Concentration of credit risk (Tables)

3 Months Ended

Mar. 31, 2017

Accounts Receivable

Concentration of credit risk

Schedule of concentrations of 10% and greater

	As of		As of
	March 31,		December 31,
	2017		2016
Customer A	23	%	22	%
Customer B	17		17
Customer C	11		*

* Less than 10% accounts receivable concentration.

Revenue

Concentration of credit risk

Schedule of concentrations of 10% and greater

	Three Months Ended
	March 31,
	2017		2016
Customer A	19	%	17	%
Customer C	*		12
Customer G	11		11

* Less than 10% revenue concentration.