Fair Values Fair Value By Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 84,239	$ 72,838	$ 57,355	$ 51,068
Available-for-Sale	317,535	300,200
Held-to-Maturity (Approximate Fair Value of $280,338 at December 31, 2018, and $335,901 at December 31, 2017)	283,476	335,907
Held-To-Maturity Securities, at Fair Value	280,338	335,901
Equity securities	1,774	0
Other Investments	15,506	9,949
Net Loans	2,176,019	1,932,184
Deposits	2,345,584	2,245,116
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	54,659	64,966
Federal Home Loan Bank Overnight Advances	234,000	105,000
Federal Home Loan Bank Term Advances	45,000	55,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	84,239	72,838
Available-for-Sale	317,535	300,200
Held-to-Maturity (Approximate Fair Value of $280,338 at December 31, 2018, and $335,901 at December 31, 2017)	283,476	335,907
Other Investments	15,506	9,949
Net Loans	2,176,019	1,932,184
Accrued Interest Receivable	7,035	6,753
Deposits	2,345,584	2,245,116
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	54,659	64,966
Federal Home Loan Bank Overnight Advances	234,000	105,000
Federal Home Loan Bank Term Advances	45,000	55,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Accrued Interest Payable	570	410
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	84,239	72,838
Available-for-Sale	317,535	300,200
Held-To-Maturity Securities, at Fair Value	280,338	335,901
Equity securities	1,774
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	15,506	9,949
Net Loans, Fair Value Disclosure	2,114,372	1,901,046
Accrued Interest Receivable, Fair Value Disclosure	7,035	6,753
Deposits, Fair Value Disclosure	2,338,410	2,236,548
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	54,659	64,966
Federal Home Loan Bank Overnight Advances	234,000	105,000
Federal Home Loan Bank Term Advances, Fair Value Disclosure	44,652	54,781
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	570	410
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	84,239	72,838
Available-for-Sale	0	0
Held-To-Maturity Securities, at Fair Value	0	0
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	0	0
Net Loans, Fair Value Disclosure	0	0
Accrued Interest Receivable, Fair Value Disclosure	0	0
Deposits, Fair Value Disclosure	0	0
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	0	0
Federal Home Loan Bank Overnight Advances	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0
Accrued Interest Payable, Fair Value Disclosure	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
Available-for-Sale	317,535	300,200
Held-To-Maturity Securities, at Fair Value		335,901
Equity securities	1,774
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	15,506	9,949
Net Loans, Fair Value Disclosure	0	0
Accrued Interest Receivable, Fair Value Disclosure	7,035	6,753
Deposits, Fair Value Disclosure	2,338,410	2,236,548
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	54,659	64,966
Federal Home Loan Bank Overnight Advances	234,000	105,000
Federal Home Loan Bank Term Advances, Fair Value Disclosure	44,652	54,781
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	570	410
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
Available-for-Sale	0	0
Held-To-Maturity Securities, at Fair Value	0	0
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	0	0
Net Loans, Fair Value Disclosure	2,114,372	1,901,046
Accrued Interest Receivable, Fair Value Disclosure	0	0
Deposits, Fair Value Disclosure	0	0
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	0	0
Federal Home Loan Bank Overnight Advances	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0
Accrued Interest Payable, Fair Value Disclosure	$ 0	$ 0