Revenue Recognition Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue from Contracts with Customers [Line Items]
Insurance commissions	$ 4,320	$ 4,005	$ 4,022
Noninterest Income, Other Operating Income	1,022	750	423
Non-interest income within the scope of other ASC topics	2,420	1,526	2,467
Noninterest Income	17,422	14,427	11,600
Revenue in Scope ASC 606 [Member]
Revenue from Contracts with Customers [Line Items]
Insurance commissions	4,320	4,005	4,022
Noninterest Income, Other Operating Income	246	227	137
Total Revenue in ASC 606	15,002	12,901	9,133
Deposit Account [Member]
Revenue from Contracts with Customers [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	4,631	4,109	2,656
Deposit Account [Member] \| Revenue in Scope ASC 606 [Member]
Revenue from Contracts with Customers [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	4,631	4,109	2,656
Credit and Debit Card [Member]
Revenue from Contracts with Customers [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	3,152	2,697	1,869
Credit and Debit Card [Member] \| Revenue in Scope ASC 606 [Member]
Revenue from Contracts with Customers [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	3,152	2,697	1,869
Fiduciary and Trust [Member]
Revenue from Contracts with Customers [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,653	1,863	449
Fiduciary and Trust [Member] \| Revenue in Scope ASC 606 [Member]
Revenue from Contracts with Customers [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 2,653	$ 1,863	$ 449

Non-interest income within the scope of other ASC topics

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[Line Items] for Revenue from Contracts with Customers [Table]

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Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products.

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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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Amount, including 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.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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