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Revenue from Contracts with Customers - Schedule of Revenue from Contracts with Customers Within Non-interest Income (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue from Contract with Customer [Abstract]
Service charges on deposits overdraft fees		$ 783	$ 915	$ 1,580	$ 1,769
Service charges on deposits other		135	137	273	282
Interchange income		516	425	958	786
Loan servicing fees	[1]	337	320	673	639
Office lease income	[1]	156	150	308	300
Gains on sales of loans	[1]	1,468	1,692	2,629	3,081
Bank owned life insurance income	[1]	162	119	321	236
Gains on sales of investment securities	[1]		177	35	324
Gains on sales of real estate owned			25	1	10
Other		696	241	876	415
Total non-interest income		$ 4,253	$ 4,201	$ 7,654	$ 7,842
[1] Not within the scope of ASC 606.

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Interchange income.

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Loan servicing fees.

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Service charges on deposits other.

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Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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The net gain (loss) arising from the lessor's transactions involving the sale, transfer, or termination of financing agreements classified as capital leases.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.

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Amount of fees and commissions from banking, advisory, brokerage, and securities underwriting activities. Activities include, but are not limited to, underwriting securities, private placements of securities, investment advisory and management services, merger and acquisition services, sale and servicing of mutual funds, and other related consulting fees.

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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.

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Amount of revenue earned, classified as other, excluding interest income.

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