Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 15,502	$ 8,475
Inventories	46,715	45,902
Prepaid expenses and other current assets	7,123	7,905
Total current assets	124,812	128,315
Property, plant, and equipment:
Land and building	7,227	7,227
Compressors and equipment	1,126,515	1,103,657
Vehicles	8,749	8,640
Construction in progress	31,410	37,183
Total property, plant, and equipment	1,173,901	1,156,707
Less accumulated depreciation	(651,838)	(611,734)
Net property, plant, and equipment	522,063	544,973
Other assets:
Intangible assets, net of accumulated amortization of $38,846 as of September 30, 2023 and $36,627 as of December 31, 2022	16,921	19,140
Operating lease right-of-use assets	25,028	27,205
Deferred tax assets	3	3
Other assets	3,412	2,767
Total other assets	45,364	49,115
Total assets	692,239	722,403
Current liabilities:
Accounts payable	22,408	34,589
Unearned income	3,955	2,590
Accrued liabilities and other	56,112	47,076
Total current liabilities	82,475	84,255
Other liabilities:
Long-term debt, net	619,341	634,016
Deferred tax liabilities	1,034	1,245
Operating lease liabilities	16,504	19,419
Other long-term liabilities	7,532	8,742
Total other liabilities	644,411	663,422
Commitments and contingencies
Partners' capital:
General partner interest	(1,667)	(1,618)
Common units (141,995,028 units issued and outstanding at September 30, 2023 and 141,237,462 units issued and outstanding at December 31, 2022)	(18,563)	(9,250)
Accumulated other comprehensive loss	(14,417)	(14,406)
Total partners' capital	(34,647)	(25,274)
Total liabilities and partners' capital	692,239	722,403
Nonrelated Party
Current assets:
Trade accounts receivable, net of allowance for credit losses of $365 as of September 30, 2023 and $736 as of December 31, 2022	54,864	65,085
Affiliated Entity
Current assets:
Trade accounts receivable, net of allowance for credit losses of $365 as of September 30, 2023 and $736 as of December 31, 2022	$ 608	$ 948