Segment Information (Details) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016 USD ($)	Oct. 02, 2015 USD ($)	Dec. 31, 2014 segment	Sep. 30, 2016 USD ($)	Oct. 02, 2015 USD ($)	Sep. 26, 2014 segment	Feb. 29, 2016
Segment Reporting Information [Line Items]
Provision for excess and obsolete inventories					$ 6,246	$ 1,234
Revenue, Net		$ 101,406	$ 83,305		292,809	290,424
Income (loss) from operations		(11,933)	(6,257)		(50,807)	(6,587)
Operating Expenses		(63,296)	(52,488)		(193,864)	(162,231)
Stock-based compensation		(2,680)	(3,827)		(8,542)	(11,845)
Amortization of intangibles		(4,389)	(1,532)		(12,711)	(4,971)
Nonoperating Income (Expense)		(4,321)	178		(10,546)	(2,702)
Loss before income taxes		(16,254)	(6,079)		(61,353)	(9,289)
Number of Reportable Segments | segment				2			1
Business Acquisition, Percentage of Voting Interests Acquired								100.00%
Video [Member]
Segment Reporting Information [Line Items]
Revenue, Net		91,353	71,889		246,949	219,378
Cable Edge [Member]
Segment Reporting Information [Line Items]
Revenue, Net		10,053	11,416		45,860	71,046
Operating Segments [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations		119	(388)		(9,061)	10,968
Operating Segments [Member] | Video [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations		4,886	3,575		(1,943)	8,386
Operating Segments [Member] | Cable Edge [Member]
Segment Reporting Information [Line Items]
Provision for excess and obsolete inventories					4,400
Income (loss) from operations		(4,767)	(3,963)		(7,118)	2,582
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating Expenses	[1]	$ (4,983)	$ (510)		$ (20,493)	$ (739)

[1] Unallocated corporate expenses include certain corporate-level operating expenses and charges such as restructuring and related charges and excess facilities charges. Additionally, the unallocated corporate expenses in 2016 include TVN acquisition- and integration-related costs (see Note 3, “Business Acquisition” for additional information) and an inventory obsolescence charge of approximately $4.4 million recorded in the nine months ended September 30, 2016 for some older Cable Edge product lines in accordance with the Company’s policy for excess and obsolete inventory and also as part of our strategic plan to re-position and dedicate the Company’s primary Cable Edge resources to its new CableOS™ products.