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Loans and Allowance for Credit Losses (Details 5) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016
--- | --- | --- | ---
Loans past due | $ 30,249 | $ 31,082 | $ 28,650
Current loans | 6,053,955 | 5,646,811 | 5,453,325
Total recorded investment in loans | 6,084,204 | 5,677,893 | 5,481,975
Real Estate Mortgage - Residential Portfolio Segment [Member] |  |  |
Loans past due | 3,904 | 1,733 | 726
Current loans | 105,556 | 151,015 | 153,713
Total recorded investment in loans | 109,460 | 152,748 | 154,439
Commercial Real Estate - Owner Occupied Portfolio Segment [Member] |  |  |
Loans past due | 10,655 | 9,408 | 5,441
Current loans | 738,925 | 631,462 | 584,986
Total recorded investment in loans | 749,580 | 640,870 | 590,427
Other Consumer Portfolio Segment [Member] |  |  |
Loans past due | 117 | 236 | 24
Current loans | 8,696 | 10,129 | 6,188
Total recorded investment in loans | 8,813 | 10,365 | 6,212
Commercial Real Estate - Income Producing Portfolio Segment [Member] |  |  |
Loans past due | 4,810 | 11,050 | 10,098
Current loans | 2,894,138 | 2,498,467 | 2,541,088
Total recorded investment in loans | 2,898,948 | 2,509,517 | 2,551,186
Home Equity Portfolio Segment [Member] |  |  |
Loans past due | 1,331 |  | 1,295
Current loans | 100,567 | 105,096 | 105,561
Total recorded investment in loans | 101,898 | 105,096 | 106,856
Construction Portfolio Segment [Member] |  |  |
Loans past due | 5,127 | 3,774 | 6,412
Current loans | 966,194 | 1,054,795 | 936,401
Total recorded investment in loans | 971,321 | 1,058,569 | 942,813
Commercial Portfolio Segment [Member] |  |  |
Loans past due | 4,305 | 4,881 | 4,654
Current loans | 1,239,879 | 1,195,847 | 1,125,388
Total recorded investment in loans | 1,244,184 | 1,200,728 | 1,130,042
Financing Receivables, 30 to 59 Days Past Due [Member] |  |  |
Loans past due | 6,713 | 7,608 | 1,743
Financing Receivables, 30 to 59 Days Past Due [Member] | Real Estate Mortgage - Residential Portfolio Segment [Member] |  |  |
Loans past due | 1,480 | 1,015 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate - Owner Occupied Portfolio Segment [Member] |  |  |
Loans past due | 817 | 3,987 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Other Consumer Portfolio Segment [Member] |  |  |
Loans past due | 21 | 101 | 8
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate - Income Producing Portfolio Segment [Member] |  |  |
Loans past due | 3,160 | 511 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Home Equity Portfolio Segment [Member] |  |  |
Loans past due | 637 |  | 562
Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Portfolio Segment [Member] |  |  |
Loans past due | 197 | 360 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans past due | 401 | 1,634 | 1,173
Financing Receivables, 60 to 89 Days Past Due [Member] |  |  |
Loans past due | 6,927 | 5,599 | 4,633
Financing Receivables, 60 to 89 Days Past Due [Member] | Real Estate Mortgage - Residential Portfolio Segment [Member] |  |  |
Loans past due | 2,123 | 163 | 164
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate - Owner Occupied Portfolio Segment [Member] |  |  |
Loans past due | 3,268 | 3,328 | 3,338
Financing Receivables, 60 to 89 Days Past Due [Member] | Other Consumer Portfolio Segment [Member] |  |  |
Loans past due | 4 | 9 | 16
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate - Income Producing Portfolio Segment [Member] |  |  |
Loans past due | 770 |  |
Financing Receivables, 60 to 89 Days Past Due [Member] | Home Equity Portfolio Segment [Member] |  |  |
Loans past due | 100 |  | 620
Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Portfolio Segment [Member] |  |  |
Loans past due |  | 1,342 |
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans past due | 662 | 757 | 495
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Loans past due | 16,609 | 17,875 | 22,274
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Real Estate Mortgage - Residential Portfolio Segment [Member] |  |  |
Loans past due | 301 | 555 | 562
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate - Owner Occupied Portfolio Segment [Member] |  |  |
Loans past due | 6,570 | 2,093 | 2,103
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Other Consumer Portfolio Segment [Member] |  |  |
Loans past due | 92 | 126 |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate - Income Producing Portfolio Segment [Member] |  |  |
Loans past due | 880 | 10,539 | 10,098
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Home Equity Portfolio Segment [Member] |  |  |
Loans past due | 594 |  | 113
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction Portfolio Segment [Member] |  |  |
Loans past due | 4,930 | 2,072 | 6,412
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans past due | $ 3,242 | $ 2,490 | $ 2,986

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