activities
Maturity (purchase) of short-term investments			(638)	1,466
Purchase of property and equipment			(1,445)	(314)
Net cash provided by (used in) investing activities			(2,083)	1,152
Financing activities
Proceeds from recapitalization of Apex shares			491,563	0
Payments of transaction fees			(49,990)	0
Redemption of redeemable convertible preferred stock			(130,925)	(33,712)
Redemption of Legacy AvePoint common stock			(106,169)	0
Payments of transaction fees by Legacy AvePoint			(2,998)	0
Purchase of treasury stock			(1,631)	0
Payment of net cash settlement for management options			(7,530)	0
Proceeds from stock option exercises			4,555	54
Proceeds from sale of common shares of subsidiary			753	0
Repayments of capital leases			(20)	(42)
Payments of debt issuance costs			0	(300)
Proceeds from issuance of Common stock, net of issuance costs			0	56,753
Net cash provided by financing activities			197,608	22,753
Effect of exchange rates on cash			32	(329)
Net increase in cash and cash equivalents			191,592	34,707
Cash and cash equivalents at beginning of period			69,112	12,162	12,162
Cash and cash equivalents at end of period	$ 260,704	$ 46,869	260,704	46,869	$ 69,112
Supplemental disclosures of cash flow information
Interest			80	0
Income taxes			(2,823)	80
Non-cash investing and financing activities
Issuance of common shares in exchange for issuance cost			0	2,408
Fixed assets acquired under capital leases			$ 0	$ 28