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Amount of allowance for credit loss on accounts receivable.

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Amount of increase (decrease) in allowance for credit loss on accounts receivable.

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Amount of increase in allowance for credit loss on accounts receivable, from recovery.

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Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.

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Amount of allowance for credit loss on net investment in sales-type lease.

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Significant Accounting Policies - Credit Losses - ASU 2016-13 $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) numberOfLeases	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]
Accounts Receivable, Allowance for Credit Loss	$ 2,171	$ 2,018
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	1,528
Accounts Receivable, Allowance for Credit Loss, Recovery	$ (1,375)
Number of Net Investments in Sales-Type Leases \| numberOfLeases	2
Sales-type Lease, Net Investment in Lease, Allowance for Credit Loss	$ 0
Regulatory Assets, Noncurrent	301,660	314,579	$ 325,071
COVID-19 Related Costs
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]
Regulatory Assets, Noncurrent	15,100		$ 7,400
Portion of COVID-19 Cost Approved for Recovery in 2022 OR Rate Case
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]
Regulatory Assets, Noncurrent	$ 10,900
Regulatory Asset, Amortization Period	2 years
Residential [Member]
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]
Accounts Receivable, Allowance for Credit Loss	$ 1,485	1,460
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	896
Accounts Receivable, Allowance for Credit Loss, Recovery	(871)
Commercial [Member]
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]
Accounts Receivable, Allowance for Credit Loss	281	178
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	375
Accounts Receivable, Allowance for Credit Loss, Recovery	(272)
Industrial [Member]
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]
Accounts Receivable, Allowance for Credit Loss	178	67
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	173
Accounts Receivable, Allowance for Credit Loss, Recovery	(62)
Accrued unbilled and other [Member]
Accounts Receivable, Noncurrent, Credit Quality Indicator [Line Items]
Accounts Receivable, Allowance for Credit Loss	227	$ 313
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	84
Accounts Receivable, Allowance for Credit Loss, Recovery	$ (170)