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Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Jan. 01, 2019
Cash Transactions: |  |  |  |  |
Interest paid |  |  | $ 141,208 | $ 82,321 |
Income taxes paid, net |  |  | 41,928 | 28,105 |
Noncash Transactions: |  |  |  |  |
Loans charged-off to the allowance for loan losses | $ 8,480 | $ 6,698 | 14,548 | 15,367 |
Loans foreclosed upon and transferred to other real estate owned |  |  | 11,760 | 1,505 |
Loans foreclosed upon and transferred to other assets |  |  | 93 | 950 |
Fixed assets transferred to other real estate owned |  |  | 5,126 | 0 |
Right of use assets recognized during the period |  |  | $ 82,856 | $ 0 |
Accounting Standards Update 2016-02 |  |  |  |  |
Noncash Transactions: |  |  |  |  |
Recognized upon initial adoption of ASU |  |  |  |  | $ 79,900

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