Leases - Other Information Related to Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating leases, weighted average remaining lease term	5 years 6 months
Finance leases, weighted average remaining lease term	1 year
Operating leases, weighted average discount rate	5.10%
Finance leases, weighted average discount rate	5.90%
Operating cash flows from operating leases	$ 57
Operating cash flows from finance leases	2
Financing cash flows from finance leases	30
Operating leases, ROU assets obtained in exchange for lease obligations	0
Finance leases, ROU assets obtained in exchange for lease obligations	$ 0