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Notes Payable - Term Loan Agreement - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 9 Months Ended
Nov. 14, 2022
Feb. 28, 2022
Dec. 31, 2016
Sep. 30, 2022
Dec. 31, 2019
Common Stock [Member]          
Debt Instrument [Line Items]          
Number of shares issuable for warrants outstanding (in shares)     10,579   11,365
Exercise price of warrants     $ 77.50   $ 77.50
CRG [Member] | Term Loan Agreement [Member]          
Debt Instrument [Line Items]          
Debt maturity date   Dec. 30, 2023      
Proceeds from issuance of long-term debt     $ 40.0    
Debt term (in years)     6 years    
Debt instrument, term of interest-only payments (in years)     4 years    
Final fee as a percentage of the principal outstanding (as a percent)     8.00% 10.00% 10.00%
Annual fixed rate (as a percent)     11.50%    
Deferred interest rate (as a percent)     3.50%    
Debt instrument, prepayment fee term (in years)     5 years    
Minimum cash balance       $ 5.0  
Additional interest rate, event of default (as a percent)       4.00%  
CRG [Member] | Term Loan Agreement [Member] | Subsequent Event [Member]          
Debt Instrument [Line Items]          
Debt maturity date Dec. 30, 2024