Utility Plant Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

The costs of intangible assets as of December 31, 2021 and 2020 are as follows:

	2021		2020
Concession fees	$	6,800	6,800
Purchase premium customer relationships	13,400		13,400
Other intangibles	16,076		14,967
Intangible assets	36,276		35,167
Less: Accumulated amortization
Concession fees	6,596		6,324
Purchase premium customer relationships	1,988		1,094
Other intangibles	7,042		6,479
Net intangible assets	$	20,650	21,270