Revenue From Contracts With Customers - Disaggregation of Revenue Based on Timing of Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue From Contracts With Customers [Abstract]
Products and services transferred at a point in time	$ 3,068	$ 2,727	$ 6,065	$ 6,963
Products and services transferred over time	3,381	2,619	6,355	5,531
Total revenue from contracts with customers	$ 6,449	$ 5,346	$ 12,420	$ 12,494