Summary of Significant Accounting Policies, Concentration of Credit Risk (Details) - Customer	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Revenue by major customers [Abstract]
Number of major customers that contribute to the revenue concentration	2	1
Customer Concentration Risk [Member]
Revenue by major customers [Abstract]
Percentage of revenue contributed by major customers	39.00%	10.20%
Credit Concentration Risk [Member]
Revenue by major customers [Abstract]
Percentage of revenue contributed by major customers	26.70%
Revenue [Member]
Revenue by major customers [Abstract]
Percentage of revenue contributed by major customers	10.00%
Accounts Receivable [Member]
Revenue by major customers [Abstract]
Percentage of revenue contributed by major customers	10.00%