Assets Manufactured for Internal Use, net - Components (Details) - Assets Manufactured for Internal Use - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets manufactured for internal use
Useful life	10 years
Total cost	$ 60,768	$ 62,618
Accumulated depreciation	(28,764)	(24,155)
Assets manufactured for internal use, net	32,004	38,463
Depreciation expense	5,300	5,200	$ 3,900
Internal use assets
Assets manufactured for internal use
Total cost	60,596	62,462
Construction in process
Assets manufactured for internal use
Total cost	$ 172	$ 156