Commitments and Contingencies - Gain and Loss Contingencies (Details) - Patent Lawsuit Against UEBV and Telenet - Pending litigation		1 Months Ended
	Jun. 10, 2015 product subsidiary patent customer	Sep. 30, 2015 patent
Contingencies [Line Items]
Number of subsidiaries named in lawsuit | subsidiary	1
Number of customers named in lawsuit | customer	1
Design patents
Contingencies [Line Items]
Number of products named in lawsuit | product	1
Number of patents allegedly infringed upon	2
Utility patent
Contingencies [Line Items]
Number of patents allegedly infringed upon	1	1