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Parent Company Only Financial Information - Balance Sheets (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Cash and cash equivalents | $ 529,288 | $ 239,973 |  |
Equity securities | 5,952 | 6,169 |  |
Investments in subsidiaries: |  |  |  |
Premises and equipment, net | 151,267 | 117,672 |  |
Other assets | 102,551 | 59,474 |  |
Total assets | 9,695,729 | 7,702,357 |  |
Liabilities: |  |  |  |
Short-term borrowings | 8,551 |  |  |
Long-term debt | 83,600 | 50,000 |  |
Senior notes, net of unamortized issuance costs | 39,674 | 39,539 |  |
Subordinated notes, net of unamortized issuance costs | 59,248 | 59,147 |  |
Junior subordinated debentures owed to unconsolidated trusts | 71,308 | 71,155 |  |
Other liabilities | 95,475 | 52,435 |  |
Total liabilities | 8,475,295 | 6,707,393 |  |
Total stockholders' equity | 1,220,434 | 994,964 | $ 935,003 | $ 594,314
Total liabilities and stockholders' equity | 9,695,729 | 7,702,357 |  |
Parent |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 14,952 | 72,007 |  |
Equity securities | 5,923 | 6,162 |  |
Investments in subsidiaries: |  |  |  |
Bank | 1,417,941 | 1,088,710 |  |
Non-bank | 806 |  |  |
Premises and equipment, net | 68 | 67 |  |
Other assets | 13,873 | 6,782 |  |
Total assets | 1,453,563 | 1,173,728 |  |
Liabilities: |  |  |  |
Short-term borrowings | 6,000 |  |  |
Long-term debt | 48,000 |  |  |
Senior notes, net of unamortized issuance costs | 39,674 | 39,539 |  |
Subordinated notes, net of unamortized issuance costs | 59,248 | 59,147 |  |
Junior subordinated debentures owed to unconsolidated trusts | 71,308 | 71,155 |  |
Other liabilities | 8,899 | 8,923 |  |
Total liabilities | 233,129 | 178,764 |  |
Total stockholders' equity | 1,220,434 | 994,964 |  |
Total liabilities and stockholders' equity | $ 1,453,563 | $ 1,173,728 |  |

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