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Loans Past Due Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	$ 450,082	$ 427,094
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	1,123	2,042
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	451,205	429,136
Financing Receivable, Recorded Investment, Nonaccrual Status	2,972	2,370
Loans and Leases Receivable, Gross, Carrying Amount	454,177	431,506
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	59,047	49,747
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	8	66
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	59,055	49,813
Financing Receivable, Recorded Investment, Nonaccrual Status	31	37
Loans and Leases Receivable, Gross, Carrying Amount	59,086	49,850
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	39,607	41,223
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	395
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	39,607	41,618
Financing Receivable, Recorded Investment, Nonaccrual Status	0	32
Loans and Leases Receivable, Gross, Carrying Amount	39,607	41,650
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	44,192	49,564
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	43
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	44,192	49,607
Financing Receivable, Recorded Investment, Nonaccrual Status	0	138
Loans and Leases Receivable, Gross, Carrying Amount	44,192	49,745
Commercial Real Estate Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	52,167	46,998
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	52,167	46,998
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Gross, Carrying Amount	52,167	46,998
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	140,486	121,608
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	199
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	140,486	121,807
Financing Receivable, Recorded Investment, Nonaccrual Status	2,188	1,889
Loans and Leases Receivable, Gross, Carrying Amount	142,674	123,696
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	236,845	218,170
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	242
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	236,845	218,412
Financing Receivable, Recorded Investment, Nonaccrual Status	2,188	2,027
Loans and Leases Receivable, Gross, Carrying Amount	239,033	220,439
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	58,195	64,059
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	746	1,282
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	58,941	65,341
Financing Receivable, Recorded Investment, Nonaccrual Status	599	223
Loans and Leases Receivable, Gross, Carrying Amount	59,540	65,564
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	46,871	45,243
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	312	19
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	47,183	45,262
Financing Receivable, Recorded Investment, Nonaccrual Status	140	29
Loans and Leases Receivable, Gross, Carrying Amount	47,323	45,291
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	105,066	109,302
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	1,058	1,301
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	106,124	110,603
Financing Receivable, Recorded Investment, Nonaccrual Status	739	252
Loans and Leases Receivable, Gross, Carrying Amount	106,863	110,855
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	9,517	8,652
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	57	38
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	9,574	8,690
Financing Receivable, Recorded Investment, Nonaccrual Status	14	22
Loans and Leases Receivable, Gross, Carrying Amount	$ 9,588	$ 8,712

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

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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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