Disclosures about Fair Value of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Disclosures about Fair Value of Assets and Liabilities
Mortgage loans in process of securitization	$ 197,074	$ 154,194
Securities available for sale	679,518	323,337
Loans held for sale	85,516	82,192
Servicing rights	143,867	146,248
Recurring
Disclosures about Fair Value of Assets and Liabilities
Mortgage loans in process of securitization	197,074	154,194
Loans held for sale	85,516	82,192
Servicing rights	143,867	146,248
Recurring \| Interest rate lock commitments
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	218	28
Derivative liabilities	4	23
Recurring \| Forward contracts
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	2	46
Derivative liabilities	235	52
Recurring \| Interest rate swaps
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	1,694	3,030
Recurring \| Interest rate swaps (back-to-back)
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	2,461	3,041
Derivative liabilities	2,461	3,041
Level 2 \| Recurring
Disclosures about Fair Value of Assets and Liabilities
Mortgage loans in process of securitization	197,074	154,194
Loans held for sale	85,516	82,192
Level 2 \| Recurring \| Forward contracts
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	2	46
Derivative liabilities	235	52
Level 2 \| Recurring \| Interest rate swaps
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	1,694	3,030
Level 2 \| Recurring \| Interest rate swaps (back-to-back)
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	2,461	3,041
Derivative liabilities	2,461	3,041
Level 3 \| Interest rate lock commitments
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	218	28
Derivative liabilities	4	23
Level 3 \| Recurring
Disclosures about Fair Value of Assets and Liabilities
Servicing rights	143,867	146,248
Level 3 \| Recurring \| Interest rate lock commitments
Disclosures about Fair Value of Assets and Liabilities
Derivative assets	218	28
Derivative liabilities	4	23
Treasury notes
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	175,099	36,280
Treasury notes \| Recurring
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	175,099	36,280
Treasury notes \| Level 1 \| Recurring
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	175,099	36,280
Federal agencies
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	290,331	271,890
Federal agencies \| Recurring
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	290,331	271,890
Federal agencies \| Level 2 \| Recurring
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	290,331	271,890
Mortgage-backed - Government-sponsored entity (GSE)
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	214,088	15,167
Mortgage-backed - Government-sponsored entity (GSE) \| Recurring
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	214,088	15,167
Mortgage-backed - Government-sponsored entity (GSE) \| Level 2 \| Recurring
Disclosures about Fair Value of Assets and Liabilities
Securities available for sale	$ 214,088	$ 15,167

Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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-Publisher FASB
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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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