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Condensed Parent Company Financial Statements - Summary of Balance Sheet of Parent Company (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
ASSETS |  |  |
Cash | $ 228,431 | $ 216,104 |
Goodwill | 79,749 | 54,042 |
Total assets | 7,574,258 | 7,253,156 | $ 7,018,952
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |
Other liabilities | 37,495 | 29,623 |
Junior subordinated debentures | 26,804 | 31,959 |
Stockholders’ equity | 902,789 | 775,629 | $ 711,094
Total liabilities and stockholders' equity | 7,574,258 | 7,253,156 |
Parent Company [Member] |  |  |
ASSETS |  |  |
Cash | 105,089 | 67,917 |
Investments in subsidiaries | 822,336 | 737,031 |
Goodwill | 624 | 624 |
Dividends receivable | 11,058 | 7,788 |
Other assets | 958 | 1,401 |
Total assets | 940,065 | 814,761 |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |
Other liabilities | 10,472 | 7,173 |
Junior subordinated debentures | 26,804 | 31,959 |
Stockholders’ equity | 902,789 | 775,629 |
Total liabilities and stockholders' equity | $ 940,065 | $ 814,761 |

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