Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 12,316	$ 8,475
Inventories	52,361	45,902
Prepaid expenses and other current assets	7,252	7,905
Total current assets	128,268	128,315
Property, plant, and equipment:
Land and building	7,227	7,227
Compressors and equipment	1,120,944	1,103,657
Vehicles	8,604	8,640
Construction in progress	30,906	37,183
Total property, plant, and equipment	1,167,681	1,156,707
Less accumulated depreciation	(638,814)	(611,734)
Net property, plant, and equipment	528,867	544,973
Other assets:
Intangible assets, net of accumulated amortization of $38,106 as of June 30, 2023 and $36,627 as of December 31, 2022	17,661	19,140
Operating lease right-of-use assets	27,841	27,205
Deferred tax assets	3	3
Other assets	2,959	2,767
Total other assets	48,464	49,115
Total assets	705,599	722,403
Current liabilities:
Accounts payable	25,146	34,589
Unearned income	4,915	2,590
Accrued liabilities and other	43,931	47,076
Total current liabilities	73,992	84,255
Other liabilities:
Long-term debt, net	635,566	634,016
Deferred tax liabilities	1,174	1,245
Operating lease liabilities	18,194	19,419
Other long-term liabilities	9,392	8,742
Total other liabilities	664,326	663,422
Commitments and contingencies
Partners' capital:
General partner interest	(1,656)	(1,618)
Common units (141,995,028 units issued and outstanding at June 30, 2023 and 141,237,462 units issued and outstanding at December 31, 2022)	(16,657)	(9,250)
Accumulated other comprehensive loss	(14,406)	(14,406)
Total partners' capital	(32,719)	(25,274)
Total liabilities and partners' capital	705,599	722,403
Nonrelated Party
Current assets:
Trade accounts receivable, net of allowance for credit losses of $389 as of June 30, 2023 and $736 as of December 31, 2022	55,641	65,085
Affiliated Entity
Current assets:
Trade accounts receivable, net of allowance for credit losses of $389 as of June 30, 2023 and $736 as of December 31, 2022	$ 698	$ 948