Restructuring and Excess Facilities (Tables)

12 Months Ended

Dec. 31, 2015

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring and Asset Impairment Charges

The following table summarizes the restructuring and asset impairment charges (in thousands):

	Year ended December 31,
	2015		2014		2013
Product cost of revenue	$	113	$	315	$	823
Operating expenses-Restructuring and asset impairment charges	1,372		2,761		1,421
Total	$	1,485	$	3,076	$	2,244

Harmonic 2015 Restructuring [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes the activities in the Harmonic 2015 restructuring accrual during the years ended December 31, 2015 and 2014 (in thousands):

	Termination of an information technology ("IT") project			Severance and benefits			Termination of a research and development project			Other charges			Total
Charges for 2015 Restructuring Plan	$	1,138		$	599		$	307		$	125		$	2,169
Cash payments	—			(294		)	(307		)	—			(601		)
Non-cash write-offs	(1,138		)	—			—			(108		)	(1,246		)
Balance at December 31, 2014	—			305			—			17			322
Charges for 2015 Restructuring Plan	—			1,413			—			204			1,617
Adjustments to restructuring provisions	—			(126		)	—			(6		)	(132		)
Cash payments	—			(1,328		)	—			(13		)	(1,341		)
Non-cash write-offs	—			—			—			(202		)	(202		)
Balance at December 31, 2015	$	—		$	264		$	—		$	—		$	264

Harmonic 2013 Restructuring [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes the activities in the Harmonic 2013 restructuring accrual during the years ended December 31, 2014 and 2013 (in thousands):

	Severance			Impairment of Leasehold Improvement			Obsolete Inventories			Termination of a Research and Development Project			Excess Facilities			Total
Charges for 2013 Restructuring Plan	$	1,663		$	101		$	404		$	—		$	—		$	2,168
Adjustments to restructuring provisions	29			48			—			—			—			77
Cash payments	(1,513		)	—			—			—			—			(1,513		)
Non-cash write-offs	—			(149		)	(404		)	—			—			(553		)
Balance at December 31, 2013	179			—			—			—			—			179
Charges for 2013 Restructuring Plan	829			—			—			63			32			924
Adjustments to restructuring provisions	(17		)	—			—			—			—			(17		)
Cash payments	(991		)	—			—			(63		)	(32		)	(1,086		)
Balance at December 31, 2014	$	—		$	—		$	—		$	—		$	—		$	—

HFC Restructuring [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes the activities in the HFC restructuring accrual during the years ended December 31, 2014 and 2013 (in thousands):

	Severance			Contract Termination			Total
Charges for HFC Restructuring Plan recorded in discontinued operations	$	403		$	124		$	527
Adjustments to restructuring provisions	102			(29		)	73
Cash payments	(492		)	(95		)	(587		)
Balance at December 31, 2013	13			—			13
Cash payments	(13		)	—			(13		)
Balance at December 31, 2014	$	—		$	—		$	—