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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | AOCI Attributable to Parent | Preferred Stock [Member] | Accounting Standards Update 2016-13 | Accounting Standards Update 2016-13 Retained Earnings
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2017 |  | 77,740,000 |  |  |  |  |  |
Balance at Dec. 31, 2017 | $ 3,707,952 | $ 77,740 | $ 3,115,304 | $ 519,144 | $ (4,236) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Exercise of employee common stock options, stock appreciation rights, and related tax benefits (in shares) | 97,877 | 98,000 |  |  |  |  |  |
Exercise of employee common stock options, stock appreciation rights, and related tax benefits | $ 1,851 | $ 98 | 1,753 |  |  |  |  |
Repurchase of common stock (in shares) |  | (405,000) |  |  |  |  |  |
Repurchase of common stock | (20,694) | $ (405) | (20,289) |  |  |  |  |
Payments of Ordinary Dividends | (45,454) |  |  | 45,454 |  |  |  |
Issuance of restricted common shares, net of forfeitures (in shares) |  | 157,000 |  |  |  |  |  |
Issuance of restricted common shares, net of forfeitures | 0 | $ 157 | (157) |  |  |  |  |
Restricted shares withheld for taxes (in shares) |  | (106,000) |  |  |  |  |  |
Restricted shares withheld for taxes | (6,922) | $ (106) | (6,816) |  |  |  |  |
Stock-based compensation expense | 17,636 |  | 17,636 |  |  |  |  |
Net income | 359,440 |  |  | 359,440 |  |  |  |
Other Comprehensive Income (Loss) | (47,869) |  |  |  | (47,869) |  |  |
Balance (in shares) at Dec. 31, 2018 |  | 77,484,000 |  |  |  |  |  |
Balance at Dec. 31, 2018 | $ 3,965,940 | $ 77,484 | 3,107,431 | 833,130 | (52,105) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Exercise of employee common stock options, stock appreciation rights, and related tax benefits (in shares) | 59,317 | 59,000 |  |  |  |  |  |
Exercise of employee common stock options, stock appreciation rights, and related tax benefits | $ 1,269 | $ 59 | 1,210 |  |  |  |  |
Repurchase of common stock (in shares) |  | (1,102,000) |  |  |  |  |  |
Repurchase of common stock | (61,416) | $ (1,102) | (60,314) |  |  |  |  |
Payments of Ordinary Dividends | (49,828) |  |  | 49,828 |  |  |  |
Issuance of restricted common shares, net of forfeitures (in shares) |  | 211,000 |  |  |  |  |  |
Issuance of restricted common shares, net of forfeitures | 0 | $ 211 | (211) |  |  |  |  |
Restricted shares withheld for taxes (in shares) |  | (88,000) |  |  |  |  |  |
Restricted shares withheld for taxes | (4,963) | $ (88) | (4,875) |  |  |  |  |
Stock-based compensation expense | 21,226 |  | 21,226 |  |  |  |  |
Net income | 400,881 |  |  | 400,881 |  |  |  |
Other Comprehensive Income (Loss) | 82,639 |  |  |  | 82,639 |  |  |
Balance (in shares) at Dec. 31, 2019 |  | 76,564,000 |  |  |  |  |  |
Balance at Dec. 31, 2019 | 4,355,748 | $ 76,564 | 3,064,467 | 1,184,183 | 30,534 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Issuance of preferred stock, net of issuance costs | $ 217,126 |  |  |  |  | $ 217,126 |  |
Exercise of employee common stock options, stock appreciation rights, and related tax benefits (in shares) | 17,505 | 18,000 |  |  |  |  |  |
Exercise of employee common stock options, stock appreciation rights, and related tax benefits | $ 410 | $ 18 | 392 |  |  |  |  |
Repurchase of common stock (in shares) |  | (1,015,000) |  |  |  |  |  |
Repurchase of common stock | (50,790) | $ (1,015) | (49,775) |  |  |  |  |
Payments of Dividends | 7,596 |  |  | 7,596 |  |  |  |
Payments of Ordinary Dividends | (49,389) |  |  | 49,389 |  |  |  |
Issuance of restricted common shares, net of forfeitures (in shares) |  | 255,000 |  |  |  |  |  |
Issuance of restricted common shares, net of forfeitures | 0 | $ 255 | (255) |  |  |  |  |
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes (in shares) |  | 86,000 |  |  |  |  |  |
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes | 2,488 | $ 86 | (2,574) |  |  |  |  |
Restricted shares withheld for taxes (in shares) |  | (58,000) |  |  |  |  |  |
Restricted shares withheld for taxes | (2,987) | $ (58) | (2,929) |  |  |  |  |
Stock-based compensation expense | 18,737 |  | 18,737 |  |  |  |  |
Net income | 312,321 |  |  | 312,321 |  |  |  |
Cumulative effect of change in accounting principle |  |  |  |  |  |  | $ (31,796) | $ (31,796)
Other Comprehensive Income (Loss) | 145,315 |  |  |  | 145,315 |  |  |
Balance (in shares) at Dec. 31, 2020 |  | 75,850,000 |  |  |  |  |  |
Balance at Dec. 31, 2020 | $ 4,904,611 | $ 75,850 | $ 3,028,063 | $ 1,407,723 | $ 175,849 | $ 217,126 |  |

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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: 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=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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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
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