Concentration of Credit Risk (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Customer concentration risk | Revenue
Concentration of Credit Risk
Number of customers	2	3	2	3
Customer concentration risk | Revenue | Customer one
Concentration of Credit Risk
Concentration risk percentage	39.20%	47.00%	47.20%	50.70%
Customer concentration risk | Revenue | Customer two
Concentration of Credit Risk
Concentration risk percentage	29.80%	15.70%	20.40%	12.90%
Customer concentration risk | Revenue | Customer three
Concentration of Credit Risk
Concentration risk percentage		12.40%		12.80%
Customer concentration risk | Accounts receivable
Concentration of Credit Risk
Number of customers			3		3
Customer concentration risk | Accounts receivable | Customer one
Concentration of Credit Risk
Concentration risk percentage			42.20%		55.90%
Customer concentration risk | Accounts receivable | Customer two
Concentration of Credit Risk
Concentration risk percentage			11.60%		17.60%
Customer concentration risk | Accounts receivable | Customer three
Concentration of Credit Risk
Concentration risk percentage			11.10%		12.00%
Vendor concentration risk | Accounts payable
Concentration of Credit Risk
Number of vendors			3		2
Vendor concentration risk | Accounts payable | Vendor one
Concentration of Credit Risk
Concentration risk percentage			19.40%		15.90%
Vendor concentration risk | Accounts payable | Vendor two
Concentration of Credit Risk
Concentration risk percentage			17.50%
Vendor concentration risk | Accounts payable | Vendor three
Concentration of Credit Risk
Concentration risk percentage			13.00%
Vendor concentration risk | Accounts payable | Vendor Four
Concentration of Credit Risk
Concentration risk percentage					14.10%