Fair Value (Narrative) (Details)	12 Months Ended
Dec. 31, 2019 USD ($) item	Dec. 31, 2018 item
Fair Value [Abstract]
Available-For-Sale Securities, Number Of Debt Securities With Unobservable Inputs \| item	1	1
Transfer of assets from level 1 to level 2	$ 0
Transfer of assets from level 2 to level 1	0
Transfer of liabilities from level 1 to level 2	0
Transfer of liabilities from level 2 to level 1	$ 0
Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified In Shareholders' Equity, Number Of Transfers Out Of Level 3	1

Available-For-Sale Securities, Number Of Debt Securities With Unobservable Inputs

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Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified In Shareholders' Equity, Number Of Transfers Out Of Level 3

+ References

No definition available.

+ Details

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- Definition

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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- References

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Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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- Definition

Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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