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Allowance for Loan Losses - Performing and Nonperforming Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Performing	$ 413,590	$ 407,201
Total	413,590	407,201
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	388,970	378,999
Total	388,970	378,999
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	9,216	10,372
Total	9,216	10,372
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	15,404	17,830
Total	$ 15,404	$ 17,830

X

- Definition

Performing and nonperforming loans.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

Financing arrangement that represents a contractual right to receive money either on demand or on fixed or determinable dates that are current in regards to payments.

+ References

No definition available.

+ Details

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X

- Definition

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.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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Balance Type:
Period Type:

X

- Details

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