Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Inventory, finished goods, trial and evaluation hardware	$ 1,600	$ 1,400
Raw materials	35,695	20,789
Finished goods	45,315	18,056
Total inventory	$ 81,010	$ 38,845