Fair Values - Fair Value by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 62,695	$ 84,239	$ 60,741	$ 72,838
Available-for-Sale	285,878	317,535	325,387
Held-To-Maturity Securities, at Amortized Cost	262,541	283,476	297,885
Held-To-Maturity Securities, at Fair Value	266,068	280,338	292,605
Equity Securities	1,850	1,774	1,802
Net Loans	2,259,613	2,176,019	2,038,222
Deposits	2,503,753	2,345,584	2,304,781
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	51,149	54,659	60,248
Federal Home Loan Bank Overnight Advances	83,000	234,000	136,000
Federal Home Loan Bank Term Advances	30,000	45,000	45,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	62,695		60,741
Available-for-Sale	285,878	317,535	325,387
Held-To-Maturity Securities, at Amortized Cost	262,541	283,476	297,885
Equity Securities	1,850	1,774	1,802
Federal Home Loan Bank and Federal Reserve Bank Stock	8,202	15,506	11,089
Net Loans	2,259,613	2,176,019	2,038,222
Accrued Interest Receivable	7,491	7,035	6,729
Deposits	2,503,753	2,345,584	2,304,781
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	51,149	54,659	60,248
Federal Home Loan Bank Overnight Advances	83,000	234,000	136,000
Federal Home Loan Bank Term Advances	30,000	45,000	45,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	1,187	570	540
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	62,695	84,239	60,741
Available-for-Sale	285,878	317,535	325,387
Held-To-Maturity Securities, at Fair Value	266,068	280,338	292,605
Equity Securities	1,850	1,774	1,802
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	8,202	15,506	11,089
Net Loans, at Fair Value	2,218,244	2,114,372	1,971,756
Accrued Interest Receivable, Fair Value Disclosure	7,491	7,035	6,729
Deposits, at Fair Value	2,499,849	2,338,410	2,295,796
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, at Fair Value	51,149	54,659	60,248
Federal Home Loan Bank Overnight Advances, Fair Value Disclosure	83,000	234,000	136,000
Federal Home Loan Bank Term Advances, Fair Value Disclosure	29,943	44,652	44,495
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	1,187	570	540
Quoted Prices In Active Markets for Indentical Assets (Level 1) | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	62,695	84,239	60,741
Available-for-Sale	0	0	0
Held-To-Maturity Securities, at Fair Value	0	0	0
Equity Securities	0		0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	0	0	0
Net Loans, at Fair Value	0	0	0
Accrued Interest Receivable, Fair Value Disclosure	0	0	0
Deposits, at Fair Value	0	0	0
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, at Fair Value	0	0	0
Federal Home Loan Bank Overnight Advances, Fair Value Disclosure	0	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	0	0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0	0
Accrued Interest Payable, Fair Value Disclosure	0	0	0
Significant Other Observable Inputs (Level 2) | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0	0
Available-for-Sale	285,878	317,535	325,387
Held-To-Maturity Securities, at Fair Value	266,068	280,338	292,605
Equity Securities	1,850	1,774	1,802
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	8,202	15,506	11,089
Net Loans, at Fair Value	0	0	0
Accrued Interest Receivable, Fair Value Disclosure	7,491	7,035	6,729
Deposits, at Fair Value	2,499,849	2,338,410	2,295,796
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, at Fair Value	51,149	54,659	60,248
Federal Home Loan Bank Overnight Advances, Fair Value Disclosure	83,000	234,000	136,000
Federal Home Loan Bank Term Advances, Fair Value Disclosure	29,943	44,652	44,495
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	1,187	570	540
Significant Unobservable Inputs (Level 3) | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0	0
Available-for-Sale	0	0	0
Held-To-Maturity Securities, at Fair Value	0	0	0
Equity Securities	0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	0	0	0
Net Loans, at Fair Value	2,218,244	2,114,372	1,971,756
Accrued Interest Receivable, Fair Value Disclosure	0	0	0
Deposits, at Fair Value	0	0	0
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, at Fair Value	0	0	0
Federal Home Loan Bank Overnight Advances, Fair Value Disclosure	0	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	0	0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0	0
Accrued Interest Payable, Fair Value Disclosure	$ 0	$ 0	$ 0