Information Regarding Contractually Payments Receivable, Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement [Line Items]
Contractually required payments	$ 40,076
Cash flows expected to be collected	50,168
Fair value of loans acquired	38,393
Commercial Financial And Agriculture
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement [Line Items]
Contractually required payments	1,519
Cash flows expected to be collected	1,570
Fair value of loans acquired	1,513
Mortgage-Commercial
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement [Line Items]
Contractually required payments	29,648
Cash flows expected to be collected	37,869
Fair value of loans acquired	28,875
Mortgage-Residential
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement [Line Items]
Contractually required payments	7,933
Cash flows expected to be collected	9,697
Fair value of loans acquired	7,048
Commercial and other
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement [Line Items]
Contractually required payments	976
Cash flows expected to be collected	1,032
Fair value of loans acquired	$ 957

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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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 15

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6379141&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.

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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.

+ References

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