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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2020
Accounting Policies [Line Items]                
Cash, cash equivalents, and marketable securities $ 37,800,000     $ 37,800,000     $ 41,400,000  
Milestone payment received       5,095,837 $ 30,000,000      
Revenue recognized under "ERC"           $ 191,199    
Receivables under "ERC" 547,580     547,580   $ 738,778   $ 738,778
Depreciation 254,702   $ 112,011 484,803 204,501      
Research and development 8,817,389   4,965,088 16,478,908 10,080,787      
Comprehensive loss $ 7,281,872   $ 7,086,581 $ 15,060,396 $ 14,904,675      
Antidilutive securities 7,784,934   6,142,203 7,784,934 6,142,203      
Grant Income $ 0   $ 0 $ 0 $ 0      
Commercialization and Distribution Agreement with Nippon Shinyaku Co, Limited, Japan                
Accounting Policies [Line Items]                
Milestone payment received   $ 12,000,000.0            
Minimum                
Accounting Policies [Line Items]                
Estimated useful lives (in years)       5 years        
Maximum                
Accounting Policies [Line Items]                
Estimated useful lives (in years)       7 years