Summary of Significant Accounting Policies Financial Instruments and Investments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Bank Owned Life Insurance	$ 7,086
Value of life insurance contracts	3,829
Available for Sale Marketable Security, Shares Sold		100,000
Proceeds from sale of California Water Service Group stock	0	$ 4,112	$ 0
Fees Incurred on Sale of Available for Sale Securities		9
Gain on sale of California Water Service Group stock	$ 0	104	$ 0
Available for Sales Securities, Tax on Realized Gain		29
Debt and Equity Securities, Gain (Loss)		$ 75

Available for Sale Marketable Security, Shares Sold

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Available for Sales Securities, Tax on Realized Gain

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Fees Incurred on Sale of Available for Sale Securities

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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This item represents the amount that could be realized under a life insurance contract or contracts owned by the Entity as of the date of the statement of financial position. Such Entity-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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The cash inflow associated with the sale of equity securities classified as available-for-sale securities.

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