Segments (Tables)

12 Months Ended

Dec. 31, 2021

Segments

Summary of revenue and other financial information by reportable segment

	Contract		Aftermarket
(in thousands)	Operations		Services		Other (1)		Total
2021
Revenue	$	648,311	$	133,150	$	—	$	781,461
Gross margin		403,825		18,719		—		422,544
Capital expenditures		94,863		2,675		347		97,885
2020
Revenue	$	738,918	$	136,052	$	—	$	874,970
Gross margin		477,831		19,946		—		497,777
Capital expenditures		133,492		5,308		1,502		140,302
2019
Revenue	$	771,539	$	193,946	$	—	$	965,485
Gross margin		474,279		34,968		—		509,247
Capital expenditures		374,650		8,714		1,834		385,198

(1) Corporate-related items.

Schedule of assets by segment

	December 31,
(in thousands)	2021		2020
Contract operations assets	$	2,429,805	$	2,593,864
Aftermarket services assets		49,420		45,985
Segment assets		2,479,225		2,639,849
Other assets (1)		100,930		128,837
Assets associated with discontinued operations		9,811		11,036
Total assets	$	2,589,966	$	2,779,722

(1) Corporate-related items.

Reconciliation of net income (loss) to gross margin

	Year Ended December 31,
(in thousands)	2021		2020		2019
Total gross margin	$	422,544	$	497,777	$	509,247
Less:
Selling, general and administrative		107,167		105,100		117,727
Depreciation and amortization		178,946		193,138		188,084
Long-lived and other asset impairment		21,397		79,556		44,663
Goodwill impairment		—		99,830		—
Restatement and other charges		—		—		445
Restructuring charges		2,903		8,450		—
Interest expense		108,135		105,716		104,681
Debt extinguishment loss		—		3,971		3,653
Transaction-related costs		—		—		8,213
Gain on sale of assets, net		(30,258)		(10,643)		(16,016)
Other income, net		(4,707)		(1,359)		(661)
Income (loss) before income taxes	$	38,961	$	(85,982)	$	58,458