Derivatives - Derivative instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Designated as Hedging Instrument \| Interest rate swaps \| Cash Flow Hedges
Derivative [Line Items]
Notional	$ 90,000	$ 90,000
Fair Value, Asset	523	21
Fair Value, Liability	645	1,252
Not Designated as Hedging Instrument \| Interest rate lock commitments with customers
Derivative [Line Items]
Notional	110,858	136,739
Fair Value, Asset	2,106	4,024
Fair Value, Liability	0	0
Not Designated as Hedging Instrument \| Mandatory and best effort forward commitments with investors
Derivative [Line Items]
Notional	63,107	25,027
Fair Value, Asset	0	0
Fair Value, Liability	553	67
Not Designated as Hedging Instrument \| Mortgage-backed securities
Derivative [Line Items]
Notional	164,000	232,000
Not Designated as Hedging Instrument \| Forward TBA mortgage-backed securities
Derivative [Line Items]
Notional	164,000	232,000
Fair Value, Asset	0	0
Fair Value, Liability	$ 169	$ 1,602

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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- Definition

Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

+ References

No definition available.

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- Definition

Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

+ References

No definition available.

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