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Investments (Other Than Temporary Impairment, Credit Losses Recognized In Earnings) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Investments [Abstract]
Beginning balance of cumulative credit-related OTTI	$ 272,000	$ 272,000
Reduction for increases in cash flows expected to be collected	(15,000)
Ending balance of credit-related OTTI	$ 257,000	$ 272,000

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- References

No definition available.

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- Definition

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 8B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=SL6284393-111563

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 8B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=SL6284393-111563

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- Definition

This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held due to increases in cash flows expected to be collected and recognized over the remaining life of the security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 8B
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=SL6284393-111563

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