Segment Information Revenue by Major Customer (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Sales Revenue, Net | Verizon Wireless
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	35.90%
Sales Revenue, Net | Philips Healthcare
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	15.70%	10.00%	14.90%
Sales Revenue, Net | Nokia Solutions and Networks
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		16.00%	17.00%
Accounts Receivable | Verizon Wireless
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	10.40%	36.00%
Accounts Receivable | Philips Healthcare
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	15.40%
Accounts Receivable | Reliance Jio Infocomm
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	32.60%	14.70%