Leases - Schedule of Cost Components of Operating Lease (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)		Sep. 30, 2019 USD ($)
Leases [Abstract]
Operating lease expense	$ 109		$ 328
Variable lease expense	$ 136	[1]	$ 404	[1]
Remaining lease term (years)	2 years 6 months		2 years 6 months
Discount rate	3.75%		3.75%

[1] Variable lease costs are payments that vary because of changes in facts or circumstances and include common area maintenance and property taxes related to the premises. Variable lease costs are excluded from the calculation of minimum lease payments.