Leases - Lease, Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease expense	$ 153	$ 140
Short-term lease expense	12	12
Variable lease expense	3	2
Other	1	5
Total lease expense	$ 169	$ 159