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Loans - Impaired Loans - Average Recorded Investment and Interest Income Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Average Recorded Investment
With no related allowance recorded	$ 11,488	$ 7,012	$ 9,989	$ 10,340
With an allowance recorded	6,161	9,263	9,145	7,450
Total impaired loans	17,649	16,275	19,134	17,790
Interest Income Recognized
With no related allowance recorded	13	13	38	35
With an allowance recorded	75	85	226	204
Total impaired loans	88	98	264	239
Commercial Portfolio Segment [Member]
Average Recorded Investment
With an allowance recorded	149		74
Finance Leases Financing Receivable [Member]
Average Recorded Investment
With no related allowance recorded	43		37
With an allowance recorded	57
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Average Recorded Investment
With no related allowance recorded	1,108	1,263	1,457	1,035
With an allowance recorded	395	259	260	259
Interest Income Recognized
With no related allowance recorded	2	2	5	5
With an allowance recorded	3	22	11	22
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Average Recorded Investment
With no related allowance recorded	1,045	417	993	375
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Average Recorded Investment
With no related allowance recorded	566	91	851	653
With an allowance recorded	55		1,577
Interest Income Recognized
With an allowance recorded	2		4
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Average Recorded Investment
With no related allowance recorded	2,960		1,480
With an allowance recorded		3,099	1,549
Interest Income Recognized
With an allowance recorded				1,550
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member]
Average Recorded Investment
With no related allowance recorded	1,130		561
Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Average Recorded Investment
With no related allowance recorded	381	368	366	369
With an allowance recorded	795	812	799	820
Interest Income Recognized
With an allowance recorded	13	11	35	33
Residential Portfolio Segment [Member] | Multifamily
Average Recorded Investment
With no related allowance recorded				2,361
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Average Recorded Investment
With no related allowance recorded	3,078	4,050	3,209	4,532
With an allowance recorded	3,321	3,678	3,478	3,576
Interest Income Recognized
With no related allowance recorded	11	11	32	29
With an allowance recorded	37	35	117	108
Residential Portfolio Segment [Member] | Residential Revolving and Junior Liens Loan [Member]
Average Recorded Investment
With no related allowance recorded	1,075	687	958	880
With an allowance recorded	1,370	1,371	1,358	1,203
Interest Income Recognized
With no related allowance recorded			1	1
With an allowance recorded	20	17	59	41
Consumer Portfolio Segment [Member]
Average Recorded Investment
With no related allowance recorded	4	15	6	10
With an allowance recorded	19	14	21	13
Construction Loans | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Other Receivable [Member]
Average Recorded Investment
With no related allowance recorded	$ 98	121	71	125
With an allowance recorded		$ 30	$ 29	$ 29

X

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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