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v3.8.0.1

Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock | Common Stock and Additional Paid-In Capital | Retained Earnings | Treasury Stock | AOCI, Net of Tax
--- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2016 |  |  | 144,167,451 |  |  |  |
Beginning balance at Dec. 31, 2016 |  | $ 3,427,741 |  | $ 1,727,598 | $ 2,187,676 | $ (439,387) | $ (48,146)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  | 169,736 |  |  | 169,736 |  |
Other comprehensive income (loss) |  | 4,628 |  |  |  |  | 4,628
Stock compensation costs |  | 5,151 |  | 5,151 |  |  |
Net activity of common stock pursuant to various stock compensation plans and agreements (in shares) |  |  | 294,115 |  |  |  |
Net activity of common stock pursuant to various stock compensation plans and agreements |  | (12,154) |  | 0 |  |  |
Net activity of common stock pursuant to various stock compensation plans and agreements |  |  |  |  |  | (12,154) |
Cash dividends on common stock |  | (29,148) |  |  | (29,148) |  |
Ending balance (in shares) at Mar. 31, 2017 |  |  | 144,461,566 |  |  |  |
Ending balance at Mar. 31, 2017 |  | 3,565,954 |  | 1,732,749 | 2,328,264 | (451,541) | (43,518)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Cumulative effect of change in accounting principle related to marketable equity securities | [1] | (160) |  |  | (545) |  | 385
Beginning balance (in shares) at Dec. 31, 2017 |  |  | 144,543,060 |  |  |  |
Beginning balance at Dec. 31, 2017 |  | 3,841,951 |  | 1,755,495 | 2,576,302 | (452,327) | (37,519)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Reclassification of tax effects in AOCI resulting from the new federal corporate income tax rate | [2] |  |  |  | 6,656 |  | (6,656)
Net income |  | 187,032 |  |  | 187,032 |  |
Other comprehensive income (loss) |  | (12,014) |  |  |  |  | (12,014)
Stock compensation costs |  | 6,158 |  | 6,158 |  |  |
Net activity of common stock pursuant to various stock compensation plans and agreements (in shares) |  |  | 329,465 |  |  |  |
Net activity of common stock pursuant to various stock compensation plans and agreements |  | (14,946) |  | (14,946) |  |  |
Net activity of common stock pursuant to various stock compensation plans and agreements |  |  |  |  |  | 0 |
Cash dividends on common stock |  | (29,266) |  |  | (29,266) |  |
Ending balance (in shares) at Mar. 31, 2018 |  |  | 144,872,525 |  |  |  |
Ending balance at Mar. 31, 2018 |  | $ 3,978,755 |  | $ 1,746,707 | $ 2,740,179 | $ (452,327) | $ (55,804)
[1] | Represents the impact of the adoption in the first quarter of 2018 of Accounting Standards Update (“ASU”) 2016-01, Financial Instruments — Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. Refer to Note 2 — Current Accounting Developments to the Consolidated Financial Statements for additional information.
[2] | Represents amounts reclassified from AOCI to retained earnings due to the early adoption of ASU 2018-02, Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income during the first quarter of 2018. Refer to Note 2 — Current Accounting Developments to the Consolidated Financial Statements for additional information.

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