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Shareholders' Equity and Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2021
Stockholders' Equity Note [Abstract] |
Schedule of Change in Preferred and Common Shares Issued and Common Shares Held as Treasury Shares | The following table shows the changes in shares of preferred and common stock issued and common stock held as treasury shares for the years ended December 31, 2021, 2020, and 2019.
(shares in thousands) | Series D Preferred Stock Issued |  | Series E Preferred Stock Issued |  | Total Preferred Stock Issued |  | Common Stock Issued |  | Treasury Stock Held |  | Common Stock Outstanding
Balance at December 31, 2018 | 8,000 |  |  | — |  |  | 8,000 |  |  | 143,300 |  |  | 27,434 |  |  | 115,866 |
FCB acquisition: |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock for acquisition | — |  |  | — |  |  | — |  |  | 22,043 |  |  | — |  |  | 22,043 |
Common stock reissued | — |  |  | — |  |  | — |  |  | — |  |  | (27,434) |  |  | 27,434 |
Warrants exercised and common stock reissued | — |  |  | — |  |  | — |  |  | — |  |  | (260) |  |  | 260 |
Issuance of preferred stock | — |  |  | 14,000 |  |  | 14,000 |  |  | — |  |  | — |  |  | — |
Issuance of common stock for earnout payment | — |  |  | — |  |  | — |  |  | 344 |  |  | — |  |  | 344 |
Restricted share unit activity | — |  |  | — |  |  | — |  |  | 302 |  |  | — |  |  | 302 |
Stock options exercised | — |  |  | — |  |  | — |  |  | 812 |  |  | — |  |  | 812 |
Repurchase of common stock | — |  |  | — |  |  | — |  |  | — |  |  | 19,903 |  |  | (19,903) |
Balance at December 31, 2019 | 8,000 |  |  | 14,000 |  |  | 22,000 |  |  | 166,801 |  |  | 19,643 |  |  | 147,158 |
Issuance of common stock for earnout payment | — |  |  | — |  |  | — |  |  | 379 |  |  | — |  |  | 379 |
Restricted share unit activity | — |  |  | — |  |  | — |  |  | 389 |  |  | — |  |  | 389 |
Stock options exercised | — |  |  | — |  |  | — |  |  | 564 |  |  | — |  |  | 564 |
Repurchase of common stock | — |  |  | — |  |  | — |  |  | — |  |  | 450 |  |  | (450) |
Balance at December 31, 2020 | 8,000 |  |  | 14,000 |  |  | 22,000 |  |  | 168,133 |  |  | 20,093 |  |  | 148,040 |
Warrants exercised and common stock reissued | — |  |  | — |  |  | — |  |  | — |  |  | (3) |  |  | 3 |
Common stock reissued for earnout payment | — |  |  | — |  |  | — |  |  | — |  |  | (125) |  |  | 125 |
Restricted share unit activity | — |  |  | — |  |  | — |  |  | 355 |  |  | — |  |  | 355 |
Stock options exercised | — |  |  | — |  |  | — |  |  | 896 |  |  | — |  |  | 896 |
Repurchase of common stock | — |  |  | — |  |  | — |  |  | — |  |  | 4,409 |  |  | (4,409) |
Balance at December 31, 2021 | 8,000 |  |  | 14,000 |  |  | 22,000 |  |  | 169,384 |  |  | 24,374 |  |  | 145,010 |
Schedule of Preferred Stock | The following table presents a summary of Preferred Stock as of December 31, 2021, 2020, and 2019.
| Issuance Date |  | Public Offering Amount |  | Net Proceeds |  | Earliest Redemption Date |  | Dividend Rate(1) |  | Liquidation Preference
Series D | June 21, 2018 |  | $200.0 | million |  | $195.1 | million |  | June 21, 2023 |  | 6.300 | % | (2) | $25 per share
Series E | July 1, 2019 |  | $350.0 | million |  | $342.0 | million |  | July 1, 2024 |  | 5.875 | % | (3) | $25 per share
(1) Dividends on all series of Preferred Stock are non-cumulative and, if declared, will accrue and be payable in arrears, quarterly. (2) Dividends, if declared, will be paid quarterly at a rate per annum equal to 6.300% for each dividend period from the original issue date to, but excluding, June 21, 2023. From and including June 21, 2023, the dividend rate will change to a floating rate equal to the three-month LIBOR plus a spread of 3.352% per annum. (3) Dividends, if declared, will be paid quarterly at a rate per annum equal to 5.875% for each dividend period from the original issue date to, but excluding, July 1, 2024. From and including July 1, 2024, the dividend rate will change and reset every five years on July 1 at a rate equal to the five-year U.S. Treasury Rate plus 4.127% per annum.
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) | The following table illustrates activity within the balances in AOCI by component, and is shown for the years ended December 31, 2021, 2020, and 2019.
Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes)
(in thousands) | Net Unrealized Gains (Losses) on Investment Securities Available for Sale(1) |  | Net Unrealized Gains (Losses) on Cash Flow Hedges(1) |  | Post-Retirement Unfunded Health Benefit |  | Total
Balance at December 31, 2018 | $ | (83,179) |  |  | $ | (12,137) |  |  | $ | 896 |  |  | $ | (94,420) |
Other comprehensive income (loss) before reclassifications | 161,170 |  |  | (6,350) |  |  | (378) |  |  | 154,442 |
Amounts reclassified from accumulated other comprehensive income (loss) | 5,675 |  |  | — |  |  | (56) |  |  | 5,619 |
Net current period other comprehensive income (loss) | 166,845 |  |  | (6,350) |  |  | (434) |  |  | 160,061 |
Balance at December 31, 2019 | $ | 83,666 |  |  | $ | (18,487) |  |  | $ | 462 |  |  | $ | 65,641 |
Other comprehensive income (loss) before reclassifications | 80,491 |  |  | 73,502 |  |  | — |  |  | 153,993 |
Amounts reclassified from accumulated other comprehensive income (loss) | (58,488) |  |  | (2,049) |  |  | (462) |  |  | (60,999) |
Net current period other comprehensive income (loss) | 22,003 |  |  | 71,453 |  |  | (462) |  |  | 92,994 |
Balance at December 31, 2020 | $ | 105,669 |  |  | $ | 52,966 |  |  | $ | — |  |  | $ | 158,635 |
Other comprehensive income (loss) before reclassifications | (174,246) |  |  | (57,705) |  |  | — |  |  | (231,951) |
Amounts reclassified from accumulated other comprehensive income (loss) | 597 |  |  | (9,602) |  |  | — |  |  | (9,005) |
Net current period other comprehensive income (loss) | (173,649) |  |  | (67,307) |  |  | — |  |  | (240,956) |
Balance at December 31, 2021 | $ | (67,980) |  |  | $ | (14,341) |  |  | $ | — |  |  | $ | (82,321) |
(1) For all periods presented, the ending balance in net unrealized gains (losses) on investment securities available for sale and cash flow hedges includes unrealized losses of $13.3 million and $12.1 million, respectively, related to residual tax effects remaining in OCI due to previously established deferred tax asset valuation allowances in 2010 and 2011. In accordance with ASC 740-20-45-11(b), under the portfolio approach, these unrealized losses are realized at the time the entire portfolio is sold or disposed.

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e526-108580 + Details
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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 + Details
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