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Balance Sheet Components - Other Property and Investments-Net and Other Non-current Assets (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]
Operating lease ROU assets		$ 71,410	$ 71,891
Finance lease ROU assets		46,428	47,338
Non-utility property		18,398	19,508
Equity investments		61,132	59,318
Investment in affiliated trust		11,547	11,547
Notes receivable		14,665	14,454
Deferred compensation assets		9,469	9,174
Assets held for sale	[1]	3,363	3,462
Other		27,552	26,947
Total		$ 263,964	$ 263,639
[1] The Company is in the process of selling certain subsidiary assets associated with Steam Plant Square and Brew Pub

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Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

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