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Derivative Instruments - Gain (loss) recognized on derivatives instruments (Details) - Not designated as hedging - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Gain (loss) recognized on derivative instruments
Gain (loss) recognized on derivatives instruments	$ 2,540	$ 569	$ 1,010	$ 2,150
Interest rate lock commitments | Mortgage banking
Gain (loss) recognized on derivative instruments
Gain (loss) recognized on derivatives instruments	4,352	492	5,579	2,281
Forward loan sales commitments | Mortgage banking
Gain (loss) recognized on derivative instruments
Gain (loss) recognized on derivatives instruments	117	407	783	653
TBA mortgage backed securities | Mortgage banking
Gain (loss) recognized on derivative instruments
Gain (loss) recognized on derivatives instruments	$ (1,929)	$ (330)	$ (5,352)	$ (784)

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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- Definition

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+ References

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