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Leases - Schedule of Right-of-Use Assets and Lease Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Lessee Lease Description [Line Items]    
Right-of-use assets $ 2,698 $ 2,776
Lease liabilities 2,804 2,867
Del Mar, CA [Member]    
Lessee Lease Description [Line Items]    
Right-of-use assets 224 336
Lease liabilities 243 360
Hayward, CA [Member]    
Lessee Lease Description [Line Items]    
Right-of-use assets 1,595 1,800
Lease liabilities 1,661 1,852
San Diego, CA [Member]    
Lessee Lease Description [Line Items]    
Right-of-use assets 506 590
Lease liabilities 526 605
Edwardsville, IL [Member]    
Lessee Lease Description [Line Items]    
Right-of-use assets 373 50
Lease liabilities $ 374 $ 50