Restructuring and Related Charges - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended		12 Months Ended	1 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014 Harmonic 2013 Restructuring [Member]	Jun. 27, 2014 Harmonic 2013 Restructuring [Member] Employees	Jun. 28, 2013 Harmonic 2013 Restructuring [Member]	Dec. 31, 2013 Harmonic 2013 Restructuring [Member]	Mar. 31, 2013 HFC business [Member]	Dec. 31, 2013 HFC business [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 284,000	$ 242,000	$ 433,000	$ 666,000		$ 519,000	$ 872,000	$ 2,200,000	$ 600,000
Restructuring Costs					284,000	512,000
Restructuring Reserve					$ 67,000	$ 67,000		$ 179,000		$ 13,000
Number of positions eliminated						20