Restructuring and Related Charges - 2017 Activities in Restructuring Accrual (Details) - Harmonic 2017 Restructuring Plan [Member] $ in Thousands	3 Months Ended
	Sep. 29, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,435
Payments for Restructuring	(1,638)
Restructuring Reserve, Settled without Cash	58
Ending Balance	855
Restructuring Reserve, Current	(684)	[1]
Restructuring Reserve, Noncurrent	171	[2]
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	318
Payments for Restructuring	(45)
Restructuring Reserve, Settled without Cash	58
Ending Balance	331
Restructuring Reserve, Current	(160)	[1]
Restructuring Reserve, Noncurrent	171	[2]
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,117
Payments for Restructuring	(1,593)
Restructuring Reserve, Settled without Cash	0
Ending Balance	524
Restructuring Reserve, Current	(524)	[1]
Restructuring Reserve, Noncurrent	$ 0	[2]

[1] The Company anticipates that the remaining severance and benefits accrual at September 29, 2017 will be fully paid within the next twelve months.

[2] The current portion and long-term portion of the restructuring liability are reported under “Accrued and other current liabilities” and “Other non-current liabilities”, respectively, on the Company’s Condensed Consolidated Balance Sheets.