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Subsequent Events (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
$ / shares
Details  
Dividend declaration date Feb. 20, 2017
Dividends per share | $ / shares $ 0.55
Dividends payable amount, total | $ $ 531,372
Dividends Payable, Date to be Paid Mar. 20, 2017
Dividends Payable, Date of Record Mar. 03, 2017