Revenues and Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2021

Revenues And Accounts Receivable [Abstract]

Schedule of Contract Balances

The following table presents the Company’s contract balances:

	March 31,		December 31,
	2021		2020
Contract assets	$	61,636	$	38,576
Contract liabilities		6,476		6,114

Schedule of Accounts Receivable, Net

Accounts receivable, net consisted of the following:

	March 31,			December 31,
	2021			2020
Accounts receivable, invoiced	$	64,314		$	57,228
Accounts receivable, other		5,766			1,139
Allowance for doubtful accounts		(4,309	)		(4,265	)
Accounts receivable—net	$	65,771		$	54,102

Schedule of Allowance for Doubtful Accounts

The allowance for doubtful accounts consisted of the following:

	Beginning Balance		Bad Debt Expense		Charged to Allowance			Other(1)		Ending Balance
Three months ended March 31, 2021	$	4,265	$	508	$	(473	)	$	9	$	4,309
Year ended December 31, 2020		1,327		4,532		(2,633	)		1,039		4,265

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(1) This amount consists of additions to the allowance due to business acquisitions.