Business Combination and Asset Purchase - Summary of Loans Acquired and Contractually Required Payments Receivable (Detail) $ in Thousands	Sep. 30, 2021 USD ($)
Business Acquisition [Line Items]
Total required payments receivable	$ 2,057
Cash flows expected to be collected at acquisition	1,309
Basis in acquired loans at acquisition	1,634
Consumer Real Estate [Member]
Business Acquisition [Line Items]
Total required payments receivable	28
Agricultural Real Estate [Member]
Business Acquisition [Line Items]
Total required payments receivable	1,142
Commercial Real Estate [Member]
Business Acquisition [Line Items]
Total required payments receivable	527
Commercial and Industrial [Member]
Business Acquisition [Line Items]
Total required payments receivable	$ 360

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Fair value at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544

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Amount of cash flows expected to be collected at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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Amount of contractually required payments receivable at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

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