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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	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 196,032	$ 200,387
Commercial real estate — non-owner occupied	485,962	470,236
Land development	45,033	40,154
Construction	188,036	125,157
Multi-family	137,388	136,978
1-4 family	35,569	44,976
Total commercial real estate	1,088,020	1,017,888
Commercial and industrial	447,540	429,002
Direct financing leases, net	32,001	30,787
Home equity and second mortgages	7,962	7,262
Other	21,075	18,099
Total consumer and other	29,037	25,361
Total gross loans and leases receivable	$ 1,596,598	$ 1,503,038
Category as a % of total portfolio	100.00%	100.00%
Category I
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 160,650	$ 166,018
Commercial real estate — non-owner occupied	464,794	441,246
Land development	41,690	36,470
Construction	185,439	121,528
Multi-family	137,388	136,978
1-4 family	32,554	34,598
Total commercial real estate	1,022,515	936,838
Commercial and industrial	360,855	341,875
Direct financing leases, net	30,459	28,866
Home equity and second mortgages	7,956	7,250
Other	20,722	17,745
Total consumer and other	28,678	24,995
Total gross loans and leases receivable	$ 1,442,507	$ 1,332,574
Category as a % of total portfolio	90.36%	88.66%
Category II
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 11,995	$ 18,442
Commercial real estate — non-owner occupied	20,072	27,854
Land development	1,032	1,057
Construction	501	757
Multi-family	0	0
1-4 family	1,533	7,735
Total commercial real estate	35,133	55,845
Commercial and industrial	19,636	25,344
Direct financing leases, net	225	342
Home equity and second mortgages	5	8
Other	0	0
Total consumer and other	5	8
Total gross loans and leases receivable	$ 54,999	$ 81,539
Category as a % of total portfolio	3.44%	5.42%
Category III
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 13,341	$ 8,850
Commercial real estate — non-owner occupied	1,065	1,102
Land development	0	0
Construction	217	0
Multi-family	0	0
1-4 family	721	1,220
Total commercial real estate	15,344	11,172
Commercial and industrial	51,091	49,453
Direct financing leases, net	1,317	1,579
Home equity and second mortgages	0	0
Other	0	0
Total consumer and other	0	0
Total gross loans and leases receivable	$ 67,752	$ 62,204
Category as a % of total portfolio	4.24%	4.14%
Category IV
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 10,046	$ 7,077
Commercial real estate — non-owner occupied	31	34
Land development	2,311	2,627
Construction	1,879	2,872
Multi-family	0	0
1-4 family	761	1,423
Total commercial real estate	15,028	14,033
Commercial and industrial	15,958	12,330
Direct financing leases, net	0	0
Home equity and second mortgages	1	4
Other	353	354
Total consumer and other	354	358
Total gross loans and leases receivable	$ 31,340	$ 26,721
Category as a % of total portfolio	1.96%	1.78%

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