REVENUE RECOGNITION AND RECEIVABLES (Tables)

6 Months Ended

Jun. 30, 2022

REVENUE RECOGNITION AND RECEIVABLES

Summary of revenues

	Three months ended				Six months ended
	June 30, 2022		June 30, 2021		June 30, 2022		June 30, 2021
Services transferred over time	$	154,680	$	104,488	$	308,272	$	206,520
Goods and services transferred at a point in time		11,867		11,876		18,188		27,272
Total revenue accounted for under ASC 606		166,547		116,364		326,460		233,792

Summary of contracts asset and liabilities

Contract assets and liabilities consisted of the following (amounts in thousands)

	June 30, 2022		December 31, 2021			$ Change	% Change
Contract asset – current	$	3,502	$	4,805	$	(1,303)	(27)	%
Contract asset – noncurrent		906		900		6	1	%
Contract liability – current		(25,181)		(25,332)		151	1	%
Contract liability – noncurrent		(75,919)		(81,391)		5,472	7	%
Net contract liability	$	(96,692)	$	(101,018)	$	4,326	4	%

Schedule of activity in allowances for credit losses

	Six months ended June 30, 2022		Six months ended June 30, 2021
Balance at beginning of period	$	13,885	$	12,121
Current period provision for expected losses		3,153		2,299
Write-offs charged against the allowance		(1,497)		(1,196)
Recoveries collected		208		267
Balance at end of period	$	15,749	$	13,491