Business Combinations - Consideration Transferred for City Semi (Details) - USD ($) $ in Thousands		6 Months Ended
	May 13, 2020	Jun. 30, 2021	Jun. 30, 2020
Business Acquisition [Line Items]
Deferred City Semi compensation		$ 250	$ 333
City Semi
Business Acquisition [Line Items]
Class H units issued	$ 711
Deferred City Semi compensation	1,180
Cash consideration to be transferred at a later date	138
Total	$ 2,029