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Loans Held for Sale - Summary of Changes in Valuation Allowance of Loans Held for Sale (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance - Valuation allowance	$ (6,180)	$ (6,643)	$ (11,569)
(Provision for) reversal of valuation allowance	1,802	(1,144)	(2,537)
Transfer to (from) Liability for indemnification obligations (Other liabilities)	7	(68)	(403)
Sales of loans	0	1,675	7,866
Ending balance - Valuation allowance	$ (4,372)	$ (6,180)	$ (6,643)

X

- Definition

Increase in valuation allowance arising due to transfer from liabilities for indemnification obligation.

+ References

No definition available.

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X

- Definition

Amount of reduction of allowance reserve for credit loss arising from sale of loan and lease portfolios.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

Amount of allowance for credit loss on financing receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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