Inventory - Schedule of Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Finished goods	$ 47,474	$ 60,766
Contract assets	40,496	37,843
Work-in-process	4,527	5,143
Raw materials	21,739	12,708
Inventories - net	$ 114,236	$ 116,460