Concentration (Details) - Revenue [Member]	3 Months Ended				6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2016		Jun. 30, 2015
Concentration of revenue from customers
Concentration risk percentage	10.00%		10.00%		10.00%		10.00%
Customer A [Member]
Concentration of revenue from customers
Concentration risk percentage	16.00%			[1]		[1]		[1]
Customer B [Member]
Concentration of revenue from customers
Concentration risk percentage	14.00%			[1]		[1]		[1]
Customer C [Member]
Concentration of revenue from customers
Concentration risk percentage	11.00%			[1]		[1]		[1]
Customer D [Member]
Concentration of revenue from customers
Concentration risk percentage	10.00%			[1]		[1]		[1]
Customer E [Member]
Concentration of revenue from customers
Concentration risk percentage		[1]		[1]	11.00%			[1]
Customer F [Member]
Concentration of revenue from customers
Concentration risk percentage		[1]		[1]	10.00%			[1]
Customer G [Member]
Concentration of revenue from customers
Concentration risk percentage		[1]	21.00%			[1]	10.00%

[1] Less than 10%.