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Shareholders' Equity Textuals (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |
Cross Currency Swap interest portion recognized in income | $ 3,600 | $ 800 | $ (200)
Common Stock, Shares Authorized | 125,000,000 | 125,000,000 |
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01 |
Common Stock, Voting Rights | one |  |
Common Stock Reserved for Issuance to the Stock Option Plans | 2,954,812 |  |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |
Preferred Stock, Shares Authorized | 10,000,000 | 10,000,000 |
Preferred Stock, Par Value | $ 0.01 | $ 0.01 |
Stock Repurchase Program, Additional Authorized Amount |  | $ 2,000,000 |
Share Repurchase Program and Treasury Stock [Abstract] |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 1,300,000 |  |
Shares Repurchased Under Share Repurchase Program | 28,600,000 |  |
Share Repurchase Program, Total Cost Program to Date | $ 5,200,000 |  |
Repurchases of Common Stock, Value | $ (774,999) | $ (474,999) | (399,997)
Repurchases of Common Stock, Shares | (1,094,648) | (802,809) |
Treasury Stock Acquired, Average Cost Per Share | $ 707.97 | $ 591.65 |
Exercise of stock options and restricted stock units, shares | 298,002 | 183,379 |
Cross Currency Swap Revaluation Portion Recognized in Earnings | $ 4,600 | $ 3,000 | $ 1,200

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- Definition Number of treasury shares reissued during the period as a result of the exercise of stock options and vesting of restricted stock units. + References No definition available. + Details
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- Definition Total cost spent on the share repurchase program to date by the Company. + References No definition available. + Details
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