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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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Average Recorded Investment
With no related allowance recorded	$ 7,012	$ 20,197	$ 10,340	$ 20,636
With an allowance recorded	9,263	145	7,450	551
Total impaired loans	16,275	20,342	17,790	21,187
Interest Income Recognized
With no related allowance recorded	13	83	35	184
With an allowance recorded	85	2	204	2
Total impaired loans	98	85	239	186
Commercial
Average Recorded Investment
With no related allowance recorded		212		123
Lease financing receivables
Average Recorded Investment
With no related allowance recorded		208		281
With an allowance recorded		120
Real estate - commercial | Owner occupied general purpose
Average Recorded Investment
With no related allowance recorded	1,263	458	1,035	1,169
With an allowance recorded	259		259
Interest Income Recognized
With no related allowance recorded	2		5
With an allowance recorded	22		22
Real estate - commercial | Owner occupied special purpose
Average Recorded Investment
With no related allowance recorded	417	363	375	372
Real estate - commercial | Non-owner occupied general purpose
Average Recorded Investment
With no related allowance recorded	91	1,180	653	1,481
With an allowance recorded				123
Interest Income Recognized
With no related allowance recorded		1		2
Real estate - commercial | Non-owner occupied special purpose
Average Recorded Investment
With no related allowance recorded				507
With an allowance recorded	3,099		1,550
Real estate - commercial | Retail properties
Average Recorded Investment
With no related allowance recorded		1,129		1,146
Real estate - residential | Investor
Average Recorded Investment
With no related allowance recorded	368	1,475	369	1,607
With an allowance recorded	812		820
Interest Income Recognized
With no related allowance recorded		16		36
With an allowance recorded	11		33
Real estate - residential | Multifamily
Average Recorded Investment
With no related allowance recorded		4,791	2,361	2,379
Real estate - residential | Owner occupied
Average Recorded Investment
With no related allowance recorded	4,050	8,179	4,532	8,987
With an allowance recorded	3,678		3,576	402
Interest Income Recognized
With no related allowance recorded	11	54	29	119
With an allowance recorded	35		108
Real estate - residential | Revolving and junior liens
Average Recorded Investment
With no related allowance recorded	687	1,981	880	2,237
With an allowance recorded	1,371	25	1,203	26
Interest Income Recognized
With no related allowance recorded		12	1	27
With an allowance recorded	17	2	41	2
Consumer
Average Recorded Investment
With no related allowance recorded	15	9	10	104
With an allowance recorded	14		13
Construction Loans | Real estate - commercial | Commercial speculative
Average Recorded Investment
With no related allowance recorded		34		37
Construction Loans | Real estate - commercial | All other
Average Recorded Investment
With no related allowance recorded	121	$ 178	125	$ 206
With an allowance recorded	$ 30		$ 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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