EQUITY AND NONCASH COMPENSATION - Narrative (Details) $ in Millions	12 Months Ended
Dec. 31, 2025 USD ($) director shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, target payout (as a percent)	1
SMC Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units remaining available (in shares)	600,000
Unrecognized unit-based compensation \| $	$ 7.3
Weighted-average remaining vesting period (in years)	9 months 18 days
Phantom Share Units And Associated Distribution Equivalent Rights \| SMLP LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	149,297
Grant date fair value \| $	$ 5.2
Vesting period (in years)	3 years
Unvested shares (in shares)	355,150
Performance Shares \| SMLP LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	90,081
Grant date fair value \| $	$ 4.4
Vesting period (in years)	3 years
Unvested shares (in shares)	310,048
Common units \| SMLP LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value \| $	$ 0.7
Common units issued (in shares)	18,372
Number of directors \| director	6
Restricted Stock \| SMC Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested shares (in shares)	600,000

Number of directors.

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