Concentration (Tables)

3 Months Ended

Mar. 31, 2016

Concentration [Abstract]

Concentration of revenue from customers

	Three Months Ended March 31,
Customer	2016			2015
A		18	%		*
B		16	%		*
C		*			12	%
D		12	%		*
E		11	%		*

* Less than 10%.

Concentration of purchase from suppliers

	Three Months Ended March 31,
Supplier	2016			2015
A		24	%		22	%
B		*			21	%
C		16	%		*

* Less than 10%.