Inventories (Schedule of Inventory) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Components of Inventory
Raw materials	$ 4,339	$ 10,608
Work-in-process	0	0
Finished goods	23,056	18,798
Inventories	27,395	29,406
Less reserve for excess and obsolete inventory	(5,698)	(2,117)	$ (368)	$ (50)
Inventories, net	21,697	$ 27,289
Excess terpene
Components of Inventory
Less reserve for excess and obsolete inventory	$ (4,400)