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16. Subsequent Events (Details) - $ / shares
3 Months Ended 6 Months Ended
Aug. 31, 2016
Jul. 31, 2016
Aug. 02, 2015
Jul. 31, 2016
Aug. 02, 2015
16. Subsequent Events (Details) [Line Items]          
Common Stock, Dividends, Per Share, Declared   $ 0.10 $ 0.10 $ 0.20 $ 0.20
Subsequent Event [Member]          
16. Subsequent Events (Details) [Line Items]          
Dividends Payable, Date Declared Aug. 31, 2016        
Dividends Payable, Date to be Paid Sep. 30, 2016        
Dividends Payable, Date of Record Sep. 16, 2016        
Common Stock, Dividends, Per Share, Declared $ 0.10