Major Customers (Details) - Customer Concentration Risk - customer	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues
Concentration Risk [Line Items]
Number of customers	2	1
Revenues | Customer No. 1
Concentration Risk [Line Items]
Concentration risk percentage	13.00%
Revenues | Customer No. 2
Concentration Risk [Line Items]
Concentration risk percentage	11.00%
Revenues | Customer No. 4
Concentration Risk [Line Items]
Concentration risk percentage		10.00%
Revenues | Customer No. 5
Concentration Risk [Line Items]
Concentration risk percentage		9.00%
Accounts Receivable
Concentration Risk [Line Items]
Number of customers	1
Accounts Receivable | Customer No. 1
Concentration Risk [Line Items]
Concentration risk percentage	26.00%
Accounts Receivable | Customer No. 2
Concentration Risk [Line Items]
Concentration risk percentage	7.00%
Accounts Receivable | Customer No. 3
Concentration Risk [Line Items]
Concentration risk percentage	10.00%