Fair Value of Financial Instruments Fair Value by Balance Sheet Grouping (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 51,810	$ 49,980	$ 44,600	$ 48,832
Available-for-Sale	366,848	457,606	501,574
Held-to-Maturity	297,437	299,261	248,914
Held-to-Maturity Securities, at Fair Value	304,259	302,305	252,691
Federal Home Loan Bank and Federal Reserve Bank Stock	4,583	6,281	6,136
Net Loans	1,329,088	1,252,038	1,190,056
Deposits	1,860,666	1,842,330	1,779,905
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	16,896	11,777	14,738
Federal Home Loan Bank Term Advances	10,000	20,000	30,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	51,810	49,980	44,600
Available-for-Sale	366,848	457,606	501,574
Held-to-Maturity	297,437	299,261	248,914
Federal Home Loan Bank and Federal Reserve Bank Stock	4,583	6,281	6,136
Net Loans	1,329,088	1,252,038	1,190,056
Accrued Interest Receivable	5,849	5,745	5,708
Deposits	1,860,666	1,842,330	1,779,905
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	16,896	11,777	14,738
Federal Home Loan Bank Term Advances	34,000	73,000	70,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	365	439	493
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	51,810	49,980	44,600
Available-for-Sale	366,848	457,606	501,574
Held-to-Maturity Securities, at Fair Value	304,259	302,305	252,691
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value Disclosure	4,583	6,281	6,136
Net Loans, Fair Value Disclosure	1,342,104	1,266,020	1,198,430
Accrued Interest Receivable, Fair Value Disclosure	5,849	5,745	5,708
Deposits, Fair Value Disclosure	1,856,131	1,839,613	1,776,590
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Fair Value Disclosure	16,896	11,777	14,738
Federal Home Loan Bank Term Advances, Fair Value Disclosure	34,427	74,629	70,267
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	365	439	493
Quoted Prices In Active Markets for Indentical Assets (Level 1) [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	51,810	49,980	44,600
Available-for-Sale	0	0	0
Held-to-Maturity Securities, at Fair Value	0	0	0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value Disclosure	4,583	6,281	6,136
Net Loans, Fair Value Disclosure	0	0	0
Accrued Interest Receivable, Fair Value Disclosure	5,849	5,745	5,708
Deposits, Fair Value Disclosure	1,630,950	1,595,103	1,510,867
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Fair Value Disclosure	16,896	11,777	14,738
Federal Home Loan Bank Term Advances, Fair Value Disclosure	24,000	53,000	40,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0	0
Accrued Interest Payable, Fair Value Disclosure	365	439	493
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	0
Available-for-Sale	366,848	457,606	501,574
Held-to-Maturity Securities, at Fair Value	304,259	302,305	252,691
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value Disclosure	0	0	0
Net Loans, Fair Value Disclosure	0	0	0
Accrued Interest Receivable, Fair Value Disclosure	0	0	0
Deposits, Fair Value Disclosure	225,181	244,510	265,723
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Fair Value Disclosure	0	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	10,427	21,629	30,267
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	0	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	0
Available-for-Sale	0	0	0
Held-to-Maturity Securities, at Fair Value	0	0	0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value Disclosure	0	0	0
Net Loans, Fair Value Disclosure	1,342,104	1,266,020	1,198,430
Accrued Interest Receivable, Fair Value Disclosure	0	0	0
Deposits, Fair Value Disclosure	0	0	0
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, 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