Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

Summary of Accounts Receivable

Accounts receivable consisted of the following:

	December 31,
(table only in thousands)	2021			2020
Contract receivables	$	65,932		$	57,435
Trade receivables		12,537			8,721
Allowance for doubtful accounts		(3,478	)		(3,110	)
Total accounts receivable	$	74,991		$	63,046