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Loans - Impaired Loans - Recorded Investment, Unpaid Principal Balance and Related Allowance (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Recorded Investment
With no related allowance recorded	$ 10,993	$ 7,844
With an allowance recorded	8,830	12,515
Total impaired loans	19,823	20,359
Unpaid Principal Balance
With no related allowance recorded	13,860	9,895
With an allowance recorded	9,814	13,936
Total impaired loans	23,674	23,831
Related Allowance
With an allowance recorded	222	352
Finance Leases Financing Receivable [Member]
Recorded Investment
With no related allowance recorded	114
Unpaid Principal Balance
With no related allowance recorded	154
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Recorded Investment
With no related allowance recorded	1,810	1,659
With an allowance recorded	174	396
Unpaid Principal Balance
With no related allowance recorded	2,015	1,782
With an allowance recorded	174	396
Related Allowance
With an allowance recorded	72	3
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Recorded Investment
With no related allowance recorded	516	395
Unpaid Principal Balance
With no related allowance recorded	661	530
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Recorded Investment
With no related allowance recorded	576	1,138
With an allowance recorded	2,968	3,098
Unpaid Principal Balance
With no related allowance recorded	589	1,159
With an allowance recorded	3,951	4,038
Related Allowance
With an allowance recorded	21	97
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Recorded Investment
With no related allowance recorded	2,960
With an allowance recorded		3,099
Unpaid Principal Balance
With no related allowance recorded	3,575
With an allowance recorded		3,575
Related Allowance
With an allowance recorded		139
Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Recorded Investment
With no related allowance recorded	337	353
With an allowance recorded	802	808
Unpaid Principal Balance
With no related allowance recorded	450	459
With an allowance recorded	802	808
Related Allowance
With an allowance recorded	4	4
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Recorded Investment
With no related allowance recorded	3,611	3,359
With an allowance recorded	3,440	3,676
Unpaid Principal Balance
With no related allowance recorded	5,192	4,882
With an allowance recorded	3,440	3,679
Related Allowance
With an allowance recorded	42	46
Residential Portfolio Segment [Member] | Residential Revolving and Junior Liens Loan [Member]
Recorded Investment
With no related allowance recorded	961	884
With an allowance recorded	1,423	1,357
Unpaid Principal Balance
With no related allowance recorded	1,087	1,003
With an allowance recorded	1,423	1,357
Related Allowance
With an allowance recorded	71	49
Consumer Portfolio Segment [Member]
Recorded Investment
With no related allowance recorded	5	7
With an allowance recorded	23	24
Unpaid Principal Balance
With no related allowance recorded	6	7
With an allowance recorded	24	25
Related Allowance
With an allowance recorded	12	13
Construction Loans | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Other Receivable [Member]
Recorded Investment
With no related allowance recorded	103	49
With an allowance recorded		57
Unpaid Principal Balance
With no related allowance recorded	$ 131	73
With an allowance recorded		58
Related Allowance
With an allowance recorded		$ 1

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