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Equity and Accumulated Other Comprehensive Loss (Common Share Repurchase) (Details) - USD ($) $ in Thousands |  |  |  |  | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 06, 2020 | Feb. 25, 2020 | Feb. 24, 2020 | May 07, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Mar. 03, 2020 | Oct. 26, 2018
Stock Repurchase Program, Authorized Amount |  |  | $ 50,000 |  |  |  |  | $ 50,000
Payments for repurchase of common stock |  |  |  |  | $ 4,995 | $ 50,000 |  |
Weighted average price of common shares |  | 364,604 |  |  |  |  |  |
Period over which shares will be repurchased |  |  | 18 months |  |  |  |  |
Accelerated Share Repurchase Agreement [Member] |  |  |  |  |  |  |  |
Payments for repurchase of common stock |  |  |  | $ 50,000 |  |  |  |
Stock repurchased and retired during period, shares |  |  |  | 1,349,528 |  |  |  |
Percentage of expected shares repurchased |  |  |  | 80.00% |  |  |  |
Treasury stock, retired, cost method, amount |  |  |  | $ 40,000 |  |  |  |
Equity increase (decrease) related to shares repurchase program. |  |  |  | $ 10,000 |  |  |  |
Agreement Letter 10b18 [Member] |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  | $ 5,000 |
Treasury stock, retired, cost method, amount | $ 4,995 |  |  |  |  |  |  |
Total company common shares | 242,634 |  |  |  |  |  |  |
Treasury shares |  |  |  |  |  |  |  |
Treasury stock, retired, cost method, amount |  | $ (10,000) |  |  |  |  |  |
Additional Paid-In Capital |  |  |  |  |  |  |  |
Treasury stock, retired, cost method, amount |  | $ 10,000 |  |  |  |  |  |
Additional Paid-In Capital | Agreement Letter 10b18 [Member] |  |  |  |  |  |  |  |
Treasury stock, retired, cost method, amount | $ 4,995 |  |  |  |  |  |  |

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