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SEGMENT INFORMATION - Reconciliation of Reportable Segment Financial Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Net Income (Loss): |  |  |  |
Income before income taxes | $ 59,298 | $ 41,191 | $ 120,230 | $ 82,097
Income tax expense | 18,011 | 10,159 | 35,629 | 17,917
Net income | 41,287 | 31,032 | 84,601 | 64,180
Segment Reconciling Items [Member] |  |  |  |
Net Income (Loss): |  |  |  |
Total income for segments and other | 88,019 | 66,897 | 175,224 | 135,969
Other operating expenses | (28,721) | (25,706) | (54,994) | (53,872)
Income before income taxes | 59,298 | 41,191 | 120,230 | 82,097
Income tax expense | 18,011 | 10,159 | 35,629 | 17,917
Net income | 41,287 | 31,032 | 84,601 | 64,180
Average assets: |  |  |  |
Total average earning assets for segments | 11,479,210 | 11,381,707 | 11,389,075 | 11,307,332
Average non-earning assets | 969,286 | 963,752 | 977,577 | 943,828
Total consolidated average assets | $ 12,448,496 | $ 12,345,459 | $ 12,366,652 | $ 12,251,160

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