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Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2015 | Dec. 31, 2014
Summary of the impaired loans by portfolio class of loans |  |  |
Loans with a specific valuation allowance, Recorded balance | $ 34,014 | $ 34,014 | $ 45,688
Loans with a specific valuation allowance, Unpaid principal balance | 35,374 | 35,374 | 48,477
Specific valuation allowance | 7,254 | 7,254 | 11,597
Loans with a specific valuation allowance, Average balance | 34,166 | 38,006 | 53,339
Loans without a specific valuation allowance, Recorded balance | 117,718 | 117,718 | 115,678
Loans without a specific valuation allowance, Unpaid principal balance | 146,826 | 146,826 | 145,038
Loans without a specific valuation allowance, Average balance | 122,973 | 120,541 | 128,645
Recorded balance | 151,732 | 151,732 | 161,366
Unpaid principal balance | 182,200 | 182,200 | 193,515
Average balance | 157,139 | 158,547 | 181,984
Residential Real Estate |  |  |
Summary of the impaired loans by portfolio class of loans |  |  |
Loans with a specific valuation allowance, Recorded balance | 5,055 | 5,055 | 4,110
Loans with a specific valuation allowance, Unpaid principal balance | 5,186 | 5,186 | 4,276
Specific valuation allowance | 793 | 793 | 853
Loans with a specific valuation allowance, Average balance | 5,081 | 4,757 | 5,480
Loans without a specific valuation allowance, Recorded balance | 13,144 | 13,144 | 15,466
Loans without a specific valuation allowance, Unpaid principal balance | 14,440 | 14,440 | 16,683
Loans without a specific valuation allowance, Average balance | 13,525 | 14,172 | 15,580
Recorded balance | 18,199 | 18,199 | 19,576
Unpaid principal balance | 19,626 | 19,626 | 20,959
Average balance | 18,606 | 18,929 | 21,060
Commercial Real Estate |  |  |
Summary of the impaired loans by portfolio class of loans |  |  |
Loans with a specific valuation allowance, Recorded balance | 15,111 | 15,111 | 27,155
Loans with a specific valuation allowance, Unpaid principal balance | 15,505 | 15,505 | 28,048
Specific valuation allowance | 2,546 | 2,546 | 2,967
Loans with a specific valuation allowance, Average balance | 14,034 | 18,408 | 24,519
Loans without a specific valuation allowance, Recorded balance | 79,749 | 79,749 | 78,109
Loans without a specific valuation allowance, Unpaid principal balance | 101,325 | 101,325 | 100,266
Loans without a specific valuation allowance, Average balance | 82,629 | 81,122 | 89,015
Recorded balance | 94,860 | 94,860 | 105,264
Unpaid principal balance | 116,830 | 116,830 | 128,314
Average balance | 96,663 | 99,530 | 113,534
Other Commercial |  |  |
Summary of the impaired loans by portfolio class of loans |  |  |
Loans with a specific valuation allowance, Recorded balance | 11,862 | 11,862 | 11,377
Loans with a specific valuation allowance, Unpaid principal balance | 12,184 | 12,184 | 12,461
Specific valuation allowance | 3,306 | 3,306 | 6,836
Loans with a specific valuation allowance, Average balance | 13,003 | 12,461 | 19,874
Loans without a specific valuation allowance, Recorded balance | 16,199 | 16,199 | 13,944
Loans without a specific valuation allowance, Unpaid principal balance | 21,622 | 21,622 | 19,117
Loans without a specific valuation allowance, Average balance | 18,345 | 16,878 | 14,024
Recorded balance | 28,061 | 28,061 | 25,321
Unpaid principal balance | 33,806 | 33,806 | 31,578
Average balance | 31,348 | 29,339 | 33,898
Home Equity |  |  |
Summary of the impaired loans by portfolio class of loans |  |  |
Loans with a specific valuation allowance, Recorded balance | 234 | 234 | 1,214
Loans with a specific valuation allowance, Unpaid principal balance | 253 | 253 | 1,336
Specific valuation allowance | 111 | 111 | 447
Loans with a specific valuation allowance, Average balance | 319 | 617 | 1,039
Loans without a specific valuation allowance, Recorded balance | 6,346 | 6,346 | 5,687
Loans without a specific valuation allowance, Unpaid principal balance | 7,100 | 7,100 | 6,403
Loans without a specific valuation allowance, Average balance | 6,220 | 6,042 | 7,163
Recorded balance | 6,580 | 6,580 | 6,901
Unpaid principal balance | 7,353 | 7,353 | 7,739
Average balance | 6,539 | 6,659 | 8,202
Other Consumer |  |  |
Summary of the impaired loans by portfolio class of loans |  |  |
Loans with a specific valuation allowance, Recorded balance | 1,752 | 1,752 | 1,832
Loans with a specific valuation allowance, Unpaid principal balance | 2,246 | 2,246 | 2,356
Specific valuation allowance | 498 | 498 | 494
Loans with a specific valuation allowance, Average balance | 1,729 | 1,763 | 2,427
Loans without a specific valuation allowance, Recorded balance | 2,280 | 2,280 | 2,472
Loans without a specific valuation allowance, Unpaid principal balance | 2,339 | 2,339 | 2,569
Loans without a specific valuation allowance, Average balance | 2,254 | 2,327 | 2,863
Recorded balance | 4,032 | 4,032 | 4,304
Unpaid principal balance | 4,585 | 4,585 | 4,925
Average balance | $ 3,983 | $ 4,090 | $ 5,290

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