Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Total revenues	$ 99,707	$ 94,895	$ 287,857	$ 259,429
Cost of revenues (excluding depreciation and amortization expense):
Total cost of revenues	54,321	53,478	159,619	143,682
Depreciation and amortization	19,256	19,867	57,193	58,572
Impairments and other charges	0	135	0	135
Selling, general, and administrative expense	11,686	10,731	33,956	32,483
Interest expense, net of capitalized interest of $3 and $13 in 2023 and $119 and $300 in 2022	13,410	12,615	40,472	37,552
Other expense, net	1,772	1,661	1,065	2,530
Loss before taxes and discontinued operations	(738)	(3,592)	(4,448)	(15,525)
Provision for income taxes	209	940	1,685	2,497
Loss from continuing operations	(947)	(4,532)	(6,133)	(18,022)
Income from discontinued operations, net of taxes	0	81	0	173
Net loss	(947)	(4,451)	(6,133)	(17,849)
General partner interest in net loss	(4)	(21)	(28)	(84)
Common units interest in net loss	$ (943)	$ (4,430)	$ (6,105)	$ (17,765)
Earnings Per Unit [Abstract]
Net loss per common unit, basic (in dollars per share)	$ (0.01)	$ (0.03)	$ (0.04)	$ (0.13)
Net loss per common unit, diluted (in dollars per share)	$ (0.01)	$ (0.03)	$ (0.04)	$ (0.13)
Weighted average common units outstanding:
Basic (in shares)	141,995,028	141,213,944	141,868,154	141,067,185
Diluted (in shares)	141,995,028	141,213,944	141,868,154	141,067,185
Contract services
Revenues:
Total revenues	$ 71,457	$ 67,492	$ 211,625	$ 194,647
Cost of revenues (excluding depreciation and amortization expense):
Total cost of revenues	35,153	34,793	107,747	99,418
Aftermarket services
Revenues:
Total revenues	23,686	23,192	62,246	52,273
Cost of revenues (excluding depreciation and amortization expense):
Total cost of revenues	18,202	18,056	49,340	42,051
Equipment rentals
Revenues:
Total revenues	4,197	3,869	13,084	10,987
Cost of revenues (excluding depreciation and amortization expense):
Total cost of revenues	555	563	1,665	1,530
Equipment sales
Revenues:
Total revenues	367	342	902	1,522
Cost of revenues (excluding depreciation and amortization expense):
Total cost of revenues	$ 411	$ 66	$ 867	$ 683