Revenue from Contract with Customers (Tables)

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]


	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2021		2020		2021		2020
Contract operations:
0 ― 1,000 horsepower per unit	$	45,918	$	57,728	$	92,837	$	124,468
1,001 ― 1,500 horsepower per unit		66,852		78,026		135,316		162,878
Over 1,500 horsepower per unit		50,939		51,618		101,342		106,209
Other ⁽¹⁾		156		577		404		1,368
Total contract operations revenue ⁽²⁾		163,865		187,949		329,899		394,923

Aftermarket services:
Services		17,008		19,081		33,900		44,531
OTC parts and components sales		14,742		13,286		27,247		30,559
Total aftermarket services revenue ⁽³⁾		31,750		32,367		61,147		75,090

Total revenue	$	195,615	$	220,316	$	391,046	$	470,013

(1)	Primarily relates to fees associated with owned non-compression equipment.

(2)

Includes $1.4 million and $1.5 million for the three months ended June 30, 2021 and 2020, respectively, and $2.4 million and $3.1 million for the six months ended June 30, 2021 and 2020, respectively, related to billable maintenance on owned compressors that was recognized at a point in time. All other contract operations revenue is recognized over time.

(3)	All services revenue within aftermarket services is recognized over time. All OTC parts and components sales revenue is recognized at a point in time.

Schedule of remaining Performance Obligation


(in thousands)	2021		2022		2023		2024		2025		Total
Remaining performance obligations	$	155,764	$	106,352	$	20,785	$	3,512	$	144	$	286,557

Summary of changes in the allowance for credit losses balance


(in thousands)
Balance at December 31, 2020	$	3,370
Provision for (benefit from) credit losses		(215)
Write-offs charged against allowance		(424)
Balance at June 30, 2021	$	2,731