Segment Information Revenue by Major Customer (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Sales Revenue, Net [Member] | Nokia Siemens Networks [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	16.00%	17.00%	18.70%
Sales Revenue, Net [Member] | Philips Healthcare [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	10.00%	14.90%
Accounts Receivable [Member] | Nokia Siemens Networks [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		18.50%
Accounts Receivable [Member] | Tier-one U.S. Carrier (Verizon) [Domain]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	36.00%
Accounts Receivable [Member] | Reliance Jio [Domain]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	14.70%
Accounts Receivable [Member] | Philips Healthcare [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		13.90%