Leases - Other Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
General and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 18	$ 20
Related party lease cost	13	11
Production costs
Lessee, Lease, Description [Line Items]
Operating lease cost	20	19
Short-term lease cost	$ 66	$ 191