Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Schedule of Accounts Receivable

Accounts receivable at December 31 consisted of the following (in thousands):

	2020		2019
Trade accounts receivable	$	174,604	$	119,239
Costs in excess of billings	26,915		20,607
Total accounts receivables	201,519		139,846
Less allowance for doubtful accounts	(3,529)		(5,951)
Accounts receivable, net	$	197,990	$	133,895