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Consolidated Statements Of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated other Comprehensive Income (Loss) | Non Controlling Interest
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2016 | $ 867,040 | $ 631 | $ 650,162 | $ 300,084 | $ (83,837) |
Beginning Balance (in shares) at Dec. 31, 2016 |  | 63,109 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Employee stock compensation | 50,054 | $ 1 | 50,053 |  |  |
Deferred compensation | (2,989) |  | (1,536) | 4,525 |  |
Employee stock compensation (in shares) |  | 60 |  |  |  |
Proceeds from stock issuances under employee plans | 42,738 | $ 9 | 42,729 |  |  |
Proceeds from stock issuances under employee plans (in shares) |  | 934 |  |  |  |
Cash dividends declared ($2.32 per share, $2.20 per share and $2.12 per share in 2017, 2016, and 2015 respectively) | (145,423) |  |  | 145,423 |  |
Repurchase and retirement of common shares | $ (90,461) | $ 10 | 10,586 | 79,865 |  |
Repurchase and retirement of common shares (in shares) | (1,028) | 1,028 |  |  |  |
Net income | $ 172,492 |  |  | 172,492 |  |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | 172,492 |  |  |  |  |
Other comprehensive income | 38,208 |  |  |  | 38,208 |
Ending Balance at Dec. 31, 2017 | 931,659 | $ 631 | 733,894 | 242,763 | (45,629) |
Ending Balance (in shares) at Dec. 31, 2017 |  | 63,075 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Employee stock compensation | 63,966 | $ 2 | 63,964 |  |  |
Deferred compensation | 4,880 |  | (111) | (4,769) |  |
Employee stock compensation (in shares) |  | 245 |  |  |  |
Proceeds from stock issuances under employee plans | 47,092 | $ 8 | 47,084 |  |  |
Proceeds from stock issuances under employee plans (in shares) |  | 754 |  |  |  |
Cash dividends declared ($2.32 per share, $2.20 per share and $2.12 per share in 2017, 2016, and 2015 respectively) | (149,032) |  |  | 149,032 |  |
Repurchase and retirement of common shares | $ (348,663) | $ 32 | 37,066 | 311,565 |  |
Repurchase and retirement of common shares (in shares) | (3,184) | 3,184 |  |  |  |
Cumulative effect of adoption of accounting standards (ASU 2018-02) | $ 1,079 |  | 1 | 1,078 |  |
Net income | 335,257 |  |  | 335,257 |  |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | 335,257 |  |  |  |  |
Other comprehensive income | (17,344) |  |  |  | (17,344) |
Ending Balance at Dec. 31, 2018 | 866,736 |  |  |  |  |
Ending Balance (in shares) at Dec. 31, 2018 |  | 60,890 |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 867,015 | $ 609 | 807,986 | 121,114 | (62,973) | $ 279
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Employee stock compensation | 74,962 | $ 4 | 74,958 |  |  |
Deferred compensation | (6,761) |  | 4,488 | 2,273 |  |
Employee stock compensation (in shares) |  | 412 |  |  |  |
Proceeds from stock issuances under employee plans | 15,660 | $ 2 | 15,658 |  |  |
Proceeds from stock issuances under employee plans (in shares) |  | 205 |  |  |  |
Cash dividends declared ($2.32 per share, $2.20 per share and $2.12 per share in 2017, 2016, and 2015 respectively) | (149,101) |  |  | 149,101 |  |
Repurchase and retirement of common shares | $ (8,378) | $ 1 | 1,265 | 7,112 |  |
Repurchase and retirement of common shares (in shares) | (95) | 95 |  |  |  |
Cumulative effect of adoption of accounting standards (ASU 2018-02) | $ 0 |  |  | 668 | (668) |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | 279 |  |  |  |  |
Net income | 323,960 |  |  |  |  |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | 323,884 |  |  | 323,960 |  | (76)
Other comprehensive income | (9,079) |  |  |  | (9,079) |
Ending Balance at Dec. 31, 2019 | 1,107,999 |  |  |  |  |
Ending Balance (in shares) at Dec. 31, 2019 |  | 61,412 |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ 1,108,202 | $ 614 | $ 892,849 | $ 287,256 | $ (72,720) | $ 203

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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy. + References No definition available. + Details
Name: | us-gaap_StockholdersEquityOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of decrease to net income for accretion of temporary equity to its redemption value to derive net income apportioned to common stockholders. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration