Contract Receivables (Tables)

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Summary of Contract Receivables

Contract receivables consisted of the following: 

	December 31, 2019			December 31, 2018
Billed receivables	$	264,682		$	236,250
Allowance for doubtful accounts		(3,506	)		(5,284	)
Contract receivables, net	$	261,176		$	230,966