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Revenue Recognition - Summary of Noninterest Income Segregated By Revenue Streams In-scope and Out-of-scope of Topic 606 (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Noninterest income
Service charges	$ 1,552	$ 1,359	$ 3,008	$ 2,493
ATM/Interchange fees	951	588	1,857	1,142
Wealth management fees	911	836	1,758	1,688
Tax refund processing fees	550	550	2,750	2,750
Other	265	228	396	448
Noninterest Income (in-scope of Topic 606)	4,229	3,561	9,769	8,521
Noninterest Income (out-of-scope of Topic 606)	875	829	1,619	1,485
Total noninterest income	$ 5,104	$ 4,390	$ 11,388	$ 10,006

X

- Definition

Automated teller machine and interchange fees.

+ References

No definition available.

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- Definition

Revenue from contract with customer, other.

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- Definition

Amount of revenue that is not accounted for under Topic 606.

+ References

No definition available.

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- Definition

Service charges.

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No definition available.

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- Definition

Revenue from providing income tax refund processing services.

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- Definition

Wealth management fees.

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- Definition

The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13)
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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