Derivatives (Gains (Losses) Related to Derivative Instruments) (Details) - Mortgage banking activities - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Total loss recognized in income	$ (816)	$ (74)	$ (2,188)	$ (261)
Forward contracts related to mortgage loans to be delivered for sale
Derivative Instruments, Gain (Loss) [Line Items]
Total loss recognized in income	(1,207)	(26)	(3,996)	(417)
Interest rate lock commitments
Derivative Instruments, Gain (Loss) [Line Items]
Total loss recognized in income	$ 391	$ (48)	$ 1,808	$ 156

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL109998890-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959

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