XML 50 R38.htm IDEA: XBRL DOCUMENT v3.20.2
Leases - Schedule of Right-of-Use Assets and Lease Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Lessee Lease Description [Line Items]    
Right-of-use assets $ 1,225 $ 1,483
Lease liabilities 1,278  
Del Mar, CA [Member]    
Lessee Lease Description [Line Items]    
Right-of-use assets 678  
Lease liabilities 706  
Burlingame, CA [Member]    
Lessee Lease Description [Line Items]    
Right-of-use assets 248  
Lease liabilities 272  
Edwardsville, IL [Member]    
Lessee Lease Description [Line Items]    
Right-of-use assets 299  
Lease liabilities $ 300