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Significant Accounting Policies, Interest Rate Swap Agreement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Interest Rate Swap Agreement [Abstract]
Interest rate swap settlements reclassified from regulatory assets to interest expense	$ 342	$ 221
Overall interest rate swap (gain) loss	815	$ 649
Interest rate swap settlements to be reclassified during the next 12 months	$ 370

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994

+ Details

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- References

No definition available.

+ Details

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X

- Definition

The amount reclassified from regulatory assets to interest expense during the period as a result of interest rate swap settlements. The Company uses regulatory accounting treatment rather than hedge accounting to defer the unrealized gains and losses on its interest rate swap. Instead of the effective portion being recorded as other comprehensive income or loss and the ineffective portion being recognized in earnings using the cash flow hedge accounting rules provided by the derivative accounting standards, the entire unrealized swap value is recorded as a regulatory asset. Based on current ratemaking treatment, the Company expects the unrealized gains and losses to be recognized in rates as a component of interest expense as the swap settlements occur. Swap settlements are recorded in the income statement with the hedged item as interest expense.

+ References

No definition available.

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X

- Definition

The amount of (gains) or losses on an interest rate swap deferred in the period and recorded as a (decrease)/increase in the regulatory asset.

+ References

No definition available.

+ Details

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