Leases - Components of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating lease cost	$ 552	$ 666	$ 1,106	$ 1,327
Related party operating lease cost	788	783	1,577	1,567
Short-term lease cost	$ 182	$ 119	$ 308	$ 251