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Loans - Impaired Loans by Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | $ 32,748 | $ 38,255 | $ 32,748 | $ 38,255 | $ 35,862
Unpaid Principal Balance | 35,248 | 40,533 | 35,248 | 40,533 | 39,026
Related Allowance | 1,307 | 3,146 | 1,307 | 3,146 | 1,803
Average Recorded Investment | 34,025 | 38,653 | 34,573 | 40,126 | 38,404
Recognized Interest Income | 335 | 367 | 637 | 704 | 1,465
With No Related Allowance |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 22,010 | 25,472 | 22,010 | 25,472 | 26,313
Unpaid Principal Balance | 24,106 | 27,343 | 24,106 | 27,343 | 29,077
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 22,998 | 26,036 | 24,401 | 27,912 | 26,926
Recognized Interest Income | 218 | 239 | 415 | 454 | 1,078
With an Allowance Recorded |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 10,738 | 12,783 | 10,738 | 12,783 | 9,549
Unpaid Principal Balance | 11,142 | 13,190 | 11,142 | 13,190 | 9,949
Related Allowance | 1,307 | 3,146 | 1,307 | 3,146 | 1,803
Average Recorded Investment | 11,027 | 12,617 | 10,172 | 12,214 | 11,478
Recognized Interest Income | 117 | 128 | 222 | 250 | 387
Commercial real estate |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 12,566 | 14,803 | 12,566 | 14,803 | 13,304
Unpaid Principal Balance | 13,107 | 15,498 | 13,107 | 15,498 | 14,212
Related Allowance | 225 | 1,150 | 225 | 1,150 | 346
Average Recorded Investment | 12,638 | 12,846 | 12,766 | 14,057 | 14,120
Recognized Interest Income | 132 | 154 | 253 | 282 | 550
Commercial real estate | With No Related Allowance |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 8,986 | 10,688 | 8,986 | 10,688 | 11,687
Unpaid Principal Balance | 9,436 | 11,228 | 9,436 | 11,228 | 12,423
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 9,020 | 9,181 | 9,959 | 10,458 | 11,080
Recognized Interest Income | 93 | 112 | 182 | 201 | 488
Commercial real estate | With an Allowance Recorded |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 3,580 | 4,115 | 3,580 | 4,115 | 1,617
Unpaid Principal Balance | 3,671 | 4,270 | 3,671 | 4,270 | 1,789
Related Allowance | 225 | 1,150 | 225 | 1,150 | 346
Average Recorded Investment | 3,618 | 3,665 | 2,807 | 3,599 | 3,040
Recognized Interest Income | 39 | 42 | 71 | 81 | 62
Commercial construction |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 989 | 1,492 | 989 | 1,492 | 1,380
Unpaid Principal Balance | 989 | 1,492 | 989 | 1,492 | 1,380
Related Allowance | 275 | 487 | 275 | 487 | 413
Average Recorded Investment | 1,249 | 1,047 | 1,311 | 1,200 | 1,309
Recognized Interest Income | 13 | 14 | 25 | 28 | 56
Commercial construction | With No Related Allowance |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0 | 0 | 0
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 0 | 52 | 0 | 60 | 30
Recognized Interest Income | 0 | 0 | 0 | 0 | 0
Commercial construction | With an Allowance Recorded |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 989 | 1,492 | 989 | 1,492 | 1,380
Unpaid Principal Balance | 989 | 1,492 | 989 | 1,492 | 1,380
Related Allowance | 275 | 487 | 275 | 487 | 413
Average Recorded Investment | 1,249 | 995 | 1,311 | 1,140 | 1,279
Recognized Interest Income | 13 | 14 | 25 | 28 | 56
Commercial other |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 2,106 | 4,325 | 2,106 | 4,325 | 2,942
Unpaid Principal Balance | 2,186 | 4,663 | 2,186 | 4,663 | 3,745
Related Allowance | 275 | 830 | 275 | 830 | 129
Average Recorded Investment | 2,540 | 6,117 | 2,666 | 6,160 | 4,956
Recognized Interest Income | 30 | 40 | 46 | 68 | 169
Commercial other | With No Related Allowance |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 1,789 | 3,271 | 1,789 | 3,271 | 2,616
Unpaid Principal Balance | 1,855 | 3,549 | 1,855 | 3,549 | 3,407
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 2,069 | 4,443 | 2,267 | 4,796 | 3,853
Recognized Interest Income | 27 | 32 | 42 | 56 | 156
Commercial other | With an Allowance Recorded |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 317 | 1,054 | 317 | 1,054 | 326
