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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Loans by Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 203,733	$ 200,387
Commercial real estate — non-owner occupied	487,842	470,236
Land development	45,009	40,154
Construction	132,271	125,157
Multi-family	174,664	136,978
1-4 family	35,729	44,976
Total commercial real estate	1,079,248	1,017,888
Commercial and industrial	457,932	429,002
Direct financing leases, net	31,090	30,787
Home equity and second mortgages	8,388	7,262
Other	23,451	18,099
Total consumer and other	31,839	25,361
Total gross loans and leases receivable	$ 1,600,109	$ 1,503,038
Category as a % of total portfolio	100.00%	100.00%
Category I
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 177,434	$ 166,018
Commercial real estate — non-owner occupied	466,855	441,246
Land development	41,267	36,470
Construction	130,183	121,528
Multi-family	174,664	136,978
1-4 family	32,741	34,598
Total commercial real estate	1,023,144	936,838
Commercial and industrial	370,015	341,875
Direct financing leases, net	28,197	28,866
Home equity and second mortgages	8,384	7,250
Other	23,000	17,745
Total consumer and other	31,384	24,995
Total gross loans and leases receivable	$ 1,452,740	$ 1,332,574
Category as a % of total portfolio	90.79%	88.66%
Category II
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 4,925	$ 18,442
Commercial real estate — non-owner occupied	19,909	27,854
Land development	1,485	1,057
Construction	0	757
Multi-family	0	0
1-4 family	1,522	7,735
Total commercial real estate	27,841	55,845
Commercial and industrial	27,084	25,344
Direct financing leases, net	1,709	342
Home equity and second mortgages	4	8
Other	0	0
Total consumer and other	4	8
Total gross loans and leases receivable	$ 56,638	$ 81,539
Category as a % of total portfolio	3.54%	5.42%
Category III
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 10,904	$ 8,850
Commercial real estate — non-owner occupied	1,046	1,102
Land development	0	0
Construction	209	0
Multi-family	0	0
1-4 family	714	1,220
Total commercial real estate	12,873	11,172
Commercial and industrial	45,874	49,453
Direct financing leases, net	1,184	1,579
Home equity and second mortgages	0	0
Other	0	0
Total consumer and other	0	0
Total gross loans and leases receivable	$ 59,931	$ 62,204
Category as a % of total portfolio	3.75%	4.14%
Category IV
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 10,470	$ 7,077
Commercial real estate — non-owner occupied	32	34
Land development	2,257	2,627
Construction	1,879	2,872
Multi-family	0	0
1-4 family	752	1,423
Total commercial real estate	15,390	14,033
Commercial and industrial	14,959	12,330
Direct financing leases, net	0	0
Home equity and second mortgages	0	4
Other	451	354
Total consumer and other	451	358
Total gross loans and leases receivable	$ 30,800	$ 26,721
Category as a % of total portfolio	1.92%	1.78%

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