Balance Sheet Components Other Non-current Liabilities and Deferred Credits (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Balance Sheet Components [Abstract]
Operating Lease, Liability, Noncurrent	$ 65,565	$ 0
Finance Lease, Liability, Noncurrent	51,750	0
Deferred investment tax credits	30,444	29,725
Asset retirement obligations	20,338	18,266	$ 17,482	$ 15,515
Derivative liabilities	19,685	10,300
Other	13,407	12,740
Total	$ 201,189	$ 71,031

Balance Sheet Components [Abstract]

No definition available.

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- Definition

The noncurrent portion of the reserve for accumulated deferred investment tax credits as of the balance sheet date. This is the remaining investment credit, which will reduce the cost of services collected from ratepayers by a ratable portion over the investment's regulatory life.

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

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-Publisher FASB
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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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- Definition

Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer.

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Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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