Loans, Major Classifications of Loans, Net of Income and Deferred Loan Origination Cost (Details) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($) Segment	Dec. 31, 2017 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 3,118,241	$ 3,122,940
Number of portfolio segments \| Segment	9
Loans held for sale [Abstract]
Loans held for sale	$ 1,145	1,033
Commercial [Member] \| Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	78,647	76,479
Commercial [Member] \| Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,191,628	1,188,680
Commercial [Member] \| Equipment Lease Financing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,683	3,042
Commercial [Member] \| Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	338,635	351,034
Residential [Member] \| Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	63,893	67,358
Residential [Member] \| Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	718,758	709,570
Residential [Member] \| Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	99,593	99,356
Consumer [Member] \| Consumer Direct [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	136,576	137,754
Consumer [Member] \| Consumer Indirect [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 487,828	$ 489,667

Number of portfolio segments through which the Company segregates and evaluates its loan portfolio.

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- Definition

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+ References

No definition available.

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

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- Definition

Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

+ References

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