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Organization and description of business operations - Additional Information (Details)
Nov. 08, 2022
shares
Nov. 07, 2022
$ / shares
shares
Oct. 27, 2022
May 18, 2020
$ / shares
shares
Sep. 30, 2022
$ / shares
shares
Mar. 01, 2022
$ / shares
Dec. 31, 2021
$ / shares
shares
Description of Business              
Common stock, par value (in dollars per share) | $ / shares         $ 0.001 $ 0.001 $ 0.001
Conversion reverse stock split ratio 0.02   0.02        
Common shares outstanding 2,971,439 148,571,994     2,670,856   1,272,383
Common stock, shares issued 2,971,439 148,571,994     2,670,856   1,272,383
Common stock, shares authorized         450,000,000   450,000,000
Merger Agreement              
Common stock, par value (in dollars per share) | $ / shares         $ 0.001 $ 0.001 $ 0.001
Conversion reverse stock split ratio 0.02   0.02        
Common stock, shares outstanding 2,971,439 148,571,994     2,670,856   1,272,383
Common stock, shares issued 2,971,439 148,571,994     2,670,856   1,272,383
Subsequent event              
Description of Business              
Common stock, par value (in dollars per share) | $ / shares   $ 0.001          
Conversion reverse stock split ratio   0.02          
Merger Agreement              
Common stock, par value (in dollars per share) | $ / shares   $ 0.001          
Conversion reverse stock split ratio   0.02          
VARs              
Merger Agreement              
Outstanding at the ending (in shares)         4,546   7,190
Merger Agreement              
Description of Business              
Common stock, par value (in dollars per share) | $ / shares       $ 0.001      
Conversion reverse stock split ratio       0.0833      
Common shares outstanding       236,980      
Merger Agreement              
Common stock, par value (in dollars per share) | $ / shares       $ 0.001      
Conversion reverse stock split ratio       0.0833      
Common stock, shares outstanding       236,980      
Merger Agreement | BioPharmX              
Merger Agreement              
Outstanding common stock owned       88.50%      
Merger Agreement | Timber Sub              
Merger Agreement              
Ownership held by stockholders       11.50%      
Common stock issued per unit       12.59      
Common stock issued for VARs       7,353      
Preferred units before merger       1,819,289      
Merger Agreement | Timber Sub | VARs              
Merger Agreement              
Outstanding at the ending (in shares)       11.68      
Merger Agreement | Timber Sub | Series A preferred stock (if converted)              
Merger Agreement              
Common stock on conversion of units       1,819