Unpaid Principal Balance | 331 | 1,114 | 331 | 1,114 | 338
Related Allowance | 275 | 830 | 275 | 830 | 129
Average Recorded Investment | 471 | 1,674 | 399 | 1,364 | 1,103
Recognized Interest Income | 3 | 8 | 4 | 12 | 13
Residential term |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 15,420 | 16,102 | 15,420 | 16,102 | 16,123
Unpaid Principal Balance | 16,619 | 17,100 | 16,619 | 17,100 | 17,337
Related Allowance | 501 | 606 | 501 | 606 | 519
Average Recorded Investment | 15,921 | 16,247 | 16,145 | 16,695 | 16,243
Recognized Interest Income | 150 | 151 | 293 | 311 | 641
Residential term | With No Related Allowance |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 9,636 | 10,271 | 9,636 | 10,271 | 10,820
Unpaid Principal Balance | 10,537 | 11,082 | 10,537 | 11,082 | 11,824
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 10,458 | 10,364 | 10,797 | 10,845 | 10,505
Recognized Interest Income | 90 | 88 | 173 | 183 | 402
Residential term | With an Allowance Recorded |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 5,784 | 5,831 | 5,784 | 5,831 | 5,303
Unpaid Principal Balance | 6,082 | 6,018 | 6,082 | 6,018 | 5,513
Related Allowance | 501 | 606 | 501 | 606 | 519
Average Recorded Investment | 5,463 | 5,883 | 5,348 | 5,850 | 5,738
Recognized Interest Income | 60 | 63 | 120 | 128 | 239
Residential construction |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0 | 0 | 0
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 0 | 0 | 0 | 0 | 0
Recognized Interest Income | 0 | 0 | 0 | 0 | 0
Residential construction | With No Related Allowance |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0 | 0 | 0
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 0 | 0 | 0 | 0 | 0
Recognized Interest Income | 0 | 0 | 0 | 0 | 0
Residential construction | With an Allowance Recorded |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0 | 0 | 0
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 0 | 0 | 0 | 0 | 0
Recognized Interest Income | 0 | 0 | 0 | 0 | 0
Home equity line of credit |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 1,572 | 1,533 | 1,572 | 1,533 | 2,087
Unpaid Principal Balance | 2,209 | 1,780 | 2,209 | 1,780 | 2,324
Related Allowance | 31 | 73 | 31 | 73 | 396
Average Recorded Investment | 1,597 | 2,396 | 1,633 | 2,014 | 1,765
Recognized Interest Income | 8 | 8 | 17 | 15 | 46
Home equity line of credit | With No Related Allowance |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 1,504 | 1,242 | 1,504 | 1,242 | 1,164
Unpaid Principal Balance | 2,140 | 1,484 | 2,140 | 1,484 | 1,395
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 1,371 | 1,996 | 1,326 | 1,753 | 1,447
Recognized Interest Income | 8 | 7 | 15 | 14 | 29
Home equity line of credit | With an Allowance Recorded |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 68 | 291 | 68 | 291 | 923
Unpaid Principal Balance | 69 | 296 | 69 | 296 | 929
Related Allowance | 31 | 73 | 31 | 73 | 396
Average Recorded Investment | 226 | 400 | 307 | 261 | 318
Recognized Interest Income | 0 | 1 | 2 | 1 | 17
Consumer |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 95 | 0 | 95 | 0 | 26
Unpaid Principal Balance | 138 | 0 | 138 | 0 | 28
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 80 | 0 | 52 | 0 | 11
Recognized Interest Income | 2 | 0 | 3 | 0 | 3
Consumer | With No Related Allowance |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 95 | 0 | 95 | 0 | 26
Unpaid Principal Balance | 138 | 0 | 138 | 0 | 28
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 80 | 0 | 52 | 0 | 11
Recognized Interest Income | 0 | 0 | 3 | 0 | 3
Consumer | With an Allowance Recorded |  |  |  |  |
Schedule of Financing Receivables [Line Items] |  |  |  |  |
Recorded Investment | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0 | 0 | 0
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment | 0 | 0 | 0 | 0 | 0
Recognized Interest Income | $ 2 | $ 0 | $ 0 | $ 0 | $ 0

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