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Loans - Summary of Activities in Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2017
Allowance for Loan Losses
Balance at beginning of year			$ 6,775	$ 6,868	$ 6,868
Provision for loan loss	$ 133	$ 132	163	172	324
Loans charged off	(128)	(182)	(335)	(327)	(580)
Recoveries	42	39	80	76	163
Balance at ending of year	6,683		6,683		6,775
Allowance for Unfunded Loan Commitments & Letters of Credit	370		370		274
Total Allowance for Credit Losses	$ 7,053	$ 7,104	$ 7,053	$ 7,104	$ 7,049	$ 6,982	$ 7,065	$ 7,095

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- Definition

Allowance is intended to reflect the potential for losses that may not be funded but for which the bank has made a commitment to fund including letters of credit.

+ References

No definition available.

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- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

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

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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A valuation allowance for financing receivables that are expected to be uncollectible.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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

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