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Balance Sheet Details - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Oct. 05, 2021
Apr. 22, 2020
Restricted Cash And Cash Equivalents Items [Line Items]        
Restricted cash $ 40,000 $ 40,000    
Inventory, net 6,281,000 6,013,000    
Inventory reserves 800,000 900,000    
Amortization expense 1,552,000 647,000    
Estimated aggregate amortization expense, year one 1,600,000      
Estimated aggregate amortization expense, year two 1,600,000      
Estimated aggregate amortization expense, year three 1,600,000      
Estimated aggregate amortization expense, year four 1,600,000      
Estimated aggregate amortization expense, year five $ 1,600,000      
Promissory Note | Paycheck Protection Program (PPP Loan)        
Restricted Cash And Cash Equivalents Items [Line Items]        
Promissory note       $ 2,300,000
Debt instrument, interest rate       1.00%
Forgiveness percentage     100.00%  
Unforgiven portion interest and principle payments end date Apr. 22, 2022      
Tetraphase Pharmaceuticals, Inc. | Fair Value Step-Up Adjustment to Inventory        
Restricted Cash And Cash Equivalents Items [Line Items]        
Inventory, net $ 0 900,000    
Credit Card        
Restricted Cash And Cash Equivalents Items [Line Items]        
Restricted cash $ 40,000 $ 40,000