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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, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Dec. 31, 2012
--- | --- | --- | --- | ---
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | $ 15,837 | $ 15,855 |  |
Foreclosed properties, net | 106 | 333 |  | 1,574
Total non-performing assets | 15,943 | 16,188 |  |
Performing troubled debt restructurings | 556 | 371 |  |
Total impaired assets | 16,499 | 16,559 |  |
Total non-accrual loans and leases to gross loans and leases | 1.52% | 1.61% |  |
Total non-performing assets to total gross loans and leases plus foreclosed properties, net | 1.53% | 1.65% |  |
Total non-performing assets to total assets | 1.12% | 1.28% |  |
Allowance for loan and lease losses to gross loans and leases | 1.34% | 1.42% | 1.59% |
Allowance for loan and lease losses to non-accrual loans and leases | 87.96% | 87.68% |  |
Commercial real estate — owner occupied |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 507 | 339 |  |
Commercial real estate — non-owner occupied |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 274 | 283 |  |
Construction and land development |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 5,026 | 5,422 |  |
Multi-family |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 20 | 31 |  |
1-4 family |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 366 | 521 |  |
Total non-accrual commercial real estate |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 6,193 | 6,596 |  |
Allowance for loan and lease losses to gross loans and leases | 1.33% |  | 1.61% |
Commercial and industrial |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 8,749 | 8,011 |  |
Allowance for loan and lease losses to gross loans and leases | 1.36% |  | 1.54% |
Direct financing leases, net |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 0 | 0 |  |
Allowance for loan and lease losses to gross loans and leases | 1.22% |  | 1.26% |
Home equity and second mortgages |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 132 | 453 |  |
Other |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | 763 | 795 |  |
Total non-accrual consumer and other loans |  |  |  |
Financing Receivable, Impaired |  |  |  |
Non-accrual loans and leases | $ 895 | $ 1,248 |  |
Allowance for loan and lease losses to gross loans and leases | 1.49% |  | 2.03% |

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