Other Current Assets - Schedule of Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid software maintenance	$ 3,887	$ 3,058
Income tax receivable	4,333	337
Prepaid insurance	2,824	4,297
Restricted cash	2,505	2,426
Prepaid vendor payments	2,188	1,835
Prepaid taxes	1,131	345
Prepaid other	1,954	1,296
Other	1,558	3,631
Other current assets	$ 20,380	$ 17,225