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Allowance for Loan and Lease Losses - Troubled Debt Restructuring Modifications (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 USD ($) contract | Sep. 30, 2017 USD ($) property contract loan | Sep. 30, 2016 USD ($) contract | Dec. 31, 2016 USD ($) property loan
Troubled debt restructuring modifications |  |  |  |
Number of Contracts | contract | 9 | 3 | 22 |
Recorded Investment | $ 5,719 | $ 1,781 | $ 30,174 |
Related Allowance | $ 18 | 21 | $ 64 |
Total loan and lease commitments |  | 5,438,176 |  | $ 5,121,811
Commitments related to borrowers who had loan terms modified in a TDR |  | $ 1,000 |  | 6,900
Loans modified in TDRs that experienced a payment default |  |  |  |
Period past due for payment default |  | 30 days |  |
Number of contracts | contract |  | 3 |  |
Recorded Investment |  | $ 4,399 |  |
Commercial and Industrial |  |  |  |
Troubled debt restructuring modifications |  |  |  |
Number of Contracts | contract | 2 | 1 | 6 |
Recorded Investment | $ 98 | $ 1,120 | $ 16,015 |
Related Allowance | $ 4 |  | $ 4 |
Total loan and lease commitments |  | $ 2,406,088 |  | 2,185,810
Loans modified in TDRs that experienced a payment default |  |  |  |
Number of contracts | contract |  | 1 |  |
Recorded Investment |  | $ 2,496 |  |
Commercial Real Estate |  |  |  |
Troubled debt restructuring modifications |  |  |  |
Number of Contracts | contract | 4 |  | 6 |
Recorded Investment | $ 5,044 |  | $ 10,450 |
Related Allowance | $ 7 |  | $ 7 |
Loans modified in TDRs that experienced a payment default |  |  |  |
Number of contracts | contract |  | 1 |  |
Recorded Investment |  | $ 1,393 |  |
Lease Financing |  |  |  |
Troubled debt restructuring modifications |  |  |  |
Total loan and lease commitments |  |  |  | $ 16
Residential |  |  |  |
Troubled debt restructuring modifications |  |  |  |
Period of time monthly payments are lowered to accommodate borrowers' financial needs |  | 2 years |  |
Number of Contracts | contract | 3 | 2 | 10 |
Recorded Investment | $ 577 | $ 661 | $ 3,709 |
Related Allowance | $ 7 | $ 21 | $ 53 |
Loans modified in TDRs that experienced a payment default |  |  |  |
Number of contracts | contract |  | 1 |  |
Recorded Investment |  | $ 510 |  |
Number of residential mortgage loans collateralized by real estate property and modified in a TDR in the process of foreclosure | loan |  | 0 |  | 1
Residential mortgage loans collateralized by real estate property and modified in a TDR in the process of foreclosure |  |  |  | $ 500
Residential | Real estate property held from foreclosed TDR |  |  |  |
Loans modified in TDRs that experienced a payment default |  |  |  |
Number of real estate properties | property |  | 1 |  | 1
Real estate property held from a foreclosed TDR |  | $ 300 |  | $ 300
Consumer |  |  |  |
Troubled debt restructuring modifications |  |  |  |
Total loan and lease commitments |  | $ 1,494,407 |  | $ 1,459,467
Consumer | Minimum |  |  |  |
Troubled debt restructuring modifications |  |  |  |
Threshold period past due for charge-off |  | 120 days |  |
Consumer | Maximum |  |  |  |
Troubled debt restructuring modifications |  |  |  |
Threshold period past due for charge-off |  | 180 days |  |

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