Contract Receivables (Tables)

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Summary of Contract Receivables

Contract receivables consisted of the following: 

	December 31, 2020			December 31, 2019
Billed receivables	$	230,466		$	264,682
Allowance for doubtful accounts		(7,616	)		(3,506	)
Contract receivables, net	$	222,850		$	261,176