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Allowance for Loan and Lease Losses (Individually Impaired Loans) (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2016 | Dec. 31, 2015
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | $ 22,957 | $ 20,974
With an allowance recorded Recorded Investment | [2] | 20,737 | 18,792
With an allowance recorded Related Allowance |  | 3,327 | 3,915
With an allowance recorded Average Recorded Investment |  | 23,681 | 19,865
With an allowance recorded Interest Income Recognized | [3] | 710 | 831
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 4,020 | 7,261
With no Related Allowance Recorded Recorded Investment | [2] | 3,306 | 6,729
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 5,049 | 7,956
With no Related Allowance Recorded Interest Income Recognized | [3] | 14 | 152
Individually impaired loans Unpaid Principal Balance | [1] | 26,977 | 28,235
Individually impaired loans Recorded Investment | [2] | 24,043 | 25,521
Individually impaired loans Related Allowance |  | 3,327 | 3,915
Individually impaired loans Average Recorded Investment |  | 28,730 | 27,821
Individually impaired loans Interest Income Recognized | [3] | 724 | 983
Agricultural [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 0 |
With an allowance recorded Recorded Investment | [2] | 0 |
With an allowance recorded Related Allowance |  | 0 |
With an allowance recorded Average Recorded Investment |  | 0 |
With an allowance recorded Interest Income Recognized | [3] | 0 |
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 65 |
With no Related Allowance Recorded Recorded Investment | [2] | 65 |
With no Related Allowance Recorded Related Allowance |  | 0 |
With no Related Allowance Recorded Average Recorded Investment |  | 66 |
With no Related Allowance Recorded Interest Income Recognized | [3] | 0 |
Commercial And Industrial Loan [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 2,254 | 2,572
With an allowance recorded Recorded Investment | [2] | 2,254 | 2,559
With an allowance recorded Related Allowance |  | 591 | 683
With an allowance recorded Average Recorded Investment |  | 2,435 | 2,857
With an allowance recorded Interest Income Recognized | [3] | 48 | 97
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 107 | 45
With no Related Allowance Recorded Recorded Investment | [2] | 39 | 29
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 292 | 77
With no Related Allowance Recorded Interest Income Recognized | [3] | 1 | 0
Consumer Loan [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 1,931 | 2,023
With an allowance recorded Recorded Investment | [2] | 1,927 | 2,022
With an allowance recorded Related Allowance |  | 302 | 343
With an allowance recorded Average Recorded Investment |  | 2,084 | 2,298
With an allowance recorded Interest Income Recognized | [3] | 57 | 112
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 196 | 160
With no Related Allowance Recorded Recorded Investment | [2] | 35 | 15
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 304 | 256
With no Related Allowance Recorded Interest Income Recognized | [3] | 0 | 0
Real Estate Loan [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 18,772 | 16,379
With an allowance recorded Recorded Investment | [2] | 16,556 | 14,211
With an allowance recorded Related Allowance |  | 2,434 | 2,889
With an allowance recorded Average Recorded Investment |  | 19,162 | 14,710
With an allowance recorded Interest Income Recognized | [3] | 605 | 622
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 3,652 | 7,056
With no Related Allowance Recorded Recorded Investment | [2] | 3,167 | 6,685
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 4,387 | 7,623
With no Related Allowance Recorded Interest Income Recognized | [3] | 13 | 152
Real Estate Loan [Member] | Other construction/land [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 558 | 919
With an allowance recorded Recorded Investment | [2] | 521 | 769
With an allowance recorded Related Allowance |  | 42 | 83
With an allowance recorded Average Recorded Investment |  | 581 | 967
With an allowance recorded Interest Income Recognized | [3] | 15 | 42
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 567 | 554
With no Related Allowance Recorded Recorded Investment | [2] | 448 | 554
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 599 | 566
With no Related Allowance Recorded Interest Income Recognized | [3] | 12 | 34
