Fair Values Fair Value By Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 51,068	$ 46,295	$ 49,980	$ 48,832
Available-for-sale Securities	402,309	366,139
Held-to-Maturity Securities	320,611	302,024
Held-to-maturity Securities, at Fair Value	325,930	308,566
Federal Home Loan Bank and Federal Reserve Bank Stock	8,839	4,851
Net Loans	1,557,914	1,397,698
Deposits	2,030,423	1,902,948
Federal Home Loan Bank Term Advances	55,000	10,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	51,068	46,295
Available-for-sale Securities	402,309	366,139
Held-to-Maturity Securities	320,611	302,024
Federal Home Loan Bank and Federal Reserve Bank Stock	8,839	4,851
Net Loans	1,557,914	1,397,698
Accrued Interest Receivable	6,360	5,834
Deposits	2,030,423	1,902,948
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	23,173	19,421
Federal Home Loan Bank Term Advances	137,000	51,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Accrued Interest Payable	231	274
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	51,068	46,295
Available-for-sale Securities	402,309	366,139
Held-to-maturity Securities, at Fair Value	325,930	308,566
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	8,839	4,851
Net Loans, Fair Value Disclosure	1,557,511	1,405,454
Accrued Interest Receivable, Fair Value Disclosure	6,360	5,834
Deposits, Fair Value Disclosure	2,024,224	1,899,682
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	19,421	19,421
Federal Home Loan Bank Term Advances, Fair Value Disclosure	137,063	51,258
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	231	274
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	51,068	46,295
Available-for-sale Securities	0	0
Held-to-maturity Securities, at Fair Value	0	0
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	8,839	4,851
Net Loans, Fair Value Disclosure	0	0
Accrued Interest Receivable, Fair Value Disclosure	6,360	5,834
Deposits, Fair Value Disclosure	1,840,606	1,697,105
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	19,421	19,421
Federal Home Loan Bank Term Advances, Fair Value Disclosure	82,000	41,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0
Accrued Interest Payable, Fair Value Disclosure	231	274
Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Available-for-sale Securities	402,309	366,139
Held-to-maturity Securities, at Fair Value	325,930	308,566
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	183,618	202,577
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	55,063	10,258
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Available-for-sale Securities	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	1,557,511	1,405,454
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 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