Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Equipment rentals	$ 12,903	$ 0
Total revenues	304,171	301,587
Cost of revenues (excluding depreciation and amortization expense):
Cost of equipment rentals	1,065	0
Cost of goods and services sold	168,687	174,233
Depreciation and amortization	78,234	80,007
Impairments and other charges	0	15,367
Insurance recoveries	0	(517)
Selling, general, and administrative expense	43,299	34,295
Interest expense, net of capitalized interest of $366 in 2021 and $160 in 2020	54,791	54,468
Other (income) expense, net	3,868	3,544
Loss before taxes and discontinued operations	(44,708)	(59,810)
Provision for income taxes	4,952	3,144
Loss from continuing operations	(49,660)	(62,954)
Income (loss) from discontinued operations, net of taxes	(612)	(10,886)
Net loss	(50,272)	(73,840)
General partner interest in net loss	(573)	(1,037)
Common units interest in net loss	$ (49,699)	$ (72,803)
Basic and diluted net loss per common unit:
Loss from continuing operations per common unit, diluted (in usd per share)	$ (0.80)	$ (1.31)
Loss from continuing operations per common unit, diluted (in usd per share)	(0.80)	(1.31)
Income (loss) from discontinued operations per common unit, diluted (in usd per share)	(0.01)	(0.23)
Loss from discontinued operations per common unit, basic (in usd per share)	(0.01)	(0.23)
Net loss per common unit, basic (in usd per share)	(0.81)	(1.54)
Net loss per common unit, diluted (in usd per share)	$ (0.81)	$ (1.54)
Weighted average common units outstanding:
Basic (in shares)	61,054,134	47,301,804
Diluted (in shares)	61,054,134	47,301,804
Contract services
Revenues:
Revenue from contracts with customers	$ 234,998	$ 228,088
Cost of revenues (excluding depreciation and amortization expense):
Cost of goods and service, excluding depreciation and amortization expense	118,702	108,843
Aftermarket services
Revenues:
Revenue from contracts with customers	53,534	60,290
Cost of revenues (excluding depreciation and amortization expense):
Cost of goods and service, excluding depreciation and amortization expense	45,578	52,444
Equipment sales
Revenues:
Revenue from contracts with customers	2,736	13,209
Cost of revenues (excluding depreciation and amortization expense):
Cost of goods and service, excluding depreciation and amortization expense	$ 3,342	$ 12,946