Summary of Fair Value of Consideration Transferred (Parenthetical) (Detail) $ in Thousands	Dec. 01, 2017 USD ($)
Ruckus Wireless and ICX Switch business (Ruckus Networks)
Business Acquisition [Line Items]
Business acquisition non-cash consideration	$ 2,359	[1]

[1] Non-cash consideration represents a $2.4 million settlement of preexisting payables and receivables between Ruckus Networks and ARRIS.