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Fair Value of Financial Instruments - Changes in Fair Value of Assets Classified in the Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Mortgage banking revenue (loans held for sale)
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Total fair value option impact on noninterest income	$ (5,111)	$ 5,131	$ 550
Other income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Total fair value option impact on noninterest income	(1,065)	440	710
Other income | Loans at fair value held for investment
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Total fair value option impact on noninterest income	(251)	(53)	124
Other income | Securities carried at fair value through income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Total fair value option impact on noninterest income	(814)	493	586
Noninterest income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Total fair value option impact on noninterest income	$ (6,176)	$ 5,571	$ 1,260

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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.

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- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123596393&loc=d3e14172-108612

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