Business Combinations - Summary of Actual Revenue and Net Loss Included in Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended								4 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Revenue	$ 162,986	$ 168,890	$ 162,701	$ 142,204	$ 139,013	$ 158,078	$ 160,138	$ 142,835		$ 636,781	$ 600,064	$ 630,007
Net loss	$ 7,572	$ 12,415	$ 10,228	$ 5,014	$ 5,718	$ 7,067	$ 2,544	$ 3,317		$ 35,229	$ 18,646	$ 44,620
CommScope, Inc. Subsidiaries Fiber Access Products, Technologies and Service Relationships [Member]
Business Acquisition [Line Items]
Revenue									$ 2,768
Net loss									$ (805)