Loans and Allowance for Credit Losses (Allowance for Credit Losses on Loans Receivable with Impairment) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	$ 24,762	$ 27,588
Loans collectively evaluated for impairment	835,791	767,526
Total loans	860,553	795,114
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	1,211	1,401
Loans collectively evaluated for impairment	7,403	6,915
Loans and Leases Receivable, Allowance, Total	8,614	8,316
Commercial and Residential Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	9,554	11,598
Loans collectively evaluated for impairment	69,651	74,034
Total loans	79,205	85,632
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	831	619
Loans collectively evaluated for impairment	1,187	1,027
Loans and Leases Receivable, Allowance, Total	2,018	1,646
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	7,928	7,946
Loans collectively evaluated for impairment	316,545	299,117
Total loans	324,473	307,063
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	179	435
Loans collectively evaluated for impairment	1,901	1,746
Loans and Leases Receivable, Allowance, Total	2,080	2,181
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	7,145	7,762
Loans collectively evaluated for impairment	371,661	322,491
Total loans	378,806	330,253
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	201	340
Loans collectively evaluated for impairment	2,986	2,659
Loans and Leases Receivable, Allowance, Total	3,187	2,999
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	36	161
Loans collectively evaluated for impairment	70,884	64,750
Total loans	70,920	64,911
Allowance for credit losses allocated to:
Loans collectively evaluated for impairment	917	558
Loans and Leases Receivable, Allowance, Total	917	558
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	99	121
Loans collectively evaluated for impairment	7,050	7,134
Total loans	7,149	7,255
Allowance for credit losses allocated to:
Loans individually evaluated for impairment		7
Loans collectively evaluated for impairment	154	149
Loans and Leases Receivable, Allowance, Total	154	156
Unallocated Financing Receivables [Member]
Allowance for credit losses allocated to:
Loans collectively evaluated for impairment	258	776
Loans and Leases Receivable, Allowance, Total	$ 258	$ 776

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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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.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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

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