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Consolidated Statements Of Changes In Shareholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Loss [Member] | Treasury Stock at Cost [Member] | Parent [Member] | Non-controlling Interests [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning of period at Dec. 31, 2017 |  |  |  | $ 150,000 | $ 10,746 | $ 1,733,348 | $ 1,033,526 | $ (26,736) | $ (39,308) |  |
Common stock issued under employee plans |  |  |  |  | 123 |  |  |  | 12,542 |  |
Common stock repurchased |  | $ (2,800) |  |  |  |  |  |  | (2,839) |  |
Unit amortization, net of forfeitures |  |  |  |  |  | 28,154 |  |  |  |  |
Net income |  | 88,761 |  |  |  |  | 88,761 |  |  |  |
Dividends declared, Common |  |  |  |  |  |  | (8,629) |  |  |  |
Dividends declared, Preferred |  |  |  |  |  |  | (2,344) |  |  |  |
Common stock issued under employee plans and related tax benefits |  |  |  |  |  | (43,391) | (7,964) |  |  |  |
Issuance of common stock for acquisitions |  |  |  |  |  | (56) |  |  |  |  |
Dividends declared to equity-award holders |  |  |  |  |  | 1,651 |  |  |  |  |
Unrealized gains/(losses) on securities, net of tax |  |  |  |  |  |  |  | (13,071) |  |  |
Unrealized gains/(losses) on cash flow hedging activities, net of tax |  |  |  |  |  |  |  | 2,706 |  |  |
Foreign currency translation adjustment, net of tax |  | 3,736 | [1],[2] |  |  |  |  | 3,736 |  |  |
Other |  |  |  | (32) |  | 4 | 787 |  |  |  |
Balance, end of period at Mar. 31, 2018 |  | 2,917,540 |  | 149,968 | 10,869 | 1,719,710 | 1,103,013 | (36,415) | (29,605) | $ 2,917,540 |
Cumulative adjustments for accounting changes | [3] |  |  |  |  |  | (1,124) | (3,050) |  |  |
Balance, beginning of period at Dec. 31, 2018 |  | 3,197,593 |  | 150,000 | 11,166 | 1,893,304 | 1,366,503 | (72,523) | (180,857) |  | $ 30,000
Common stock issued under employee plans |  |  |  |  |  |  |  |  | 66,302 |  |
Common stock repurchased |  | (53,900) |  |  |  |  |  |  | (53,869) |  |
Unit amortization, net of forfeitures |  |  |  |  |  | 33,317 |  |  |  |  |
Net income |  | 99,207 |  |  |  |  | 99,439 |  |  |  | 232
Dividends declared, Common |  |  |  |  |  |  | (12,944) |  |  |  |
Dividends declared, Preferred |  |  |  |  |  |  | (2,344) |  |  |  |
Common stock issued under employee plans and related tax benefits |  |  |  |  |  | (95,295) | 27 |  |  |  |
Issuance of preferred stock |  |  |  | 160,000 |  | (4,706) |  |  |  |  |
Unrealized gains/(losses) on securities, net of tax |  |  |  |  |  |  |  | 25,800 |  |  |
Unrealized gains/(losses) on cash flow hedging activities, net of tax |  |  |  |  |  |  |  | (1,826) |  |  |
Foreign currency translation adjustment, net of tax |  | 2,168 | [1],[2] |  |  |  |  | 2,168 |  |  |
Other |  |  |  |  |  | (16) | (264) |  |  |  |
Capital contributions from non-controlling interest holders |  |  |  |  |  |  |  |  |  |  | 26,800
Distributions to non-controlling interest holders |  |  |  |  |  |  |  |  |  |  | (458)
Balance, end of period at Mar. 31, 2019 |  | $ 3,433,197 |  | $ 310,000 | $ 11,166 | $ 1,826,604 | 1,443,658 | $ (46,381) | $ (168,424) | $ 3,376,623 | $ 56,574
Cumulative adjustments for accounting changes | [3] |  |  |  |  |  | $ (6,759) |  |  |  |
[1] | Net of tax expense of $10.1 million and tax benefit of $2.3 million for the three months ended March 31, 2019 and 2018, respectively.
[2] | The adoption of ASU 2018-02 on January 1, 2018 resulted in a reclassification of $3.1 million to retained earnings related to cash flow hedges and investment portfolio credit risk.
[3] | Cumulative adjustments for accounting changes relate to the adoption of certain accounting updates during 2019 and 2018. See Note 2 to the consolidated financial statements for further information. The 2018 adjustments are described further in Note 2 to the consolidated financial statements in our 2018 Form 10-K.

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