Leases - Other Information Related to Leases (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Leases [Abstract]
Operating leases, weighted average remaining lease term (in years)	5 years 3 months
Finance leases, weighted average remaining lease term (in years)	2 years 2 months
Operating leases, weighted average discount rate	5.10%
Finance leases, weighted average discount rate	6.20%
Operating cash flows from operating leases	$ 114
Operating cash flows from finance leases	3
Financing cash flows from finance leases	60
Operating leases, ROU assets obtained in exchange for lease obligations	0
Finance leases, ROU assets obtained in exchange for lease obligations	$ 160