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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) $ in Thousands | Mar. 31, 2018 USD ($) loans | Dec. 31, 2017 USD ($) loans
--- | --- | ---
Troubled debt restructurings |  |
Number of Loans | loans | 24 | 27
Pre-Modification Recorded Investment | $ 18,401 | $ 18,485
Post-Modification Recorded Investment | $ 8,891 | $ 9,147
Commercial real estate — owner occupied |  |
Troubled debt restructurings |  |
Number of Loans | loans | 3 | 3
Pre-Modification Recorded Investment | $ 1,065 | $ 1,065
Post-Modification Recorded Investment | $ 868 | $ 880
Commercial real estate — non-owner occupied |  |
Troubled debt restructurings |  |
Number of Loans | loans | 1 | 1
Pre-Modification Recorded Investment | $ 158 | $ 158
Post-Modification Recorded Investment | $ 33 | $ 34
Land development |  |
Troubled debt restructurings |  |
Number of Loans | loans | 1 | 1
Pre-Modification Recorded Investment | $ 5,745 | $ 5,745
Post-Modification Recorded Investment | $ 2,516 | $ 2,626
Construction |  |
Troubled debt restructurings |  |
Number of Loans | loans | 0 | 0
Pre-Modification Recorded Investment | $ 0 | $ 0
Post-Modification Recorded Investment | $ 0 | $ 0
Multi-family |  |
Troubled debt restructurings |  |
Number of Loans | loans | 0 | 0
Pre-Modification Recorded Investment | $ 0 | $ 0
Post-Modification Recorded Investment | $ 0 | $ 0
1-4 family |  |
Troubled debt restructurings |  |
Number of Loans | loans | 7 | 8
Pre-Modification Recorded Investment | $ 560 | $ 627
Post-Modification Recorded Investment | $ 243 | $ 307
Commercial and industrial |  |
Troubled debt restructurings |  |
Number of Loans | loans | 10 | 10
Pre-Modification Recorded Investment | $ 8,759 | $ 8,759
Post-Modification Recorded Investment | $ 4,913 | $ 4,951
Home equity and second mortgages |  |
Troubled debt restructurings |  |
Number of Loans | loans | 1 | 2
Pre-Modification Recorded Investment | $ 37 | $ 37
Post-Modification Recorded Investment | $ 2 | $ 4
Other |  |
Troubled debt restructurings |  |
Number of Loans | loans | 1 | 2
Pre-Modification Recorded Investment | $ 2,077 | $ 2,094
Post-Modification Recorded Investment | $ 316 | $ 345

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