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Stockholders' Equity (Dividends) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Aug. 05, 2016
Feb. 09, 2016
Jan. 31, 2016
Jul. 31, 2016
Jul. 31, 2015
Dividends [Line Items]          
Dividends on common stock   $ 1,500   $ 1,452 $ 1,448
Cash dividend, per share   $ 0.03      
Dividends payable, date of record     Jan. 22, 2016 Jul. 22, 2016  
Subsequent Event [Member]          
Dividends [Line Items]          
Dividends on common stock $ 1,500        
Cash dividend, per share $ 0.03