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Stockholders' Equity (Dividends) (Details) - USD ($)
$ / shares in Units, $ in Thousands
Jul. 16, 2020
Apr. 15, 2020
Jan. 23, 2020
Oct. 17, 2019
Jul. 18, 2019
Apr. 18, 2019
Jan. 24, 2019
Oct. 18, 2018
Share-based Payment Arrangement [Abstract]                
Dividend per Share $ 0.08 $ 0.08 $ 0.08 $ 0.08 $ 0.08 $ 0.08 $ 0.08 $ 0.08
Total of Cash Dividends Declared $ 12,433 $ 12,452 $ 12,517 $ 12,647 $ 12,724 $ 12,681 $ 12,706 $ 13,226