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Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements (Carrying Amount and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Financial Assets: |  |
Investment securities available for sale | $ 528,539 | $ 507,582
Carrying Amount [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 53,041 | 48,623
Investment securities available for sale | 528,539 | 507,582
Loans and leases, net held for investment | 1,145,888 | 1,120,773
Collateral dependent impaired loans | 1,983 | 3,829
Loans held-for-sale | 0 |
Cash surrender value of life insurance policies | 43,829 | 44,140
Other investments | 7,945 | 7,546
Investment in limited partnerships | 8,568 | 6,217
Accrued interest receivable | 5,697 | 5,808
Deposits: |  |
Noninterest-bearing | 433,328 | 432,251
Interest-bearing | 1,052,746 | 1,032,377
Fed funds purchased and repurchase agreements | 14,294 | 9,405
Short-term borrowings | 93,700 | 75,300
Long-term borrowings | 0 | 2,000
Subordinated debentures | 30,928 | 30,928
Limited partnership capital commitment | 3,070 | 795
Accrued Interest Payable | 128 | 116
Fair Value [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 53,041 | 48,623
Investment securities available for sale | 528,539 | 507,582
Loans and leases, net held for investment | 1,172,194 | 1,136,386
Collateral dependent impaired loans | 1,983 | 3,829
Loans held-for-sale | 0 |
Cash surrender value of life insurance policies | 43,829 | 44,140
Other investments | 7,945 | 7,546
Investment in limited partnerships | 8,568 | 6,217
Accrued interest receivable | 5,697 | 5,808
Deposits: |  |
Noninterest-bearing | 433,328 | 432,251
Interest-bearing | 929,491 | 1,032,547
Fed funds purchased and repurchase agreements | 14,294 | 9,405
Short-term borrowings | 93,700 | 75,300
Long-term borrowings | 0 | 2,001
Subordinated debentures | 8,847 | 7,383
Limited partnership capital commitment | 3,070 | 795
Accrued Interest Payable | 128 | 116
Fair Value [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 53,041 | 48,623
Investment securities available for sale | 1,127 | 1,296
Loans and leases, net held for investment | 0 | 0
Collateral dependent impaired loans | 0 | 0
Loans held-for-sale | 0 |
Cash surrender value of life insurance policies | 0 | 0
Other investments | 0 | 0
Investment in limited partnerships | 0 | 0
Accrued interest receivable | 0 | 0
Deposits: |  |
Noninterest-bearing | 433,328 | 432,251
Interest-bearing | 0 | 0
Fed funds purchased and repurchase agreements | 0 | 0
Short-term borrowings | 0 | 0
Long-term borrowings | 0 | 0
Subordinated debentures | 0 | 0
Limited partnership capital commitment | 0 | 0
Accrued Interest Payable | 0 | 0
Fair Value [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 0 | 0
Investment securities available for sale | 527,412 | 506,286
Loans and leases, net held for investment | 1,172,194 | 1,136,386
Collateral dependent impaired loans | 1,983 | 3,829
Loans held-for-sale | 0 |
Cash surrender value of life insurance policies | 43,829 | 44,140
Other investments | 7,945 | 7,546
Investment in limited partnerships | 8,568 | 6,217
Accrued interest receivable | 5,697 | 5,808
Deposits: |  |
Noninterest-bearing | 0 | 0
Interest-bearing | 929,491 | 1,032,547
Fed funds purchased and repurchase agreements | 14,294 | 9,405
Short-term borrowings | 93,700 | 75,300
Long-term borrowings | 0 | 2,001
Subordinated debentures | 8,847 | 7,383
Limited partnership capital commitment | 3,070 | 795
Accrued Interest Payable | 128 | 116
Fair Value [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 0 | 0
Investment securities available for sale | 0 | 0
Loans and leases, net held for investment | 0 | 0
Collateral dependent impaired loans | 0 | 0
Loans held-for-sale | 0 |
Cash surrender value of life insurance policies | 0 | 0
Other investments | 0 | 0
Investment in limited partnerships | 0 | 0
Accrued interest receivable | 0 | 0
Deposits: |  |
Noninterest-bearing | 0 | 0
Interest-bearing | 0 | 0
Fed funds purchased and repurchase agreements | 0 | 0
Short-term borrowings | 0 | 0
Long-term borrowings | 0 | 0
Subordinated debentures | 0 | 0
Limited partnership capital commitment | 0 | 0
Accrued Interest Payable | $ 0 | $ 0

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Definition Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Surrender Value -URI http://asc.fasb.org/extlink&oid=6507153 + Details
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- Definition Fair value portion of arrangements with third parties, including, but not limited to, operating lease arrangement and arrangement in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(25)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value portion of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price. + References No definition available. + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Glossary Loan -URI http://asc.fasb.org/extlink&oid=6517073 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. + References No definition available. + Details
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