Revenue (Schedule of Accounts Receivable) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Completed contracts	$ 10,612	$ 12,347
Contracts in progress	65,415	21,239
Retainage	7,490	5,968
Accounts receivable, gross	83,517	39,554
Allowance for doubtful accounts	(564)	(564)
Total accounts receivable—net	$ 82,953	$ 38,990