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Restricted Cash - Additional Information (Detail) - Cara Therapeutics, Inc.
$ in Thousands
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Oct. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
May 31, 2023
ft²
Restricted Cash and Cash Equivalents Items [Line Items]          
Restricted cash, current assets $ 0 $ 0   $ 408  
Restricted cash, long-term assets $ 0 0   1,500  
Old Stamford Lease [Member]          
Restricted Cash and Cash Equivalents Items [Line Items]          
Restricted cash, current assets   $ 0   408  
New Stamford Lease [Member]          
Restricted Cash and Cash Equivalents Items [Line Items]          
Leased office space area | ft²         26,374
Restricted cash that became unrestricted     $ 1,500    
Restricted cash, long-term assets       $ 1,500