Summary of Significant Accounting Policies - Restricted Cash and Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts Receivable [Abstract]
Allowance for credit losses	$ 300	$ 300
Retainage	43,467	$ 41,379
Retainage, long-term	$ 5,200