Real Estate Loan [Member] | 1-4 Family - closed-end [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 7,989 | 8,085
With an allowance recorded Recorded Investment | [2] | 6,042 | 6,137
With an allowance recorded Related Allowance |  | 325 | 290
With an allowance recorded Average Recorded Investment |  | 8,118 | 6,157
With an allowance recorded Interest Income Recognized | [3] | 233 | 255
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 321 | 585
With no Related Allowance Recorded Recorded Investment | [2] | 70 | 362
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 667 | 602
With no Related Allowance Recorded Interest Income Recognized | [3] | 1 | 0
Real Estate Loan [Member] | Equity lines [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 3,337 | 2,339
With an allowance recorded Recorded Investment | [2] | 3,284 | 2,269
With an allowance recorded Related Allowance |  | 164 | 214
With an allowance recorded Average Recorded Investment |  | 3,426 | 2,374
With an allowance recorded Interest Income Recognized | [3] | 32 | 17
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 522 | 843
With no Related Allowance Recorded Recorded Investment | [2] | 493 | 842
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 537 | 840
With no Related Allowance Recorded Interest Income Recognized | [3] | 0 | 0
Real Estate Loan [Member] | Multi Family Residencial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 417 | 414
With an allowance recorded Recorded Investment | [2] | 417 | 414
With an allowance recorded Related Allowance |  | 7 | 1
With an allowance recorded Average Recorded Investment |  | 421 | 417
With an allowance recorded Interest Income Recognized | [3] | 27 | 5
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 0 | 630
With no Related Allowance Recorded Recorded Investment | [2] | 0 | 630
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 0 | 633
With no Related Allowance Recorded Interest Income Recognized | [3] | 0 | 0
Real Estate Loan [Member] | Commercial real estate - owner occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 1,375 | 1,272
With an allowance recorded Recorded Investment | [2] | 1,352 | 1,272
With an allowance recorded Related Allowance |  | 537 | 589
With an allowance recorded Average Recorded Investment |  | 1,431 | 1,405
With an allowance recorded Interest Income Recognized | [3] | 125 | 139
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 2,036 | 1,828
With no Related Allowance Recorded Recorded Investment | [2] | 1,950 | 1,828
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 2,340 | 2,251
With no Related Allowance Recorded Interest Income Recognized | [3] | 0 | 0
Real Estate Loan [Member] | Commercial real estate- non-owner occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 5,096 | 3,350
With an allowance recorded Recorded Investment | [2] | 4,940 | 3,350
With an allowance recorded Related Allowance |  | 1,359 | 1,712
With an allowance recorded Average Recorded Investment |  | 5,185 | 3,390
With an allowance recorded Interest Income Recognized | [3] | 173 | 164
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 163 | 2,006
With no Related Allowance Recorded Recorded Investment | [2] | 163 | 1,859
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 194 | 2,102
With no Related Allowance Recorded Interest Income Recognized | [3] | 0 | 118
Real Estate Loan [Member] | Farmland [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
With an allowance recorded Unpaid Principal Balance | [1] | 0 | 0
With an allowance recorded Recorded Investment | [2] | 0 | 0
With an allowance recorded Related Allowance |  | 0 | 0
With an allowance recorded Average Recorded Investment |  | 0 | 0
With an allowance recorded Interest Income Recognized | [3] | 0 | 0
With no Related Allowance Recorded Unpaid Principal Balance | [1] | 43 | 610
With no Related Allowance Recorded Recorded Investment | [2] | 43 | 610
With no Related Allowance Recorded Related Allowance |  | 0 | 0
With no Related Allowance Recorded Average Recorded Investment |  | 50 | 629
With no Related Allowance Recorded Interest Income Recognized | [3] | $ 0 | $ 0
[1] | Contractual principal balance due from customer.
[2] | Principal balance on Company's books, less any direct charge offs, including interest applied to principal and unaccreted discount or premium.
[3] | Interest income is recognized on performing balances on a regular accrual basis.

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