RECEIVABLES (Tables)

12 Months Ended

Dec. 31, 2021

RECEIVABLES

Schedule of receivables

$s in thousands	2021		2020
Trade	$	183,747	$	186,502
Unbilled revenue		62,029		52,858
Other		7,421		5,554
Total receivables		253,197		244,914
Allowance for credit losses		(3,043)		(2,936)
Receivables, net	$	250,154	$	241,978

Schedule of change in the allowance for doubtful accounts receivable

			Charged
	Balance at		(Credited) to		Recoveries
	Beginning of		Costs and		(Deductions/				Balance at
$s in thousands	Period		Expenses		Write-offs)		Adjustments		End of Period
Year ended December 31, 2021	$	2,936	$	1,179	$	(1,075)	$	3	$	3,043
Year ended December 31, 2020	$	3,010	$	(412)	$	296	$	42	$	2,936
Year ended December 31, 2019	$	2,998	$	226	$	(439)	$	225	$	3,010