Long-term Debt and Capital Lease Obligations Cosine Long-Term Debt Facilities (Details) - Jun. 30, 2015 - CoSine Communications, Inc. and API Group plc $ in Thousands	USD ($)	GBP (£)
Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate (as a percent)	4.30%	4.30%
Revolving Credit Facility | HSBC Bank plc
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 21,246	£ 13,500,000
Remaining borrowing capacity	$ 21,246
Interest rate (as a percent)	2.60%	2.60%
Revolving Credit Facility | HSBC
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 8,500
Remaining borrowing capacity	$ 3,961
Interest rate (as a percent)	3.20%	3.20%
Revolving Credit Facility | Wells Fargo Bank
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,407
Temporary Overdraft Facility | HSBC Bank plc
Debt Instrument [Line Items]
Maximum borrowing capacity | £		£ 1,500,000