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Investments (Realized Gains (Losses)) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)
Gain (Loss) on Securities [Line Items]
Proceeds from Sale of Debt Securities, Available-for-sale			$ 28,828,000	$ 7,254,000
Debt Securities [Member]
Gain (Loss) on Securities [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss, Writeoff	$ 0	$ 0	0	0
Proceeds from Sale of Debt Securities, Available-for-sale	27,728,000	0	28,828,000	7,254,000
Debt Securities, Available-for-sale, Realized Gain	101,000	0	101,000	100,000
Debt Securities, Available-for-sale, Realized Loss	$ (102,000)	$ 0	$ (102,000)	$ 1,000
Number of Debt Securities Sold	16	0	17	18

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Number of Debt Securities Sold

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Amount of writeoff of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 9
-Subparagraph (g)
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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-SubTopic 10
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