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Loans Held for Investment and Allowance for Credit Losses on Loans - Transfers from Loans and Premises and Equipment to Other Real Estate Owned and Repossessed Assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Noncash Investing And Financing Items [Abstract]
Other real estate owned	$ 3,458	$ 2,972
Repossessed assets	965	946
Total	$ 4,423	$ 3,918

X

- Definition

Loans transferred to repossessed assets in non-cash transaction.

+ References

No definition available.

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- Definition

The fair value of assets acquired in noncash investing or financing activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
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- Definition

Value transferred from mortgage loans to real estate owned (REO) in noncash transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586

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