Property and Equipment - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Property Plant And Equipment [Line Items]
Depreciation expense	$ 122,000	$ 177,000
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
Other Property and Equipment | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Other Property and Equipment | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	15 years