Geographic Information - Narrative (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2015 segment	Dec. 31, 2015 segment customer	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Number of business segments | segment	2	1
United States
Segment Reporting Information [Line Items]
Concentration risk percentage		67.00%	72.00%	68.00%
Customer A | Sales Revenue
Segment Reporting Information [Line Items]
Concentration risk percentage		19.00%	11.00%	5.00%
Number of customers | customer		1
Customer A | Accounts Receivable
Segment Reporting Information [Line Items]
Concentration risk percentage		15.00%	22.00%
Customer B | Sales Revenue
Segment Reporting Information [Line Items]
Concentration risk percentage		12.00%	12.00%	15.00%
Customer B | Accounts Receivable
Segment Reporting Information [Line Items]
Concentration risk percentage		5.00%	1.00%