Loans and Allowance for Loan Losses - Loans Held-For-Sale (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-sale	$ 29,020		$ 29,020		$ 1,979
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans to held-for-sale	3,452	$ 0	5,351	$ 1,355
Transfer of loans to held-for-investment	0	0	0	697
Purchase of loans held for investment	803	0	1,439	0
Real Estate \| Commercial property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans to held-for-sale	3,452	0	5,162	0
Real Estate \| Residential property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans to held-for-sale	0	0	189	1,125
Transfer of loans to held-for-investment	0	0	0	697
Purchase of loans held for investment	803	0	1,439	0
Loans held-for-sale	0		0		300
Real Estate \| SBA property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-sale	28,036		28,036		1,411
Commercial and Industrial \| SBA commercial term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans to held-for-sale	0	$ 0	0	$ 230
Loans held-for-sale	$ 984		$ 984		$ 268

Financing Receivable, Reclassification To Held-For-Investment

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Amount of financing receivable reclassified to held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
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Amount of increase from purchase of financing receivable.

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Amount, before valuation allowance, of financing receivable classified as held-for-sale.

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