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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Impaired Loans and Leases) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Recorded Investment(1) |  |
With no impairment reserve recorded | $ 16,971 | $ 16,975
With impairment reserve recorded | 13,829 | 9,746
Total | 30,800 | 26,721
Unpaid Principal Balance |  |
With no impairment reserve recorded | 26,028 | 21,671
With impairment reserve recorded | 15,164 | 11,694
Total | 41,192 | 33,365
Impairment Reserve |  |
Impairment Reserve | 4,569 | 4,491
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 16,152 | 18,624
With impairment reserve recorded | 10,319 | 14,540
Total | 26,471 | 33,164
Foregone Interest Income |  |
With no impairment reserve recorded | 1,600 | 1,898
With impairment reserve recorded | 944 | 797
Foregone interest income | 2,544 | 2,695
Interest Income Recognized |  |
With no impairment reserve recorded | 760 | 454
With impairment reserve recorded | 0 | 0
Total | 760 | 454
Net Foregone Interest Income |  |
With no impairment reserve recorded | 840 | 1,444
With impairment reserve recorded | 944 | 797
Total | 1,784 | 2,241
Commercial real estate — owner occupied |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 9,326 | 7,077
With impairment reserve recorded | 1,144 | 0
Total | 10,470 | 7,077
Unpaid Principal Balance |  |
With no impairment reserve recorded | 12,451 | 7,077
With impairment reserve recorded | 1,144 | 0
Total | 13,595 | 7,077
Impairment Reserve |  |
Impairment Reserve | 193 | 0
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 7,305 | 5,549
With impairment reserve recorded | 255 | 0
Total | 7,560 | 5,549
Foregone Interest Income |  |
With no impairment reserve recorded | 614 | 613
With impairment reserve recorded | 64 | 0
Foregone interest income | 678 | 613
Interest Income Recognized |  |
With no impairment reserve recorded | 197 | 0
With impairment reserve recorded | 0 | 0
Total | 197 | 0
Net Foregone Interest Income |  |
With no impairment reserve recorded | 417 | 613
With impairment reserve recorded | 64 | 0
Total | 481 | 613
Commercial real estate — non-owner occupied |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 32 | 34
With impairment reserve recorded | 0 | 0
Total | 32 | 34
Unpaid Principal Balance |  |
With no impairment reserve recorded | 72 | 75
With impairment reserve recorded | 0 | 0
Total | 72 | 75
Impairment Reserve |  |
Impairment Reserve | 0 | 0
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 34 | 1,830
With impairment reserve recorded | 0 | 0
Total | 34 | 1,830
Foregone Interest Income |  |
With no impairment reserve recorded | 1 | 97
With impairment reserve recorded | 0 | 0
Foregone interest income | 1 | 97
Interest Income Recognized |  |
With no impairment reserve recorded | 0 | 226
With impairment reserve recorded | 0 | 0
Total | 0 | 226
Net Foregone Interest Income |  |
With no impairment reserve recorded | 1 | (129)
With impairment reserve recorded | 0 | 0
Total | 1 | (129)
Land development |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 2,136 | 2,627
With impairment reserve recorded | 121 | 0
Total | 2,257 | 2,627
Unpaid Principal Balance |  |
With no impairment reserve recorded | 6,432 | 5,297
With impairment reserve recorded | 121 | 0
Total | 6,553 | 5,297
Impairment Reserve |  |
Impairment Reserve | 35 | 0
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 2,373 | 3,092
With impairment reserve recorded | 39 | 0
Total | 2,412 | 3,092
Foregone Interest Income |  |
With no impairment reserve recorded | 33 | 84
With impairment reserve recorded | 2 | 0
Foregone interest income | 35 | 84
Interest Income Recognized |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Net Foregone Interest Income |  |
With no impairment reserve recorded | 33 | 84
With impairment reserve recorded | 2 | 0
Total | 35 | 84
Construction |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 1,879 | 2,872
Total | 1,879 | 2,872
Unpaid Principal Balance |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 2,872 | 2,872
Total | 2,872 | 2,872
Impairment Reserve |  |
Impairment Reserve | 379 | 415
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 2,039 | 2,000
With impairment reserve recorded | 207 | 2,252
Total | 2,246 | 4,252
Foregone Interest Income |  |
With no impairment reserve recorded | 0 | 134
With impairment reserve recorded | 162 | 158
Foregone interest income | 162 | 292
Interest Income Recognized |  |
With no impairment reserve recorded | 0 | 214
With impairment reserve recorded | 0 | 0
Total | 0 | 214
Net Foregone Interest Income |  |
With no impairment reserve recorded | 0 | (80)
With impairment reserve recorded | 162 | 158
Total | 162 | 78
