Quarterly report pursuant to Section 13 or 15(d)

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

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Nature of Business and Summary of Significant Accounting Policies - Additional Information (Details)
 3 Months Ended
Mar. 31, 2024
USD ($)
shares
Mar. 31, 2023
shares
Dec. 31, 2023
USD ($)
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        
Working capital $ 3,792,234        
Accumulated deficit (72,047,632)   $ (63,980,177)    
Cash 8,271,449   7,150,695    
Current liabilities 4,907,767   4,937,153    
Cash equivalents $ 0   $ 0    
Restricted Stock Awards          
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]          
Shares granted | shares 12,500 40,500      
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   0