Investment Securities (Gross Realized Gains and Losses on Debt Securities Available for Sale) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Gross realized gains on sales	$ 72	$ 9	$ 170	$ 47
Gross realized losses on sales	(2)	(3)	(217)	(5)
Net gains (losses) recognized on debt securities available for sale	70	6	(47)	42
Impairment expense	$ 0	$ (2)	$ (386)	$ (5)

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).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), excluding other-than-temporary impairment (OTTI).

+ References

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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), excluding other-than-temporary impairment (OTTI).

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Other-than-temporary Impairment Loss, Debt and Equity Securities, Available-for-sale

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