Multi-family |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Unpaid Principal Balance |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Impairment Reserve |  |
Impairment Reserve | 0 | 0
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 0 | 1
With impairment reserve recorded | 0 | 0
Total | 0 | 1
Foregone Interest Income |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Foregone interest income | 0 | 0
Interest Income Recognized |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Net Foregone Interest Income |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
1-4 family |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 752 | 1,423
With impairment reserve recorded | 0 | 0
Total | 752 | 1,423
Unpaid Principal Balance |  |
With no impairment reserve recorded | 1,022 | 1,706
With impairment reserve recorded | 0 | 0
Total | 1,022 | 1,706
Impairment Reserve |  |
Impairment Reserve | 0 | 0
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 961 | 2,146
With impairment reserve recorded | 0 | 0
Total | 961 | 2,146
Foregone Interest Income |  |
With no impairment reserve recorded | 40 | 53
With impairment reserve recorded | 0 | 0
Foregone interest income | 40 | 53
Interest Income Recognized |  |
With no impairment reserve recorded | 76 | 7
With impairment reserve recorded | 0 | 0
Total | 76 | 7
Net Foregone Interest Income |  |
With no impairment reserve recorded | (36) | 46
With impairment reserve recorded | 0 | 0
Total | (36) | 46
Commercial and industrial |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 4,434 | 5,465
With impairment reserve recorded | 10,525 | 6,865
Total | 14,959 | 12,330
Unpaid Principal Balance |  |
With no impairment reserve recorded | 5,094 | 6,502
With impairment reserve recorded | 10,867 | 8,813
Total | 15,961 | 15,315
Impairment Reserve |  |
Impairment Reserve | 3,802 | 4,067
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 3,133 | 3,634
With impairment reserve recorded | 9,810 | 12,288
Total | 12,943 | 15,922
Foregone Interest Income |  |
With no impairment reserve recorded | 870 | 858
With impairment reserve recorded | 716 | 639
Foregone interest income | 1,586 | 1,497
Interest Income Recognized |  |
With no impairment reserve recorded | 442 | 7
With impairment reserve recorded | 0 | 0
Total | 442 | 7
Net Foregone Interest Income |  |
With no impairment reserve recorded | 428 | 851
With impairment reserve recorded | 716 | 639
Total | 1,144 | 1,490
Direct financing leases, net |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Unpaid Principal Balance |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Impairment Reserve |  |
Impairment Reserve | 0 | 0
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Foregone Interest Income |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Foregone interest income | 0 | 0
Interest Income Recognized |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Net Foregone Interest Income |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Home equity and second mortgages |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 0 | 4
With impairment reserve recorded | 0 | 0
Total | 0 | 4
Unpaid Principal Balance |  |
With no impairment reserve recorded | 0 | 3
With impairment reserve recorded | 0 | 0
Total | 0 | 3
Impairment Reserve |  |
Impairment Reserve | 0 | 0
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 1 | 7
With impairment reserve recorded | 0 | 0
Total | 1 | 7
Foregone Interest Income |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Foregone interest income | 0 | 0
Interest Income Recognized |  |
With no impairment reserve recorded | 45 | 0
With impairment reserve recorded | 0 | 0
Total | 45 | 0
Net Foregone Interest Income |  |
With no impairment reserve recorded | (45) | 0
With impairment reserve recorded | 0 | 0
Total | (45) | 0
Other |  |
Recorded Investment(1) |  |
With no impairment reserve recorded | 291 | 345
With impairment reserve recorded | 160 | 9
Total | 451 | 354
Unpaid Principal Balance |  |
With no impairment reserve recorded | 957 | 1,011
With impairment reserve recorded | 160 | 9
Total | 1,117 | 1,020
Impairment Reserve |  |
Impairment Reserve | 160 | 9
Average Recorded Investment(2) |  |
With no impairment reserve recorded | 306 | 365
With impairment reserve recorded | 8 | 0
Total | 314 | 365
Foregone Interest Income |  |
With no impairment reserve recorded | 42 | 59
With impairment reserve recorded | 0 | 0
Foregone interest income | 42 | 59
Interest Income Recognized |  |
With no impairment reserve recorded | 0 | 0
With impairment reserve recorded | 0 | 0
Total | 0 | 0
Net Foregone Interest Income |  |
With no impairment reserve recorded | 42 | 59
With impairment reserve recorded | 0 | 0
Total | $ 42 | $ 59

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