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Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) branch	Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)	Jan. 01, 2018 USD ($)
Significant Accounting Policies [Line Items]
Number of full service offices | branch	21
HTM transfers to AFS securities, fair value	$ 0
Real Estate - owner-occupied percentage minimum for collateral	50.00%
Foreclosed assets	$ 0	$ 70,000
Excess tax benefit from exercise of stock options and vesting of restricted shares	165,000	853,000
Retained earnings	$ 120,294,000	$ 103,419,000
Minimum | Core deposits
Significant Accounting Policies [Line Items]
Estimated useful life of intangible asset	5 years
Maximum | Core deposits
Significant Accounting Policies [Line Items]
Estimated useful life of intangible asset	10 years
Premises | Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of premises and equipment	20 years
Premises | Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of premises and equipment	40 years
Leasehold improvements, furniture, fixtures and equipment | Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of premises and equipment	3 years
Leasehold improvements, furniture, fixtures and equipment | Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of premises and equipment	10 years
Retained Earnings | Accounting Standards Update 2016-01 [Member]
Significant Accounting Policies [Line Items]
Effect of accounting principle				$ 144,000
Forecast | Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Right-of-use asset and lease liability			$ 10,000,000

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