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15. Subsequent Events (Details) - Subsequent Event [Member]
Dec. 06, 2018
$ / shares
15. Subsequent Events (Details) [Line Items]  
Dividends Payable, Date Declared Dec. 06, 2018
Common Stock, Dividends, Per Share, Declared $ 0.15
Dividend, Increasem Precentage 7.10%
Dividend, Increase, Per-Share $ 0.01
Dividends Payable, Date to be Paid Dec. 31, 2018
Dividends Payable, Date of Record Dec. 17, 2018