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Loans - Impaired Loans - Average Recorded Investment and Interest Income Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Average Recorded Investment
With no related allowance recorded	$ 11,350	$ 18,047	$ 20,982
With an allowance recorded	8,886	3,153	605
Total impaired loans	20,236	21,200	21,587
Interest Income Recognized
With no related allowance recorded	48	45	323
With an allowance recorded	278	201
Total impaired loans	326	246	323
Commercial
Average Recorded Investment
With no related allowance recorded		120	155
With an allowance recorded			2
Lease financing receivables
Average Recorded Investment
With no related allowance recorded	89	272	183
Real estate - commercial | Owner occupied general purpose
Average Recorded Investment
With no related allowance recorded	1,057	1,168	2,098
With an allowance recorded	198
Interest Income Recognized
With no related allowance recorded	8		87
With an allowance recorded	29
Real estate - commercial | Owner occupied special purpose
Average Recorded Investment
With no related allowance recorded	369	364	574
Real estate - commercial | Non-owner occupied general purpose
Average Recorded Investment
With no related allowance recorded	1,150	1,453	1,395
With an allowance recorded	1,549	123	123
Interest Income Recognized
With no related allowance recorded			2
Real estate - commercial | Non-owner occupied special purpose
Average Recorded Investment
With no related allowance recorded		507	507
With an allowance recorded	1,549
Real estate - commercial | Retail properties
Average Recorded Investment
With no related allowance recorded	541	1,130	589
Real estate - commercial | Farm
Average Recorded Investment
With no related allowance recorded			636
Real estate - residential | Investor
Average Recorded Investment
With no related allowance recorded	362	1,106	1,874
With an allowance recorded	818	414
Interest Income Recognized
With no related allowance recorded			47
With an allowance recorded	43	43
Real estate - residential | Multifamily
Average Recorded Investment
With no related allowance recorded	2,362	2,362
Real estate - residential | Owner occupied
Average Recorded Investment
With no related allowance recorded	4,283	7,516	10,181
With an allowance recorded	3,560	2,123	457
Interest Income Recognized
With no related allowance recorded	39	44	158
With an allowance recorded	150	123
Real estate - residential | Revolving and junior liens
Average Recorded Investment
With no related allowance recorded	1,005	1,804	2,608
With an allowance recorded	1,171	493	23
Interest Income Recognized
With no related allowance recorded	1	1	29
With an allowance recorded	56	35
Consumer
Average Recorded Investment
With no related allowance recorded	7	4
With an allowance recorded	12
Construction Loans | Real estate - commercial | Commercial speculative
Average Recorded Investment
With no related allowance recorded		37	79
Construction Loans | Real estate - commercial | All other
Average Recorded Investment
With no related allowance recorded	125	$ 204	$ 103
With an allowance recorded	$ 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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-Topic 310
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