Concentration (Tables)

6 Months Ended

Jun. 30, 2016

Concentration [Abstract]

Concentration of revenue from customers

	Three Months Ended June 30,						Six Months Ended June 30,
Customer	2016			2015			2016			2015
A		16	%		*			*			*
B		14	%		*			*			*
C		11	%		*			*			*
D		10	%		*			*			*
E		*			*			11	%		*
F		*			*			10	%		*
G		*			21	%		*			10	%

* Less than 10%.

Concentration of purchase from suppliers

	Three Months Ended June 30,						Six Months Ended June 30,
Supplier	2016			2015			2016			2015
A		12	%		27	%		18	%		24	%
B		11	%		*			13	%		*
C		*			*			*			12	%

* Less than 10%.