Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment - Additional Information (Details)

v3.19.3
Property and Equipment - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Property Plant And Equipment [Line Items]        
Depreciation expense $ 105,000 $ 156,000 $ 373,000 $ 423,000
Tenant Improvement | Minimum        
Property Plant And Equipment [Line Items]        
Property and equipment, estimated useful Life     6 years  
Tenant Improvement | Maximum        
Property Plant And Equipment [Line Items]        
Property and equipment, estimated useful Life     10 years  
Property and Equipment, Other Types | Minimum        
Property Plant And Equipment [Line Items]        
Property and equipment, estimated useful Life     3 years  
Property and Equipment, Other Types | Maximum        
Property Plant And Equipment [Line Items]        
Property and equipment, estimated useful Life     15 years