GOODWILL AND INTANGIBLES - NET INTANGIBLES (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Goodwill [Line Items]
Intangible assets, gross (excluding goodwill)		$ 15,200	$ 15,200
Accumulated amortization		(12,773)	(12,397)
Total intangibles, net	[1]	2,427	2,803
Customer contracts
Goodwill [Line Items]
Intangible assets, gross (excluding goodwill)		9,300	9,300
Customer relationships
Goodwill [Line Items]
Intangible assets, gross (excluding goodwill)		$ 5,900	$ 5,900

[1] Total intangibles, net are included in “Other non-current assets” within the Partnership’s condensed consolidated balance sheets.