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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Non-accrual Loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | $ 15,198 | $ 9,792 |  |
Foreclosed properties, net | 1,854 | 1,693 |  | $ 333
Total non-performing assets | 17,142 | 11,795 |  |
Performing troubled debt restructurings | 1,944 | 2,003 |  |
Total impaired assets | $ 18,996 | $ 13,488 |  |
Total non-accrual loans and leases to gross loans and leases | 1.12% | 0.76% |  |
Total non-performing assets to total gross loans and leases plus foreclosed properties, net | 1.26% | 0.89% |  |
Total non-performing assets to total assets | 1.01% | 0.70% |  |
Allowance for loan and lease losses to gross loans and leases | 1.12% | 1.12% | 1.39% |
Allowance for loan and lease losses to non-accrual loans and leases | 100.01% | 146.33% |  |
Commercial real estate — owner occupied |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | $ 579 | $ 500 |  |
Commercial real estate — non-owner occupied |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 282 | 286 |  |
Construction and land development |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 4,539 | 4,932 |  |
Multi-family |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 10 | 17 |  |
1-4 family |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 1,316 | 690 |  |
Total non-accrual commercial real estate |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | $ 6,726 | 6,425 |  |
Allowance for loan and lease losses to gross loans and leases | 1.03% |  | 1.38% |
Commercial and industrial |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | $ 7,378 | 2,318 |  |
Direct financing leases, net |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 0 | 0 |  |
Home equity and second mortgages |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 403 | 329 |  |
Other |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 691 | 720 |  |
Total non-accrual consumer and other loans |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | $ 1,094 | $ 1,049 |  |
Allowance for loan and lease losses to gross loans and leases | 1.14% |  | 1.54% |

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