Contractual payment of principal or interest past due period.

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- Definition

Financing Receivable Deferred Fees And Costs

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No definition available.

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- Definition

Financing receivable modifications number of additional contracts.

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No definition available.

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Financing receivable modifications number of existing contracts.

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No definition available.

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- Definition

Financing receivable other obligations.

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No definition available.

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- Definition

Financing receivables during modification impaired troubled debt restructuring write down.

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No definition available.

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- Definition

Financing receivables impaired number of troubled debt restructuring write-down.

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No definition available.

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- Definition

Loan maturity period.

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No definition available.

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- Definition

Mortgage lines of credit period.

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No definition available.

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- Definition

Non mortgage lines of credit period.

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No definition available.

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- Definition

Non-residential loans and lease charged off period.

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No definition available.

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- Definition

Number of consumer mortgage loans secured by residential real estate properties foreclosure proceedings in process.

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No definition available.

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- Definition

Percentage of property securing loan.

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No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 1
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Loans and Allowance for Loan and Lease Losses (Narrative) (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017 USD ($) Loan	Sep. 30, 2016 USD ($) Loan	Sep. 30, 2017 USD ($) Loan	Sep. 30, 2016 USD ($) Loan	Dec. 31, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Contractual payment of principal or interest past due period for discontinuing accrual of interest			90 days
Financing Receivable, Allowance for Credit Losses	$ 7,502,000	$ 7,482,000	$ 7,502,000	$ 7,482,000	$ 7,183,000	$ 7,713,000	$ 6,912,000	$ 6,168,000
Non-residential loans and lease charged off period			120 days
Financing Receivable Deferred Fees And Costs	430,000		$ 430,000		196,000
Financing Receivable, Modifications, Recorded Investment	6,868,000		6,868,000		3,515,000
Charge-offs associated with troubled debt restructured loans	$ 139,000	$ 0	$ 139,000	$ 0
Number of troubled debt restructured loans \| Loan	0	0	0	0
Number of charge-offs associated with troubled debt restructured loans \| Loan	1		1
Number of additional troubled debt restructured loans \| Loan	2	0	2	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 7,754,000		5,368,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			7,948,000		4,823,000
Other Real Estate	$ 33,000		$ 33,000		57,000
Number of consumer mortgage loans foreclosure proceedings in process \| Loan			4
Loans for which formal foreclosure proceedings are in process	546,000		$ 546,000
Accruing [Member] \| One Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	499,000		499,000
Accruing [Member] \| Five Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment					877,000
Nonaccruing [Member] \| Eight Loans With Five Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,317,000		6,317,000
Nonaccruing [Member] \| Four Large Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,252,000		$ 6,252,000
Nonaccruing [Member] \| Ten Loans With Four Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment					2,638,000
Nonaccruing [Member] \| Two Large Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment					2,170,000
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Maximum loan maturity period			30 years
Residential Mortgage [Member] \| Residential Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	539,000	$ 532,000	$ 539,000	$ 532,000	541,000	539,000	521,000	534,000
Financing Receivable, Modifications, Recorded Investment	616,000		616,000		639,000
Financing Receivable, Modifications, Pre-Modification Recorded Investment			759,000		759,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			757,000		757,000
Residential Mortgage [Member] \| Accruing [Member] \| Four Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	551,000		$ 551,000
Residential Mortgage [Member] \| Accruing [Member] \| Four Unrelated Borrowers [Member] \| Residential Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment					571,000
Minimum [Member] \| Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan-to-value ratio			100.00%
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Maximum term on non-mortgage lines of credit			1 year
Commercial and Industrial [Member] \| Commercial Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	1,799,000	2,132,000	$ 1,799,000	2,132,000	1,580,000	1,628,000	1,372,000	1,393,000
Financing Receivable, Modifications, Recorded Investment	4,460,000		4,460,000		5,000
Financing Receivable, Modifications, Pre-Modification Recorded Investment			4,110,000		40,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			4,460,000		35,000
Commercial and Industrial [Member] \| Nonaccruing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,460,000		4,460,000
Financing Receivable, Modifications, Pre-Modification Recorded Investment			4,110,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 4,460,000
Number of existing troubled debt restructured loans \| Loan			4
Charge-offs associated with troubled debt restructured loans at the time of modification			$ 0
Financing receivable, other obligations	$ 350,000		$ 350,000
Commercial and Industrial [Member] \| LTV Less than 80 Percent [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan-to-value ratio			80.00%
Private Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan-to-value ratio			85.00%
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Maximum loan maturity period			20 years
Percentage of appraised Value of property securing loan	85.00%		85.00%
Mortgage Lines Of Credit Period			5 years
Financing Receivable, Allowance for Credit Losses	$ 437,000	352,000	$ 437,000	352,000	379,000	404,000	325,000	317,000
Unfunded Lending Commitments [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	127,000		127,000		120,000
Commercial Real Estate [Member] \| Commercial Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	4,470,000	$ 4,335,000	4,470,000	$ 4,335,000	4,323,000	$ 4,981,000	$ 4,241,000	$ 3,552,000
Financing Receivable, Modifications, Recorded Investment	1,792,000		1,792,000		2,871,000
Financing Receivable, Modifications, Pre-Modification Recorded Investment			2,885,000		4,569,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			2,731,000		4,031,000
Commercial Real Estate [Member] \| Accruing [Member] \| Other Borrower [Member] \| Commercial Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment					$ 306,000
Commercial Real Estate [Member] \| Nonaccruing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 299,000		299,000
Financing Receivable, Modifications, Pre-Modification Recorded Investment			362,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 300,000
Number of existing troubled debt restructured loans \| Loan			2
Charge-offs associated with troubled debt restructured loans at the time of modification			$ 62,000