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Utility Plant Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets
The costs of intangible assets as of December 31, 2022 and 2021 are as follows:
20222021
Concession fees$6,800 6,800 
Purchase premium customer relationships13,400 13,400 
Other intangibles15,759 16,076 
Intangible assets35,959 36,276 
Less: Accumulated amortization
Concession fees6,693 6,596 
Purchase premium customer relationships2,881 1,988 
Other intangibles10,018 7,042 
Net intangible assets$16,367 20,650