MAIA Biotechnology, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Nature of Business and Summary of Significant Accounting Policies - Additional Information (Details)

Nature of Business and Summary of Significant Accounting Policies - Additional Information (Details)			1 Months Ended	2 Months Ended	3 Months Ended	6 Months Ended
	Aug. 03, 2022 USD ($) shares	Aug. 01, 2022 USD ($) shares	May 31, 2022 USD ($)	Feb. 28, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($) shares	Dec. 31, 2022 USD ($)	Aug. 12, 2021	Jul. 31, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
State of incorporation						DE
Date of incorporation						Aug. 03, 2018
Common stock, conversion description						minority stockholder of THIO received one share of MAIA common stock for each share of THIO common stock owned prior to the merger.
Common stock, conversion ratio						1
Accumulated deficit					$ (52,847,772)	$ (52,847,772)		$ (44,207,272)
Cash					9,146,156	9,146,156		10,950,927
Current liabilities					3,272,829	3,272,829		3,268,906
Gross proceeds from sale of common stock	$ 9,093,830		$ 99,999	$ 2,373,561			$ 2,473,560
Issuance of common shares					4,156,859
Cash equivalents					$ 0	$ 0		$ 0
IPO
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Number of common stock sold \| shares		2,000,000
Issuance of common shares		$ 1,099,360
Overallotment Option
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Number of common stock sold \| shares	300,000
MAIA Biotechnology, Inc. \| THIO Therapeutics, Inc.
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Ownership percentage by parent									93.30%
Minority stockholder ownership percentage									6.70%
MAIA Biotechnology, Inc. \| MAIA Drug Development Corporation
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Ownership percentage by parent										100.00%
DGD Pharmaceuticals Corporation
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
State of incorporation						DE
Date of incorporation						Apr. 01, 2019
MAIA Drug Development Corporation
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
State of incorporation						TX
Date of incorporation						Sep. 10, 2018
DGD or THIO
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Number of common stock sold \| shares						137,021	0