Goodwill and Intangible Assets (Detail) - USD ($) $ in Thousands	2 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Goodwill
Elimination of Predecessor goodwill		$ (155,953)
Goodwill as a result of the Business Combination		41,555
Carrying amount of goodwill	$ 41,555	41,555
Other intangible assets:
Gross Carrying Amount	836,044	836,044
Accumulated Amortization	(6,815)	(6,815)
Total	791,729	791,729
Net	$ 829,229	829,229
Weighted average
Other intangible assets:
Useful life (in years)	19 years 8 months 23 days
Trade name
Other intangible assets:
Carrying Amount	$ 35,500	35,500
Service provider network
Other intangible assets:
Carrying Amount	2,000	2,000
Developed Technology
Other intangible assets:
Gross Carrying Amount	790,500	790,500
Accumulated Amortization	(6,760)	(6,760)
Total	$ 783,740	783,740
Developed Technology | Weighted average
Other intangible assets:
Useful life (in years)	19 years 8 months 5 days
Customer relationships
Other intangible assets:
Gross Carrying Amount	$ 8,000	8,000
Accumulated Amortization	(55)	(55)
Total	$ 7,945	7,945
Customer relationships | Weighted average
Other intangible assets:
Useful life (in years)	23 years 9 months 29 days
Software
Other intangible assets:
Gross Carrying Amount	$ 44	44
Total	$ 44	44
Software | Weighted average
Other intangible assets:
Useful life (in years)	4 years
Predecessor
Goodwill
Carrying amount of goodwill		$ 155,953
Other intangible assets:
Gross Carrying Amount			$ 265,622
Accumulated Amortization			(168,661)
Net			96,961
Predecessor | Intellectual property
Other intangible assets:
Gross Carrying Amount			150,000
Accumulated Amortization			(86,250)
Total			63,750
Predecessor | Trade name
Other intangible assets:
Gross Carrying Amount			6,000
Accumulated Amortization			(3,450)
Total			2,550
Predecessor | Customer relationships
Other intangible assets:
Gross Carrying Amount			108,834
Accumulated Amortization			(78,224)
Total			30,610
Predecessor | Software
Other intangible assets:
Gross Carrying Amount			788
Accumulated Amortization			(737)
Total			$ 51