Business Combinations - Allocation of the Purchase Price to the Estimated Fair Value of the Assets Acquired and Liabilities Assumed Subject to Working Capital Adjustments (Detail) - USD ($) $ in Thousands		12 Months Ended
	Sep. 13, 2016	Dec. 31, 2016
Liabilities
Gain on bargain purchase of a business, net of tax		$ (3,542)
Total purchase price		$ 943
CommScope, Inc. Subsidiaries Fiber Access Products, Technologies and Service Relationships [Member]
Assets
Inventory	$ 3,131
Property, plant and equipment	352
Intangible assets	4,700
Total assets acquired	8,183
Liabilities
Accounts payable	(1,250)
Warranty payable	(61)
Accrued wages and benefits	(122)
Deferred income taxes	(2,265)
Total liabilities assumed	(3,698)
Total net assets	4,485
Gain on bargain purchase of a business, net of tax	(3,542)
Total purchase price	$ 943